EFFECTS OF POINT GRINDING SURFACE TEXTURE ON CONTACT AND WEAR CHARACTERISTICS UNDER DRY SLIDING CONDITION

Caixia Chao, Yan Wang and Shichao Xiu
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Caixia Chao: School of Mechanical Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, P. R. China
Yan Wang: School of Mechanical Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, P. R. China
Shichao Xiu: ��School of Mechanical Engineering and Automation, Northeastern University, Shenyang, Liaoning 110819, P. R. China

Surface Review and Letters (SRL), 2022, vol. 29, issue 09, 1-9

Abstract: The main objective of this work is to study the effects of surface texture direction on contact and wear characteristics of point grinding parts under dry sliding contact. This study provided a method to obtain the surface with good contact characteristics and wear resistance under certain working conditions. The point grinding surface texture model, the contour support length model considering surface texture, and the fractal contact model of the cylindrical surface were built. The measuring experiment was carried out using TR300 roughness shape measuring instrument and the tribological experiment was carried out using HSR-2M high-speed reciprocating friction and wear tester. The results showed that the surface texture direction had an effect on the contour support length ratio, the contact and wear characteristics of parts. When the surface texture direction angle was 30∘, the average friction coefficient was the smallest, the supporting performance and wear resistance of parts were the best; for surfaces with 30∘ and 60∘ texture, the fluctuation of the friction coefficients was smaller, the wear uniformity was better; when the load was small, the abrasion loss of point grinding parts will decrease with increase in the direction angle of surface texture. The results can help to choose appropriate processing method and machining parameters to obtain appropriate surface.

Keywords: Point grinding; surface texture direction; contact characteristics; friction coefficient; abrasion losses (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0218625X22501153

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