传统高温合金叶片类铸件制备过程中,熔体长时间在陶瓷模壳材料中保温,易受其污染,而借助于交变电磁场与液态金属相互作用产生的电磁压力可使高温合金呈半悬浮状态,减少了熔体与磁模结晶器的接触面积和时间,能尽可能避免污染的产生.将该方法和定向凝固技术相结合,提出了1种实现高温合金复杂形状电磁软接触成形的定向凝固工艺,探讨了该工艺下不同结晶器材料、磁化套高度及其所加方位对线圈中磁感应强度的影响,并在实验室中成功制备出了2种近叶片形状的高温合金电磁软接触成形的定向凝固样件.
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