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分析了化学成分和热处理工艺参数对铍铜合金硬度和组织的影响。随着含Ｎｉ量的增加，析出物数量增多，铍铜硬度提高。铍铜压射冲头的使用寿命是球铁压射冲头的２．５倍多。另外，对压射冲头的失效形式进行了初步
The effects of chemical composition and heat treatment process parameters on hardness and microstructure of beryllium copper alloy were analyzed. With the increase of Ni content, the amount of precipitates increased and the hardness of beryllium copper increased. Beryllium copper injection punch life is 2.5 times the ductile iron shot punch. In addition, the initial form of failure of the injection punch