Method of making ultra low-carbon steel

Details Method of making ultra low-carbon steel Method of making ultra low-carbon steel

1997-01-17

1999-03-09

Ip, Sikyin

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

148625, 164 551, 164 561, 164 571, 164 581, C22C 3800, C21D 900

Patent

active

058794794

ABSTRACT:
Adding aluminum and/or silica to molten steel after decarburization containing about 0.005 percent by weight or less of carbon and about 1.0 percent by weight or less of manganese to form a mildly deoxidized molten steel; adding titanium to the mildly deoxidized molten steel to continue deoxidation so that the molten steel contains about 0.005 percent by weight or less of aluminum, about 0.20 percent by weight or less of silicon and about 0.01 to 0.10 percent by weight of titanium, to form inclusions in the molten steel which essentially consist of a complex oxide of titanium and aluminum, a complex oxide of titanium and silicon, and/or a complex oxide of titanium, aluminum and silicon.

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