METHOD OF OBTAINING INGOTS OF INITIAL ALLOY FOR PRODUCTION OF AMORPHOUS BANDS Russian patent published in 2005 - IPC

FIELD: metallurgy; production of alloy on base of cobalt and iron in vacuum induction furnace for production of amorphous bands by flow-turning method with the aid of quartz crucibles.

SUBSTANCE: proposed method includes melting of main charge, introduction of alloying elements, complete melting, cooling to pouring temperature and pouring to ingot mold from above. Main charge contains waste amorphous band of the same composition in the amount of 5-80 wt-% of mass of charge at bulk mass equal to 18-20% of density of initial alloy. Proposed method makes it possible to reduce amount of nonmetallic inclusions in ingots, to avoid choking of calibrated nozzle and to reduce action of melt on quartz crucible. Yield of good amorphous bands is increased from 52.6% to 79.3-87% and consumption of quartz crucibles is reduced by 50%.

EFFECT: enhanced efficiency.

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