淬火内应力是工件不同部位变温速度的差异是内应力的来源。淬火冷却时，变温速度的不均匀性最大，引发的内应力也最大，故淬火内应力。
轴承零件在淬火冷却过程中因内应力所形成的裂纹称淬火裂纹。
Bearing parts in the process of hardening cooling by internal stress due to the formation of quenching cracks crack said.
介绍了渗碳淬火零件热处理畸变的原因，分析了热处理内应力的形成过程。
The present paper analyzed the reasons of heat treatment distortion of carburizing and hardening components and the formation process of the internal stress.
总之，造成淬火裂纹的原因可能是上述因素的一种或多种，内应力的存在是形成淬火裂纹的主要原因。
In short, the causes of cracks caused by hardening of these factors may be one or more, the existence of internal stress is the main reason for the formation of quenching cracks.
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