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采用机械合金化工艺由Cu ,Cr元素粉按质量比各半合成CuCr预合金粉 ,然后采用爆炸烧结工艺制备真空断路器用电触头材料CuCr合金 ,着重研究了工艺参数对CuCr触头材料性能的影响。结果表明 :采用该工艺能制备高密度 (超过 7.398g/cm3)、高硬度 (超过HB144 )和低电导率 (低于 10 6kS/m)的CuCr触头材料 ;球磨时间对CuCr合金性能影响较大 ,随着球磨时间的增加 ,CuCr合金密度和硬度逐渐升高 ,而电导率则减小 ;装药密度对CuCr合金的性能影响较小 ;药粉比或药粉筒比选择得太高或太低都会引起CuCr合金性能的降低
The mechanical alloying process is used to prepare CuCr alloy by using Cu and Cr elemental powders in mass proportions by mass ratio, and then the CuCr alloy is prepared by explosion sintering process. The effects of process parameters on CuCr contact material properties Impact. The results show that CuCr contact materials with high density (over 7.398g / cm3), high hardness (over HB144) and low conductivity (less than 106kS / m) can be prepared by this process. The density and hardness of CuCr alloy gradually increase with the increase of ball milling time, while the electrical conductivity decreases. The density of CuCr alloy has little effect on the packing density. The ratio of flour to powder or flour is too high or too low Will cause CuCr alloy performance reduction