Transactions of Materials and Heat Treatment

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

Authors： Miao Jun Gong Hongying Zhang Jie Jiang Tianliang Liao Zehuan Xu Zhimin

Unit： Shanghai University of Engineering Science Shanghai Dongfogel Cold Forging Co. Ltd.

KeyWords： friction pairs of steel GCr15/10 lubricant medium friction coefficient Newton dynamics lubrication characteristics

ClassificationCode：TH117.1

year,vol(issue):pagenumber：2018,43(7):170-175

Abstract：

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.

Funds：

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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