Abstract: The distribution of magnetic field in electromagnetic soft-contact mold with different slit parameters was analyzed through 3-D FEM numerical simulation method. The results show that the cover placed on the top of the mold has little influence on the distribution of magnetic field with or without closed slit. With increment of slit number, the permeability of magnetic field and the maximum value of magnetic flux density become larger. The magnetic flux density becomes more uniform along the circumference. The width of slit has little effect on the distribution of magnetic field. The longer the slit length is, the larger the maximum value of magnetic field is, and the effective acting range of magnetic field becomes larger.

Key words: electromagnetic continuous casting, numerical simulation, structure of mold, slit, distribution of magnetic field

摘要： 通过有限元法三维数值模拟，研究了不同结构参数对圆坯电磁软接触结晶器内部磁场的影响规律. 结果表明，对于部分切缝结晶器，结晶器口部有无盖板对其内部磁场分布的影响不大；增加结晶器切缝数，结晶器内磁场的渗透率、磁感应强度、磁场的有效作用范围及磁场的均匀性都得到增强；切缝宽度对结晶器内部磁场的影响不大；切缝长度越长，磁感应强度越大，磁场的有效作用范围越大.

关键词: 电磁连铸, 数值模拟, 结晶器结构, 磁场分布