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介绍了用Ag作为防偏析元素在我国航空发动机用双金属ZCuPb30轴瓦上的应用。结果表明,将2.75%~3.25%Ag加入ZCuPb30熔体,同时结合快速水冷工艺可使铅偏析得到很好的控制。讨论了Ag防止ZCuPb30合金铅偏析的原因。
The application of Ag as anti-segregation element on bimetallic ZCuPb30 bearing in aeroengine is introduced. The results show that the addition of 2.75% ~ 3.25% Ag into the ZCuPb30 melt, combined with rapid water cooling process lead segregation can be well controlled. The reason why Ag prevents lead segregation in ZCuPb30 alloy is discussed.