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ASM Failure Analysis Case Histories

Handbook of Case Histories in Failure Analysis

Edited by
Khlefa A. Esaklul
Khlefa A. Esaklul
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ASM International
Volume
1
ISBN electronic:
978-1-62708-214-3
Publication date:
1992
Book Chapter

Failure Analysis of a Cast Steel Crosshead

By
Mohan D. Chaudhari
Mohan D. Chaudhari
Columbus Metallurgical Services, Inc.
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Published:
1992
Page range:
291 - 294

Abstract

A failed crosshead of an industrial compressor was examined using optical and scanning electron microscope. The crosshead was an ASTM A148 grade 105-85 steel casting. On the basis of the observations reported and available background information, it was concluded that the failure began with the initiation of cracks at slag inclusions and sharp fillets in weld-repair areas in the casting. The weld-repair procedures were unsatisfactory. The cracks propagated in a fatigue mode. he casting quality was judged unacceptable because of the presence of excessive shrinkage porosity. It was recommended that crosshead castings be properly inspected before machining. Revision of foundry practice to reduce or eliminate porosity was also recommended.

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Mohan D. Chaudhari, 1992. "Failure Analysis of a Cast Steel Crosshead", Handbook of Case Histories in Failure Analysis, Khlefa A. Esaklul

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