Study on Stress and Tribology of Micro Contact Surface in Seawater

doi:10.3901/JME.2018.03.088

Abstract

Abstract: In order to study the dynamic and tribological performance of micro contact surface in seawater, by the goals of no stiff impact and flexible impact, study focus on the contact pressure and tribological stress of B-spline curve, quantic polynomial curve and sine curve, and the friction experiments were carried out, with the results to select the material of friction pair. The results shows that the maximum contact stress is about 160 MPa, the maximum tribological stress is about 16 MPa. Moreover, the mechanical performance of B-spline curve and sine curve is better than quantic polynomial curve. The tribological behavior, of three kinds PEEK composites (pure PEEK, 30% glass fiber PEEK and 10% graphite/10% carbon fiber/10%PTFE PEEK) coupled with 17-4PH, were compared under seawater by pin-on-disc friction test, the operating condition is about 160 MPa and 0.5 m/s, results indicates that the wear and friction coefficient of 10% graphite/10% carbon fiber/10%PTFE PEEK and 17-4PH friction pair is minimum, the main mechanism is light abrasive wear, so 10% graphite/10% carbon fiber/10%PTFE PEEK composite is suitable for micro contact surface.

Key words: contact stress, micro contact surface, polyether-ether-ketone, seawater radial piston pump, tribology stress

CLC Number:

TG122

ZHOU Jie, WU Jinjun, YU Gegang, YANG Yousheng, DUAN Haitao, YI Meng. Study on Stress and Tribology of Micro Contact Surface in Seawater[J]. Journal of Mechanical Engineering, 2018, 54(3): 88-94.

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