Tribological properties of the QAL9-4 and 17-4PH textured friction pair with water lubrication
Source abstract
Abstract
To study the lubrication and wear reduction characteristics of the QAL9-4 and 17-4pH textured friction pair during water lubrication, the dynamic pressure bearing and cavitation characteristics were analyzed using a computational fluid dynamics method. Then, based on 13 groups of samples with different depths, diameters, and area ratios, relevant frictional and wear tests were carried out. The results showed that the texture affected the pressure distribution in the textured region and improved the liquid film bearing capacity, which increased gradually as the equivalent Reynolds number increased. Under test conditions, the texture parameters had a significant influence on lubrication and wear reduction performance. The optimum texture diameter, the depth, and the area ratio were 300 µm, 40 µm, and 10%, respectively. The wear tracks on the textured specimens were small in size and shallow in depth compared to those on the non-textured specimens. The wear tracks on the textured specimens were regional, and there were more wear tracks in the area without micro-dimples. In summary, it was feasible to apply surface texture to the QAL9-4 and 17-4PH friction pair to improve the lubrication and wear reduction characteristics with water lubrication.
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Research context
OpenAlex topics: Tribology and Lubrication Engineering · Gear and Bearing Dynamics Analysis · Hydraulic and Pneumatic Systems
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering, Anhui University of Science and Technology 1 , Huainan 232001, People’s Republic of China
State Key Laboratory of Fluid Power and Mechatronic Systems 2 , Hangzhou 310027, People’s Republic of China
Jiangsu Key Laboratory of Mine Mechanical and Electrical Equipment, China University of Mining & Technology 3 , Xuzhou 221116, People’s Republic of China
Anhui Key Laboratory of Intelligent Mining Equipment and Technology, Anhui University of Science and Technology 4 , Huainan 232001, People’s Republic of China
Funding
Jiangsu Key Laboratory of Mine Mechanical and Electrical Equipment · State Key Laboratory of Fluid Power and Mechatronic Systems · Natural Science Foundation of Anhui Province · University Natural Science Research Project of Anhui Province · Foundation for Innovative Research Groups of the National Natural Science Foundation of China · Anhui University of Science and Technology · Academic and Technical Leaders' Research Activities Funding of Anhui Province
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