ALLOY STEEL PRODUCING METHOD Russian patent published in 2008 - IPC C21C5/28 

Abstract RU 2323261 C2

FIELD: steel metallurgy, namely processes for melting converter chrome-containing alloy steel.

SUBSTANCE: method comprises steps of adding to steel melt ferromolybdenum and nickel after intermediate slagging off; draining metal from converter to ladle while successively adding to ladle aluminum, part of ferrochrome, ferrosilicon, silico-manganese and second part of ferrochrome; dividing charge of ferrochrome by said parts at relation (0.9 - 1.1): (0.9 - 1.1); heating ferroalloys in furnace till temperature of their upper layers no less than 700°C; providing relation of temperature of lower layers of ferroalloys to temperature of their upper layers no less than 0.25.

EFFECT: less loss of yield of high-quality steel, lowered expenses for producing steel.

4 cl, 1 ex

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RU 2 323 261 C2

Authors

Sarychev Boris Aleksandrovich

Sarychev Aleksandr Fedorovich

Nikolaev Oleg Anatol'Evich

Chigasov Dmitrij Nikolaevich

Kebenko Evgenij Valer'Evich

Antipanov Vadim Grigor'Evich

Meshcherov Sergej Viktorovich

Dates

2008-04-27Published

2006-05-17Filed