METHOD OF MAKING STEEL FOR METAL CORD Russian patent published in 2005 - IPC

FIELD: metallurgy; production of metal cords.

SUBSTANCE: proposed method includes melting of iron-carbon melt containing at least 0.20 mass-% of carbon in steel-melting unit, tapping non-deoxidized metal into teeming ladle with main lining and porous plug for blowing with argon, preliminary deoxidation of melt by carbon-containing materials and ferroalloys at tapping into teeming ladle, addition of slag-forming mass into ladle, vacuum carbon deoxidation in ladle to steel quality level, final correction of steel by chemical composition and temperature at "furnace-ladle" set and continuous teeming. Preliminary deoxidation of melt is performed by means of carbon-containing material at content of carbon no less than 99% and ferromanganese at content of manganese above 70% and that of silicon below 6%; after vacuum carbon deoxidation, silicon-containing ferroalloys are added.

EFFECT: enhanced purity of steel by non-metallic inclusions, especially by alumo-silicates and calcium alumo-silicate at content of aluminum oxide above 50%.

2 tbl, 1 ex