Improving rail wear and RCF performance using laser cladding

被引：87

作者：

Lewis, S. R. ^{[1
]}

Fretwell-Smith, S. ^{[2
]}

Goodwin, P. S. ^{[3
,5
]}

Smith, L. ^{[2
]}

Lewis, R. ^{[1
]}

Aslam, M. ^{[2
]}

Fletcher, D. I. ^{[1
]}

Murray, K. ^{[4
]}

Lambert, R. ^{[2
]}

机构：

[1] Univ Sheffield, Dept Mech Engn, Sheffield S10 2TN, S Yorkshire, England

[2] Tata Steel Rail Technol, Rotherham, S Yorkshire, England

[3] Laser Cladding Technol Ltd, Worksop, England

[4] Sandvik Osprey Ltd, Neath, Wales

[5] TWI Technol Ctr Yorkshire, Rotherham, S Yorkshire, England

来源：

WEAR | 2016年 / 366卷

基金：

“创新英国”项目;

关键词：

Laser cladding; Wear; RCF; Rolling-sliding; Eddy current; WHEEL/RAIL MATERIALS; CONTACT;

D O I：

10.1016/j.wear.2016.05.011

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Laser cladding has been considered as a method for improving the wear and RCF performance of standard grade rail. This paper presents results of small scale tests carried out to assess the wear and RCF performance of rail which had been laser clad. Using the laser cladding process premium metals can be deposited on to the working surface of standard rail with the aim of enhancing the wear and RCF life of the rail. Various laser clad samples were tested using a twin-disc method. The candidate metals were clad on to standard R260 grade rail discs and were tested against a disc of standard wheel material. During the tests, wear rates and RCF initiation were monitored and compared to those of a standard rail disc. Six candidate cladding materials were chosen for this test: A multi-phase Manganese Steel Variant (MMV), Martensitic Stainless Steel (MSS), TWIP Steel, NiCrBSi, Stellite 12 and Stellite 6. The MSS, Stellite 6, and Stellite 12 samples showed reduced wear rates relative to the standard R260 Grade rail discs, and also produced a reduction in wheel steel wear. The RCF initiation resistance of all of the candidate materials was superior compared to the R260 Grade material. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：268 / 278

页数：11

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