Abstract
The effect of process parameters of secondary cooling and electromagnetic stirring (EMS) on internal quality for CC billet is investigated. With these studies, the continuous casting process is optimized, and the internal quality of square/round billet is improved as well. Comprehensive technologies for internal quality control of square/round billet in Panzhihua Steel have been proposed. The results of industrial tests show that the comprehensive rate below level 1.0 of internal defects of center porosity, center segregation and center cracks is more than 97%, and carbon segregation index is in the range of 0.93~1.09. The quality of square/round billet can meet the requirement of consumers absolutely.
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