真空开关CuCrTe触头材料的组织与性能

为了改进混粉烧结CuCrTe触头材料的缺陷并且增大触头材料的开断能力,采用真空熔铸法制造工艺研制了CuCrTe触头材料并对其性能进行了测试。结果表明,真空熔铸CuCrTe材料在显微组织、抗熔焊性能、开断电流能力、截流水平、耐电压水平方面都优于粉末冶金CuCr50材料,特别是开断电流能力提高了26%多,是一种有发展前途、性能优良的触头材料。

Microstructure and Properties of CuCrTe Contact Material for Vacuum Switches

Because of deficiencies of CuCrTe contact material manufactured by powder metallurgy(PM) process and improving its breaking current capacity,the vacuum melting manufacturing process was used to manufacture CuCrTe contact material and its properties were tested in this paper.The results of test show that the microstructure,anti-welding property,breaking current capacity,chopping current level and voltage withstand characteristics of CuCrTe material made by vacuum melting were better than those of CuCr50 material made by traditional power metallurgical technique,especially its breaking current capacity has been improved about 26%,therefore,it is a new type of contact material with better properties.