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Advances in Materials Science and Engineering
Volume 2017, Article ID 8256429, 11 pages
Research Article

Wear Performance of Bionic Dimpled-Shape Pistons of Mud Pump

1Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
2College of Mechanical and Electrical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China
3Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, China

Correspondence should be addressed to Shaofeng Ru; moc.361@gnefoahs.ur and Qian Cong; nc.ude.ulj@naiqgnoc

Received 13 June 2017; Accepted 28 September 2017; Published 27 December 2017

Academic Editor: Aniello Riccio

Copyright © 2017 Xuejing Cheng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The piston is one of the parts that most easily become worn out and experience failure in mud pumps for well drilling. By imitating the body surface morphology of the dung beetle, this paper proposed a new type (BW-160) of mud pump piston that had a dimpled shape in the regular layout on the piston leather cup surface and carried out a performance test on the self-built test rig. Firstly, the influence of different dimple diameters on the service life of the piston was analyzed. Secondly, the analysis of the influence of the dimple central included angle on the service life of the piston under the same dimple area density was obtained. Thirdly, the wear of the new type of piston under the same wear time was analyzed. The experimental results indicated that the service life of the piston with dimples on the surface was longer than that of L-Standard pistons, and the maximum increase in the value of service life was 92.06%. Finally, the Workbench module of the software ANSYS was used to discuss the wear-resisting mechanism of the new type of piston.