Journal
TRIBOLOGY TRANSACTIONS
Volume 45, Issue 3, Pages 430-434Publisher
SOC TRIBOLOGISTS & LUBRICATION ENGINEERS
DOI: 10.1080/10402000208982570
Keywords
mechanical seals; hydrostatic seals; surface texturing
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A mechanical seal subjected to laser surface texturing over an annular portion of one of its mating rings is theoretically and experimentally investigated. The partial surface texturing provides a mechanism for hydrostatic pressure build up in the sealing dam similar to that of a radial step or face coning. Optimization of the surface texturing parameters to obtain maximum hydrostatic pressure effect is performed on a theoretical model. A test rig that allows friction torque and temperature measurements in a back-to-back double seal arrangement is used to validate the surface texturing effect. It is found that optimally textured seals generate substantially less friction and heat. Moreover, a simple unbalanced seal, limited in its pressure capacity, can be easily transformed by surface texturing to an equivalent balanced seal with much higher pressure capability.
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