低钢级螺旋埋弧焊管焊接接头低温韧性分析  

Analysis of low-temperature toughness of welded joint in low-grade SAWH pipe

作　　者：李建一 王庆国 刘树岭 陈楠 郭攀岗 崔润祥 付雪强 

机构地区：[1]中国石油集团渤海石油装备制造有限公司,河北青县062658

出　　处：《焊接技术》2013年第8期6-8,83,共3页Welding Technology

摘　　要：本文对近期生产的北京、河北等地方燃气管线用L290钢级螺旋埋弧焊管焊缝及热影响区夏比冲击韧性试验结果进行了统计分析。统计结果表明:随着钢管壁厚的增大,焊接热输入需随之增大,焊缝夏比冲击吸收功逐渐降低;热影响区的夏比冲击韧性整体较好,母材的夏比冲击吸收功越高,热影响区冲击吸收功越高,二者之间的差值也越大。The Charpy impact test results of L290 grade SAWH pipe weld and HAZ used in local gas pipelines(such as Beijing city, Hebei pro.) recently were analyzed. The results showed that with the increase in pipe wall thickness, the weld heat input increases, and the weld Charpy impact energy decreases. The HAZ have good Charpy impact toughness. The higher base metal Charpy impact energy, the higher HAZ Charpy impact energy, and the greater difference between them.

关 键 词：L290(X42) 焊接接头 低温韧性 螺旋埋弧焊管 

分 类 号：TG407[金属学及工艺—焊接]