渗碳淬火是最常用的齿轮热处理工艺。本文总结了影响变形的关键因素：钢材淬透性、渗碳温度均匀性、淬火介质选择、装炉方式等。通过优化工艺，可将齿轮变形控制在0.02mm以内。
Carburizing is the most common gear heat treatment. Key factors: steel hardenability, temperature uniformity, quenchant selection, loading method.
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