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首页> 外文期刊>Journal of Materials Engineering and Performance >Evolution of Residual Stress and Distortion of Cold-Rolled Bearing Ring from Annealing to Quenched-Tempered Heat Treatment
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Evolution of Residual Stress and Distortion of Cold-Rolled Bearing Ring from Annealing to Quenched-Tempered Heat Treatment

机译：冷轧轴承环的残余应力和变形的进化从退火淬火热处理

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摘要

This study investigates the correlation between the residual stress and distortion behavior of a cold-rolled ring from the annealing to quenching-tempering (QT) process. Due to the cold-rolled process, the external periphery of the bearing ring experiences a compressive residual stress. To relieve the residual stress, cold-rolled rings are annealed at 700 A degrees C which is higher than the starting temperature of recrystallization. When cold-rolled rings are annealed at 700 A degrees C for 15 min, the compressive residual stress is reduced to zero and the outer diameter of the annealed ring becomes larger than that of a non-annealed sample, which is unrelated to annealing time. Simultaneously, the roundness and taper deviation do not obviously change compared with those of non-annealed sample. The stress relaxation during the annealing process was attributed to the recovery and recrystallization of ferrite. Annealing has a genetic influence on the following QT heat treatment, wherein the lowest residual stress is in the non-annealed cold-rolled ring. From the annealing to QT process, the deviation of the outer diameter, roundness, and taper increased with annealing time, a large extend than that of non-annealed samples.
机译：本研究调查了冷轧环件从退火到淬火回火（QT）过程中残余应力和变形行为之间的相关性。由于采用冷轧工艺，轴承套圈的外周承受残余压应力。为了消除残余应力，冷轧环件在高于再结晶起始温度的700°C下退火。当冷轧环在700℃下退火15分钟时，残余压应力降至零，退火环的外径比未退火样品的外径大，这与退火时间无关。同时，与未退火试样相比，圆度和锥度偏差没有明显变化。退火过程中的应力松弛归因于铁素体的回复和再结晶。退火对以下QT热处理有遗传影响，其中最低残余应力在未退火的冷轧环中。从退火到QT过程，外径、圆度和锥度的偏差随着退火时间的延长而增加，比未退火样品的偏差大得多。

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