Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
INVESTIGATION OF THE INFLUENCE OF LOADING ON THE WEAR OF A PERLITIC RAIL
Submission Author:
Vinicius Silva dos Reis , PA
Co-Authors:
Vinicius Silva dos Reis, Eric Espíndola, Aélcio Santos, Mateus José Araújo de Souza, Carlos Vinícius de Paes Santos, JOSÉ MARIA DO VALE QUARESMA
Presenter: Eric Espíndola
doi://10.26678/ABCM.COBEM2021.COB2021-2116
Abstract
Brazil still does not exploit this means of rail transport satisfactorily. Thus, it is interesting to study this type of system and its mechanical characteristics. This work aimed to characterize a pearlitic matrix rail as to the parameters of hardness, wear resistance and roughness. The rail was subjected to a pin-on-disk wear test in two loading conditions (50 and 100 N) and after the end of these tests the surfaces were analyzed via SEM, in addition to the roughness parameters in a 3D optical profilometer. The variation of loads altered wear-related properties (hardness, mass loss, wear rate, and coefficient), since there was an increase in hardness when compared to the surface hardness of the rail in a proportional manner to the applied loads. In turn, the wear coefficient also suffered variations associated with the loads, as did the roughness parameters. As for the average coefficient of friction, no significant changes occurred due to the variation in loads. The analysis of the worn surface of all conditions revealed that the wear was moderate and of the oxidative type. Finally, the effects of loading enabled the understanding of the wear mechanisms in the tribological interactions of the rails.
Keywords
wheel-rail contact, Wear, Roughness, Pearlitic steel
