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采用机械合金化工艺由Cu、Cr粉按重量比各半合成CuCr预合金粉 ,然后用爆炸压实工艺制备真空断路器用电触点材料CuCr合金。着重研究了爆炸压实工艺参数对CuCr预合金粉爆炸压实的影响。结果表明 :采用不同的爆炸工艺参数 ,都能爆炸成型得到密度超过相对理论密度 ( 92 % )的CuCr合金 ;另外 ,双管装置优于单管装置 ;提高装粉密度对爆炸成型有利。随着装药密度、药粉比或药粉筒比的增加 ,爆炸坯密度先逐渐提高 ,而后减小 ;球磨时间对爆炸坯密度影响较为复杂。
The mechanical alloying process is used to prepare CuCr alloy powder by using Cu and Cr powder according to the weight ratio of each semi-synthetic CuCr pre-alloy powder, and then using explosion compacting technology to prepare the vacuum interrupter electrical contact material CuCr alloy. The impact of explosion compacting process parameters on the detonation compaction of CuCr prealloyed powder was emphatically studied. The results show that the CuCr alloy with densities higher than the theoretical density (92%) can be obtained by explosion molding. In addition, the double tube device is superior to the single tube device. Increasing the packing density is beneficial to the explosion molding. With the increase of charge density, powder ratio or powder tube ratio, the density of explosive billet first increases gradually and then decreases. The effect of ball milling time on the explosive billet density is more complicated.