VACUUM INDUCTION MELTING FURNACE

PRODUCTION TECHNOLOGY

Vacuum induction melting furnaces melt pure metals and alloys which cannot be melted in air because of their affinity for oxygen and nitrogen. Melting is done in ceramic, graphite or clay-graphite crucibles depending on the material. Sometimes, aluminum nitride or silicon carbide may also be used. The metal is heated using medium frequency induction, which has two important advantages: a reduction in reactions between the melt and crucible, and a good homogenization of the melt. Induction melting technology is also used to refine metals and alloys (degassing, slag removal).
 
The metals which are processed have a melting point of up to 1,800°C. We have different crucible volumes available in a total of six plants which can take batches from 10 kg to 2,000 kg. Typical materials include vanadium aluminum, nickel lanthanum, cobalt aluminum, cobalt aluminum titanium, nickel chromium aluminum, manganese vanadium titanium zirconium and nickel aluminum. Vacuum induction melting makes it possible to heat and cast metals in vacuum or under inert gas.