Effect of surface texture on friction and wear properties of slipper pair in a radial piston pump
The bearing capacity of high pressure and large displacement radial piston pump is large,and the slipper pair is one of the key factors affecting the friction characteristics of the pump.It is of great significance to study the influence of texture on the friction characteristics of slipper pair,and improve the lubrication and friction characteristics of slipper pair of high pressure and large displacement radial piston pump.Therefore,taking the slipper pair of high-pressure and large-displacement radial piston pump as the research object,the wear amount of slipper with different shapes,area ratios and depth-diameter ratios was calculated.Firstly,three kinds of texture surfaces,square,circle and triangle,were selected.After defining the texture depth,shape and area ratio,the influencing factors of texture morphology of sipper and orthogonal experimental samples were established.Then,the friction and wear tests of 10 groups of sample data were carried out,taking friction coefficient and wear amount as dependent variables,the test results of multi-factor variance analysis were obtained.Finally,according to the factor parameters with little significance,the research parameters were determined,and the friction simulation and specimen test of textured surfaces with different shapes were carried out.The research results show that the area ratio of texture has the greatest influence on friction coefficient and wear amount.The friction coefficient of triangular textured surface with area ratio of 9.66%and depth of 120 μm is the smallest,and it is 16%lower than that of non-textured surface.The sorting of the wear amount of three kinds of textured surfaces obtained from simulation are consistent with the experimental results.The square textured surface with an area ratio of 9.66%and a depth of 120 μm has the best antifriction effect,with the smallest wear,it is 35%lower than that of the non-textured surface,and the friction coefficient is 15.86%lower than that of the non-textured surface.This research results provides reference for the design of the slipper pair of high-pressure large displacement radial piston pumps,the improvement of friction and wear characteristics of the slipper pair,and the extension of the service life of the piston pump.
high pressure and large displacement radial piston pumpfriction characteristics of slipper pairsurface texture modelfriction and wear propertieslubrication characteristics of slipper pairorthogonal testmultiple factor significance analysis
万方数据
维普
