摘要
为探寻低速大扭矩水压马达仿生非光滑表面配流副摩擦磨损性能,采用精密加工技术在碳纤维增强PEEK试样表面加工出不同形状的仿生非光滑凹坑,与316L不锈钢形成摩擦副,利用MMD-5A多功能摩擦磨损试验机在海水润滑条件下,对其在不同面积占有率下的摩擦因数、磨损率等参数进行测试,考察其凹坑面积占有率对摩擦副摩擦磨损的影响,利用OLYMPUS OLS3100激光共焦显微镜对磨损表面进行分析。研究表明:在海水润滑条件下,下试样CF/PEEK在磨擦过程中主要发生了犁沟效应和磨粒磨损,仿生非光滑表面的凹坑可以有效存储磨粒,减轻磨粒磨损,进而起到减摩效果。面积占有率为15%的圆锥形凹坑仿生非光滑表面更利于存储磨屑,因而摩擦因数最低,减磨效果最好。
In order to explore the innovative mechanism of anti-wear for flow friction pair of low-speed and high-torque hydraulic motor, different types of bionic non-smooth units are processed on the surface of CF/PEEK specimen using precision machining technology. The friction coefficient and wear loss of friction pairs with 316L stainless steel are measured on MMD-5A multi-function friction and wear tester under different normal loads. The anti-wear of different types of bionic non-smooth surface is tested. The worn surface morphology is observed by OLS3100 laser confocal microscope. The results show that abrasive wear is the main form of smooth surface friction pair under seawater lubrication. Because pits can store seawater and wear debris which helps producing hydrodynamic lubrication and reducing abrasive wear, so the main wear form of non-smooth surface friction pairs is plowing effect. By analyzing the results found that only in the arrangement of proper pits and under the condition of the area of the appropriate share can reduce the wear is in the process of wear and tear. The effect on reducing resistance and anti-wear of friction pair with area share 15% Conical pit surface is more conducive to storage chip, thus degree minimum friction coefficient, wearing the best effect.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2018年第13期142-152,共11页
Journal of Mechanical Engineering
基金
河北省自然科学基金资助项目(E2015203006)
关键词
低速大扭矩水压马达
仿生非光滑表面
配流盘
摩擦学性能
low-speed and high-torque hydraulic motor
bionic non-smooth surface
valve plate
tribological performance
