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Babbitt Casting and Babbitt Spraying Processes Case Study

M. Jalali Azizpour; S.Norouzi H. Mohammadi Majd

In this paper, the babbitting of a bearing in boiler feed pump of an electromotor has been studied. These bearings have an important role in reducing the shut down times in the pumps, compressors and turbines. The most conventional method in babbitting is casting as a melting method. The comparison between thermal spray and casting methods in babbitting shows that the thermal spraying babbitt layer has better performance and tribological behavior. The metallurgical and tribological analysis such as SEM, EDS and wet chemical analysis has been made in the Babbitt alloys and worn surfaces. Two type of babbitt materials: tinbase and lead-base babbitt was used. The benefits of thermally sprayed babbitt layers are completely clear especially in large bearings.

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  • American Heritage Dictionary, 4th ed, headword babbitt metal.

  • Application Bulletin: Bearings and Babbitt, Metco Inc.

  • Green 1996, p. 2150.

  • Hellemans, Alexander; Bryan Bunch (1988). The Timetables of Science. New York, New York: Simon and Schuster. pp. 305. ISBN 0671621300.

  • Metals Handbook: Metallography, Structures and Phase Diagrams, American Society of Metals.1993.

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