Fracture failure analysis of the pump shaft

Author:

Jiang Chengjun,Tao Kai,Wang Jifeng,Wang Wei

Abstract

The failure reasons of the circulating pump shaft in the upper section of the quench tower were analyzed by means of chemical composition analysis, macroscopic observation, metallographic examination and fracture section analysis. The analysis result shows that the calcium-silicate inclusions in the surface of the pump shaft cause the microcracks and the parallel fatigue sources, which leads to the fatigue cracks propagation under alternating load and finally the shaft is fatigue fractured.

Publisher

EDP Sciences

Reference7 articles.

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4. Li T.H. (2006) Metallographic map of metallic Materials. China Machine Press, Beijing.

5. Cui Y.X. (1998) Fracture analysis of metal. Harbin Institute of Technology Press, Harbin.

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