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局部镦粗工艺是锻压生产中应用比较多的工艺方法之一。例如:汽车工业中的半轴、汽阀以及大型螺栓等具有粗大部分的杆型锻件,都需要进行局部镦粗。如图1所示。
Local upsetting process is one of the more applied process forging production. For example: the semi-shaft in the automotive industry, steam valves and large bolts and other large part of the rod forgings, are required for local upsetting. As shown in Figure 1.