锻压技术

不同润滑介质作用下GCr15/10钢摩擦与润滑特性分析

英文标题：Analysis on friction and lubricating characteristics for steel GCr15/10 under different lubrication mediums

作者：缪军龚红英张杰姜天亮廖泽寰许志敏

分类号：TH117.1

出版年,卷(期):页码：2018,43(7):170-175

摘要：

利用球-盘式摩擦磨损试验机对GCr15/10钢摩擦副在无润滑以及冷精整用乳化液、MoS2水基润滑液、磷化-皂化膜层和水基高分子混合液这几种不同润滑条件下进行摩擦试验，考察了不同润滑介质对摩擦系数及润滑特性的影响。结果表明：润滑介质可以有效降低摩擦副的摩擦系数；接触面上附加有4种润滑介质的摩擦系数平均值在滑动初期相差较小，随着摩擦时间的增加而呈现明显变化差异。运用牛顿动力学阐明了摩擦系数变化中前后瞬时波动的原因为接触表面高低不平的分布形态，同时指出材料的摩擦与润滑特性会根据润滑介质成分及与基体结合机理的不同而产生相应的变化。

A series of wear tests of friction pairs for steel GCr15/10 were conducted by a ball-disc friction and wear testing machine in different conditions of no lubrication, emulsion for cold finishing, water-based lubricant MoS2, phosphate-saponification coating and water-based polymer mixed liquid, and the influences of different lubricant mediums on friction coefficient and lubrication characteristic were investigated. The results show that the lubricant medium can effectively reduce the friction coefficient of friction pairs, and the average values of friction coefficient on the contact surface with four lubricant mediums have little difference in the early stage of sliding. With the increasing of friction time, the difference varies obviously. Therefore, the cause of instantaneous fluctuation before and after the variation of friction coefficient is explained as the uneven distribution of contact surface by Newtonian dynamics, and the friction and lubrication characteristics of material varying with the composition of lubricant medium and bonding mechanism of matrix are also pointed out.

基金项目：

上海工程技术大学研究生创新项目（17KY0501）；校企产学项目（(17)CL-003）

缪军（1989-），男，硕士研究生，E-mail：wdjun2010@163.com；通讯作者：龚红英（1974-），女，博士，教授，E-mail：ghyyw@163.com

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