我厂主要产品丰收—4型分配式喷油泵中的三个零件(内凸轮、滚柱和滚柱座)是用W18Cr4V高速钢制造的。因工作条件苛刻,这三个零件材料的碳化物均匀度等级、热处理状况、表面光洁度或几何形状稍有偏差,就易发生烧伤粘结损坏。有些运转不到半小时就发热,滚柱和滚柱座表面遭受严重损伤。有些工件虽然开始工作时尚正常,但运转十多小时也 Our main product Harvest-4 distributed injection pump in the three parts (inner cam, roller and roller seat) is made of W18Cr4V high-speed steel. Due to harsh working conditions, these three parts of the carbide uniformity level, heat treatment conditions, surface finish or geometry slightly deviate, it is prone to burn injury. Some run less than half an hour on the heat, roller and roller seat surface suffered serious damage. Although some work began to work fashion normal, but more than 10 hours of operation