某电站凝结水泵泵轴联接卡环断裂原因分析  

Analysis on Fracture Reason for Pump Spindle Circlip of Power Station Condensate Pump

作　　者：孙涛[1] 冯砚厅[1] 徐雪霞[1] 柯浩[1] 孙澎[1] 

机构地区：[1]河北省电力公司电力科学研究院,河北石家庄050021

出　　处：《热加工工艺》2013年第14期194-195,共2页Hot Working Technology

摘　　要：某电站凝结水泵泵轴联接卡环近期频繁发生断裂事故。通过宏观检查、化学成分分析、金相分析、硬度检验以及电镜断口分析查找联接卡环断裂失效原因。综合设备运行工况及各项检验结果,认为该水泵联接卡环材料热处理效果不佳影响承载能力,并且由于水泵运行工况恶劣产生疲劳载荷,最终在应力集中部位发生疲劳断裂。The pump spindle circlip of a power station condensate pump generates the fracture accident frequently. The fracture reason for pump spindle circlip of the power station condensate pump was analyzed by chemical composition, hardness test, microstructure and fracture morphology observation. Combining the equipment running condition with the test results, that heat treatment worsens the beating capacity of the pump spindle circlip and the abominable working condition produces the fatigue load. And the fatigue fracture occurs in the place of the stress concentration.

关 键 词：凝结水泵 联接卡环 热处理 工况 疲劳断裂 

分 类 号：TG157[金属学及工艺—热处理]