挤压铸造ZA27合金蜗轮的缺陷分析

Defects Analysis on ZA27 Zinc Alloy Worm Gear Produced by Squeezing Casting

利用挤压铸造技术制备了ZA27合金蜗轮。介绍了ZA27合金蜗轮挤压铸造生产的基本工艺过程以及铸件产生的分层、气泡、裂纹等常见缺陷,分析了其形成机理及影响因素,提出了相应对策,并经生产验证了其可行性。

Zinc alloy worm gears were produced by squeeze casting. The process and defects such as strat- ification, bubble, crack, were introduced. The origination of these defects was described, and the coun- termeasures were presented. Meanwhile, the feasibility was verified by the practical production.