A Status Review of Externally-Pressurized, Steam-Lubricated Bearings.
MECHANICAL TECHNOLOGY INC LATHAM N Y
Pagination or Media Count:
Lubrication with condensible vapors, such as steam near its saturation condition introduces new problems of bearing design, notably the prevention of steam-hammer instability and of film collapse induced by condensation. These problems are discussed in this report. The problem of materials selection for steam-lubricated bearings is reviewed with regard to the properties desired of candidate materials, and the results of erosion tests with solid materials and plasma-sprayed coatings are discussed. Experiments conducted to establish load capacity, stiffness flow and instability thresholds of steam-lubricated journal and thrust bearings are described and the results compared with theoretical prediction. A 500-hour endurance test recently completed with a 200-pound rotor fully supported in steam lubricated bearings is described with emphasis on the practical requirements of steam lubricated bearings. Author
- Machinery and Tools