中国铁道科学2025，Vol.46Issue(5)：80-87,8.DOI:10.3969/j.issn.1001-4632.2025.05.07
磨削表面形貌特征对钢轨摩擦学性能的影响
Effect of Rail Grinding Surface Morphology on Tribological Properties
摘要
Abstract
The surface morphology characteristics of steel rail components directly influence the tribological performance of contacting parts.However,in rail grinding and maintenance,the effect mechanism of surface morphologies generated by abrasive belt grinding on the in-service tribological performance of steel rails remains unclear.To systematically investigate the tribological properties of ground steel rails with varying texture parameters under dry friction conditions,a micro-element wear simulation model for wheel-rail contact was established using structured modeling combined with finite element simulation,based on Hertz contact theory and the Archard wear model.Steel rail specimens with different texture spacings,orientations,and depths were prepared via grinding processes,and friction and wear tests were conducted using a linear reciprocating dry friction sliding test method with ball-on-disc configuration.The results demonstrate that the spacing,orientation,and depth of surface textures generated by grinding significantly influence the friction coefficient and wear rate of steel rails.By optimizing grinding process parameters,such as reducing the size of abrasive belt grit,increasing the grinding twist angle,and increasing grinding feed rate,surface textures with larger spacing,larger angles,and greater depths can be formed within the parameter ranges of 0.06-0.14 mm spacing,0°-60° orientation,and 0.02-0.08 mm depth,effectively enhancing the tribological performance of steel rails and thereby extending their service life.关键词
表面形貌/摩擦/滑动磨损/纹理/磨削/钢轨Key words
Surface morphology/Friction/Sliding wear/Texture/Grinding/Rail分类
交通运输引用本文复制引用
刘月明,杨策,邓国念..磨削表面形貌特征对钢轨摩擦学性能的影响[J].中国铁道科学,2025,46(5):80-87,8.基金项目
国家自然科学基金资助项目(52275399) （52275399）
