蒸汽管线三通管的泄漏原因分析  

LEAKAGE ANALYSIS OF THREE-WAY TUBE ON STEAM PIPELINE

作　　者：谷志刚[1] 由向群[1] 李伟航[2] 

机构地区：[1]辽宁工业大学材料与化学工程学院,锦州121001 [2]锦州石化公司,锦州121001

出　　处：《理化检验（物理分册）》2008年第9期501-503,506,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：催化装置的蒸汽管线上有多个三通管均在焊缝处发生蒸汽泄漏。采用化学成分分析、硬度测试、宏观和微观分析等方法对泄漏的三通管进行了分析。结果表明,由于在焊接时,接口处未焊透留下了缝隙,在工作介质和焊接应力的长期作用下产生了缝隙腐蚀和应力腐蚀,最终导致泄漏。The steam leakage of the three-way tubes on the steam pipeline of a catalytic device happened in the welding line. The leakage analysis was made by means of chemical composition, hardness, macrostructure and mierostructure examination etc. The results showed that the gap corrosion and stress corrosion was occurred at the welding line of the three-way tubes in long-term corrosion environments, by no welding on gaps caused during welding.

关 键 词：三通管 焊缝 未焊透 缝隙腐蚀 应力腐蚀 

分 类 号：TE986[石油与天然气工程—石油机械设备]