Method for providing steel with lowered hydrogen level after ladle treatment
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United States of America Patent
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Apr 21, 1992
Grant Date -
N/A
app pub date -
May 2, 1991
filing date -
May 2, 1991
priority date (Note) -
Expired
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Abstract
A method is provided for obtaining steel with lowered hydrogen levels after ladle treatment. The method includes covering molten steel in the ladle with a particulate mixture consisting essentially of calcium aluminate and dolomitic limestone. The mixture is used in amounts of about 5 to 25 pounds per net ton of molten steel. Using the method of this invention, some steels to be cast without vacuum degassing to reduce the hydrogen level.
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