Investigation of flow and heat transfer characteristics in CSP mold with electromagnetic braking
Taking the compact strip production(CSP)funnel-shaped mold as research object,a three-dimensional multi-field coupling mathematical model was established to describe electromagnetic braking(EMBr)continuous casting process and to investigate the effects of electromagnetic parameters on the behavior of molten steel flow,heat transfer,and solidification in the CSP mold.The results indicate that the Lorentz force generated by the Ruler-EMBr can improve the uniformity of molten steel temperature distribution near the meniscus region.This is beneficial to improving the fluidity of molten steel and promote the melting of mold flux.The parametric study also shows that the flow control and heat transfer capability of molten steel in the CSP mold can be well improved with the magnetic flux density of 0.30 T.However,when the magnetic flux density continues to increase to 0.50 T,the jet flow discharged from a submerged entry nozzle is excessively suppressed by the Lorentz force,resulting in an increase in the velocity and heat transfer rate of the upward backflow.Correspondingly,the uniformity of molten steel temperature distribution in the upper recirculation region of CSP mold is decreased.
electromagnetic brakingCSP moldmolten steel flowheat transfer and solidification
NETL
NSTL
万方数据
维普
