Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
INFLUENCE OF ROUGHNESS AND SURFACE FINISH TO REDUCTION OF WEAR AND FRICTION
Submission Author:
Diana Roberta da Silva Medeiros , RN
Co-Authors:
Edália Azevedo de Faria, valdicleide mello, Salete Alves, Diana Roberta da Silva Medeiros
Presenter: Edália Azevedo de Faria
doi://10.26678/ABCM.COBEM2017.COB17-1356
Abstract
The roughness can significantly interfere with the tribological and mechanical properties of materials. It can influence on surface-liquid interaction, consequently, affects the lubrication. Rugged surfaces tend to reduce friction and wear. The paper aims to discuss the influence of roughness on the effect of a synthetic lubricant in the coefficient of friction reduction in rolling steels and to find the average range of roughness in which the coefficient of friction and wear are reduced. To verify this effect were carried tribological tests lubricated with based oil in tribometer HFRR (High-Frequency Reciprocating Rig), with contact alternate in the plane sphere configuration. The roughness was modified in the discs of the tribological pairs by surface finishing with different sandpaper (#36, #80, #220, #600 e polished). The wear was observed by scanning electron microscopy (SEM). Through the tribological tests was found that the polished samples obtained the worst results under the permanent regime. However, the samples with finishing to # 80 and # 220 showed good results in the reduction of the coefficient of friction
Keywords
Roughness, Wear, surface, friction
