Mathematical Simulation on Coupled Fluid Flow,Heat Transfer and Solidification in Bloom Continuous Casting Mold
Taking 42CrMo steel with cross-sectional dimension 240mm×240mm as research object,a three-dimensional mathematical model has been established to research effects of the submergence depth of the submerged entry nozzle(SEN)and casting speed on flow field and solidification at 25℃ of superheat temperature taking effect of air-gap into account in the mold region of bloom continuous casting process.With the increasing of SEN-depth,the distance between backflow vortex core and free surface increases and backflow vortex core moves up obviously.Solidified shell thickness decreases from 32.43mm to 17.83mm with the casting velocity from 0.5m/min to 0.9m/min.In conclusion,according to the comparative analysis,the optimal combinations of process parameters are the depth of SEN of 100mm and the casting speed of 0.5m/min to 0.7m/min in order to ensure the production efficiency and the bloom quality for the 42CrMo steel with cross-sectional dimension 240mm×240mm.
bloom mathematical simulation fluid flow heat transfer solidification
WEN Yanmei LIU Shaowei HAN Yanshen LIU Qing
State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China
国际会议
STEELSIM2017(第七届冶金过程及钢铁材料模拟及仿真国际会议)
青岛
英文
304-307
2017-08-16（万方平台首次上网日期，不代表论文的发表时间）