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

The tribological behavior of wheel and rail material 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 is only applied when the WEL thickness was less than 4 μm.

• Record URL:
  • https://doi.org/10.1177/09544097231184000
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09544097
• Supplemental Notes:
  • © IMechE 2023.
• Authors:
  • Cuervo, PA
  • 0000-0003-3647-2096
  • Toro, A
  • Meza, JM
  • Santa, JF
  • Lewis, R
• Publication Date: 2024-4

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 394-405
• Serial:
  • Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
  • Volume: 238
  • Issue Number: 4
  • Publisher: Sage Publications Limited
  • ISSN: 0954-4097
  • EISSN: 2041-3017
  • Serial URL: http://pif.sagepub.com/content/current

Subject/Index Terms

• TRT Terms: Disc brakes; Rail grinding; Railroad materials; Railroad rails; Tribology; Wear
• Subject Areas: Design; Maintenance and Preservation; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 01911453
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 11 2024 3:56PM