应用粉末冶金工艺来制造触头材料,其意义愈来愈受到人们的重视,因为异种金属材料的特性要比纯金属和熔化合金优越得多。粉末冶金简单的工艺过程就是将制备的金属粉末,经按比例的混合、磨细、用高压压成致密块直至烧结。爆炸粉末冶金法就是通过爆炸产生的高压力使金属粉末混合物压制成固 The use of powder metallurgy process to manufacture contact materials, the significance of more and more people’s attention, because the characteristics of dissimilar metals than pure metals and molten alloys is much better. Powder metallurgy simple process is to prepare the metal powder, by the proportion of mixing, grinding, pressing into a dense block with high pressure until sintering. Explosive powder metallurgy is the high pressure generated by the explosion of metal powder mixture pressed into solid