【摘要】 通过对轴承套圈毛坯的多种温冷挤压工艺进行系统试验和比较分析,找到了生产中小型轴承套圈毛坯的最佳工艺流程,即采用料段经镦粗-冲孔预先制出环形坯,然后用塔形复合终挤法获得内圈和外圈毛坯,其主要优点是冲头压强小,材料利用率高。附图7幅,表3个。更多还原

【Abstract】 The optimum technological process for producing medium and small size bearing ring blanks was found ofter serial testings and comparative analyses of various warm and cold extrusion processes for bearing ring blanks, The new process as follows: upsetting-punching-combi-ned extruding to get inner and outer ring blanks. The main advantages are high material utilization ratio, small pressure intensity on punch.更多还原