凹坑织构对GCr15贫油滑动摩擦磨损性能影响
Sliding Friction and Wear Properties of GCr15 Steel with Dimpled Texture
张义民 1侯福顺 1龙日升 1王一冰1
作者信息
- 1. 沈阳化工大学装备可靠性研究所,辽宁 沈阳 110142
- 折叠
摘要
为研究在较大载荷和较高转速下,凹坑织构参数对GCr15贫油滑动摩擦磨损性能的影响,这里采用PL100-30W型激光打标机,在高碳铬轴承钢GCr15表面加工出规则排列的圆形凹坑阵列,然后利用MMW-1A型立式万能摩擦磨损试验机,对织构试样和光滑试样进行了贫油润滑条件下的摩擦磨损性能试验.最后,使用三维形貌仪对试样的磨损表面进行了表征.结果表明:凹坑织构表面对GCr15钢贫油润滑条件下的滑动摩擦磨损性能影响显著;存在最优的凹坑面积率和深径比,当其值为14.9%和1:12时,其摩擦系数和磨损量相比光滑试样分别降低了26%和64%;随着载荷的增大,织构试样与光滑试样的摩擦系数均呈上升趋势,但光滑试样的摩擦系数增长速率大于织构试样.
Abstract
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.
关键词
GCr15钢/表面织构/结构参数/摩擦磨损Key words
GCr15 Steel/Surface Texture/Structure Parameter/Friction and Wear引用本文复制引用
基金项目
辽宁省自然科学基金面上项目(2019-MS-258)
辽宁省教育厅项目(LJ2019003)
国家自然科学基金(U1708254)
出版年
2024
NETL
NSTL
万方数据