Influences of Grinding Mark Roughness and Cross Marks on Rolling Contact Fatigue Damage of Rail

被引：0

作者：

Ding H. ^{[1
]}

Guo S. ^{[1
]}

Zhou S. ^{[2
]}

Guo J. ^{[1
]}

Liu Q. ^{[1
]}

Wang W. ^{[1
]}

机构：

[1] Tribology Research Institute, State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu

[2] Institute of Metals and Chemistry, China Academy of Railway Sciences Research Group Co Ltd, Beijing

来源：

Mocaxue Xuebao/Tribology | 2021年 / 41卷 / 06期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Cross marks; Grinding marks roughness; Rail grinding; Rolling contact fatigue damage; Water medium;

D O I：

10.16078/j.tribology.2020247

中图分类号：

学科分类号：

摘要：

Grinding marks with different roughness levels (1, 4, 7 μm) and cross grinding marks were produced on the rail samples using abrasive papers. Then, rolling tests were conducted using those ground rail samples on the MMS-2A wheel/rail friction and wear machine. After that, the rolling contact fatigue of ground rail was analyzed. The results indicated that the roughness and damage of worn surfaces of ground rails were severer than those of unground rails. With the increase in the grinding roughness, the roughness and damage of worn rails showed a decrease trend. When the grinding roughness was 7 μm, branch cracks were generated, the depth of cracks was small. With the decrease in grinding roughness, branch cracks connected with each other, then net-like cracks were generated, the depth of cracks was increased. When the rails were ground with cross grinding marks, the roughness and rolling contact fatigue damage of worn rails were alleviated. The rolling damage of the ground rail with the −45°/70° and 45°/70° cross marks was milder than that of −20°/90° cross marks. Copyright ©2021 Tribology. All rights reserved.

引用

页码：813 / 820

页数：7

共 20 条

[1]

Zhu Y, Wang W J, Lewis R, Et al., A review on wear between railway wheels and rails under environmental conditions, Journal of Tribology, 141, 12, (2019)

[2]

Wang Yanpeng, Ding Haohao, Zou Qiang, Et al., Research progress on rolling contact fatigue of railway wheel treads, Surface Technology, 49, 5, pp. 120-128, (2020)

[3]

Zhong Wen, Dong Lin, Wang Yu, Et al., A comparative investigation between rolling contact fatigue and wear of high-speed and heavy-haul railway, Tribology, 32, 1, pp. 96-101, (2012)

[4]

Zhou Kun, Wang Wenjian, Liu Qiyue, Et al., Research progresses and prospect of rail grinding mechanism, China Mechanical Engineering, 30, 3, pp. 284-294, (2019)

[5]

Liu Yueming, Li Jianyong, Cai Yonglin, Et al., Current state and development trend of rail grinding technology, China Railway Science, 35, 4, pp. 29-37, (2014)

[6]

Jin Xuesong, Du Xing, Guo Jun, Et al., State of arts of research on rail grinding, Journal of Southwest Jiaotong University, 45, 1, pp. 1-11, (2010)

[7]

Magel E E, Kalousek J., The application of contact mechanics to rail profile design and rail grinding, Wear, 253, 1-2, pp. 308-316, (2002)

[8]

Zhang Wulin, Fan Xiaoqiang, Zhang Pengfei, Et al., Probing the effect of grinding stone strength on rail grinding behavior, Tribology, 40, 3, pp. 385-394, (2020)

[9]

Zhou Kun, Ding Haohao, Wang Ruixiang, Et al., Experimental investigation on material removal mechanism during rail grinding at different forward speeds, Tribology International, 143, (2020)

[10]

Jiang Xiaoyu, Jin Xuesong, Influence of liquid and micro-roughness between wheel and rail on the fatigue damage of contact surface, Chinese Journal of Mechanical Engineering, 40, 8, pp. 18-23, (2004)

← 1 2 →