Experimental Study on Friction-wear for Valve Plate with Bionic Non-smooth Surface of Hydraulic Motor

doi:10.3901/JME.2018.13.142

Abstract

Abstract: 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.

Key words: bionic non-smooth surface, low-speed and high-torque hydraulic motor, tribological performance, valve plate

CLC Number:

TB332
TG115

MA Hao, GAO Dianrong, WU Shaofeng, LIANG Yingna. Experimental Study on Friction-wear for Valve Plate with Bionic Non-smooth Surface of Hydraulic Motor[J]. Journal of Mechanical Engineering, 2018, 54(13): 142-152.

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