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用数值模拟方法研究了圆坯中频电磁软接触连铸结晶器内磁场分布,讨论改变结晶器结构参数、工艺参数和电参数等因素对结晶器内磁场的影响。结果表明,结晶器内磁场强度在结晶器高度方向上先增大再减小,在感应线圈中心偏下处,磁感应强度达最大;综合考虑结晶器结构和透磁性,切缝宽度选为0.5 mm,切缝数为8;当自由液面位于感应线圈的中心位置时能获得最大的磁感应强度;随着电流和频率的增加,结晶器内磁感应强度也随着增加。
The distribution of magnetic field in the intermediate frequency electromagnetic soft contact continuous casting mold of round billet was studied by means of numerical simulation. The influence of changing the structural parameters, technological parameters and electrical parameters of the mold on the magnetic field in the mold was discussed. The results show that the strength of the magnetic field in the mold first increases and then decreases in the height direction of the mold, and the magnetic induction intensity reaches the maximum at the center of the induction coil. Considering the structure and permeability of the mold, the width of the slit is 0.5 mm , The number of kerf is 8. When the free liquid level is in the center of the induction coil, the maximum magnetic induction can be obtained. With the increase of current and frequency, the magnetic induction in the mold also increases.