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Determination of Failure Causes of a Steam Turbine Casing

Abstract

The paper presents results of research and failure analysis undertaken to determine failure causes of a steam turbine casing. After 130,000 hours of service the crack in a outer shell of the turbine casing was found. The inner shell of the casing was made of cast steel grade G21CrMoV5-7, and the outer shell of grade G20CrMo4-5. Following research were performed in order to determine causes of the casing failure: chemical analysis; microstructure examinations with the use of light microscope, scanning electron microscope (SEM); mechanical properties examinations using the Charpy impact test, and Vickers hardness test; fracture mode evaluation with SEM.

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Category:
Articles
Type:
artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
Published in:
Solid State Phenomena no. 183, pages 37 - 42,
ISSN: 1012-0394
Language:
English
Publication year:
2012
Bibliographic description:
Ćwiek J., Łabanowski J., Topolska S., Sozańska M.: Determination of Failure Causes of a Steam Turbine Casing// Solid State Phenomena. -Vol. 183., (2012), s.37-42
Verified by:
Gdańsk University of Technology

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