熔渗法CuW触头材料W骨架压坯密度理论计算公式的研究

Study on the Calculated Formula of the Green Density of W Skeleton of CuW Contact Materials Manufactured by Infiltration

从理论上推导出熔渗法CuW触头材料W骨架压坯密度的理论计算公式和CuW合金化学成分与W骨架压坯密度的关系公式 ,分析并提出了W骨架压坯密度的控制范围。用化学分析方法测定了CuW合金的化学成分 ,用分析天平测试了CuW合金的密度。结果显示 :熔渗方法制造的CuW触头材料 ,使用压坯密度理论计算公式确定的W骨架压坯 ,熔渗Cu后CuW合金实际化学成分与成分设定值吻合很好 ,CuW合金实际密度与密度设定值也吻合很好 ,并符合GB/T8320标准和用户的使用要求。实验证明 ,用熔渗法CuW触头材料W骨架压坯密度的理论计算公式 ,能正确地计算出W骨架压坯的密度 ,是一种合理的计算方法 。

The calculated formula of the green density of W skeleton and the relationship between the composition and the green density of W skeleton of CuW contact materials manufactured by infiltration were educed from the theory.The range of the green density of W skeleton was analyzed and reasonable value was found.The composition of CuW alloy was measured by means of chemical analysis and the density was measured by anaˉlytical balance too.The results indicated that the practical density and the composition of CuW alloy manufactured by the W skeleton green compact which designed by the calcuˉlated formula and infiltrated by copper were consistent with the value counted by the formula and accorded with the national standard GB8320and the request of clients.Exˉperiments shows that the green density of W skeleton of the CuW alloy manufactured by infiltration could be counted by the calculated formula accurately.This way is reasonable and could direct the produce of the CuW conduct materials.