为了优化电磁铸造工艺过程,采用互感耦合模型,对电磁铸造扁锭的电磁场进行了数值模拟计算,重点考察了屏蔽罩位置、电源频率等对磁场强度分布的影响.计算结果表明:有载条件下的半悬浮液柱,除弯月面外,整个液柱上下粗细均匀,可以保证电磁铸造过程不受液面波动的影响;电磁铸造过程的感应热的计算,与实际情况吻合较好,已成功应用于电磁铸造过程温度场的数值模拟.屏蔽罩的插入可以明显消弱液柱上方的磁场强度,抑制表面扰动,频率越高,屏蔽效果越好.
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