Testing of HSH® rails in high-speed tracks to minimise rail damage
Testing of HSH® rails in high-speed tracks to minimise rail damage
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DOI：
10.1016/j.wear.2004.03.050
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发表时间：
2005-03
期刊：
影响因子：
5
通讯作者：
R. Heyder;G. Girsch
中科院分区：
文献类型：
--
作者：
R. Heyder;G. Girsch
随着高速交通的开始，轮轨界面的应力显着增加。磨损，特别是滚动接触疲劳（RCF）缺陷变得更加突出，成为非常重要的成本因素。理论上的考虑导致了这样的假设：头部硬化钢轨比具有轧制硬度的钢轨具有更好的抗 RCF 缺陷的能力 [F.P.波因特纳，F.N. Frank, Rad/Schiene Kontakt：Rollkontaktermüdung an Schienen – Werkstoff oder Beanspruchung？艾森铁路工程师，卷。 50，Tetzlaff-Verlag，德国汉堡，1999 年，第 22-26 页]。为了调查和验证这一理论评估，奥钢联 Schienen GmbH 和德国铁路 (DB AG) 在一个联合项目中制定了轨道测试计划。在DB AG高速线路的多条试验轨道中，对800（220）、900A（260）和HSH®（350HT）钢轨的损伤行为进行了研究和比较。此外，还进行了磨削测试，以找到适合这些不同钢轨等级的适当维护策略。经过3年的调查，结果表明，三个钢轨等级的钢轨损坏行为存在显着差异。本文表明，使用 HSH® 钢轨绝对是有利的，因为它具有更好的钢轨损坏性能。结合优化的维护策略，可以延长钢轨的使用寿命并显着降低生命周期成本。
With the beginning of high-speed traffic, the stresses in the wheel–rail interface raised significantly. Wear and especially rolling contact fatigue (RCF) defects became more prominent and very important factors of costs. Theoretical considerations led to the assumption that head hardened rails have a better resistance against RCF defects than rails with as-rolled hardness [F.P. Pointner, F.N. Frank, Rad/Schiene Kontakt: Rollkontaktermüdung an Schienen – Werkstoff oder Beanspruchung? Eisenbahn Ingenieur, vol. 50, Tetzlaff-Verlag, Hamburg, Germany, 1999, pp. 22–26]. To investigate and verify this theoretical evaluation, voestalpine Schienen GmbH and German Railway (DB AG) set a track test program in a joint project. In several trial tracks in high-speed lines of DB AG, the damage behaviour of rails of the grades 800 (220), 900A (260) and HSH®(350HT) was investigated and compared. Furthermore, grinding tests were done to find an appropriate maintenance strategy for these different rail grades. After 3 years time of investigation, it was demonstrated that the rail damage behaviour of the three rail grades was significantly different. It is shown in this article that the use HSH®rails is definitely advantageous because of its better rail damage behaviour. In combination with an optimised maintenance strategy, the service life of rails can be increased and life cycle costs decreased significantly.