附图所示的齿轮颈部比较长,内孔比较小;原来采用的工艺需要两火才能锻成,而且锻后小端部不整齐,不好平整。车间老师傅桑四则同志提出一个改进的建议,经过实际应用,效果很好。新的锻造工艺是:首先压出φ120的台,而进个台比原直径大15～20毫米,这样总长就变小了;随后冲孔,再用摔子拔到要求的长度。结果锻件头部平整了,火次从两火改成一 The gear neck shown in the accompanying drawings is relatively long and the inner hole is relatively small. The original process requires two fires to be forged, and the small end of the gear is not neat and not well formed. Workshop teacher Fu Sang four comrades proposed an improved proposal, after practical application, the effect is very good. The new forging process is: first out of φ120 Taiwan, and into the Taiwan than the original diameter of 15 to 20 mm, so the total length becomes smaller; then punching, and then pulled the required length of the wrestling. As a result, the head of the forging was flattened and the fire was changed from two fires to one