仿生织构形态对缸套-活塞环摩擦学性能的影响  

Effect of Bionic Texture on Tribological Properties of Cylinder Liner-Piston Ring

作　　者：吕永刚 饶响 郭智威[1,2] LV Yonggang;RAO Xiang;GUO Zhiwei(School of Energy and Power Engineering,Wuhan University of Technology,Wuhan Hubei 430063,China;Reliability Engineering Institute,National Engineering Research Center for Water Transportation Safety,Wuhan Hubei 430063,China)

机构地区：[1]武汉理工大学能源与动力工程学院,湖北武汉430063 [2]国家水运安全工程技术研究中心,可靠性工程研究所,湖北武汉430063

出　　处：《润滑与密封》2022年第5期52-59,共8页Lubrication Engineering

基　　金：湖北省自然科学基金项目(2018CFB483);武汉理工大学自主创新研究基金项目(2020-ND-A1-01)。

摘　　要：为了提高缸套-活塞环的摩擦学性能,设计了一种仿生排布的菱形凹坑织构,并通过激光刻蚀技术在缸套表面进行加工;在同一转速和不同载荷下,在MWF-10往复式摩擦磨损试验机上进行试验,以探究仿生排布的菱形织构对缸套-活塞环摩擦副摩擦磨损性能的影响,并与使用阵列排布的纹理的缸套以及未经处理的原始缸套进行比较。结果表明:织构的排布形式对油膜厚度的影响较大,尤其在重载荷工况下,合理地优化排布形式能够实现较好的动压润滑效果;仿生排布的菱形织构实现了往复运动方向上纹理特征的全覆盖,能够极大程度上限制磨屑的移动并对磨屑进行收集,有效降低磨损后的表面粗糙度,从而减少磨粒磨损;仿生排布的菱形织构在各试验工况下能够有效提高油膜厚度,提升表面承载能力,实现最佳的润滑效果。In order to improve the tribological performance of cylinder liner-piston ring,a diamond-shaped pit texture with bionic arrangement was designed.The surface texture of cylinder liner was processed by laser etching technology.At the same rotational speed and different loads,the experiments were carried out on the MWF-10 reciprocating friction and wear tester to explore the influence of diamond texture with bionic arrangement on the friction and wear performance of cylinder liner-piston ring friction pair,and the results were compared with those of cylinder liners with array texture and untreated original cylinder liners.The results show that the arrangement form of texture has a great influence on the oil film thickness,especially under heavy load conditions,reasonable optimization of the arrangement form can achieve better hydrodynamic lubrication effect.The diamond-shaped texture with bionic arrangement realizes the full coverage of texture features in the reciprocating direction,which can greatly limit the movement and collection of wear debris,effectively reduce the surface roughness after wear,and reduce the abrasive wear.The diamond-shaped texture with bionic arrangement can effectively improve the oil film thickness,enhance the surface bearing capacity and achieve the best lubrication effect under various working conditions.

关 键 词：缸套-活塞环 菱形织构 仿生排布 摩擦学性能 

分 类 号：TH117[机械工程—机械设计及理论]