Heat Transfer and Inclusion Behavior in Continuous Casting Tundishes

Abstract

AbstractIn this study, a mathematical model describing the three‐dimensional turbulent flow, heat transfer and inclusion behavior in continuous casting tundishes was developed. Numerical calculations were performed to study the characteristics of flow, heat transfer and inclusion behavior in a one‐strand tundish with/without flow control. The results show that it is necessary to employ flow control devices in order to improve the effectiveness of removal of nonmetallic inclusions in the tundish. Without flow control, the hot melt ascends and cooled melt descends and then recirculates back to the inlet along the bottom of the tundish. However, the phenomenon of temperature stratification occurs after the steel flow passes through the dam in the tundish. Inclusions with diameter greater than 30 m̈m can be removed in the tundish, and reasonable flow control devices will assist the removal of inclusions of size 20‐25 m̈m.