摘要
针对我国高速铁路轮轨关系中钢轨磨耗小、车轮存在凹磨和多边形磨耗、车轮镟修周期短和维护成本高等问题,从轮轨硬度匹配角度,开展轮轨材质硬度摩擦磨损小比例试验、现场轮轨磨损规律测试试验、轮轨磨耗仿真计算等研究,对轮轨硬度匹配指标和方案进行探讨。研究结果表明,轮轨硬度比控制在1.00∶1.00以上,可有效减小车轮磨耗;提高车轮硬度,可抑制和减缓多边形磨耗的产生。建议适当提高我国应用车轮的硬度,推广我国自主研发的强韧性兼备高硬度车轮,延长车轮镟修周期,节约养护维修成本。
To solve problems of high speed wheel-rail interaction, such as less rail wear, concave wear and polygon wear of wheels, short cycle of wheel lathing and high maintenance cost, the paper, from the wheel-rail hardness matching point-of-view, discusses the indicators of hardness matching and different matching plans based on tests and studies, e.g. small-scale test of friction wear of wheel-rail material hardness, test of wear law of on-site wheel-rail, simulating calculation of wheel-rail wear, etc. The results show that the wheel wear can be efficiently reduced if the wheel-rail hardness ratio is controlled over 1.00： 1.00; Wheels with improved hardness and sustained toughness may avoid or mitigate polygon wear. The paper also suggest that the hardness of existing wheels shall be improved appropriately, independently-developed wheels with better hardness and toughness shall be promoted, and the lathing cycle shall be extended to save maintenance cost.
出处
《中国铁路》
2018年第1期7-14,共8页
China Railway
基金
中国铁路总公司科技研究开发计划项目(2016G008-B
J2015G009)
国家重点基础研究发展计划(973计划)(2015CB654805)
关键词
高速铁路
轮轨关系
硬度匹配
摩擦磨损
轮轨磨耗
high speed railway
wheel-rail interaction
hardness matching
friction wear
wheel-rail wear
