Influence of Type of Grinding Stone on Rail Grinding Efficiency

Kanematsu, Yoshikazu; Satoh, Yukio

doi:10.2219/rtriqr.52.97

Cited by 20 publications

(10 citation statements)

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“…This layer is composed of fresh martensite formed due to localized heating and fast cooling during the grinding procedures, which has been previously reported by Chandrasekar et al [18] and Kanematsu et al [19]. The detail shown in figure 10b reveals several cracks in the white layer.…”

Section: Rail Grinding Testssupporting

confidence: 68%

Correlations between rail wear rates and operating conditions in a commercial railroad

Santa

Toro

Lewis

2016

Tribology International

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Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/) eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. 1 CORRELATIONS BETWEEN RAIL WEAR RATES AND OPERATING CONDITIONS IN ABSTRACTThe rail wear rates per traffic unit (mm/MTon) in the curves of a 4.5 km-long commercial line over a period of 9 years were measured and related to specific operation conditions. The rail corrugation was analysed using a Corrugation Analysis Trolley (CAT) and visual inspection was carried out in order to identify the defects in the railroad. Since Rolling Contact Fatigue (RCF), artificial abrasion and corrugation were found to be the most important issues the grinding procedures used during maintenance of the railroad were evaluated to assess their effectiveness on removing the defects from the rail surface. The results showed that the wear rates in the studied railroad were several times higher than those typically found in the literature, mainly as a consequence of inappropriate grinding regimes. White layer formation and only partial removal of cracks emerged as the most relevant drawbacks of rail grinding procedures.

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Section: Rail Grinding Testssupporting

confidence: 68%

Correlations between rail wear rates and operating conditions in a commercial railroad

Santa

Toro

Lewis

2016

Tribology International

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“…The grinding procedures effectively change the microstructure of the subsurface since fresh martensite is formed, and consequently the fatigue response of the rails is presumably affected. In particular, micro-cracks formed at the surface as a consequence of martensitic transformation can act as nucleation sites for fatigue cracks, whose growth notably reduces the fatigue life of the rails [1,2,4,7]. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In such a railway system, rail maintenance procedures change both the sub-surface microstructure and the surface roughness, influence the wear performance of the rail and preserve its profile. It has been shown that after the grinding procedure a hard layer composed of untempered martensite can be formed at the surface due to localized heating and fast cooling, as reported by Chandrasekar et al [1], Kanematsu et al [2] and Zapata et al [3]. Also, plastic deformation plays a role in hardening of the sub-surface, which in many cases can reach hardness values up to 400 HV or more [4].…”

Section: Introductionmentioning

confidence: 99%

Correlations between wear mechanisms and rail grinding operations in a commercial railroad

Cuervo

Santa

Toro

2015

Tribology International

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“…It is a worldwide consensus that rail grinding plays a vital role in the maintenance of railway tracks, and it has become an important method for the maintenance of rails. 5–9…”

Section: Introductionmentioning

confidence: 99%

“…It is a worldwide consensus that rail grinding plays a vital role in the maintenance of railway tracks, and it has become an important method for the maintenance of rails. [5][6][7][8][9] Recently, many studies on rail grinding have been carried out throughout the world. Satoh and Iwafuchi 10 studied the effectiveness of rail grinding to predict RCF damage and their experimental results showed that rail grinding was an effective method to reduce RCF.…”

Section: Introductionmentioning

confidence: 99%

Optimal design of rail grinding patterns based on a rail grinding target profile

Lin

Guo

Wang

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part F:

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Based on the grinding target profile of the rail and the grinding capacity of a single grinding stone, a numerical calculation method for rail grinding patterns that includes grinding angle and grinding power of each grinding stone of the GMC96 rail grinding train was designed and established. By means of this numerical method, the grinding pattern of each grinding pass was optimized and the rail head profile after grinding was calculated. Furthermore, a method for the evaluation of the grinding quality is provided. The results indicate that in multipass rail grinding, a sequence of grinding passes – where the greatest grinding effort is applied on the earlier passes, with the last pass applying reducing levels of grinding effort – produces the highest conformance to the target grinding profile. For example, when rail grinding is planned for two passes, applying 60% of the total grinding effort on the first pass and 40% on the second pass decreases the final grinding error by 7.3%.

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Influence of Type of Grinding Stone on Rail Grinding Efficiency

Cited by 20 publications

References 0 publications

Correlations between rail wear rates and operating conditions in a commercial railroad

Correlations between rail wear rates and operating conditions in a commercial railroad

Correlations between wear mechanisms and rail grinding operations in a commercial railroad

Optimal design of rail grinding patterns based on a rail grinding target profile

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