Crucible processing technology: crucible from craft is divided into: sintering crucible and forging crucible, sintering crucible namely once sintering (cauldrons, the advantage is low processing cost, can be processed to size, defect is density is small, the forging crucible namely with forging of tungsten rod or molybdenum rods classics is machined and become the crucible, the advantage is big density, high control precision, defect is material loss is big, the cost is high, can be processed to smaller range. Sintering crucible machinable size is: 50 - phi 400mm diameter and wall thickness, the height of no more than 2mm above 500mm, forging crucible machinable dimension as 10mm diameter: - 150mm, wall thickness 0. 5 mm above, no more than 200mm height