METHOD FOR MAKING HIGH QUALITY STEEL

FIELD: metallurgy, namely out-of-furnace treatment of metal. SUBSTANCE: method comprises steps of introducing aluminium and powder calcium-silicon wire in ladle filled with metal at vacuumizing and achieving oxygen activity in range 0.0010-0.0015%. Aluminium wire is introduced at rate 2.0-4.0 m/s; c...

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Main Authors KOMRATOV JU.S, PILIPENKO V.F, ISUPOV JU.D, FETISOV A.A, CHERNUSHEVICH A.V, KUZOVKOV A.JA, POLUSHIN A.A, IL'IN V.I, VINOGRADOV S.V
Format Patent
LanguageEnglish
Published 20.10.1999
Edition6
Subjects
CHEMISTRY
METALLURGY
METALLURGY OF IRON
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL
TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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Summary:FIELD: metallurgy, namely out-of-furnace treatment of metal. SUBSTANCE: method comprises steps of introducing aluminium and powder calcium-silicon wire in ladle filled with metal at vacuumizing and achieving oxygen activity in range 0.0010-0.0015%. Aluminium wire is introduced at rate 2.0-4.0 m/s; consumption of aluminium wire is equal to 0.07-0.17 kg/ton of steel. Powder calcium-silicon wire is introduced at rate 3.5-4.0 m/s; its consumption is equal to 1.2-2.0 kg/ton of steel. Vacuumizing of metal is terminated at once after introducing necessary amount of wire. EFFECT: enhanced quality of vacuumized metal, its ameliorated structure. 2 tbl, 1 exp
Bibliography:Application Number: RU19980110620