Factors Influencing Thermomechanical Failure of Face Seals. II.
Abstract
Analytical and experimental studies of factors affecting thermocracking and other modes of thermomechanical failure of mechanical face seals have continued for a second year. A unique contact probe/thermocouple has been built for studying characteristics of small patches of solid-to-solid contact at the sealing interface of mechanical face seals during seal operation. The probe was used to determine the number, size, location, and surface temperature of contact patches over a range of seal velocities. Both dry and liquid-lubricated conditions were studied, and three different mating ring materials were tested. It was found that small, discrete contact patches are indeed present on the contact interface, that the patches tend to be stationary with respect to the metallic mating ring, whether that ring is stationary or rotating, and that the size and temperature of the contact spots is influenced by operating velocity and by the thermal, elastic, and wear properties of the seal materials. The analytical phase of the study was focused on the prediction of surface temperatures at the patches of contact on the seal interface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1983
- Accession Number
- ADA124189
Entities
People
- Francis E. Kennedy Jr.
- John N. Grim
- Roger P. Glovsky