Title A twin-disc study of the role of the surface quality achieved by grinding on the wear resistance and rolling contact fatigue behavior of wheel/rail pairs
Author Cuervo, PA
Toro, A
Meza, JM
Santa, JF
Lewis, R
Affiliation Universidad Nacional de Colombia, Medellín, Colombia
MATyER. Instituto Tecnológico Metropolitano
University of Sheffield, UK
Publication Date 2022
Conference 12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, 4-7 September 2022, Melbourne, Victoria, Australia
Abstract The tribological behavior of twin-disc samples prepared under laboratory-controlled grinding operations was studied. A laboratory grinding device was designed and validated to produce similar results to those found in the field in terms of surface quality and presence of white etching layer (WEL). The test samples were evaluated in a twin-disc machine under dry and lubricated conditions. The results showed that the surface finishing parameters and the microstructure change greatly depending on the surface preparation procedure, and that such changes affect the tribological response of the samples. The wear rates of the tribological tests for the different rail surface qualities showed a reduction of 47.4% for the lubricated tests and 7.3% for the dry tests when the surfaces of the rail specimens were finished by grinding. This only applied when the WEL thickness was less than 4 um.
File - click thumbnail to download
CM 2022_Cuervo2
Physical Description 10p. ; PDF
Subjects Wear
Friction
Lubrication
Grinding (railway track)
Test
Railway track
Rail transport
Rolling contact
Location ARRB library
Category Rail Knowledge Bank Index Infrastructure Wheel/rail interaction
Rail Knowledge Bank Index Infrastructure Track