Sliding Friction and Wear Properties of GCr15 Steel with Dimpled Texture
To study the effect of pit texture parameters on the friction and wear performance of GCr15 oil-lean sliding under larger load and higher speed,a PL100-30W laser marking machine is used to process a regular array of circular pits on the sur-face of high-carbon chromium bearing steel GCr15.Then,the friction and wear properties of textural samples and smooth samples under lean oil lubrication are tested on MMW-1A vertical universal friction and wear testing machine by means of thrust ring contact mode.Finally,a three-dimensional profiler was used to characterize the wear surface of the sample.The results show that the textured surface has a significant effect on the sliding friction and wear performance of GCr15 steel under oil-lean lubrication conditions;There is an optimal pit area ratios and depth-to-diameter ratio.When its value is 14.9% and 1:12,the friction coeffi-cient and wear losses are reduced by 26% and 64% respectively compared with the smooth sample;With the increase of the load,the friction coefficient of the textured sample and the smooth sample showed an upward trend,but the friction coefficient of the smooth sample increased faster than that of the textured sample.
GCr15 SteelSurface TextureStructure ParameterFriction and Wear
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