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Research on the tribological performacne of grooved textured end seals based on guide-aggregation effect
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Xiaoya CHEN1, Lei ZHANG1, Meng LI1, Liping SHI1, 2
Journal of Mechanical Strength | 2025, 47(6) : 91 - 98
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Journal of Mechanical Strength | 2025, 47(6): 91-98
Experimental Research·Testing Technology
Research on the tribological performacne of grooved textured end seals based on guide-aggregation effect
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Xiaoya CHEN1, Lei ZHANG1, Meng LI1, Liping SHI1, 2
Affiliations
  • 1.School of Mechanical Engineering, Anhui University of Technology, Ma’anshan 243032, China
  • 2.Wuhu Technological Innovation Research Institute of Anhui University of Technology, Wuhu 241002, China
Published: 2025-06-15 doi: 10.16579/j.issn.1001.9669.2025.06.011
Outline
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Surface texture design is an effective way to achieve small leakage, long life and highly reliable operation of mechanical end seals. To investigate the characteristics of the interface film of guide groove texture, through the design and preparation of semi-circular, herringbone and E-shaped guide groove textures, experiments and theoretical research under high-speed operation conditions were carried out, the influence of different guide groove textures on the tribological properties of end face seals was explored. The results show that the existence of the guide groove can effectively improve the bearing capacity of the interface film and improve the tribological performance. In numerical calculations, the results show that the frictional performances of face seals varied with the configuration of guide groove. The herringbone textures and E-type ones show an obvious guide-aggregation effect. When the lubricant in E-type texture after being guide-aggregation through the groove, the pressure accumulates at the textured tail barrier, and fluid in the face seal clearance cannot escape from the guide groove boundary. As a result,the low energy loss in system, and an optimal liquid film bearing capacity achieves. Under different depths, the existence of guide groove promotes the hydrodynamic pressure. With the increase in depth, the bearing capacity of the liquid film increases first and then decreases. For the E-shape texture, the optimum bearing capacity of liquid film Pav=0.527 5 MPa is obtained at h1=10 μm. The bearing capacity of fluid film of E-shape texture has a 51.2% increase in comparison to the common grooved texture, the value of frictional torque has a 53.5% decrease. The analysis show that, the configuration of guide groove results in an accumulation of lubricant on the top of texture, which enhances the pressure convergence, thereby improving the bearing capacity of the lubricating fluid film and reducing friction(‘guide⁃aggregation effect’). The geometric parameters of the guide groove have a significant impact on the fluid dynamic pressure in the end face sealing pair,which will influence the tribological performances of face seal. The research result provides theoretical support for the design of non-contact end face seal material surface texture in future.

Guide-aggregation effect  /  Mechanical seal  /  Hydrodynamic lubrication  /  Surface texture  /  Friction reduction mechanism
Xiaoya CHEN, Lei ZHANG, Meng LI, Liping SHI. Research on the tribological performacne of grooved textured end seals based on guide-aggregation effect[J]. Journal of Mechanical Strength, 2025 , 47 (6) : 91 -98 . DOI: 10.16579/j.issn.1001.9669.2025.06.011
  • Natural Science Foundation of China(52205178)
  • Natural Science Foundation of Anhui Province(2108085QE228; 2108085ME174)
  • Science and Technology Plan Project of Wuhu City(2023jc02)
  • University Synergy Innovation Program of Anhui Province(GXXT-2023-022)
Year 2025 volume 47 Issue 6
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Article Info
doi: 10.16579/j.issn.1001.9669.2025.06.011
  • Receive Date:2023-12-04
  • Online Date:2026-03-18
  • Published:2025-06-15
Article Data
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History
  • Received:2023-12-04
Funding
Natural Science Foundation of China(52205178)
Natural Science Foundation of Anhui Province(2108085QE228; 2108085ME174)
Science and Technology Plan Project of Wuhu City(2023jc02)
University Synergy Innovation Program of Anhui Province(GXXT-2023-022)
Affiliations
    1.School of Mechanical Engineering, Anhui University of Technology, Ma’anshan 243032, China
    2.Wuhu Technological Innovation Research Institute of Anhui University of Technology, Wuhu 241002, China

Corresponding:

SHI Liping, E-mail:
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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