激光加工表面在旋转式压缩机不同润滑条件下的摩擦学行为。

Tribological behaviors of laser textured surface under different lubrication conditions for rotary compressor.

机构信息

State Key Laboratory of Air-Conditioning Equipment and System Energy Conservation, Zhuhai, 519070, Guangdong, China.

Gree Electric Appliances, Inc. of Zhuhai, Zhuhai, 519070, Guangdong, China.

出版信息

Sci Rep. 2023 Apr 3;13(1):5378. doi: 10.1038/s41598-023-32490-y.

DOI:10.1038/s41598-023-32490-y

PMID:37009781

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10068804/

Abstract

Tribological behaviors of laser textured surface with elliptical dimples were experimentally compared with that of the smooth one under different lubrication conditions, including the poor-oil, rich-oil and dry lubrication. The lubrication regime was analyzed with the increasing operating load by ring-on-ring tribological tests. Finally, the performance impact of rolling piston rotary compressor with textures fabricated on the thrust surfaces was investigated. Results show that the tribological improvement strongly depends on lubrication condition. With the increase of applied loads under rich-oil and poor-oil lubrication, the effect of micro dimple promotes the critical load transforming lubrication regime, and expands the range of hydrodynamic lubrication, meanwhile maintains a similar minimum of friction coefficient as the smooth surface but enhances wear resistance. However, it is reverse to increase the friction coefficient and surface wear for the textured surfaces under dry lubrication. The compressor performance can be improved significantly by laser surface texturing with a 2% reduction of friction power consumption and a 2.5% enhancement of energy efficiency ratio.

摘要

采用环-环摩擦试验，在不同润滑条件下（包括贫油、富油和干润滑），对具有椭圆形微坑的激光加工表面的摩擦学性能进行了实验研究，并与光滑表面进行了比较。通过增加运行负荷分析了润滑状态。最后，研究了在推力表面上加工纹理对滚动活塞旋转压缩机性能的影响。结果表明，摩擦学性能的改善强烈依赖于润滑条件。在富油和贫油润滑下，随着施加负荷的增加，微凹坑的作用促进了临界负荷转变润滑状态，扩大了流体动力润滑的范围，同时保持了与光滑表面相似的最小摩擦系数，但提高了耐磨性。然而，在干润滑下，纹理表面会增加摩擦系数和表面磨损。通过激光表面形貌处理，摩擦功率消耗可降低 2%，能量效率比可提高 2.5%，从而显著提高压缩机的性能。