期刊
TRIBOLOGY INTERNATIONAL
卷 162, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2021.107127
关键词
Piston; cylinder pair; Low wear rate; Wear contour; Axial piston pump
资金
- National Key Research and Development Program of China [2019YFB2004504]
- National Outstanding Youth Science Foundation of China [51922093]
- National Natural Science Foundation of China [51890882]
- Natural Science Foundation of Zhejiang Province [LQ21E050022]
The study demonstrates that optimizing the design of a pre-machined surface contour can reduce wear rate during the initial operating stage of the piston/cylinder pair, with the surface modification layer playing a crucial role in this process.
The surface modification technology affects the friction and wear resistance of the piston/cylinder pair in axial piston pumps. However, in the early operating stages, the bearing surface cannot provide optimal load-bearing and lubrication conditions, resulting in a high wear rate and rapid loss of the surface modification layer. In this paper, the variation in wear of the piston/cylinder pair with the operating time is obtained by a wear degradation model. The wear contour at the lowest wear rate is derived to guide the design of a pre-machined surface contour. The experimental results show that the pre-machined contour reduces the wear rate during the initial operating stage, with the surface modification layer covering the pre-machined surface playing a greater role.
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