Failure analysis of counter shafts of a centrifugal pump

被引：18

作者：

Das, G ^{[1
]}

Sinha, AN ^{[1
]}

Mishra, SK ^{[1
]}

Bhattacharya, DK ^{[1
]}

机构：

[1] Natl Met Lab, Jamshedpur 831007, Bihar, India

来源：

ENGINEERING FAILURE ANALYSIS | 1999年 / 6卷 / 04期

关键词：

fatigue; heat treatment; machinery failures; shafts;

D O I：

10.1016/S1350-6307(98)00037-5

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

An analysis of the premature failure of two counter shafts used in centrifugal pumps for lifting slurry has been carried out. Chemical analysis, microstructural characterisation, fractography, hardness measurement, tensile and Charpy impact tests were used for the analysis. The chemical compositions for the shafts were as per recommendation. The microstructure of one of the shafts was ferritic-pearlitic and its mechanical properties were inferior to the recommended values. For the other shaft the microstructure was tempered bainite; although the impact energy satisfied the specification, the other properties (hardness, UTS) were inferior. It was concluded that the improper heat treatment was the prime cause for the premature failure of the shafts. (C). 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：267 / 276

页数：10

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