extrusion glass lubricant lubrication.

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 Molybdenum tube 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 temperature 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.
Mainly in the processing of molybdenum tubing pipe sintered ingots as extrusion ingots or billets, using temperature processing technology, by rolling, drawing or spinning into various pipe. China used to produce small diameter warm rolling molybdenum tube. Blooming temperature is generally about 650 ℃, the final rolling temperature is about 350 ℃. Warm rolling pass processing rate is generally 20 to 35%, up to 40%. For a diameter of 8 mm, wall thickness of 0.5 mm molybdenum tube, the tube can be rolled up to 6500 mm. Have a good warm-rolled molybdenum tube inner and outer surfaces, good room temperature ductility and further pulled into the capillary. Large diameter thin-walled tube for general use extruded or sintered tube and then by spinning processing.