to prevent the workpiece or fragments flying out.

Cast for crushing coarse grain, improve ingot processing performance, can also be used to produce tubes, rods and profiles. In order to fully cast grain crushing, extrusion ratio should not be less than 4, the extrusion temperature is usually between 1100 ~ 1315 ℃. If it is directly obtained by extrusion products and intermediate products shall adopt greater extrusion ratio and higher extrusion temperature. To extend the die life and the dimensions and surface quality assurance products should be used or a zirconia refractory aluminum oxide coating die, extrusion glass lubricant lubrication.
Forging
Including swaging and general forging. Mainly for the production of swaged over 2.5 mm diameter rods and pull the wire drawing of the blank material, the use of the blank 10 to 30 mm square sintered article. Pure molybdenum swaged forging temperature often open about 1400 ℃, pass deformation is generally 10 to 20%, also up 30%. As the diameter decreases, the temperature gradually decreased forging 3 mm diameter can be reduced to about 800 ℃. For ordinary forging, the forging press forging is more desirable than. General availability of large forging billet and large forgings. Pure molybdenum open forging temperature of about 1400 ℃, while the extruded billet billet open open forging temperature can be lower. Free forging pay attention to safety, to prevent the workpiece or fragments flying out.
Rolling
For sheet, strip, foil and bar production. Rolling smelting - extruding the billet to provide the initial rolling temperature is generally between 1200 ~ 1250 ℃; powder blank provided the initial rolling temperature is generally at about 1400 ℃. To reduce the non-uniform deformation, the roughing pass deformation should be 20 to 40%, and the total rolling time after heating deformation of about 75%. When the amount exceeds 85% of total deformation (thickness of about 6 mm), the rolling tungsten carbide inserts can be reduced to 700 ~ 900 ℃; thickness of 1 to 2 mm, the rolling temperature can be reduced to 200 ~ 400 ℃. The plastic based material - brittle transition temperature type, the transition to the cold rolling sheet thickness of 0.5 to 1 mm. Cross-rolled products can be used to improve the anisotropy. Hardening to obtain sufficient plasticity and improve the low temperature, the appropriate amount of cold working the end product should be 70% or so.