Failure Analysis of Ultra-High Strength Bolt of Circuit Breaker

Screw mechanism fixing bolt fracture failure of a 500kV circuit breaker spring mechanism running process. By analyzing the installation position and operating environment, and by means of chemical analysis, metallographic examination and other means, the microstructure macro and micro fracture morph...

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Bibliographic Details
Published inProcedia computer science Vol. 154; pp. 124 - 129
Main Authors Zou, Ying Xiang, Wang, Bo Zhong, Jiang, Yi Zhou, Huang, Ming Wei, Yi, Jin, Yi, Jia Yi
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.01.2019
Subjects
Bolt of high strength
Circuit breaker
Fracture
Hydrogen embrittlement
Circuit breaker
Bolt of high strength
Fracture
Hydrogen embrittlement
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Summary:Screw mechanism fixing bolt fracture failure of a 500kV circuit breaker spring mechanism running process. By analyzing the installation position and operating environment, and by means of chemical analysis, metallographic examination and other means, the microstructure macro and micro fracture morphology of the fracture bolt were analyzed. The results show that the surface of the bolt is hydrogen-rich and produces hydrogen embrittlement during surface treatment.
ISSN:1877-0509
1877-0509
DOI:10.1016/j.procs.2019.06.019