Tribology International.
Tribology International.

The research article 'Simulation and experimental investigation on low wear rate surface contour of piston/cylinder pair in an axial piston pump' has been published in the journal Tribology International (Volume 162, October 2021, 107127).

Abstract

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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