Coupling Analysis of Casting Speed and Tundish Superheat and Controlling Secondary Cooling in Continuous Casting

A three-dimensional solidification heat transfer model has been developed to analyze the influence of casting speed and tundish superheat on solidification in continuous casting process. The virtual casting speed and tundish superheat are introduced as feed-forward control variables to determine the secondary cooling water distribution. The simulation results show that this analysis method can eliminate the temperature 'peak' caused by the suddenly changing of speed and temperature. A two-element dynamic cooling water distribution control model based on casting speed and temperature signal of tundish is presented. The application results show that the control strategy is effectual for improving the internal quality of casting billet.