Effect of Ultrasonic Rolling on Surface Properties of GCr15 Spherical Joint Bearing

被引:0
|
作者
Zhang, Hao [1 ]
Yang, Xiuli [2 ]
Ma, Xiqiang [1 ,3 ]
Jin, Dongliang [3 ,4 ]
You, Jinyuan [1 ]
机构
[1] Henan Univ Sci & Technol, Sch Mechatron Engn, Luoyang 471003, Peoples R China
[2] CCCC Second Harbour Engn Co Ltd, Wuhan 430040, Peoples R China
[3] Longmen Lab, Luoyang 471003, Peoples R China
[4] Natl Joint Engn Res Ctr Abras Control & Molding Me, Luoyang 471003, Peoples R China
关键词
ultrasonic rolling; surface roughness; surface hardness; friction coefficient; wear volume;
D O I
10.3390/lubricants12060208
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Ultrasonic surface rolling process (USRP) has the potential to improve the surface mechanical properties of metal components with platelike or cylindrical macrostructure, but its effect on spherical surfaces remains to be studied in depth. In order to investigate the effect of USRP on the surface roughness, hardness and wear resistance of a spherical joint bearing made of GCr15 bearing steel, ultrasonic rolling strengthening was carried out on a spherical bearing surface under various conditions. The surface roughness and hardness variations of samples before and after strengthening were investigated. It was found that the USRP strengthening process can effectively enhance the surface properties of GCr15 spherical bearing materials, reduce the surface roughness by more than 45%, and increase the surface hardness by more than 10%. Friction and wear tests were carried out before and after ultrasonic rolling. The results show that the friction coefficient of the bearing surface can be reduced by 28%, and that the wear volume can be reduced by 29%. The variation in the friction coefficient correlated to the variance of wear volume as the reinforcement changes.
引用
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页数:12
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