文献类型：期刊文献

中文题名：离心泵叶轮断裂失效分析

英文题名：Fracture Failure Analysis on Centrifugal Pump Impeller

作者：邹镔[1];关凯书[1];钟继如[1]

机构：[1]华东理工大学承压系统与安全教育部重点实验室,上海200237

年份：2016

卷号：45

期号：12

起止页码：250

中文期刊名：热加工工艺

外文期刊名：Hot Working Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

语种：中文

中文关键词：叶轮;离心泵;疲劳断裂;失效分析

外文关键词：impeller; centrifugal pump; fatigue fracture; failure analysis

摘要：通过断口宏观形貌分析、金相分析和扫描电镜观察等方法对离心泵叶轮的断裂进行了分析。结果表明,叶轮的断裂属于多源疲劳断裂,在其断口上可观察若干疲劳源。叶轮由于安装不当在工作过程中与泵盖摩擦,其表面可观察到明显的摩擦痕迹。疲劳裂纹从多个疲劳源处发展并彼此相连,最终导致叶轮发生断裂。
By macroscopic morphology analysis, metallographic analysis and SEM observation, the rupture reason for centrifugal pump impeller was analyzed. The results show that the failure reason for the crack is multi-sources fatigue, and there are several sources of fatigue on the fracture surface. Because of the improper installation, the friction between impeller and the pump cover happens, which can leave obvious trace on the surface of impeller. The fatigue crack evolves from mult-sources and connects with each other, which can eventually cause the rupture of impeller.