日本日产汽车公司在制造等速联轴节总成用的滑动联轴节支架时,用冷锻代替了热锻。采用冷锻工艺虽然需要改变1048钢的成分、热处理和修改工具设计,但由此而得到的近似零件精确形状的型材可减少64％的材料消耗和20％的机加工时间,生产率为每分钟20件。冷锻之前,按规定长度从棒材上切下毛坯料,并进行球化处理。冷锻 Japan’s Nissan Motor Co., Ltd. used cold forging instead of hot forging in the manufacture of sliding coupling supports for constant-speed coupling assemblies. Cold Forging Process Although the composition, heat treatment and modification tool design of 1048 steel needs to be changed, the resulting profile approximating the precision of the part reduces material consumption by 64% and machining time by 20% with a productivity of 20 Pieces. Before cold forging, according to the required length of material cut from the bar blank, and the ball treatment. Cold forging