高水头电站压力钢管环焊缝裂纹分析  

Study on the cracks in circumferential weld of penstocks used on high-head hydrantic power station

作　　者：钟琦[1] 雷斌隆[1] 朱小刚[1] 

机构地区：[1]西南交通大学,四川成都610031

出　　处：《电焊机》2010年第9期80-82,共3页Electric Welding Machine

摘　　要：对高水头电站压力钢管环焊缝产生了裂纹的管节进行了断口解剖和微观组织分析,并结合对该管节焊接接头和母材力学性能的实验研究,查明了管节产生裂纹和裂纹扩展的原因。为裂纹管节的返修和处理,提出了可行的处理方案及措施。Through the analysis of the fracture and microstructure combined with study on the mechanical examination of the welded joints and base metal in crack pipe sections,this paper has identified the reasons for crack growth and crack propagation in circumferential weld of penstocks used on high-head power station.It has provided a feasible treatment options and measures for rework and disposal of the crack pipe section.

关 键 词：焊接缺陷 断口分析 力学性能试验 

分 类 号：TG457.1[金属学及工艺—焊接]