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基于有限元方法,利用ANSYS软件模拟计算了大圆坯连铸结晶器电磁搅拌(M-EMS)器内三维磁场分布,分析了铜管厚度、断面和搅拌电流、频率对磁场分布的定量影响,并通过磁场的实验测定对数学模型进行了验证。研究表明,磁场模拟结果与实测结果吻合得较好;结晶器铜管对磁场具有较强的屏蔽作用,铜管越厚,屏蔽作用越强;小断面结晶器内磁感应强度大于大断面的情况;磁感应强度随着频率的增大而减小,随电流的增大而增大。
Based on the finite element method, the three-dimensional magnetic field distribution in the M-EMS furnace was simulated and calculated by ANSYS software. The influence of the thickness, cross section, stirring current and frequency on the magnetic field distribution was analyzed. The mathematical model was verified by the experiment of magnetic field. The results show that the simulation results of the magnetic field are in good agreement with the measured ones. The mold copper tube has a strong shielding effect on the magnetic field. The thicker the copper tube, the stronger the shielding effect. The magnetic induction intensity in the small mold section is larger than the large one. The magnetic induction intensity decreases with the increase of frequency and increases with the increase of current.