提高曲轴疲劳极限的强化工艺探讨  

Discussion on Strengthening Process for improving fatigue limit of crankshaft

作　　者：张小红[1] 蒋国辉 章驰 唐新民[1] 

机构地区：[1]江铃汽车股份有限公司,江西南昌330001 [2]江西辉业汽配有限公司,江西南昌330001

出　　处：《热处理技术与装备》2017年第6期27-31,共5页Heat Treatment Technology and Equipment

摘　　要：为了提高曲轴疲劳极限从而达到提高曲轴使用寿命的目的,本文主要是选用三种曲轴复合强化工艺进行对比试验,通过试验结果分析来探讨曲轴强化工艺对提高曲轴疲劳极限的影响。结果表明气体软氮化+表面滚压强化工艺对提高曲轴疲劳极限效果最好,离子氮化+表面滚压强化工艺次之,高频淬火+表面滚压强化工艺结果稍差。In order to improve the crankshaft fatigue limit so as to improve the service life of the crank- shaft, the contrast test is mainly carried out for the compound strengthening process of three crankshafts in this paper, and the effect of the strengthening process of crankshaft on improving the fatigue limit of crank- shaft is analyzed and discussed by the test results. The results show that the gas nitroearburizing ＋ surface rolling strengthening process has the best effect ion nitriding ＋ surface rolling surface rolling strength strengthening process is ening is slightly on improving the fatigue limit of crankshaft, the process of secondary, and the result of high frequency quenching ＋ poor.

关 键 词：气体软氮化 离子氮化 高频淬火 滚压强化 疲劳极限 

分 类 号：TG156[金属学及工艺—热处理]