Deoxidation of Continuously-Cast Low-Carbon Steel for Cold-Sheet

Abstract

In order to develop continuouslydassy-cast steels for cold rolled sheet, the deoxidation of liquid steel has beenstudied.
Deoxidizers of the series of Al-Si-Mn can be basically used satisfactorily for the purpose. Especiallythe cold rolled steel sheet of the composition of C=0.03-0.07%, Si=0.03-0.07%, Mn=0-40-0.50%, andacid sol-A1≤0.008% is good enough for the view point of mechanical properties; its surface defects aresufficiently few. Moreover, non-metallic inclusions decrease by the addition of complex deoxidizers asa part of deoxidizers.
The composition of deoxidation product is studied from the view point of chemical equilibrium.