Study on Effect of Parameters of Grinding Stone on Rail Temperature Fieldduring Rail Grinding

被引：0
|
作者：
Zhang Z. [1 ]
Guo J. [1 ]
Liu Q. [1 ]
Wang W. [1 ]
机构：
[1] Tribology Research Institute, Southwest Jiaotong University, Chengdu
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2020年 / 42卷 / 11期
关键词：
Granularities of grinding stone; Grinding power; Rail grinding; Temperature field;
D O I：
10.3969/j.issn.1001-8360.2020.11.016
中图分类号：
学科分类号：
摘要：
Based on the grinding force calculation formula of a single abrasive grain, the grinding power of grinding stone with different particle size during rail grinding was calculated using a numerical integration method. Then, with the simplification of the grinding stone as a moving heat source acting on the rail, the heat transfer numerical analysis was carried out on the grinding process. The effect of feed depth, rotating speed and granularities of the grinding stone on the grinding temperature field of the rail was explored using a finite element method. The results show that the rail grinding temperature increases with the increase of the feed depth and rotating speed of the grinding stone. The increase of granularities of grinding stone causes the increase of grain number and the decrease of half cone angle of the grains. Thus, the rail grinding temperature first increases and then decreases with the increase of the granularities of the grinding stone. The studying results provide an important theoretical guidance for the selection of grinding stones with appropriate granularities. © 2020, Department of Journal of the China Railway Society. All right reserved.
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页码：118 / 123
页数：5
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