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CJ640客车为城市用大型公用汽车,满载后总重量近12吨,其主要承载零件前轴,材料为45钢,锻件重量达95公斤,按常规模锻生产,须用10吨以上模锻锤才能锻造,而我厂目前尚无此条件。我们在进行多次试验后,终于在0.75吨蒸汽自由锻锤上成功地锻出了合格的锻件,经循环疲劳试验,完全符合要求,现已投入了批量生产。前轴锻件图见图1。前轴锻造工艺过程 1.坯料的选用:
The CJ640 passenger car is a large utility vehicle for the city. After full load, the total weight of the CJ640 passenger car is nearly 12 tons. The main bearing of the CJ640 passenger car is 45 steel. The forging weighs 95 kg. According to conventional forging production, Forging, and I plant currently no such conditions. After several tests, we finally succeeded in forging a qualified forgings on 0.75 tons of steam free forging hammer. After cyclic fatigue test, we fully met the requirements and has now put into mass production. Front axle forgings figure shown in Figure 1. Forging process front axle 1. Blank selection: