METHOD OF PRODUCING ALLOY INGOT Russian patent published in 2013 - IPC C22B9/20 C22B9/22 

FIELD: metallurgy.

SUBSTANCE: proposed method comprises: feeding initial alloy into cold crucible of induction furnace, forming initial alloy melt bed by induction heating in atmosphere of inert gas, continuation of induction heating and addition of the first refining agent to melt bed. Then content of at least phosphorus on impurities present in the melt bed is decreased and making the alloy ingot by hardening of the melt with decreased amount of phosphorus. Said first refining element represents the mix of metal calcium and flux containing calcium fluoride and at least one component of calcium chloride and oxide. Weight fraction of total amount of calcium chloride and oxide relative to calcium fluoride can vary from 5 wt % to 30 wt % while that of metal calcium relative to melt bed can make 0.4 wt % and higher. Alloy ingot can be produced at electron-beam furnace with cold hearth.

EFFECT: high-purity allow.

13 cl, 7 tbl, 9 dwg