Abstract
The surface texture, a major way to decrease friction and wear of the cylinder-piston ring friction pair, was conducted on cylinder-piston ring friction pair specimen using the orthogonal experimental design method to investigate the effect of different texture parameters (size, depth, shape, and surface density) of the friction and wear characteristics. Through simulation analysis, the texture parameters that affect the friction and wear characteristics are obtained. Using the evaluation method of friction coefficient and mass wear rate, the influence sequence and optimal values of texture parameters that affect friction and wear characteristics are obtained through range analysis. The results show that, after surface texture treatment under mixed lubrication conditions, the friction characteristics of the friction pair have changed and the friction coefficient and friction and wear rate have been significantly reduced. The results show that the triangular texture has a good antifriction effect, the texture depth is deepened, and the surface density and the size increases have a positive effect on the improvement of friction and wear. An ultra-depth microscope was used to observe the wear morphology of the friction and wear tests. The results show that the weakening of the third body wear by the texturing treatment and the maintenance of oil lubrication are the main reasons for reducing friction and wear.
Highlights
Hydraulic cylinder is a common hydraulic actuator that converts hydraulic energy into mechanical energy
Piston ring-sleeve friction pair has been under heavy load and high load for a long time; its friction performance and service life are important factors that affect the overall service life and reliability of the cylinder [2]
Texturing is widely used in cutting tools, internal combustion engine pistons, mechanical seals, and bearings [11,12,13,14,15,16,17]
Summary
Hydraulic cylinder is a common hydraulic actuator that converts hydraulic energy into mechanical energy. Current research shows that texture parameters mainly involve four parameters of texture size, depth, shape, and surface density. Etsion et al [19] studied the influence of different texture depths on oil film bearing capacity and antifriction performance. E research of Guzek et al [22,23,24] compared the effects of rectangular, elliptical, spherical, and other texture shapes on the bearing capacity and the antifriction properties of the oil film. Is paper uses simulation methods to determine the texture processing parameters and uses the orthogonal test method to study the order and optimal value of the texture processing methods of different sizes, depths, shapes, and surface densities on the hydraulic cylinderpiston ring friction pair. There is no reference for the texture processing parameter settings, and the parameter data has no simulation or theoretical basis. is paper uses simulation methods to determine the texture processing parameters and uses the orthogonal test method to study the order and optimal value of the texture processing methods of different sizes, depths, shapes, and surface densities on the hydraulic cylinderpiston ring friction pair. e wear morphology of the friction contact surface after texture treatment was analyzed by SEM electron microscope
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