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

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

C - Chemistry, Metallurgy

21

C

C21C 7/06 (2006.01) C21C 7/10 (2006.01) C22C 38/04 (2006.01)

Patent

CA 2160621

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] x [%S] about 2 x 10-5. Thereafter, degassing is performed on the molten steel.

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