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一、轴承套圈毛坯 1.冷挤压和温挤压工艺 近年来冷挤压小型轴承套圈已在部分轴承厂开始使用,收到较好效果。 上海红星轴承厂从1972年起用轴承钢(GCr15)冷挤压102、103、201、202、203、302等型号内圈,变形程度最大达50%,挤压工序是在一台160吨闭式压力机和一台开式压力机上进行的。闭式压力机采用回转式多工位自动送料模具,开式压力机采用夹板式多工位自动送料模具,分别完成挤压、
First, the bearing ring rough 1. Cold extrusion and warm extrusion process In recent years, cold extrusion of small bearing rings in some bearing plant began to use, received good results. Shanghai Hongxing Bearing Factory from 1972 bearing steel (GCr15) cold extrusion 102,103,201,202,203,302 and other models of the inner ring, the deformation up to 50%, the extrusion process is a 160-ton closed Press and an open press. Closed press with rotary multi-station automatic feeding mold, open press with plywood multi-station automatic feeding mold, respectively, to complete the extrusion,