Thermal model and temperature field in rail grinding process based on a moving heat source

Abstract A three-dimensional thermal model that the grinding wheels are simplified as a moving heat source in the rail grinding process was established and used to explore the effect of grinding parameters on the temperature field of ground rail. The results indicate that the highest temperature of ground rail increases with an increase in the grinding power. The increase of grinding surface width and moving velocity causes a fall of ground rail temperature. It should be noted that the temperature of ground rail would continue to rise when the first car with 12 grinding wheels passes through the rail surface. However, the temperature does not increase when the second car passes through. Compared with distributing on the same grinding surfaces, two grinding wheels distributing on two adjacent grinding surfaces would lower grinding rail temperature. The results are beneficial to improve the reasonable arrangement of grinding wheels in the rail grinding process.

[1]  E. Uhlmann,et al.  Influence of rail grinding process parameters on rail surface roughness and surface layer hardness , 2016 .

[2]  S. Malkin,et al.  Temperatures and Energy Partition for Grinding with Vitrified CBN Wheels , 1999 .

[3]  H. Abu-Mulaweh,et al.  Prediction of the Temperature in a Fin Cooled by Natural Convection and Radiation , 2006 .

[4]  Alejandro Toro,et al.  Correlations between wear mechanisms and rail grinding operations in a commercial railroad , 2015 .

[5]  J. C. Jaeger.  Moving sources of heat and the temperature at sliding contacts , 1943, Journal and proceedings of the Royal Society of New South Wales.

[6]  B. Sadeghi,et al.  Thermal analysis of minimum quantity lubrication-MQL grinding process , 2012 .

[7]  W. B. Rowe,et al.  A Simplified Approach to Control of Thermal Damage in Grinding , 1996 .

[8]  Minhao Zhu,et al.  Analysis on the effects of rotational speed of grinding stone on removal behavior of rail material , 2015 .

[9]  Liang Gao,et al.  Dynamics Simulation on Asymmetrical Rail Grinding in Railway Curve , 2007 .

[10]  Meir Shillor,et al.  Thermal analysis of the grinding process , 2004 .

[11]  R. D. Zerkle,et al.  Thermal Analysis of the Grinding Process , 1970 .

[12]  José Antonio Sánchez,et al.  Identification of heat partition in grinding related to process parameters, using the inverse heat flux conduction model , 2014 .

[13]  Henri Champliaud,et al.  Experimental and finite element analysis of temperature and energy partition to the workpiece while grinding with a flexible robot , 2013 .

[14]  W. B. Rowe,et al.  Principles of Modern Grinding Technology , 2009 .

[15]  Hédi Hamdi,et al.  Temperature measurement and heat flux characterization in grinding using thermography , 2008 .

[16]  Jingzhou Zhang,et al.  Investigation for convective heat transfer on grinding work-piece surface subjected to an impinging jet , 2013 .

[17]  T.M.A. Maksoud,et al.  Heat transfer model for creep-feed grinding , 2005 .

[18]  Tien-Chien Jen,et al.  Coupled heat transfer to workpiece, wheel and fluid in grinding, and the occurrence of workpiece burn , 1991 .

[19]  Athanasios G. Mamalis,et al.  Thermal Modelling of Surface Grinding Using Implicit Finite Element Techniques , 2003 .

[20]  Michaël J.M.M. Steenbergen,et al.  Rolling contact fatigue in relation to rail grinding , 2016 .

[21]  Eric Magel,et al.  The application of contact mechanics to rail profile design and rail grinding , 2002 .

[22]  Xipeng Xu,et al.  Analysis of temperature distributions in surface grinding with intermittent wheels , 2014 .