给水泵轴横向裂纹分析  

Analysis on Transverse Cracks of Water-feeding Pump Shaft

作　　者：王家敏[1] 曾振鹏[1] 何平 

机构地区：[1]上海交通大学材料科学与工程学院,上海200240 [2]上海电力修造总厂有限公司,上海200001

出　　处：《理化检验（物理分册）》2011年第9期591-593,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：某厂生产的给水泵轴在车削加工过程中发现轴中央部位有一条横向裂纹。采用化学成分分析、金相检验和断口分析等方法对裂纹产生的原因进行了分析。结果表明:该裂纹为锻造裂纹,锻造温度偏高可能是引起裂纹的重要原因。A transverse crack was observed in middle part of water-feeding pump shaft during the turning process. The reason on the crack was analyzed by means of chemical composition analysis, metallographic examination and fracture analysis. The results showed that the transverse crack in wate-feeding pump shaft was forging crack, which maybe caused by high forging temperature.

关 键 词：给水泵轴 横向裂纹 氧化皮 脱碳 锻造裂纹 锻造温度 

分 类 号：TK414.211[动力工程及工程热物理—动力机械及工程]