Abstract
It has been shown that deterministic micro-features on the shaft of a radial lip seal impact seal behavior. The effect of nickel film triangular cavity orientation on seal performance, in particular flow direction, pumping rate, and friction torque, is investigated experimentally. Cavity shape, area fraction, and depth are held constant while cavity orientation is varied. Oil drop test results are compared to those for conventional seals, i.e., plain stainless steel shafts, and shafts with an electroplated nickel surface, but no microcavities. Surface texture design was found to control both the pumping rate and direction. Preferential orientations pumped oil toward the base of the cavities while patterns in neutral, or non-preferential, orientations were found to reverse pump. In all cases, the presence of microcavities was found to reduce friction torque when pumping. The surface textures also enhanced pumping rates and reduced operating temperatures.
Original language | English |
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State | Published - 2008 |
Event | 2008 Annual Meeting of the Society of Tribologists and Lubrication Engineers, STLE 2008 - Cleveland, OH, United States Duration: May 18 2008 → May 22 2008 |
Conference
Conference | 2008 Annual Meeting of the Society of Tribologists and Lubrication Engineers, STLE 2008 |
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Country/Territory | United States |
City | Cleveland, OH |
Period | 5/18/08 → 5/22/08 |
Keywords
- EHL (general)
- Seals (and sealing technology)
- Surface modification
ASJC Scopus subject areas
- Colloid and Surface Chemistry
- Process Chemistry and Technology
- Surfaces and Interfaces