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载荷对Cr4Mo4V轴承钢高温干摩擦特性的影响 

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  • 1. 洛阳轴承研究所有限公司, 河南 洛阳 471039;2. 河南科技大学高端轴承摩擦学技术与应用国家地方联合工程实验室, 河南 洛阳 471023;3. 河南工业大学材料科学与工程学院, 河南 郑州 450001
王 培(1986-),博士,讲师,主要从事粉末冶金及材料摩擦磨损研究,E-mail:wangpei@haut.edu.cn

收稿日期: 2022-07-24

  修回日期: 2022-08-15

  录用日期: 2022-09-17

  网络出版日期: 2023-07-25

基金资助

河南省高性能轴承技术重点实验室开放课题(2020ZCKF03)资助;

Effect of Load on High Temperature Dry Friction Characteristics of Cr4Mo4V Bearing Steel

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  • 1. Luoyang Bearing Research Institute Co.,Ltd., Luoyang 471039, China;2. National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology,Luoyang 471023, China; 3. School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China

Received date: 2022-07-24

  Revised date: 2022-08-15

  Accepted date: 2022-09-17

  Online published: 2023-07-25

摘要

为探究瞬时干摩擦条件下Cr4Mo4V 轴承钢的磨损机理,采用氮化硅球与Cr4Mo4V 钢盘摩擦副,探究了在环境温度300 ℃、速度0.3 m/s、滑动干摩擦条件下,载荷变化对Cr4Mo4V 轴承钢摩擦特性的影响规律。 结果表明:载荷在1.2~2.4 GPa 范围内增加时,Cr4Mo4V 轴承钢的摩擦系数从0.89 降低为0.42,但磨损率从2.05×10-6 mm3/(N·m)增加到2.68×10-6 mm3/(N·m)。 磨损表面发生氧化反应,不同载荷条件下产生的氧化物类型不同。Cr4Mo4V 钢的磨损机制主要为氧化磨损及黏着磨损。

本文引用格式

刘 建, 郭 浩, 王 浩, 赵孟晨, 王 培 . 载荷对Cr4Mo4V轴承钢高温干摩擦特性的影响 [J]. 材料保护, 2023 , 56(1) : 44 -49 . DOI: 10.16577/j.issn.1001-1560.2023.0007

Abstract

In order to explore the wear mechanism of Cr4Mo4V bearing steel under the condition of instantaneous dry friction, the silicon nitride ball and Cr4Mo4V steel disc friction pair were used to explore the influence of load changes on the friction characteristics of Cr4Mo4V bearing steel under the conditions of an ambient temperature of 300 ℃, a speed of 0.3 m/s and a sliding dry friction. Results showed that when the load increased in the range of 1.2~2.4 GPa,the friction coefficient of Cr4Mo4V bearing steel decreased from 0.89 to 0.42,while the wear rate increased from 2.05×10-6 mm3/(N·m) to 2.68×10-6 mm3/(N·m). Oxidation reaction occurred on the worn surface, and the types of oxides produced under different load conditions were different. Besides, the main wear mechanisms of Cr4Mo4V were oxidation wear and adhesion wear.

参考文献

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