Method of producing molten aluminum-killed steel for thin steel

Details Method of producing molten aluminum-killed steel for thin steel Method of producing molten aluminum-killed steel for thin steel

1995-10-11

1997-04-01

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

With measuring, testing, or sensing

C21C 7076

Patent

active

056161883

ABSTRACT:
In a method of producing a molten aluminum-killed steel for forming a thin steel sheet, molten steel tapped from a converter is decarburized to a predetermined carbon concentration by using a vacuum degasser, and Al is added to the molten steel in the vacuum degasser to deoxidize the molten steel. A material containing metallic Ca is then added to the molten steel to produce a Ca content of about 0.0005 to 0.005 wt %, and to satisfy [%Ca].times.[%S].ltoreq. about 2.times.1 0.sup.-5. Thereafter, degassing is performed on the molten steel.

REFERENCES:
patent: 4043798 (1977-08-01), Nashiwa et al.

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