Friction and Wear Characteristics and Mechanism Analysis of Load and Nano MoS2 Additive on Circular Hammerhead-Bar

被引：0

作者：

Zhang L. ^{[1
]}

Han L. ^{[1
]}

Zhang D. ^{[1
]}

Li Z. ^{[1
]}

Zhang J. ^{[1
]}

Jin Y. ^{[1
]}

Wang H. ^{[1
]}

机构：

[1] College of Electromechanical Engineering, China University of Petroleum, Qingdao, 266580, Shandong

来源：

Mocaxue Xuebao/Tribology | 2019年 / 39卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Antifriction and antiwear; Circular hammerhead-bar friction pair; Load; Nano MoS[!sub]2[!/sub] additive; Precision cropping;

D O I：

10.16078/j.tribology.2019128

中图分类号：

学科分类号：

摘要：

Aiming at solving the wear problem of the arc-shaped contact surface between the circular hammerhead and the bar in precision blanking, the tribological performance of GCr15 steel block-45 steel column tribo-pair was dertermined on a WTM-2E controllable atmosphere micro-friction and wear tester, under lubrication of oils containing nano-MoS2 additive (mass fraction of 0%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.7%), focusing on the friction and wear results under different loads. The worn surface of GCr15 steel was observed by scanning electron microscopy and analyzed by energy dispersive spectrometer. The possible mechanisms of lubrication and self-repair were discussed. The results show that increasing the applied load increased the contact stress, friction coefficient and wear. The wear regime varied from mild abrasive wear to adhesive wear. Friction coefficient and wear first decreased and then increased as the mass fraction of MoS2 additive increased. Oil with the mass fraction of MoS2 additive of 0.1% to 0.3% provided good lubrication. By comparing the noise, vibration speed and temperature rise of the tribo-pair, oil with 0.1% nano-MoS2 additive showed the best tribological performance. © 2019, Science Press. All right reserved.

引用

页码：777 / 785

页数：8

共 21 条

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