微织构自润滑表面在油介质中的摩擦学性能

发布时间：2018-09-09 12:18

【摘要】：为探究不同表面处理方式对试样表面摩擦学性能的影响,分别对GCr15试样表面进行激光微织构加工,光滑表面涂抹润滑油,微织构表面填充固体润滑剂,微织构表面涂抹润滑油,微织构表面填充固体润滑剂并涂抹润滑油等不同表面处理方式,在MMW-1A摩擦磨损机上进行摩擦磨损试验。同时改变试验的载荷及转速,探究在不同转速和载荷工况下,不同表面处理方式对试样摩擦因数的影响。结果表明,在干摩擦条件下,试样表面采用微织构处理并填涂固体润滑剂可使摩擦因数较光滑表面降低47.6%;在油介质中,采用微织构处理可使摩擦因数较光滑表面降低4.8%,采用微织构处理并填充固体润滑剂可使摩擦因数较光滑表面降低17.7%。且在油介质中,采用织构化处理和固体润滑结合的表面处理方法,试样摩擦因数随载荷增大而减少且逐渐趋于稳定,但随转速增大而增大。
[Abstract]:In order to investigate the effect of different surface treatment methods on the surface tribological properties of GCr15 samples, the surface of GCr15 samples was treated with laser microtexture, lubricating oil was applied on smooth surface, solid lubricant was filled with microtexture surface, and lubricating oil was applied on microtexture surface. The friction and wear tests were carried out on MMW-1A friction and wear machine with different surface treatment methods such as filling solid lubricant and applying lubricating oil on the surface of microtexture. At the same time, the influence of different surface treatment methods on the friction coefficient of the specimen was investigated under different rotating speed and load conditions by changing the load and rotating speed of the test. The results show that under dry friction conditions, the friction coefficient of the sample surface can be reduced by 47.6% compared with the smooth surface by using microtexture treatment and filling with solid lubricant, while in oil medium, the friction coefficient can be reduced by 47.6%. Using microtexture treatment can reduce the friction coefficient of the smooth surface by 4.8, and the friction coefficient of the smooth surface by using the microtexture treatment and filling the solid lubricant can reduce the friction coefficient by 17.7. In the oil medium, the friction coefficient of the sample decreases with the increase of load and tends to be stable, but increases with the increase of rotational speed by using the method of surface treatment combined with texture treatment and solid lubrication.
【作者单位】：江苏大学机械工程学院;江苏大学知识产权中心;
【基金】：国家自然科学基金(51375211) 江苏省科技计划(SBE2015001035) 江苏省普通高校专业学位研究生实践创新计划(SJZZ16_0197)~~
【分类号】：TG174.4

【相似文献】