The development of high-end manufacturing industry has put forward higher requirements for the temperature resistance, thermal shock resistance, structural stability and service life of tungsten crucibles. 

Vacuum heat treatment is a process of heating and cooling metals or alloys under high vacuum or protective atmosphere, and is often used to improve the mechanical properties, dimensional stability and surface quality of materials.

The manufacturing process of tungsten crucible is complex and the technical requirements are high, mainly including powder preparation, pressing molding, high-temperature sintering and mechanical processing.

In the field of modern high-end manufacturing, superalloys are widely used in aerospace, gas turbines, nuclear industry and high-temperature chemical industries due to their excellent high-temperature strength, oxidation resistance and corrosion resistance.