在锤上模锻长杆类锻件时，常用滚挤和拔长工步进行制坯。
When long-rod type forgings drop-forged, fullering and edging are often selected as preform operations.
在齿轮热滚挤加工中，轮齿上的金属在强制挤压力的作用下沿齿面产生塑性流动，使齿形发生变化。
During ausform finishing process of hardened gears, there is plastic displacement of metal on the tooth surface and the distortion of tooth profile.
本文对花键整体凹模正挤工艺、多辊冷挤压成形工艺、冷滚轧成形工艺、平板齿条搓挤工艺等花键冷成形技术和特点进行介绍。
This article introduced some methods of spline cold forming technology: forward die extrusion die forming, mud-rolls die extrusion forming, cold rolling forming and plate type cold rolling forming.
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