Study on Friction and Wear Performance of Bionic Coupling Surface Moving Pair of 45 Steel

Abstract

From the perspective of wear-resistant biological prototypes, the three non-smooth appearances of pits, stripes and grids are simplified abstractly. The shape, structure and material are organically coupled through reasonable mosaic and distribution. It was “replicated” on the surface of the 45 steel by using mechanical and laser processing methods. The wear test was conducted by using a microscopic wear tester. According to the test results, the wear mechanism of the biomimetic coupling morphology and the roles of the three coupling elements in form, structure and material in the wear resistance were analyzed. In this experimental condition, the wear resistance of the mesh shape is best under the same conditions; The coupling element of material plays the minimum of 3.52% in the wear resistance and the maximum will not exceed 64.2%; The pitch is between 0.65mm and 1.1mm. In the meanwhile, the wear resistance of the machined sample is higher than that of the laser processed smooth sample; When the distance is more than 1.2mm, the abrasion resistance of the laser processed sample is higher than that of the mechanical processing sample. This study has important reference value for the reasonable selection of coupling elements and coupling methods to improve the wear resistance of metal surfaces.