1. During ausform finishing process of hardened gears, there is plastic displacement of metal on the tooth surface and the distortion of tooth profile.
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。
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2. Therefore, the conventional heat treatment process after forging can be replaced by the new ausform hardening process, to save energy and improve production efficiency.
因此，新的锻热淬火工艺可以代替传统的锻后热处理工艺，达到节能降耗、提高生产效率的目的。
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3. Therefore, the conventional heat treatment process after forging can be replaced by the new ausform hardening process, to save energy and improve production efficiency.
