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消失模铸造时,为了满足铸件局部特殊性能要求,在铸件模样局部加入合金元素同时加入稀土元素。铸件成形后,合金元素与稀土元素同时溶入了铸件相对应部位。试验证明,铸件局部合金化可以改善消失模铸件的局部特殊性能。
Lost foam casting, in order to meet the special requirements of the cast part of the local requirements in the cast part of the model by adding alloying elements while adding rare earth elements. After the casting is formed, alloying elements and rare earth elements dissolve into the corresponding parts of the casting at the same time. Tests have shown that the local alloying of castings can improve the local special properties of lost foam castings.