High performance tungsten-copper composite material

Tungsten copper alloy has good dense as the electrode material requirements, wear corrosion resistance and good electrical conductivity. This paper discusses the technology route for preparing high-performance tungsten powder of fine particles of tungsten copper electrode, including particle size studies, preparation of high-performance tungsten  tungsten carbide inserts  infiltration process, add four parts impact on performance and other metallic elements. Metallurgical analysis by means of modern microscopy,  molybdenum electrode  microscopy analysis carried out a lot of experimental work and theoretical analysis, prepared by a high performance copper tungsten composites. First, the effects of three different tungsten powder particle size of the powder tungsten-copper alloy. Experimental results show that the finer the particle size, the density, the higher the hardness, but poor conductivity, tissue unevenness also increases.

Erosion Research arcing tungsten sheet contact materials

Arc erosion refers to the electric arc , the contact material to escape electronic , metal ions, metal vapor , droplets of molten metal from the electrode surface into the gap, resulting in loss of material . Arc erosion process is very complex , in the electric arc , electrical contact surfaces for physical and chemical changes . Erosion Research arcing contact materials is an important aspect of electrical arcing and contact theory and applied research . Materials production processes,  tungsten carbide plate  will result in different forms and morphologies arc erosion , anti- erosion ability arc prepared by powder metallurgy tungsten copper contact materials has been studied. In this paper, scanning electron microscopy and spectroscopy analyzer to observe the surface morphology of the fiber  Moly Crucible  arc erosion of tungsten copper contact materials , and studied its arc erosion rate , tungsten, copper contact material prepared in conjunction with powder metallurgy arc erosion compared. Materials and Methods tungsten fibers have a directivity alternative refractory metal powder of tungsten powder , a two-dimensional weaving method with the weft wire , tungsten wire is warp knitted and the copper-tungsten mesh ( wire as small when copper -induced infiltration ) and copper billets , two stacked together , placed into a vacuum sintering furnace for infiltration , you can get the fiber structure of tungsten copper contact materials .

Lower gas and impurities made ​​of tungsten sheet

Physical properties and electrical properties of tungsten-copper contact materials are used in a large number of high-voltage switchgear, load switch , automatic breaking and other high-voltage switchgear , switches and security , reliability , largely depends on the contact material . Fiber reinforced metal matrix composites having a good transverse mechanical properties, electrical conductivity, high thermal conductivity , having a higher corrosion resistance . This paper uses netting lamination , tungsten fiber weft , copper ( small) for the two-dimensional warp knitted mesh, the mesh and copper billets stacked together in a vacuum  sandblasted tungsten target  infiltration preparation of new tungsten copper contacts materials , and electrical properties were studied in vacuo . Low gas content and impurity content of the rule of law into the tungsten-copper composite electrode material tissue while avoiding the traditional process of mixing the powder caused by uneven uneven , making partial contact material does not appear in the course of ablation phenomenon . This paper studied the preparation of novel specific copper tungsten contact material , the fibrous  Tungsten copper alloy  liquid infiltration process . While using a small current through the circuit design their own experiments , direct and effective measure of the value of its closure and arc life, breakdown voltage , arc resistance and examine the strength of the new tungsten-copper contact materials by observing the morphology after arc erosion according to arcing and electrical contact theory, the erosion mechanism arc erosion morphology .

Good wear resistance and high temperature properties of tungsten sheet

In the use of diamond saw blades or drill to process high quartz content of the concrete pavement, concrete structures and high hardness , hard red granite sawing materials like high-density, high quartz content , often used to join a large number of tungsten metal powder , improved high-temperature strength and wear resistance of the carcass to improve product performance . Good wear resistance and high tungsten carbide plate of tungsten , but the high sintering temperature , generally in diamond segments carcass adding other low melting point metal powder such as copper , cobalt, nickel and other elements as the bonding phase , and add some low melting point metal tin elements to reduce the sintering temperature . In the diamond tool industry , the traditional method is the use of elemental powders obtained by mechanical mixing matrix material , due to the large proportion of tungsten , and other difficult process of mixing the powder mixing, likely to cause uneven carcass composition and organization , resulting in  Tungsten copper alloy  of the tool . In recent years, research on the application of pre- alloy powder ultrafine diamond tools carcass more and more , and achieved good results using the application or part of adding these pre- alloy powder were able to significantly improve the hardness and cutting the carcass performance . While research on the preparation of ultrafine tungsten-copper powder material , and made good sintering properties have been reported , such as tungsten, copper powder ultrafine high activity, low sintering temperature , high alloy densification , homogeneous and so on.

Molybdenum dis kto its excellent physical and chemical properties have been widely applied

Molybdenum due to its excellent physical and chemical properties are widely used, is the core of molybdenum alloy substrate supporting parts thyristor semiconductor modules , which plays to protect the chip to work, to extend the fatigue life of the thyristor and so on. But there are some applications of molybdenum problems , such as difficulty plating itself , molybdenum itself easily oxidized in air at 400 ℃, the surface oxide film is easily generated . However, molybdenum oxide  molybdenum wire  not play any protective effect, so molybdenum best for semiconductor devices coated with a protective film . This paper studies the field of molybdenum plating areas , focusing on the pre-treatment process of molybdenum , molybdenum , ruthenium plating and electroplating  molybdenum electrode  coating adhesion and uniformity improvements were studied . In this paper, pre-treatment process for molybdenum were studied . Pre-treatment process for molybdenum molybdenum subsequent coating quality has a crucial impact on the existing pre-treatment process , if applied to industrial production have many problems , so this paper by testing and analysis , development of a kinds of new pre-treatment process , not only to achieve the removal of oil , peel oxide and other results, while enhancing the substrate and subsequent coating machinery bite force for subsequent plating ruthenium laid a solid foundation , but also to achieve a safe, efficient target.

Platinum metal metallurgical physical properties make it a spot weldability is poor

Platinum metal metallurgical physical properties make it a spot weldability is poor, platinum products at home and abroad to connect far more riveting process . Developed by the authors of this " single- cycle pulse key projection welding foil new technology" , as well as to achieve the two layers of platinum foil product no cushion welded directly in the trial production of some products can be indicated in the application . Introduced the new technology is the main process characteristics and   molybdenum alloys   mechanism . Product launch tube projection welding weld head surface topography x50 bump bonding design, direct spot platinum foil electrode and the workpiece surface will produce serious bonding process which destroys the normal spot . Domestic and international studies show that bonding is difficult to achieve with products direct spot one important reason . After use of  molybdenum screws  , the current can be in the dyeing of the bump and the internal heat increases the distance between the electrode surface , the temperature gradient along the thickness direction is easily formed . Meanwhile, the projection welding electrode end face than the large multi- spot welding , a significant increase of the contact area of ​​the electrode and the workpiece , reducing the welding electrode and the workpiece surface the heating intensity , which are effective in reducing the sticking of the electrode . Further , since the projection welding can reduce the energy input ( reduced welding current ) , reducing grain products grew , the key to improve the welding heat brittleness .

Projection welding spot is tungsten carbide plate larger than the electrode face significantly

Phase material weldability is poor, therefore , domestic rice Chuan Liu products connections using riveting process . To this end , the development of a single- cycle pulse of platinum foil projection welding of new technology, the two layers as well as the non- cushion foil product key is welded directly . After the lamp is designed with raised bumps , bumps at the current can be concentrated on the internal heat source and increases the distance between the electrode surfaces , easy to form a  tungsten carbide plate  in the thickness direction . Meanwhile, the projection welding electrode end face larger than the spot welding , a significant increase of the contact area of ​​the electrode and the workpiece , reducing the welding  sandblasted tungsten target  and the surface of the heating strength , effectively reduce the sticking of the electrode . Further , since the projection welding heat input can be reduced ( reduced welding current ) , reducing grain products grown , heat welding of the aluminum to improve brittleness . Designed bumps and tested in practice , the choice is less detailed projections play an important part of the benefits . The choice of the shape of the bumps on the suppression of the bump foil tears , generally spherical shape. Spherical bumps having a high strength welded joints , and conical -shaped bumps can remove the residual stress concentration at the bottom and the maximum circumference of the cracks , at the same time , the crush bumps process also easy to produce and move along splash.

Molybdenum copper material commonly used conventional powder metallurgy sintering infiltration was prepared

Molybdenum Copper is composed of two immiscible fake metal alloy, molybdenum, copper material density is low, and tungsten-copper material deformation processing more easily, these features make the material in the material requiring high quality aerospace, Portable equipment has good application prospects. For sealing molybdenum copper, its expansion coefficient difference with ceramic larger sealing surface near the greater the stress, the more likely porcelain burst. Therefore, to obtain a hermetic seal, sealing metal and ceramic must have close to the thermal  tungsten carbide ball  and a certain degree of plasticity. Mo-Cu materials generally used conventional method of powder metallurgy sintering  tungsten balls  immiscible as Mo and Cu, it is difficult to obtain fully dense Mo-Cu materials, raw materials present in the sealing gap affects the airtightness and thermal expansion properties. Mechanical alloying is a high energy ball milling machine by rotating or vibrating the powder to medium strong impact, grinding and mixing, the powder is crushed into nano-sized particles to obtain a uniform distribution of Mo-Cu composite powders. Preparing a sintered composite network-like structure, to improve the density and improve the sealing properties of materials.

Department of foil rolling mill tungsten electrode work roll surface and aluminum foil rolls printed

Department of foil rolling mill work roll surface and aluminum foil rolls printed surface causes lateral stripe test in order to clear foil rolling mill work rolls lateral surface of the formation process of the action roller printing, foil rolling mill for the production control process part of every action performed were tested demonstrated. Push the new work roll support rollers and a new, check the hydraulic system, the calibration rolling baseline. 60T pressure with a continuous three  tungsten electrode  against the calibration operation, out of work rolls checking roller printing. With 120T pressure  copper molybdenum  pressed against the calibration operation three times, out of work rolls checking roller printing. 60T 250m/min speed with pressure and heat roller, every 5 minutes, for 2 times, draw roller Check roller printing. 120T pressure and speed of 350m/min with hot roll, every 5 minutes, for 2 times, draw roller Check roller printing. Open Gap State slow-roll five consecutive times, out of work rolls checking roller printing.

Transparent quartz glass softening temperature, thermal shock resistance, is the best source of strong light material

Transparent quartz glass softening temperature, thermal shock resistance, strong light source material is the best, most high-intensity discharge lamps are quartz glass as the arc  tungsten carbide ball  material. However, due to the expansion coefficient of quartz glass is low (room temperature to 1000 ℃, α = 5.5 × 10-7 / K) and the sealing temperature (2000 ~ 2200 ℃), so find similar coefficient of thermal expansion match with the refractory metal sealing. However, quartz glass with the blade-like molybdenum foil (temperature α = 5.3 × 10-6 / K) to be well sealed non-matching, the molybdenum  molybdenum foil  inner tube plays a dual role. In the 1960s and 1980s, China's major will be 0.55 mm thick sheet of pure molybdenum foil cut to a width of 2 ~ 4 mm, length 100 ~ 150 mm narrow-band, and then into a bladed electrolytic corrosion sealing material. Disadvantage is that the process is unstable quality, consistency is poor, low productivity, material loss, a more continuous operation can not adapt.

Molybdenum is added to the rare earth oxide , molybdenum greatly improved performance

Molybdenum is added to the rare earth oxide , molybdenum greatly improved performance . In recent years , increasing attention molybdenum application industry 's attention. Molybdenum is mainly used in high-precision electronic warfare and narrowband satellite communications , tubes , electric light and other fields. In the electronics industry , vacuum electronic devices are a large vacuum and gas -based electron (ion ) produce a variety of effects , amplified , converted signal is active devices,  tungsten balls  , launch tubes , microwave tubes, camera tubes , display tubes, vacuum optoelectronic devices, vacuum switch tube , X-ray tubes, new lighting , and gas lasers. Molybdenum narrow strip , foil , light industry mainly for sealing quartz glass , electric vacuum tubes, traveling wave tubes ,  tungsten electrode  lamps , high pressure mercury lamp , high pressure sodium , metal halide lamps , television lamp . Vacuum , gas-tight sealing of pipe materials have been using pure molybdenum foil , molybdenum rod . In such a tight molybdenum foil tube , vacuum production process, when the temperature reaches the softening temperature of the quartz glass 1800 ℃ , the pure molybdenum foil recrystallization , the plastic drop rapidly showed severe recrystallization brittleness clip tight seal during the molybdenum disc rupture great possibility. Rare molybdenum at 1800 ℃ when its plasticity and creep properties are good, molybdenum disc rupture phenomenon does not occur .

Molybdenum and molybdenum alloy metal temperature resistant materials, high strength can maintain a high

Molybdenum and molybdenum alloy metallic high temperature materials, the high temperature to maintain a high strength, but also has a high thermal conductivity and low thermal expansion coefficient, good thermal shock resistance, electrical conductivity and wear resistance, is widely used in aerospace field, including spacecraft solar  tungsten electrode  sheet molybdenum foil. However, molybdenum is relatively poor weldability and high temperature strongly oxidized, the oxide film is no protective effect, so the surface to be plated molybdenum modification. As the silver brazing with good  tungsten carbide inserts , usually silver plating surface of the molybdenum to improve the weldability and to reduce or prevent the oxidation of molybdenum. However, there is often a natural molybdenum oxide surface, the coating will interfere with adsorption, coupled between the molybdenum and silver alloy (solid solution) is difficult, therefore, molybdenum, silver plating surface is difficult, often plated directly adhered strong, coating quality is poor. Difficulties molybdenum plating solution approach is generally used in the pre-plating or strike plating layer deposited on the first surface of a thin metal (such as chromium, nickel, gold, rhodium, platinum, etc.), and then continue through the high temperature heat treatment plating process more cumbersome.

Extensive use of powder metallurgy production methods to produce molybdenum disk products

Molybdenum is a high temperature material, is widely used in modern industry, but its price is higher, in order to reduce costs, and now widely produced by powder metallurgy method to produce molybdenum products, molybdenum crucible is one of them, this article  sandblasted tungsten target  the molybdenum combination of repression crucible mold design. Parts and die design features molybdenum crucible shape and size. Which is  copper molybdenum  by wall parts and a lower tapered tube composed of two parts, and the tube wall thickness ratio of the height close to the manual pressing is not easy to ensure uniform density compacts, and prone to cracking. After repeated in the production process adjustment, find the following ideal combination of manual mold design.

two projects has passed Shaanxi Province scientific and technological achievements

Recently, Jinduicheng Molybdenum Group Co., Ltd. " roasted molybdenum concentrate and industrialization of key equipment and technology ", " Molybdenum beneficiation research and application of new technology ," two projects has passed Shaanxi Province scientific and technological achievements . Copper Lead Zinc Tin nickel , China Nonferrous network, a small metal , scrap metal.
" Roasted molybdenum plating concentrate key equipment and technology and industrialization " project, by the Chinese Academy of Sciences , Northwestern Polytechnical University Vice- Chancellor, Professor Wei B. other seven experts to conduct results of identification. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. The project belongs to Shaanxi provincial key scientific and technological projects , " molybdenum industry chain technology upgrading and industrial research" subkey, Gold and Molybdenum Group focused research project during the 2006-2007 period , the company Burden Products Division project, carried out a "multi- hearth furnace roasting technology " research, the formation of" multiple hearth furnace superiority in terms of molybdenum roasting research and industrialization of the concept, " research results. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. The implementation of the outcome , greatly enhance the Molybdenum crucible roasting key technology and equipment level, to improve the level of automation of production lines and unit personnel labor productivity, expand production capacity, energy saving , reduce costs , solve the original production line environment pollution problems molybdenum molybdenum Group opened gold chain . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal.
Appraisal meeting, identified group listened carefully to all the experts report on the project team reviewed the relevant technical information . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. For project-related cases , members of the Group carried out a detailed , serious, rigorous questioning and discussion . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. Identification of group of experts noted that the project for the production of roasted molybdenum concentrate ( high melting ) demand for products of key equipment and technology , process and product performance of the system such as research and development , innovation highlights , and achieved remarkable economic and social efficiency, the overall results reached the international advanced level. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. Among them, the furnace temperature spray technology, roasted molybdenum concentrate rapid cooling technology, high technology is an international preparation of soluble molybdenum products industry first . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal.
" Molybdenum beneficiation new technology research and application" project , the company is a long process for the original dressing , equipment sets and more, high energy consumption , combined with the nature of the ore , molybdenum selection of energy-saving and quality and key technology research and application integration , the main applications mill 10,000 tons in flowers / Nisshin production line. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. Project through the crushing production line applications , " three high-pressure section of a roller mill closed + " process , reducing the particle size of crushed minerals ; molybdenum rougher use " column machine + regrinding middlings " new technology to improve the rougher recoveries ; molybdenum choose a " joint + bubble column machine scrub the" new technology , to achieve synchronization of molybdenum concentrate grade and recovery increased ; molybdenum dehydrated using "enrichment + filter press ," two-stage process , than the original process short , to improve the working environment. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal.
Ph.D. from the Chang'an University , academician Zhong-Li Tang led the team of scientific and technological achievements Provincial Science and Technology Department experts group listened attentively company " molybdenum beneficiation new technology research and application " project team reporting , reviewing the relevant technical information , through questioning and discussion, agreed that the new process is simple , stable , energy-saving effect is obvious, the economic and social benefits significantly , the overall research results reached the international advanced level , where " three high-pressure section of a roller mill closed + " and " column machine + regrinding middlings combined process " reached the international advanced level , it is recommended in the nonferrous metals industry application. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal.

China Nonferrous network
Editor: Ann

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Inner proven a very large amount of molybdenum deposit early count 2.2 billion tons of ore

2013 年 4 月 9, 2010 China Economic Net 8 from IDLR was informed by the Inner Mongolia Geological Prospecting Fund established Yao Xing and the county Cao four Molybdenum crucible exploration project, recently passed expert field acceptance.  Preliminary estimates the amount of 2.2 billion tons of molybdenum ore, molybdenum metal content of 1.76 million tons, as a large molybdenum deposit.
According IDLR staff, this acceptance by experts Cao four yao molybdenum, high grade, shallow, thick, easy to exploit, with good prospects for the development and utilization. CInner focused exploration as one constituency, located Wulanchabu Xing and the county's CAO four yao molybdenum ore district at Xing and the county is only 5 km, and its exploration area of ​​38.99 square kilometers.
Beginning in 2010, Inner Mongolia Geological Prospecting Fund's cumulative investment in the project 53,280,000 yuan.  After a pre-investigation and survey, completed drilling 34614.53 m, molybdenum ore, found out the distribution, size, shape and grade changes, etc.
Reporters learned that Cao four yao molybdenum exploration project also circle the body of four lead-zinc, lead and zinc resources to preliminary estimates 19,400 tons of lead and zinc average grade of 0.27% and 2.22%. .
It is reported that molybdenum is mainly used for the production of steel having excellent mechanical properties, as long as a small amount of molybdenum alloys, can enhance its hardness and toughness, many molybdenum compounds are useful in the manufacture of chemical reagents, pharmaceuticals, fuels, lubricants and the like. Share to: QQ space Sina microblogging Tencent microblogging letter more 2
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China Nonferrous network, a small metal

Xing and the county resource exploration of molybdenum up to 1.8 million tons 2013 年 3 月 27 Nikko Xing and the county and the county government office large molybdenum mine located in the territory of Inner Mongolia Hing and county towns, exploration area 38.99 square kilometers, molybdenum plating ore exploration work by the Henan Bureau of Geology and Mineral Exploration Institute of Geology second commitment has been transferred to the exploration stage. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. Pre-investigation work began in May 2010, the completion of drilling 3; census work began in May 2011, the completion of drilling 33, a total footage of 22,000 meters, have been completed by the end of 2012, according to census results, is controlled molybdenum ore body 2000 meters long from east to north-south width of 1600 meters, the initial estimate (333) molybdenum metal resources up to 180 million tons, an average ore grade of 0.081%, and accompanied by lead, zinc, silver and other metals. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. March 1 has begun to enter the exploration stage, at present, a total of 20 drilling machine drilling, drilling 20 exploration stage plan, to be completed by June 15 all geological exploration work, and enter the data compilation and detailed geological surveys report preparation stage

Existing business earnings decline

" Both projects are located in the downstream industry chain , the termination of these two projects will not have an impact on the company's existing operations in China Nonferrous network ." CMOC think . China Nonferrous network .
But in fact , once cut these two can bring to the company in the future growth of the equity investment projects , existing business alone , CMOC performance is difficult to appear optimistic expectations. China Nonferrous network .
"The company's basic no Aspect molybdenum products in China Nonferrous network ." Shanghai , a brokerage industry analyst at the metal interview with reporters , said the company is now the main product of the molybdenum market prices at a historic low , although the beginning of the year when there have been a wave rally, but not much. China Nonferrous network .
In fact, last year, the domestic price of molybdenum dropped to 100,000 yuan / ton historic lows, has been close to a lot of molybdenum mine production costs , but also led CMOC last year's third quarter , when performance falls significantly . China Nonferrous network .
Since the company's main molybdenum prices, CMOC in net profit last year despite only fell 6.07% on , but if the eliminating income tax rate reduction and other factors , the company 's main business profit last year actually decreased by 31%. China Nonferrous network .
Main results of last year which led to declining factors, in addition to Molybdenum tube , molybdenum and iron products, production decline and, more importantly, molybdenum products, profit margins decline, in 2012 , the company's products and precious metals molybdenum-related products profits have different degrees of decline, the only exception tungsten products , profit margins also increased by only 2 percentage points. China Nonferrous network .
As the downstream market demand , so that over-reliance on the downstream market CMOC had to face the dilemma of cuts . China Nonferrous network . According to the company 's forecasts, in 2013 the company's molybdenum concentrate production from 32,500 tons the previous year dropped to 29,200 tons , which previously has been substantial growth in tungsten , this year's production is also only a slight increase of 160 tons or so. China Nonferrous network .
For the company's future will continue to launch two terminated equity investment projects , CMOC did not give response. China Nonferrous network .
From the company's current financial situation, assets and liabilities rate of only 21.45% , 2012 Closing the monetary funds and 2.7 billion yuan , while in January this year, the company has just come up with 1.5 billion yuan in cash for the purchase of the bank's financial products, so the company money is not tight. China Nonferrous network .
"Expects the company's future may continue through the issuance of bonds to raise funds . China Nonferrous network ." Dongxing Securities analyst Lin Yang nonferrous metals industry were analyzed in the report had said.

Tungsten products had become the focus of earnings

In earlier years, China Molybdenum Tungsten wire products are not the main business, from 2000 , when the company began to study the use of molybdenum tailings were extracted scheelite . China Nonferrous network .
In CMOC development strategy which , molybdenum products are still the mainstay , tungsten products and precious metals for the two wings , but since 2009 , the company gradually force on tungsten products , the company's main business operations and profits attributable proportion of the more higher and higher . China Nonferrous network .
Company has disclosed financial data show that in 2009 when the company's revenue share of tungsten products and profits in the proportion constitutes only 6.02% , respectively, and 8.09% ; while by 2012 the proportion of these two has been elevated to 16.27% and 42.7% . China Nonferrous network .
That is, in the past year, China Molybdenum Tungsten products contributed more than 40% of the profits. China Nonferrous network .
More obvious is that as the company 's main business molybdenum downstream steel products subject to the impact of market contraction , margin fluctuated ; contrast, tungsten products, the profit is higher in the year . China Nonferrous network .
Because it is in the tailings extraction, mining and grinding without such links , saving a lot of cost , so CMOC in tungsten products with higher profit margins on products for the main business of tungsten and Zhang Xiamen Tungsten tungsten . China Nonferrous network .
Tungsten products in the whole industry chain among the highest profit margins is the upstream and downstream tungsten mining tungsten material , tungsten steel, tungsten carbide and chemicals . China Nonferrous network . According to industry analyst estimates , the gross profit margin tungsten can reach 40 % or more, high-performance carbide downstream margin is also 25% to 40 %, while in the industrial chain in the side of APT ( APT ) , carbonation tungsten and tungsten powder , almost all profit. China Nonferrous network .
2012 CMOC listing, at 3.646 billion yuan of equity investment projects , among them, 2.858 billion yuan was used for the project as well as high-performance tungsten carbide and tungsten alloy metal products deep processing projects. China Nonferrous network . Carbide projects in which the company's investment in the highest, 1.877 billion yuan , while the construction of the project will also get rid of the current industry generally more low-end carbide field has been imported into the high-end products occupy hard alloy fields. China Nonferrous network .
The various brokerage analysts listed in the company , they almost unanimously optimistic about the company 's tungsten products deep processing, however it did not, the company eventually forced to insufficient fund-raising , had to cut these two projects.

CMOC Why leave cash Scotia Project

 2013 年 3 月 21 日 China Times With the imminent start of this year, but now CMOC had to temporarily abandon the construction of the two projects, because that is when the listing last October , plans to raise funds 3.646 billion yuan, can actually raise only 558 million yuan of funds, the funds raised simply can not meet the demand raise investment projects. China Nonferrous network.
High-tech Zone in Luoyang City, Henan Province, the west end of Riverside Road, more than 300 million square meters of land a silence. China Nonferrous network.
In this piece of land north of a large plant is CMOC (603993) a wholly owned subsidiary of Luoyang Molybdenum target  Group Metal Materials Co., Ltd. The company is mainly responsible for China Molybdenum Tungsten Molybdenum series smelting and deep processing. China Nonferrous network.
2011, will be located in Luoyang city government metallic materials company's more than 300 million square meters next to land 126 million yuan price auction gave CMOC for future CMOC construction projects as well as high-performance tungsten carbide alloy deep-processing projects . China Nonferrous network.
With the imminent start of this year, but now CMOC had to temporarily abandon the construction of the two projects, because that is when the listing of the Company in October last year, plans to raise funds 3.646 billion yuan, but in fact to raise money for only 558 million yuan, the proceeds can not meet the demand raise investment projects. China Nonferrous network.
However, the CMOC give up two equity investment projects, it is precisely the company's future in the tungsten industry chain downstream processing aspects of the two key projects, the most recent years, tungsten, molybdenum products have gradually replaced products become CMOC a new profit growth point, these two projects abortive, making CMOC future earnings expectations changed significantly. China Nonferrous network.

light emitting diodes and solar cells has broad prospects

Molybdenite industry will take some time, driven by demand for molybdenum limited
Unlike zero bandgap of graphene, molybdenite with 1.8 eV (electron-volts) energy gap between the GaAs (bandgap 1.4 eV) and GaN (bandgap 3.4 eV) between Therefore the use of that material can be fabricated simultaneously with electronic and optical function of the chip Molybdenite is the good performance of the next generation of semiconductor materials in the manufacture of ultra-small transistors, light emitting diodes and solar cells has broad prospects, but the technology is still in the laboratory stage, from industrialization and the distance from the future, if to large-scale application of the technology, you can significantly improve the contribution of global molybdenum metal structure.  The current global molybdenum consumption is about 210,000 tons, the current global electronic-grade photovoltaic grade silicon with an annual demand of about 200,000 tons, of which 50% is replaced assume, then Molybdenum tube consumption will add 105,000 tons / year , accounting for the current 50% of molybdenum consumption, which will significantly improve the industry's global supply and demand structure of molybdenum. But now, molybdenite applications in semiconductor materials, driven by demand for molybdenum Ltd.

the molybdenum film is deposited on a substrate

Molybdenum target application prospect of industrialization will take time 2010 China Nonferrous network - non-ferrous metal authoritative media platform California NanoSystems Institute (CNSI) successful use of MoS2 ( molybdenite , molybdenum disulfide ) produced the Hui molybdenum based flexible micro- processing chip to MoS2 -based microchip is only equal to 20% the size of the silicon chip , low power consumption.  Molybdenite layer material shows a good semiconductor characteristics , some performance over the now widely used silicon and graphene , is expected to become the next generation of semiconductor materials.
1 molybdenite -performance semiconductor materials, application prospects
Molybdenite based flexible micro- processing chip was first proposed by the Swiss Institute of Technology in Lausanne (EPFL) Laboratory of nanoelectronics and structure proposed and is expected to become the next generation of semiconductor material , its power consumption is much lower than the silicon material , but also to produce a smaller transistors , and with this new generation of
The laboratory had earlier used methods for graphene research . Researchers crushed between the folded tape molybdenite crystals , layers of peeling , until all that is left is a single atom thick slices .  Then, the molybdenum film is deposited on a substrate , and then add a layer of insulating material , and using standard photolithography to add the source electrode and the drain electrode and the gate , so that a transistor is formed .Molybdenite transistor with electrical mobility transistors with similar graphene nanoribbons made ​​.
Molybdenite is a semiconductor that allows electronic jump over , this attribute is called the band gap can be used for digital transistors. No graphene bandgap semiconductors difficult to put it into graphene prospect that ultra- high-speed analog circuits , telecommunications and radar. Molybdenite bandgap particular promise for more efficient flexible solar cells , electronics or high-performance digital microprocessors. Molybdenite is molybdenum disulfide. . Swiss Institute of Technology EPFL researchers believe that molybdenite is abundant in nature , commonly used in smelting alloys and other fields, but the electrical properties of study before it is not much, but in fact molybdenite single semiconductor material has good properties.  And is now widely used in silicon materials, molybdenite has two main advantages: First, to achieve the same effects are smaller .  Only 0.65 nanometers thick molybdenite material in which electrons can be like at 2 nm thick silicon material to move freely as in the same time, existing technology can not be made ​​of silicon material takes molybdenite material as thin ; Second, more energy low .  It is estimated that molybdenite transistors made in the standby mode energy consumption is only about one hundred thousandth of silicon transistors .

adjust the industrial structure

Guo Guanghua recommended the development of national industry development plan molybdenum industry, strengthen the government's macro-control efforts, introduced to promote the integration of the molybdenum industry enterprises preferential policies; in Molybdenum production, strict implementation of the national "Molybdenum crucible industry access conditions" of the relevant provisions in the production process should be used in line with national environmental regulations dust, dust collection technology and exhaust comprehensive recycling process to ensure that emissions meet national standards; accelerate the development of a large international conglomerate molybdenum industry, the introduction of some of the key industrial enterprises tilt molybdenum industrial policy, measures, programs, through industry consolidation to achieve production capacity to the advantage of enterprises to focus and guide product mix to higher value-added processed products tilt.
Enterprise development is inseparable from the support and help local governments, which, Guo Guanghua deep feelings. Therefore, his third proposal is "on the financial funds exempt from corporate income tax proposal."
Guang-Hua Guo believes that the financial funds to run as a government to regulate the economy an important economic lever, adjust the industrial structure, optimize resource allocation direction, balance regional differences play an important role. At present, all levels of government and relevant departments every year to financial assistance, subsidies, interest payments on loans and other types of financial support in the form of special funds to enterprises, especially SMEs. He suggested that in order to better play the financial funds of the enterprise reform and development support, advice fiscal funds exempt from corporate income tax, so that the funds play a greater role.

All about the molybdenum disk industry and enterprise development.

First elected to the National People's Congress of the new Hualong (603399) Chairman Guo Guanghua is truly "old behalf," he was elected county deputies, Municipal People's Congress, the provincial People's Congress, on deputies quite understand the responsibilities and obligations deep.  The People's Congress, Guo Guanghua proposal has three, all about the molybdenum industry and enterprise development.
Guo Guanghua first proposal was "processing trade goods on the open molybdenum recommendations." . He said that the current policy has led to domestic and international Molybdenum crucible products market fragmentation, the international market price is high, low domestic prices and international high-quality raw materials into less than domestic, is not conducive to the effective use of international resources, is not conducive to curb the exploitation of small mines is not conducive to the protection of domestic resources. To this end, he suggested that molybdenum products processing trade can be quota system; selected qualified excellent processing enterprises; processing trade in the form of molybdenum or molybdenum processed into ferro molybdenum, molybdenum powder and metal products, and processed into molybdenum molybdenum.
According to Guo Guanghua, China's molybdenum plating Industry Status is: small scale, quantity, industry concentration is low; environmental protection facilities are not matching, process equipment behind, serious environmental pollution; low productivity, lack of core competitiveness, the lack of new products R & D capability, and China molybdenum resource superpower disproportionate. Therefore, his second proposal was "on the strengthening of Molybdenum Molybdenum industry management banning small manufacturing enterprises Proposal"

with the extension of molybdenum alloy strength

Sun Jun Task Force revealed the rare earth oxide doped molybdenum alloy grains and intragranular and grain boundary characteristics and particle size effect toughening mechanism, a toughening of quantitative analytical model proposed toughening of nano-doped new ideas. China Nonferrous network. On this basis, Sun Jun research group has developed a molecular liquid doped rare earth oxides prepared by mixing nano-Molybdenum tube alloy containing key technologies to solve the rare earth oxide nano-technology and non-reunion, and the molybdenum grain internal and uniformly dispersed grain boundaries, as well as nano-ultrafine grain structure constraints such as high temperature stability of development of the sector three "bottleneck" problem. China Nonferrous network. The prepared alloy oxide having an average particle size of less than 80nm, molybdenum submicron grain size can be, with the extension of molybdenum alloy strength, toughness more than world-class companies have reported similar materials best level, while significantly reducing their plastic brittle transition temperature, and significantly improves the recrystallization temperature of the alloy at elevated temperature and high temperature tensile strength and ductility.
The project-related technology has been in Jinduicheng Molybdenum Company to achieve a scale applications, has achieved remarkable economic and social benefits, and access to 2012 Department of Education Technology Invention Award. China Nonferrous network. The research was supported by the National Natural Science Foundation of China and other countries co-financed projects

China has successfully developed a molybdenum alloy high strength and high ductility

 2013 年 3 月 4, 2009 China Rare Earth Molybdenum is a rare refractory metals, not only widely used in the production of stainless steel and other steel materials, but also because molybdenum alloy itself has excellent thermal conductivity, high temperature, etc. However, in aerospace, machinery, metallurgy and other fields has broad application prospects. China Nonferrous network. China's molybdenum reserves, production and consumption volume ranking first in the world. China Nonferrous network. But Mo has a low temperature brittleness, low strength, ductility characteristics of poor molybdenum alloy deep processing more difficult, its application is more restricted, so many years of molybdenum in molybdenum alloy products mainly primary products. China Nonferrous network. Research and development with better performance, higher value-added molybdenum alloys, Molybdenum target industry for our country has an extremely important significance. China Nonferrous network.
Currently the major international use of rare earth oxide dispersion strengthened molybdenum alloy, but usually doped molybdenum oxide or molybdenum powder as solid, doped rare earth oxides can be refined to micron or sub-micron level, and were located at the grain boundaries, not only strengthening effect is limited, and molybdenum alloys prone to early fracture. China Nonferrous network. How to simultaneously improve the strength and extension of molybdenum alloy, toughness, has been a challenging problem in this field. China Nonferrous network.
Xi'an Jiaotong University, State Key Laboratory of Materials Task Force Sun Jun lasted more than 10 years, the recent breakthrough in this field. China Nonferrous network. Their actual needs from the engineering, materials preparation technology dating back to the difficulty, concise and solve key scientific issues related to, and then push the material preparation technology, innovation and breakthroughs. China Nonferrous network. They have developed a nano-structured material dispersion strengthened molybdenum alloy, reinforced with nano-rare earth oxide particles and ultrafine-grained microstructure, in obtaining a significant strengthening at the same time, the tensile ductility doubled. China Nonferrous network. The results are published online in the journal Nature Materials on the website. China Nonferrous network. Accreditation people think this is a very important original research results, has important scientific and application value. China Nonferrous network.

Rainbow Xiang Mining v. CMOC infringement withdrawal

 2011 Stock Times News Network May 27 evening, CMOC (603993) announcement that rainbow Xiang Luoyang Mining Ltd. v. infringement by company rainbow Cheung Company May 14, 2013 for withdrawal of prosecution, the Luoyang Intermediate Court review, quasi Xufei Hong Xiang withdrew its prosecution. Copper Lead Zinc Tin  nickel, China Nonferrous network, a small metal, scrap metal. First instance court costs by the plaintiff company Cheung rainbow burden on CMOC current period profits and other profits or no significant impact. Copper Lead Zinc Tin  nickel, China Nonferrous network, a small metal, scrap metal.Partial pressure of the furnace by adjusting the temperature to control the amount of molybdenum chloride, molybdenum furnace, the more the higher the voltage divider.  Caolin You said that the use of the technology, they each received a chip size, atomic diameters thick molybdenum sulfide layer film.  Also obtained by changing the partial pressure of 2-4 atoms thick Molybdenum crucible sulfide film diameter. Researchers are now trying to find other ways to produce similar but each atomic layer film composed of different materials.  Meanwhile, they are also using new technology to produce field-effect transistors and light-emitting diodes.
The thinner the semiconductor thin film, the nano-electronic devices more popular. North Carolina State University, the thickness can be prepared only a single atom diameter semiconductor thin film, the key lies in its choice of materials.the unique layered structure of molybdenum disulfide, molybdenum sulfide layer is a direct band gap, as compared with the conventional silicon material, it is smaller, the dielectric constant is smaller, which means that the transistors than the conventional more power.  Thus, a new growth mechanism of molybdenum sulfide appearance can make a single layer molybdenum disulfide has been in the process of preparing methodological weaknesses, and thus open the door to this fan applications.

the more the higher the voltage divider

Partial pressure of the furnace by adjusting the temperature to control the amount of molybdenum chloride, molybdenum plating furnace, the more the higher the voltage divider. Caolin You said that the use of the technology, they each received a chip size, atomic diameters thick molybdenum sulfide layer film.  Also obtained by changing the partial pressure of 2-4 atoms thick molybdenum sulfide film diameter. Researchers are now trying to find other ways to produce similar but each atomic layer film composed of different materials.  Meanwhile, they are also using new technology to produce field-effect transistors and light-emitting diodes.
The thinner the semiconductor thin film, the nano-electronic devices more popular.  North Carolina State University, the thickness can be prepared only a single atom diameter semiconductor thin film, the key lies in its choice of materials.  The unique layered structure of molybdenum disulfide, molybdenum sulfide layer is a direct band gap, as compared with the conventional silicon material, it is smaller, the dielectric constant is smaller, which means that the transistors than the conventional more power.  Thus, a new growth mechanism of molybdenum sulfide appearance can make a single layer molybdenum disulfide has been in the process of preparing methodological weaknesses, and thus open the door to this fan applications.

Molybdenum disulfide material is expected to be brought into the atomic -level semiconductor technology

Sohu North Carolina State University researchers said recently that they have developed atomic -level manufacture of high quality semiconductor thin film ( film thickness of only a single atom diameter ) of new technology.  Assistant professor of materials science and engineering Caolin You ( transliteration ) said that the new technology can reduce the size of the existing semiconductor technology to the atomic level , including lasers, light emitting diodes and computer chips. Researchers studied the material is molybdenum sulfide , which is an inexpensive semiconductor materials, electronic and optical properties of the semiconductor industry with the current materials used for similar . However , molybdenum disulfide and other semiconductor materials are different and because it is formed as a single atom monolayer layered growth , while the film without losing the original material properties.
In the new technique, the researchers sulfur and molybdenum chloride powder placed in the furnace and the temperature gradually raised to 850 degrees Celsius , then the two powders appear evaporation ( vaporization ) and the occurrence of a chemical reaction to form molybdenum sulfide . To maintain high molybdenum sulfide can be deposited on the substrate , forming a thin film of molybdenum sulfide . Caolin You said the key to their success is to find a new growth mechanism of Molybdenum crucible disulfide , namely self-limiting growth by controlling the pressure and the vapor pressure high-temperature furnace carved to precisely control the thickness of the layer of molybdenum sulfide .
Suspended in the air divider represents the atoms or molecules aggregate into a solid precipitated on the substrate trends ; vapor pressure represents a solid substrate vaporized atoms or molecules into the air trend.  Is obtained on the substrate layer , molybdenum sulfide vapor partial pressure must be above ; partial pressure is higher, in the end portion of the deposited layer of the more molybdenum sulfide .  If the partial pressure is higher than in the single-layer film formed on the substrate in vapor pressure , but lower than the vapor pressure of the formation of two-layer film , then the partial pressure and vapor pressure to ensure that this balance between the molybdenum sulfide in a single layer film formation after the film growth stops automatically ceased to multilayer development .  This is the " self-limiting growth of the film ."

Homemade pockets molybdenum miners tied crotch stolen

 Chinese Business Morning News
News Guide: Using a prepared pocket, five miners would molybdenum plating loaded therein, and hid in the inner thigh steal
Recently, police received Lianshanqu Huludao Steel Tunzhen Hill Mining Molybdenum Company Limited ditch horse police, said the phenomenon of theft molybdenum mine.  Police investigators investigate immediately.  May 3, police in a mini-van and the rear spare tire under the front passenger seat, seized six bags of natural molybdenum concentrate, weight 48 kg, the spot Mengmou Jiamou, Zhang and other five people arrested.  After interrogation, five people are mine workers Mengmou is the squad leader.  Since April this year, five people use the underground working of the machine, while the underground no other person, the use of pre-prepared pants made ​​of old shirt pocket, the molybdenum loaded therein, and hid in the inner thigh Pirates of the mine.
According to police investigators, because overalls mast, so tied to the inside of the thigh theft molybdenum mine security can not easily be found, the suspects each with up to 20 pounds of natural molybdenum out of the well. Currently, the five suspects had been under criminal detention, the case is still under trial.

Qingtian County, Zhejiang Province

Qingtian County, Zhejiang Province, molybdenum ore reserves in the first place China's Qingtian Network May 16, reporters from Qingtian County Land Bureau was informed that, after two years of the county's mineral resources use survey results released. The results showed that Qingtian County amounted to 15,662.92 tons of molybdenum plating metal retention, accounting for 80% of the province's reserves, pyrophyllite ore 15,385,400 tons, accounting for 50% of the province's reserves, reserves rank first in Zhejiang Province.
It is reported that after Qingtian County, Zhejiang Institute of Geological Survey, Geological Brigade province eleven nearly two years of field data surveys and data processing within the industry, fully completed Shiping Chuan Molybdenum Mine, Yamaguchi pyrophyllite mining and other two important minerals mining 5 survey of the use of mineral resources of the county to identify the amount of 6,641,800 tons of ore to maintain Molybdenum tube metal of 15,662.92 tons; lead-zinc ore volume 431,700 tons, the amount of 16,283 tons of metal; fluorite ore 267,300 tons; pyrophyllite ore 1538.54 tons of mineral resources and fruitful. . Among them, pyrophyllite is good Qingtian stone material industry of choice, around the molybdenum metal is an important raw material industries.  The county's two kinds of ore were estimated mine life of 30 years and 50 years, the economic output of nearly 50 billion yuan. County Land Bureau relevant responsible person said, the survey for Qingtian County reserves of mineral resources database updates, and further rational development and utilization of mineral resources provide detailed data for Qingtian County effectively improve the scientific management level land and resources, strengthen the capacity of land resources and support economic development provided strong support

Huatailong copper-molybdenum separation technological achievements through the identification

2010 China Nonferrous network - non-ferrous metal authoritative media platform Huatailong Tibet Mining Development Co., Ltd. completed Jiama copper polymetallic ore copper-molybdenum separation test key technologies industry its application projects in Lhasa by China gold Association organized scientific and technological achievements. China Nonferrous network. Identification of the view that the overall technology has reached the international advanced level in the high-altitude alpine ecologically fragile zones copper-molybdenum separation technology has reached the international advanced level of similar mines has a demonstration effect. China Nonferrous network.
Huatailong company started in 2012 copper-molybdenum plating separation test work, the establishment of scientific and technological research and development group, to overcome the cold and oxygen, mineral composition of the ore complex, six kinds of valuable elements in mutual interference, backwater need to recycle all of the plateau low pressure is not conducive to flotation, six kinds of valuable elements separation is difficult, inexperienced young research team, no experience to draw on all the difficulties, positive innovation, based on the number of tests, on April 26 this year, start a copper-molybdenum separation industrial test and industrial production. China Nonferrous network.
July 20, copper-Molybdenum tube separation of industrial production has made advanced technical indicators to achieve a grade standards, and solve the concentrate filtration and backwater fully utilized and other issues, marking the successful separation of copper and molybdenum. China Nonferrous network.
Technical appraisal committee of experts through on-site field trips, after listening to the project team thematic technical reports, access to relevant technical information, as well as questioning the respondent, after appraisal, the project's scientific and technological achievements made ​​to give a high evaluation. China Nonferrous network.
China Gold Association vice president, secretary Zhang Bingnan said copper-molybdenum separation of scientific and technological achievements, the other mines in the gold industry to promote the use, boosting the entire gold industry and the level of technology in Tibet has leapt to a new level, and for China's non-ferrous metals leading the development of the industry has made a contribution of

Historic low molybdenum time to get rid of winter yet

 SMM recent years, the domestic molybdenum prices have ups and downs, but the overall price trend concussion. China Nonferrous network. Since the 2008 global financial crisis, Molybdenum crucible  prices low DECADE. China Nonferrous network. As of the 16th, the domestic content of 45% molybdenum's latest offer is about 1400 yuan / ton level, when compared with the beginning dropped by about 10 percent, fell in August 2012 historic low levels, compared with 2005 high shrink about 80 %. China Nonferrous network.
According to the Shanghai Metals Market (SMM) research to understand, from mid-2012 onwards, Shaanxi, Henan, Liaoning and other companies have discontinued the main producing molybdenum insured, but the actual effect is very unsatisfactory and only in December 2012 to 2013 February, the market price due to supply reduction and steel procurement and rebound. China Nonferrous network.
At present, the Shaanxi region has ore mining scale enterprises can be molybdenum (content 45%) of production costs at 1500 yuan / ton degrees nearby, and some small businesses, low-grade ore, production costs at 1600 yuan / t degrees. China Nonferrous network. Below the cost line of the grim situation to make the industry initiative to stop the resurgence of the wind. China Nonferrous network.
Insiders believe that the leading precious metals price trends of the industry supply and demand pattern. China Nonferrous network. Prolonged downturn in the domestic steel industry in recent years, steel mills bidding prices down, as the charge of Molybdenum tube steel product prices spread to the upstream industry chain, also involving molybdenum prices continue downward. China Nonferrous network.
Looking ahead, molybdenum prices have fallen below the cost, but not to force the end demand, despite the supply reduction, but still difficult to translate into significant support price, it seems sluggish performance or molybdenum prices this winter will continue to

Heilongjiang fork molybdenum exploration total reserves of about 246.6775 ten thousand tons

Shanghai metal mesh recently learned that the Heilongjiang provincial key projects - Songling District fork molybdenum lead-zinc polymetallic ore exploration project obtained a new progress, submit Reserves the amount of 1.76 million tons of molybdenum plating, an average grade of 0.087% molybdenum, molybdenum metal content of 700,000 tons of low-grade, average grade of 0.048% molybdenum, molybdenum totaled approximately 246.6775 million tons; volume of 1 million tons of lead metal and zinc metal content of 140,000 t; silver metal content of 44 tons, became a world-class multi-metal deposit.Smooth implementation of the project, due to "geological survey team prospecting, private capital first, state-owned enterprises to follow up" prospecting advanced mechanism. According to the project feasibility study report, project design for the annual production capacity of 16.5 million tons of ore mining, at current prices, the annual output value of 4.1 billion yuan, tax 970 million yuan, 82.11 million yuan compensation for mineral resources; direct placement around 1,500 people, 3,000 indirect job placement, economic and social development on Daxinanling extremely important strategic significance. Currently, the project feasibility study report has been organized Heilongjiang Provincial Development and Reform Commission reviewed and approved assessment center project and report to the National Development and Reform Commission

The strength properties

Tungsten alloyed with molybdenum to improve the heat resistance strength. The incorporation of 25% ~ 30% W, the alloy to improve the working temperature of about 200 ℃. Mo-W alloy can only be produced in the form parts, but can not produce boards and wire. Mo-W alloy is slightly higher than the pure molybdenum recrystallization temperature. It has excellent resistance to molten zinc corrosion resistance, so its main application is in the zinc industry, for example for automatic molding machinery pump member, casting valve, siphon, and
Although rhenium scarce and expensive, but has a unique heating temperature, high plasticity overall performance, so that not only the application in the electronics industry, usually Mo-5Re and Mo-41Re do thermocouple wire and for structural materials in aerospace, Mo-50Re for high temperature structural materials.Mo in order to solve the problem of sagging generated under high temperatures, typically doped molybdenum K, Si, Al to improve its recrystallization temperature. Since processing of doping and produce intense overlapping unidirectional fibrous structure of the recrystallization temperature of pure molybdenum plating, up to about 1400 ℃ 1800 ℃. Even when using the recrystallization temperature ductility remained doped molybdenum creep rate at 1800 ℃ lower than that of pure molybdenum, about 1000 times, not only better than pure molybdenum TZM and processing but also rare earth elements, oxides of molybdenum alloys, so use it to produce parts even at high temperatures remain dimensionally stable.The strength properties, the doped molybdenum in high temperature conditions show a great deal of advantages. Although below 1000 ℃, TZM and the intensity is higher than pure molybdenum doped molybdenum. This shows that the higher the temperature, the more effective to enhance the bubble.

Because of the above-doped molybdenum superiority to produce some typical applications, such as automotive and motorcycle headlights in plastic supporting wire, tubes and furnace heating elements, sintering and annealing used boat and so on.

in some similar characteristics detection of metal

It belongs to the non-destructive testing, test method is relatively simple. W. Carbide hardness test specimen of its shape and size adaptability, test efficiency. . In addition, carbide hardness and other physical properties of materials, there is a certain relationship between the. For example, the carbide hardness test and tensile test are basically detect metal plastic deformation resistance capacity, which both tests are, in some similar characteristics detection of metal. . Therefore, the test results are compared with each other completely. Carbide tensile test equipment is huge, complex operation, to sample preparation, tungsten carbide inserts efficiency is low, for many metals, has a hardness test and tensile test conversion tables to be investigated. Therefore, the mechanical properties of carbide materials testing, people increasingly using hardness test, and less by tensile tests.
Tool
Carbide hardness is generally used scale Rockwell hardness HRA or Vickers hardness tester to detect, practical people mainly used in Rockwell hardness test Hardness HRA. PHR Series Portable Rockwell hardness tester is suitable for testing the hardness of cemented carbide. . This instrument weighs only 0.7kg, the accuracy and the same desktop Rockwell hardness. . Carbide measuring hardness, Star company's PHR Series Portable Rockwell Hardness Tester can test the thickness or diameter of less than 50mm carbide workpiece, you can test a small diameter to 2.0mm carbide workpiece diameter smaller than can be tested 30mm tubular carbide workpieces. You can also at the production site and sales site or materials warehouses.. The instrument used to test the carbide workpiece is simple, fast, non-destructive, can be finished or semi-finished products for the bulk of the work done by piece carbide hardness testing

ferrous metal authoritative media platform

ferrous metal authoritative media platform
News Guide: the hard refractory metal compounds and bonding metal by powder metallurgy process is made of an alloy material. Carbide with high hardness, wear resistance, strength and toughness, heat resistance, corrosion resistance and a series of excellent performance, especially its high hardness and wear resistance, even at 500 ℃ temperature also remained unchanged , at 1000 ℃ still very high hardness.A refractory hard metal compound and a bonding metal by powder metallurgy process made of an alloy material. Carbide with high hardness, wear resistance, strength and toughness, heat resistance, corrosion resistance and a series of excellent performance, especially its high hardness and wear resistance, even at 500 ℃ temperature also remained unchanged , at 1000 ℃ still very high hardness. Carbide is widely used as a tool material, such as turning, milling, planer, drill, boring knives for cutting cast iron, nonferrous metals, plastics, chemical fiber, graphite, glass, stone and ordinary steel can also be used to cut heat-resistant steel, stainless steel, high manganese steel, tool steel and other difficult to Molybdenum crucible materials. Carbide cutting tools are now new carbon steel equal number of times.
Carbide with high hardness, strength, wear resistance and corrosion resistance, known as the "industrial teeth", for the manufacture of cutting tools, cutting tools, drilling tools and wear parts, widely used in military, aerospace , machining, metallurgy, oil drilling, mining tools, electronic communications, construction and other fields, with the development of downstream industries, carbide market demand is increasing continuously. . And future high-tech weapons and equipment manufacturing, advanced scientific and technological progress as well as the rapid development of nuclear energy, will greatly improve the stability of high-tech and high-quality carbide products. According to the analysis, from the "2013-2017 China Cemented Carbide Industry Market Outlook and Investment Analysis Strategic Planning Report," 2015 production will reach our carbide 30,000 tons of industrial output value reached about 23 billion yuan.
Feature

China Nonferrous network, a small metal, scrap metal.

Big HUTANG tungsten ore exploration and development in North Jiangxi Tungsten Industry is a microcosm of the rise. , Small metal, scrap metal. According to the latest exploration results, northern Jiangxi Wuning County, Xiushui County and Jingdezhen Fuliang County is rich in tungsten and awaiting development
Following the 2010 discovery in northwestern wuning large HUTANG large tungsten mine after the beginning of this year, Jiangxi Bureau of Geology and again in northeastern Jiangxi Jingdezhen Fuliang County, Zhu Xi mine discovered a world-class large tungsten mine, has penetrated maximum thickness of 449 m ore, tungsten wire ore highest grade of 8%, with an average grade of 0.64% to 0.65%, equivalent to five times the industrial grade. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. Jiangxi Bureau of Geology and Mineral Resources Secretary Pengze Zhou said: "This time, Zhu Xi mine major discovery, prospecting breakthrough strategic action is an important achievement, it makes tungsten ore resources in Jiangxi Gannan formed in northeastern Jiangxi Province, northwestern three pillars of the new pattern, and further consolidation of tungsten ore resources in the world dominance., small metal, scrap metal. "
The world's proven reserves of tungsten ore are mainly distributed in China. Small metal, scrap metal. According to the U.S. Geological Society data, as of the end of 2012, the world's proven reserves of tungsten metal content reached 3.2 million tons, China accounted for 61%. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. China is the world's largest supplier of tungsten, tungsten supply China accounted for 80% of global demand. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. Chinese tungsten concentrate resources development in Jiangxi, Hunan, Henan and Guangxi provinces, including Jiangxi fine mineral country accounts for 46.45%, accounting for 25.78% of Hunan, Henan, accounting for 11.57%. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. The existing tungsten concentrate production in Jiangxi Province, eight in Ganzhou. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal.
With tungsten ore exploration in northern Jiangxi real progress, it will change the thriving southern Jiangxi Tungsten Industry pattern. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal.

Copper Lead Zinc Tin CNMN.COM.CN nickel

Latest data show that crept into the big HUTANG CMN tungsten mine. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. March 2011, Xiamen Rainbow through capital increase registered capital increased to 478 million yuan from the 97.16 million yuan. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. After the capital increase CMN HUTANG tungsten mine in the big accounting for nearly 6% indirect shareholding
As China's tungsten industry leading enterprises, CMN special status, its layout north of Jiangxi tungsten carbide plate has coarse shape. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal.
Statistics show that in 2003 in order to increase their investment CMN way to get a rare earth Jiangxi Tungsten Industry Group 51% stake in the Group has a wholly-owned medium-sized tungsten mine 8; through participation in integrated water resources in northern Jiangxi repair tungsten obtained Xianglushan ore 51% stake; 2007 CMN implemented in cooperation with Guangxi Guangxi Lu Chuan Prospecting System - Bobai tungsten molybdenum exploration projects. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. 2010, CMN has control of 51% stake in Hunan Nonferrous, the realization of Yaogangxian Shizhuyuan, Xintianling other large tungsten ore controlling, controlling more than 90% of the Hunan Province of tungsten ore resources. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. In the field of carbide, CMN Holdings Carbide plant in Nanchang, Hunan Nonferrous controlled by Zhuzhou Cemented Carbide and Zigong Cemented Carbide Carbide two China's largest enterprises. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. In addition, CMN also holds a 15.58% stake in Xiamen Tungsten, becoming its second largest shareholder. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal.
Analysts estimate that CMN tungsten reserves accounted for 30% or more. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal.

the market downturn has not improved.

Core Tip: This week Port chrome ore prices remain steady the main market is still lacking positive thus stimulating the downstream plant for chrome ore purchasing enthusiasm is not high; ferrochrome manufacturers offer little change in the overall individual Molybdenum plate offer slightly weaker , the market relatively flat; low carbon ferrochrome prices fell slightly, the market downturn has not improved.
       Port this week chrome ore prices remain steady-based, so the market is still lacking positive stimulus, the lack of ore price rise opportunities. Since there is still no signs of ferrochrome market for chrome ore factory purchasing enthusiasm is not high, demand is still to be improved. Currently ferrochrome market still no signs of recovery since September high chromium steel tender price is lower than market expectations, chrome ore market activity declined again, miners continue to stay on the sidelines in the short term to stabilize the main ore price run.
This week ferrochrome manufacturers offer little change in the overall individual manufacturers offer a slightly weaker market relatively flat. September mills ferrochrome tender price trend is clear, as the tender price, the tender were not increased compared with August, which makes the high-chromium manufacturers still lack confidence in the market outlook is expected to recent high prices still flat chrome
     Week low carbon ferrochrome prices fell slightly, due in September of high chromium steel tender unsatisfactory performance, low chromium manufacturers also had fears that the current market demand increases difficulties of low carbon ferrochrome market remained in the doldrums, the price run dominated by weak stabilization.
This week silicochromium prices remain stable, the spot last week to maintain the level of supply and demand, Sichuan silicochromium 72 manufacturers offer in 8000-8100 yuan / ton. Currently silicochromium significant fluctuations in market difficult, in September-October season in anticipation of stainless steel, ferrochrome prices of recent sharp weakening may be difficult, and the same is true of chrome silicon, silicon-chrome prices are still expected next week little changed.

Difficult to be optimistic about the market outlook , molybdenum prices rebounded difficult

Molybdenum target market : today's domestic molybdenum prices remained stable , low-grade molybdenum concentrate 30-38 % price 1330-1370 yuan / ton degrees ; conventional 40-45 % molybdenum mainstream price 1350-1390 yuan / metric ton , 45% molybdenum mainstream price 1370-1390 yuan / ton , high -grade 47% or more molybdenum mainstream price 1390-1410 yuan / ton degrees nearby. Due to the low asking price is difficult to pick up signs , business pessimism darker , and the operation will to a great impact on the trend of late with molybdenum mixed views . However , the overall attitude of the more negative , the latter eagerly awaited boost.
Ferro molybdenum market : Current 60 molybdenum mainstream prices remained at 9.5-9.6 yuan / ton near mainstream acceptance 9.7-9.8 yuan / ton , steel mills for 60 tender acceptance molybdenum price 9.5-9.6 yuan / ton or so. External offer some manufacturers also not a major adjustment . Although the market is poor, but difficult to achieve low volume improved. No significant change in the market inquiry , some manufacturers take a small amount of goods based. Outer disk has not been conducive to the good news came , the venue businesses continue to stay on the sidelines .
July 24 LME molybdenum futures quotations March period and the 15 -month return to the original low level, in March of molybdenum offer 20,000 ( up 1,000 ) / 21,000 ( up 1,000 ) dollars / ton ; 15 -month molybdenum Quote 20700 ( up 995 ) / 21700 ( up 995 ) dollars / ton , LME molybdenum positions of 216 hands. Today newsletter : steady growth policy Wave: Railway Construction trade tripartite benefit small and micro enterprises ; China July HSBC PMI fell to 47.7 preview value , the highest 11-month low ; Eurozone July PMI initial two-year high .
The external market : the same as with the previous , Western molybdenum market prices still continued downward trend , product prices continue downward adjustments. Macroeconomic more sluggish , sluggish demand difficult to alleviate the situation , the price is hard to be supported , businesses serious pressure . U.S. molybdenum prices relatively stable, but the overall trend is stable and weak to run . External sharply lower molybdenum market conditions , on the Chinese market have an important indirect effects .
Internal market : current external market molybdenum prices in recent years appears low, a larger range of products fell , which caused widespread concern in domestic businesses . Depending on the external reports, with the domestic and international market price of great contrast , some manufacturers and traders to reduce production costs , raw materials imported from abroad molybdenum . In addition , there are also some traders imported for resale through trade. Expected future China market increased demand for external products , or will the external market conditions play a supporting role. Molybdenum no significant improvement in the domestic market are signs , some products still continued to fall , businesses expected worse , we expect short-term molybdenum prices continue downward or remained bottomed channels.

Molybdenum weak market stability maintenance , the actual trading two empty

Molybdenum market : current molybdenum prices temporarily remain stable, although some mining companies offer temporary change, but the actual turnover of serious pressure . Today, 30-38 % of low-grade molybdenum concentrate prices in 1350-1400 yuan / ton degrees ; conventional 40-45 % molybdenum mainstream price 1390-1420 yuan / ton degree ; 45% molybdenum plating price 1400-1420 yuan / t degrees around 47% and more high-grade molybdenum mainstream price 1420-1450 yuan / ton degrees nearby. In addition to cash and low-priced part of the business in a timely manner to take the goods , the more businesses will wait and see high .
Ferro molybdenum market : Recently molybdenum prices 9.7-9.8 yuan / ton , the market mainstream acceptance 9.9-10 yuan / ton nearby. A merchant , said the market although some manufacturers offer relatively high, but to ease the pressure on the operation , so that the transaction price when there is a certain space , so the actual market levels are relatively low. Steel prices continue to plumb the tender , the tender recently Zhangjiagang Pohang 120 tons of semi- acceptance price 95,500 yuan / ton , some manufacturers are reluctant to supply because the price is too low . Lack of market outlook has stabilized signal , businesses are expected to be pessimistic.
July 10 LME molybdenum futures quotations temporarily remained stable in March of molybdenum offer 21,000 / $ 22,000 / ton ; 15 -month molybdenum Quote 21730 / $ 22,730 / ton , LME molybdenum positions of 216 hands. Today newsletter : July First Thursday accusing him of a strong rebound in lending , increase nearly 170 billion ; half of total imports and exports grew by 8.6% ; Bernanke : Even though the unemployment rate fell to 6.5% would not rush to raise interest rates.
The external market : The current Western European markets molybdenum products prices continue to decline early , although prices have been at a low level , but in the market inquiry and transaction scarce pressure, coupled with the summer season is at , businesses cargo hold pressure. An external businessmen said that if the latter inquiry condition does not improve , do not rule out the possibility of product prices fall further . U.S. market remains relatively calm state , no price fluctuations , the overall market trend better than the European market.
Internal Market : Recently, molybdenum and other primary market prices seem to have signs of stabilizing , although a small number of low-cost transactions venue signs , and the overall atmosphere watching the relatively darker. Early part of the mining companies have ceased production and other conditions, in order to consume the existing inventory-based businesses . Steel prices continued downward bidding , molybdenum factory shipments increased difficulty . Other molybdenum products low levels. Short term is difficult to appear favorable factors supporting the market, so the molybdenum market prices are still continuing slight fluctuations. We expect short-term molybdenum market is still hard to pick up , businesses or continue to maintain the sidelines.

Businesses offer strong, late molybdenum market is expected to better

  Molybdenum market: As the stock market is relatively less than normal molybdenum raw materials, downstream manufacturers purchasing more difficult, and the transaction price level has increased from the previous month, some mining companies have slightly increased signs of external offer. 30-38% of low-grade molybdenum concentrate prices in 1350-1400 yuan / ton degrees; conventional 40-45% molybdenum mainstream price 1390-1420 yuan / ton level, 45% molybdenum 1400-1430 yuan / ton degrees , part of the business transaction price 1410-1420 yuan / ton degrees nearby; 47% and more high-grade molybdenum mainstream price 1420-1440 yuan / ton degrees. Demand outlook if timely commenced, molybdenum market is expected to pick up speed.
Ferro Molybdenum target market: Steel City market appears favorable, and the raw material prices firm, molybdenum manufacturers increased production costs, resulting in the recent 60 molybdenum offer improved. Farm cash offer multi maintained at 9.7-9.8 yuan / ton near mainstream acceptance 10-10.1 yuan / ton range. Zhangjiagang Pohang, Guangzhou Lianzhong, TISCO and other mills have recently admitted the tender, the tender quantity is acceptable, but many suppliers offer high psychological price seen very strong support for greater efforts on the market outlook.
August 20 LME molybdenum futures offer the overall trend remained stable, in March of molybdenum offer 19,600 / $ 20,600 / ton; 15-month molybdenum Quote 20320 / $ 21,320 / ton, LME molybdenum positions of 204 hands. Today newsletter: secondary industry investment growth fell to a 10-year low; July decreased 24.474 billion yuan foreign exchange, for two consecutive months reduced; construction output in the euro area in the second quarter increased 1.0 percent, the largest increase in more than two years.

expected short-term molybdenum market or still relatively strong.

  Molybdenum Market: Some manufacturers tentative to raise prices, timely approach intermediate traders to cover short positions. Market stalemate situation slightly thick, low-cost procurement of raw materials difficult, to stabilize the main molybdenum deep processing market still no significant improvement in the relative concentration of the tender mills, such as increased demand outlook, expected short-term Molybdenum tube market or still relatively strong.
   Ferro molybdenum market: Steel City market appears favorable, and the raw material prices firm, molybdenum manufacturers increased production costs, resulting in the recent 60 molybdenum offer improved. Farm cash offer multi maintained at 9.7-9.8 yuan / ton near mainstream acceptance 10-10.1 yuan / ton range. Zhangjiagang Pohang, Guangzhou Lianzhong, TISCO and other mills have recently admitted the tender, the tender quantity is acceptable, but many suppliers offer high psychological price seen very strong support for greater efforts on the market outlook.

Inside and outside the molybdenum price Qi Zhang, market or continue to pick up

 molybdenum plating market: the market transactions and businesses not under the influence of low-cost, today's domestic molybdenum product prices rise situation. 30-38% of low-grade molybdenum current price 1360-1410 yuan / ton degrees; conventional 40-45% molybdenum prices in the mainstream 1400-1430 yuan / ton level, 45% molybdenum 1410-1430 yuan / ton degree; 47% and more high-grade molybdenum mainstream price 1430-1450 yuan / ton degrees. LUANCHUAN a merchant, said the recent low spot hard floor mining, many regions have a relatively high level of turnover of the phenomenon, the late General grade molybdenum concentrate prices or gradually become 1500 yuan / ton degree operation.Ferro Molybdenum Market: Farm cash offer multi maintained at 9.7-9.8 yuan / ton nearby, but more small and medium sized manufacturers will offer molybdenum remained at 98,000 yuan / ton level, mainstream acceptance price 10-10.2 ten thousand yuan / ton range, large manufacturers deliberately boosted the market trend, the external offer above market level. The relative concentration of the end mill tender, tentative molybdenum manufacturers to raise prices, or afternoon rally expected to continue. Although the short term is difficult to a large extent inside volume improved and low turnover phenomenon is reduced, some businesses bulk transaction price is higher

Molybdenum Market Quotes Comment

The external market: according to the external display quotes, recently, Western Europe, the United States and other Molybdenum crucible market prices are slight signs of recovery, molybdenum oxide, molybdenum oxide and other products have a certain price increases. According to external businesses, said an increase in demand due venue, driving prices up. However, investors are still difficult to judge the trend of late, we can expect that there will be no short-term price or downside. In addition, the molybdenum price increases in part to lag behind molybdenum products.
Internal Market: The current domestic market was slightly weaker molybdenum, transaction status no significant change. But business is still very strong psychological price. Failed to release the entire market demand, although some manufacturers offer of foreign higher, while the actual turnover is difficult, and the overall number of transactions is poor. Molybdenum miner relative shortage of supply, the price rise trend is still strong; molybdenum quote steadily rising steel trick to boost confidence in the business outlook; molybdenum deep processing factories increased production costs, while the terminal needs calm, so the operating pressure is relatively increased. Saddle Ridge is expected in the short term molybdenum prices will show a slight concussion trend.

molybdenum discovery process

Under natural conditions, there is no metal form molybdenum , and mainly in the form of molybdenite distributed in nature, the average crustal abundance of 1.3 mg / kg. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. 18th-century Greeks called galena molyldena, they substantially the same shape and density of molybdenite mistaken for galena . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. 1778 , Swedish scientist Carl William Scherer (Carl Wilhelm Scheele) molybdenite with nitric acid decomposition obtained when molybdic acid , and obtained molybdenum salt , the same year made ​​out of molybdenum , confirming the presence of molybdenum plating , and the Greeks borrowed misunderstanding will be named molybdos. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. 1782 , Scherrer compatriot Peter Jacob Hjelm (Peter Jacob Hjelm) tune with linseed oil mixture over molybdate confined burning charcoal and successfully restore this oxide to obtain a ferrous metal powder , metal powder and said this is " Mo ", molybdenum. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. In 1893, the German chemist M. Moissan electric furnace heating a mixture of carbon and two molybdenum oxide , molybdenum content obtained in 92% to 96 % of the cast metal molybdenum . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. Early 20th century , do not尔齐利乌斯reduction with hydrogen trioxide has been more pure molybdenum . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal.

scrap metal. Reveals the molybdenum in the lubrication

Abstract: The detailed account of the discovery process elements molybdenum and sandblasted tungsten target history of the development of industrial applications . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. According to the physical and chemical properties of molybdenum , molybdenum elaborated in the steel industry, petroleum chemical industry, non-ferrous metals industry in the traditional applications, providing pure molybdenum , molybdenum -based composite materials, the main purpose. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. Reveals the molybdenum in the lubrication , the body , the organism , agriculture, medicine irreplaceable special role . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. Finally, the study of molybdenum as functional materials in displays, solar cells , sensors, light-emitting materials such as molybdenum and military role of emerging application areas . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal.
Molybdenum is a rare metal , is an important strategic non-renewable resource , is the development of high technology, modernize the country, an important foundation for building a modern national defense materials . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. With the continuous development of science and technology , with its unique properties of molybdenum is widely used in iron and steel industry , non-ferrous metals industry, nuclear industry , aerospace industry, chemical industry, electronic industry and other fields, while molybdenum various uses are constantly emerging being excavated to make the magic of molybdenum metal is more gorgeous scene . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. I, as an engaged and molybdenum materials researchers are increasingly feeling the importance of molybdenum , is irreplaceable, this paper molybdenum discovery process , history, performance, application and other aspects of a more comprehensive discussion, let the reader a clearer understanding of the potential of this unique charm and metal . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. 

many choose to watch the market

August 21 tungsten price 132,500 yuan / ton, the price index was 129.9 (2012-8-20,102000 yuan / ton), representing the lowest point of 100 cycles (2012-8-20) raised 29.9. Tungsten end demand for a long time has not been effectively improved, Minmetals month procurement plan has not been announced, businesses increasingly worried about the market, many choose to watch the market, at least temporarily operate or not operate.

Tungsten eletrode Market procurement needs too, thinly traded. According to sources, Minmetals last weekend asking the next miner inventory, consulted the next single, but in the meantime and not out of the acquisition plan, the latter will continue purchasing and storage is not clear. According to research, at present more than 60 degrees wool wolframite ore price 1.78 yuan / kWh nearby and procurement needs less; business confidence, traders are afraid to purchase tungsten, fearing heart harder shots. And due to lack of demand and financial pressure, cash transactions of small quantities of tungsten, the price even lower than the gross price is also mine. According to the analysis is expected this week, Minmetals if not taken any purchasing and storage plan, or tungsten concentrate prices this week due to lack of demand for support and fell again

August 23 was 129.9 concentrates index TCPI

August 23 tungsten carbide inserts price 132,500 yuan / ton, the price index was 129.9 (2012-8-20,102000 yuan / ton), representing the lowest point of 100 cycles (2012-8-20) raised 29.9. Our tungsten ore market turnover is expected next week will be difficult to have a big breakthrough in the overall market or continue steady weak.
     Note: Cycle refers 2012-8-20 date, tungsten Index (Tungsten concentrate price index, TCPI) is the date 2012-8-20 price comparison with mainstream price formation relative number.
        This week tungsten prices, demand continues to slump, business confidence. High production costs, demand remains in the doldrums, tungsten ore businesses survive in the cracks, abnormal operation carefully, the whole tungsten ore market is almost "priceless free city." Business mentality slightly differences, mainly in two ways.
         The late part of the business that tungsten ore prices will remain high for two main reasons: a tungsten high production costs, which is the most significant reason, two tungsten itself rare attributes, three tungsten importance of the application of national policies or even more focus on tungsten.
        Another part of the business that concentrates market continues down this is normal, if there is no demand for support, the latter may continue to fall until the market really go along with a reasonable price. Main reasons: First up is not the shortage of raw materials led so far this year are adequate overall inventory tungsten ore; two prices is not demand-driven, no actual downstream demand, the price of tungsten lack of support; three at home and abroad this year, the overall economic environment is not very good, to some extent restricted the tungsten demand; four bank loans difficult, costs increase; Fifth, some time ago, the actual purchase of tungsten ore is mainly Minmetals purchasing and storage. August 21 was 129.9 concentrates index TCPI