Molybdenum carbide has a high melting point and hardness, good thermal stability and mechanical stability, and excellent corrosion resistance and other characteristics. Molybdenum is a silvery white refractory metal, a melting point of 2615 ℃, density of 10.2 g / cm 3, the expansion coefficient is small, a special tube is almost the same coefficient of expansion of the glass. Molybdenum stable at room temperature is higher than 600 ℃, rapidly oxidized.
2013年7月25日星期四
Quartz infrared lamp structure and characteristics of
Quartz infrared lamp is capable of emitting infrared spectrum 0.75 ~ 3μm, size, power range of different tubular lamps. It usually consists of a tubular quartz glass tube, internal helical filament composition. Filament to the annular ring support bracket, and with the glass wall separated to prevent the filament in the working state of the high temperature caused damage to the wall. Both ends of the quartz tube in the flame burning melting state clamp flat sealed tube filled with inert gas such as argon to protect the filament at high temperature is not oxidized. Sealing bits Molybdenum crucible filament is connected to the external electrodes. Commonly used form of a square ceramic head lamp, metal flake lamp, small ceramic cylindrical lamp and other forms. Part of the outer wall of the lamp can be sprayed ceramic directional infrared energy reflected reflective coating to further improve the heating efficiency of the lamp.
Infrared lamp to achieve 0.75 ~ 3μm infrared spectrum, the filament temperature is usually needed to reach above 2000 ℃. Therefore, in addition to the tube filled with inert gas to protect the filament will not be oxidized under high temperature, the need to fill the amount of halogen cycle gas. Halogen cycle gas at a high temperature of the filament can be evaporated out of the tungsten atoms, while in terms of the filaments has been combined with the hot tungsten filament atoms released back to further prolong the life of the filament.
Infrared lamp is radiated (Radiation) manner the energy directly to the object to be heated, so the heating fast, high thermal efficiency, and does not have any polluting substances produced, is a very clean and environmentally friendly way of heating. And because the thermal inertia of the filament is very small, it can be very easy to achieve fast and accurate temperature control.
It is understood that sharp Bronte Lighting Co., Ltd (CREATOR UV & IR LIGHTING CO.LTD.) Is a very professional manufacturer of specialty lighting products, and its products include quartz infrared lamp, quartz UV lamp, UV sterilizers, electronic ballasts and many other varieties. The production of quartz infrared lamp variety specification is complete, and the lamp, long life, excellent quality.
These infrared lamp can be widely applied to food heating, PET bottle blowing, footwear (glue curing), printing, electronic industry (such as wave soldering machines), the semiconductor industry, indoor and outdoor heating, car paint, powder coating, color coated board production line and many other fields, and have had a very good application effect.
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