喷丸对国产化汽车齿轮钢接触疲劳性能的影响  

Effect of Shot Peening on Contact Fatigue Property of Domestic Automotive Gear Steel

作　　者：吴登真 陈朝鸿 王晓实 肖宏斌[2] 邵尔玉[2] 陈青[2] 

机构地区：[1]长春汽车材料研究所 [2]洛阳工学院

出　　处：《汽车技术》1993年第2期38-46,共9页Automobile Technology

摘　　要：通过对ZF7、SCM420H等国产化汽车齿轮钢与20CrMnTi钢的对比试验表明,喷丸对渗碳件条件(N=5×10~6次)接触疲劳极限可提高6%;在较低应力下,接触疲劳寿命明显提高,如在σ_(max)=3300MPa下,寿命提高60%左右;在较高应力下,影响不大。喷丸是改善零件表层种种缺陷的有效而简便的方法。Based on the comparative tests of domestic automotive gear steel ZF7, SCM420H, etc. and steel 20CrMnTi, it is concluded that the N=5×10~6 cycles conditional contact fatigue limit of the carburized parts is increased by 6% after shot peening. In addition, the contact fatigue life is evidently enhanced under lower stress, for instance, the life is enhanced by 60% under σ_(max)=3300MPa; but only a little effect under higher stress. Shot peening is an effective and simple way for making up various surface defects of parts.

关 键 词：喷丸 齿轮钢 接触强度 

分 类 号：TG142.45[一般工业技术—材料科学与工程]