Methods of adding reactive metals to steels being...

B - Operations – Transporting – 22 – D

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22/167, 53/95

B22D 11/10 (2006.01)

Patent

CA 1202465

ABSTRACT A method for adding reactive metals to steel being continuously cast to eliminate the problem of tundish nozzle plugging is provided by the steps of continuously casting molten steel through a tundish nozzle while introducing a reactive metal into the molten steel in a form and at a point either above or below the tundish nozzle such that high melting oxides and/or oxysulfides of the reactive metal are not formed in an amount sufficient to cause plugging in the nozzle before passing through the nozzle. Alternately a flux can be introduced with the alloy or subsequent to the alloy addition that can lower the melting point of the reactive products below the temperature of the steel going through the tundish nozzle.

431203

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