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Study of surface damage in the wheel/rail tribological system

Grant number: 12/50177-1
Support type:Research Grants - Research Partnership for Technological Innovation - PITE
Duration: May 01, 2013 - April 30, 2017
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Transformation Metallurgy
Principal researcher:Paulo Roberto Mei
Grantee:Paulo Roberto Mei
Home Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Company: MWL Brasil Rodas e Eixos Ltda
City: Campinas


MWL Brazil and Unicamp developed microalloyed railway wheels with improved mechanical properties compared to the currently used in the "Heavy Haul". However, for the insertion of this new product in the market an approval is required from the Association of American Railroads (AAR), the international regulatory agency, which requests that the tests should be performed in educational institutions. Once approved on the new Class D of the AAR, the railway wheels could be sold to MWL Brazil customers such as: Canadian Pacific, Pacific National, Union Pacific, BNSF, CSX, Vale and BHP MRS, among others. In this project, proposed by researchers from Unicamp, USP and MWL will be created two laboratories, at USP and Unicamp, for rolling contact fatigue testing. These laboratories will be equipped with four testing machines each, designed by the researchers of the group and built by companies of the technology park of São Paulo State. In this laboratories will be developed a test methodology for contact fatigue and wear resistance, in order to obtain reliable correlations between laboratory and field results. Although these laboratories are being built to meet the requirements of the rail industry, in the future they may also meet other companies in the country interested on this type of test. (AU)

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Filed patent(s) as a result of this research project

MÁQUINA DE ANÁLISE DE DESGASTE DE CONTATO POR ROLAMENTO E DESLIZAMENTO BR1020170275914 - MWL Brasil Rodas & Eixos Ltda ; Universidade Estadual de Campinas (UNICAMP) . Solange Tamara da Fonseca; Paulo Roberto Mei; Andrei Bavaresco Rezende; Gabriel Araijo Amorim; Domingos José Minicucci - December 2017, 20