本文通过设计和选择真空实型铸造主要工艺装备，试验研究了所设计的真空实型铸造装备的工艺性能。

This paper is concerned with the design of vacuum full-mold casting equipment. The processing properties of this equipment are also studied in this paper.

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试验结果表明，砂型铸造铜套性能较差，而真空吸铸铜套性能较好，可以替代卷制铜套。

Result of testing shows that proPerty of sand casting bushing is unsatisfactory and that of vacuum casting bushing is better, which can be used to replace the pressed bushing.

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本文试验研究了钇基稀土用于改善铸造镍基耐蚀合金性能的效果。

The effect on improving the properties of Ni-base alloy was studied in this paper based on variation in adding amount of rare-earth metals.

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