Numerical Simulation of Fluid Flow and Initial Solidification in Slab Continuous Casting Mold with FC Mold G3

Abstract

With the increasing demand for high-quality continuous casting slab, electromagnetic devices are widely used to control the flow field in the mold. The new generation electromagnetic device FC Mold G3 with the combined function of electromagnetic braking (EMBr) and electromagnetic stirring (EMS) has received extensive attention. Herein, a 3D multiphysics numerical model coupling the electromagnetic, turbulence, heat transfer in the continuously cast slab mold with the FC Mold G3 is established, and the effects of different electromagnetic flow control methods of the FC Mold G3 on the flow and initial solidification behavior in the mold are investigated. The simulation results indicate that the velocity and temperature distribution at the top surface are more uniform when the EMS current is 150 A, but it does not improve the uniformity of the solidified shell. The initial solidified shell growth becomes more uniform after the EMBr is applied, but the local velocity of the steel–slag interface increases. When the current intensities of EMS and EMBr of FC Mold G3 are, respectively, 150 and 600 A, the velocity near the meniscus and the uniformity of the solidified shell become more reasonable and the impact depth is suppressed.