Explanation
Metallurgical process under the condition of less than 0.1MPa to ultravacuum, including refining, smelting, remelting, refining, forming and heat treatment of metals and alloy. vacuum metallurgy can reduce the pollution of metal by gas phase; Easily degassing or removing volatile impurity elements (such as lead, zinc, etc.); Promote chemical reactions that generate gaseous products; In some cases, pollution caused by refractory can also be avoided. It mainly includes vacuum resistance melting, vacuum induction melting, vacuum refining, vacuum arc remelting, electron beam melting and electric slag remelting.
Classification
No classification at present.