引用本文:赵章行,龙威,任璞,雷基林.表面织构类型对摩擦副减摩性能的影响分析*[J].中国表面工程,2022,35(1):173~182
ZHAO Zhangxing,LONG Wei,REN Pu,LEI Jilin.Analysis of Influence of Surface Texture Type on Lubrication and Friction Reduction Performance of Friction Pair[J].China Surface Engineering,2022,35(1):173~182
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表面织构类型对摩擦副减摩性能的影响分析*
赵章行1, 龙威1, 任璞1, 雷基林2
1.昆明理工大学机电工程学院 昆明 650500;2.昆明理工大学云南省内燃机重点实验室 昆明 650500
摘要:
目前对表面织构润滑减摩机理的认识还不够完善。为研究不同织构类型所适用的最佳工况,以内燃机活塞-缸套摩擦副为研究对象,采用时均雷诺方程及周期边界条件,建立织构条件下平面摩擦副润滑油膜的控制方程。通过试验测试结合流场分析,明确表面均布凹坑型微织构和斜槽型微织构的润滑减摩机制。进一步对比坑-槽复合型织构和槽-槽耦合对摩时摩擦因数的变化规律,从转速和载荷的角度明确适合各织构类型的最优工况。研究发现:斜槽型织构具有更优的减摩效果,并在负载 100 N 时摩擦因数最优,转速对摩擦因数的影响较小;凹坑型织构和复合型织构在 80 N 载荷下减摩效果最佳,在 350 r/min 时摩擦因数达到最小值;耦合槽型织构在低承载时摩擦因数低于单斜槽织构(最大相差 10.2%),转速对摩擦因数的影响较小。 针对几种织构类型所适应的最优工况进行研究,明确了不同工况下的织构类型的选择和优化。
关键词:  表面微织构  不同类型  润滑减摩  最优工况  摩擦因数
DOI:10.11933/j.issn.1007-9289.20210907001
分类号:TG156;TB114
基金项目:国家自然科学基金资助项目(51766006)
Analysis of Influence of Surface Texture Type on Lubrication and Friction Reduction Performance of Friction Pair
ZHAO Zhangxing1, LONG Wei1, REN Pu1, LEI Jilin2
1.Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology,Kunming 650500 , China;2.Yunnan Province Key Laboratory of Internal Combustion Engines, Kunming 650500 , China
Abstract:
The current understanding of the surface weave lubrication and friction reduction mechanism is not yet complete. In order to study the optimal working conditions for different texture types, this paper takes the piston-cylinder liner friction pair of internal combustion engine as the research object, and uses the time-averaged Reynolds equation and periodic boundary conditions to establish the control equation of the lubricating oil film of the plane friction pair under texture conditions. Experimental tests are combined with flow field analysis to clarify the lubrication and friction reduction mechanism of surface homogeneous crater type microweave and oblique groove type microweave. Further the variation law of friction factor is compared between pit-slot composite weave and slot-slot coupling pair friction, and the optimal working conditions are clarified for each weave type from the perspective of speed and load. It is found that the groove texture has better friction reduction effect and the friction factor is optimal when the load is 100 N. The rotational speed has little effect on the friction factor. Pit texture and composite texture have the best antifriction effect under 80 N load, and the friction factor reaches the minimum at 350 r / min. The friction factor of the coupled groove texture is lower than that of the monoclinic groove texture at low load-the maximum difference is 10.2%, and the rotational speed has little effect on the friction factor. The optimal working conditions for several weave types are studied, and the selection and optimization of the weave types under different working conditions are clarified.
Key words:  surface micro-texture  different types  lubrication and antifriction  optimal conditions  friction factor
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