准高速机车牵引齿轮弯曲疲劳强度的试验研究  

Contact Fatigue Property Coutrast test of the Dragging Gear on Quasi High-Speed Locomotive

作　　者：戴雅康[1] 任瑞铭[1] 李国柱[1] 

机构地区：[1]大连铁道学院材料科学与工程系

出　　处：《大连铁道学院学报》1995年第4期50-57,共8页Journal of Dalian Railway Institute

基　　金：铁道部科技发展计划项目

摘　　要：对２０ＣＲｒＮｉ２Ｍｏ、１５ＣｒＮｉ６及２０ＣｒＭｎＭｏ渗碳淬火齿轮及１５ＣｒＮｉ６渗碳淬火＋喷丸处理齿轮进行了弯曲疲劳试验，介绍了齿轮试件的设计与加工、试验装置与夹具、试验方法及试验数据的统计处理，试验结果表明，２０ＣｒＮｉ２Ｍｏ和１５ＣｒＮｉ６渗碳淬火齿轮在Ｒ＝０．９９时的σＦｌｉｍ分别为５３０ＭＰａ和３７５ＭＰａ，与２０ＣｒＭｎＭｏ渗碳淬火齿轮相比，弯曲疲劳强度分别提高８０％和２７％。１５ＣｒＮｉ６经渗碳淬火＋喷丸处理齿轮在Ｒ＝０．９９时的σＦｌｉｍ为４９０ＭＰａ，比未喷丸处理者提高３０％。The contact fatigue strength was measured after the 20CrNi2Mo and 15CrNi6 steel used asdragging gear on quasi high speed locomotive was carburized and quenched as well as peened,com-pared with that of 20CrMnMo steel.The results shown that the contact fatigue strength limits of thesethree types of steel carburized and quenched essentially same,and the contact fatigue strength Iimit hasbeen increased by 5 porcent after peening,and that the failure appoarances of all contact fatiguespecimen were delamination formed in cauburized layer. The effect of residual austenite amount incarburizing layer and the peening on the contact fatigue property were discussed.

关 键 词：弯曲疲劳 高速机车 牵引齿轮 疲劳强度 

分 类 号：U260.2[机械工程—车辆工程] TH132.41[交通运输工程—载运工具运用工程]