| XIE Yong,SONG Wen-tao,CHEN Wen-gang,LIU De-chun,CHEN Long.Effect of Triangular Surface Micro-texture on Tribological Properties of 304 Steel[J],50(4):225-234 |
| Effect of Triangular Surface Micro-texture on Tribological Properties of 304 Steel |
| Received:March 07, 2020 Revised:June 01, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2021.04.022 |
| KeyWord:Triangular micro-texture 304 steel friction and wear finite element analysis rotation diameter |
| Author | Institution |
| XIE Yong |
School of Mechanical and Transportation, Southwest Forestry University, Kunming , China |
| SONG Wen-tao |
School of Mechanical and Transportation, Southwest Forestry University, Kunming , China |
| CHEN Wen-gang |
School of Mechanical and Transportation, Southwest Forestry University, Kunming , China |
| LIU De-chun |
School of Mechanical and Transportation, Southwest Forestry University, Kunming , China |
| CHEN Long |
School of Mechanical and Transportation, Southwest Forestry University, Kunming , China |
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| Abstract: |
| In order to study the anti-friction and anti-wear properties of 304 steel with surface triangular micro-texture, broaden the application range of austenitic stainless steel, and a theoretical basis is provided for improving the wear resistance of 304 steel. Laser processing technology is used to prepare triangular micro-texture on the surface of 304 steel. The length of the bottom is 200 μm and the height is 200 μm. The finite element ANSYS software is used to simulate and analyze the oil film pressure and other parameters. MRTR-1 multifunctional friction and wear tester is used to test the friction properties of surface textured 304 steel, and the friction and wear of the triangular micro-texture at different diameters (15, 25, 35 mm) and different speeds (100, 200, 300 r/min) is investigated. Scanning electron microscope (SEM) is used to analyze the microstructure and morphology of the working surface. The existence of triangular micro-texture increases the pressure inside the oil film, the rotation speed can get greater, the pressure of oil film can get greater too, and the friction coefficient decreases significantly. The experimental results show that compared with the untextured surface, the average friction coefficient of the triangular texture is significantly reduced, with a maximum decrease of 14.89%. The friction and wear performance of 304 steel with a triangular texture on the laser-machined surface is excellent, and its anti-friction and wear resistance can be better demonstrated under the conditions of 35 mm diameter and 300 r/min rotation speed. Its main function mechanism is to supplement the lubricating liquid between the contact surfaces timely and effectively, provide a “secondary lubrication” effect, and establish a continuous oil film between the frictional contact interfaces to reduce friction and wear. |
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