摘要
电磁制动对结晶器内钢液流动具有显著影响,为明确电磁力对高拉速薄板坯结晶器内流场分布的影响规律,建立了薄板坯电磁连铸结晶器内钢液流动的三维数学模型,利用数值计算方法研究磁场与流场耦合对钢液的流动影响。模拟结果表明,五段式电磁制动技术产生的恒稳磁场可以显著抑制钢液湍流流动,降低弯月面波动,且具有稳定钢渣界面的作用;通过研究高拉速与制动力的产生关系,揭示了由线圈产生的磁感应强度与不同拉速的匹配程度。
Electromagnetic braking has a significant effect on the flow of molten steel in the mold.In order to clarify the influence of electromagnetic force on the distribution of flow field in thin slab mold with high drawing speed,a three-dimensional mathematical model of molten steel flow in thin slab electromagnetic continuous casting mold was established.The numerical calculation method was used to study the influence of the coupling of magnetic field and flow field on the flow of molten steel.The simulation results show that the stable magnetic field produced by the five stage electromagnetic braking technology can significantly inhibit the turbulent flow of molten steel,reduce the meniscus fluctuation,and stabilize the interface of steel slag.Through the study of the relationship between high pulling speed and braking force,the matching degree between the magnetic induction intensity produced by the coil and different pulling speed is revealed.
作者
李康康
张彩军
肖鹏程
张燕超
侯明山
赵建平
LI Kang-kang;ZHANG Cai-jun;XIAO Peng-cheng;ZHANG Yan-chao;HOU Ming-shan;ZHANG Jian-ping(College of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063210,Hebei,China;Hebei High Quality Steel Continuous Casting Technology Innovation Center,Tangshan 063000,Hebei,China;Tangshan Branch,Hegang Co.,Ltd.,Tangshan 063000,Hebei,China)
出处
《连铸》
2020年第6期9-14,共6页
Continuous Casting
基金
国家自然科学基金资助项目(51904107)
河北省教育厅青年拔尖人才计划资助项目(J2019041)
唐山市科技计划资助项目(19130228g)。
关键词
薄板坯连铸
结晶器
电磁制动
流体流动
数值模拟
thin slab continuous casting
mold
electromagnetic braking
fluid flow
numerical simulation
