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本文介绍了30CrMnSiA钢的九种不同的重复热处理工艺，结果显示B种热处理工艺能使30CrMnsiA钢具有最佳的抗疲劳性能并证明不同的重复热处理状态对钢的疲劳性能有影响。
In this paper, nine different repeated heat treatments of 30CrMnSiA steel are introduced. The results show that B heat treatment process can make 30CrMnsiA steel have the best anti-fatigue performance and prove that different states of repeated heat treatment affect the fatigue performance of steel.