On site monitoring on simulation wear of cylinderpiston
LI Huachong, TIAN Hongxiang, MING Tingfeng, SUN Yunling, GONG Xiaolong
(College of Power Engineering, Naval University of Engineering, Wuhan 430033, China)
 

Abstract: Aiming at the monitoring abnormal wear of cylinder and piston, the cylinder and piston were made into standard friction pairs. The experiment was carried out on the reciprocating wear testing machine . The field monitoring of wear debris in lubricating oil was investigated. The amount of ferromagnetic wear particles measured by magnetic debris monitor and the weight loss of friction pairs were summarized. The effects of two kinds of lubrication condition and five kinds of load on wear rate were analyzed. The content and morphology of ferromagnetic wear particles in oil samples were tested and analyzed by magnetic debris monitor and analytical ferrography. The results show that correlation coefficients between the reading of magnetic debris monitor and the loss of the cylinder and piston is 0.932 and 0.999 respectively, soaking lubrication reduced wear by 96% compared with the dropping lubrication, in 90 minutes the wear increased by 908% with the load increasing from 67 N to 157 N under the dropping lubrication conditions, the magnetic debris monitor can be used as a qualitative and semi quantitative onsite rapid instrument to detect magnetic debris compared with the analytical ferrography.
Key words: cylinder; piston; wear; monitoring; analytical ferrography; magnetic debris monitor