中国铁道科学2017，Vol.38Issue(4)：1-7,7.DOI:10.3969/j.issn.1001-4632.2017.04.01
高速铁路轮轨硬度匹配试验研究
Experimental Study on Hardness Matching of Wheel and Rail Materials for High Speed Railway
摘要
Abstract
The wheel wear volume is relatively high in China's high-speed railway.To solve this problem,the research and application status of wheel-rail hardness matching relationship of high speed railway at home and abroad was analyzed.Rolling-sliding friction tests of three kinds of wheel samples with different hardness over U74,U71MnG and U75VG rail samples were also done in laboratory.The wheel wear,deformation and contact fatigue damage behavior of wheel/rail samples with various hardness ratios were compared and analyzed.Results show that the appropriate improvement of wheel hardness,that is,the improvement of wheel-to-rail hardness ratio has become an international practice to alleviate the problem of larger wheel wear.In the 9 groups of wheel/rail wear tests,when the wheel-to-rail hardness ratio is in the range of 0.95 ∶ 1～1.15 ∶ 1,the total wear of wheel/rail is relatively low.When the wheel/rail hardness ratio is greater than 1 ∶ 1,the wheel/rail deformation and surface contact fatigue damage are lighter.When the wheel/rail hardness ratio is 1.15 ∶ 1,the total wear amount of wheel-rail is the smallest,and the contact fatigue damage is also the lightest.With the increase of wheel hardness,not only the wheel wear is reduced,but also its resistance to deformation is significantly increased.It is suggested that the hardness ratio of EMU wheel and U71MnG rail should be controlled over 1 ∶ 1 to solve the problem of larger wheel wear of high speed railway in China.关键词
高速铁路/轮轨关系/磨耗/车轮/钢轨/硬度匹配Key words
High speed railway/Wheel-rail relationship/Wear/Wheel/Rail/Hardness matching分类
交通工程引用本文复制引用
张银花,周韶博,周清跃,刘丰收,李闯,张关震..高速铁路轮轨硬度匹配试验研究[J].中国铁道科学,2017,38(4):1-7,7.基金项目
中国铁路总公司科技研究开发计划项目(2016G008-B) （2016G008-B）
