Q345E与20钢异种钢管氩电联焊工艺研究  

Research on TIG-SMAW united welding process of Q345E and 20 dissimilar steel pipes

作　　者：李亚军 刘静 马俊文 谢思维 刘旭勉 肖莉 Li Yajun;Liu Jing;Ma Junwen;Xie Siwei;Liu Xumian;Xiao Li(CNPC Jichai Power Company Limited Chengdu Compressor Branch,Chengdu 610100,China)

机构地区：[1]中国石油集团济柴动力有限公司成都压缩机分公司,四川成都610100

出　　处：《金属制品》2024年第1期66-68,共3页Metal Products

基　　金：中油济柴成都压缩机分公司资助项目(项目编号2021D08-B)。

摘　　要：采用氩电联焊对Q345E和20钢异种钢管进行焊接试验及焊接接头力学性能测试。结果表明:Q345E和20钢异种钢管焊接接头具有良好的工艺性能,X射线探伤不低于Ⅱ级,抗拉强度分别为542 MPa和536 MPa,-20℃冲击功不低于33 J,侧弯试样弯曲面焊缝和热影响区没有裂纹,满足NB/T 47014—2011要求。Welding test and welded joint mechanical properties of Q345E and 20 steel dissimilar steel pipes were carried out by TIG-SMAW united welding process.Results show that welded joints of Q345E and 20 steel dissimilar steel pipes have good process performance.X-ray flaw detection is not lower than grade II,tensile strength is 542 MPa and 536 MPa respectively,impact energy at-20 ℃ is not less than 33 J,and there are no cracks in weld and heat-affected zone on curved surface of lateral bending specimen,which meets requirements of NB/T 47014—2011.

关 键 词：Q345E 20钢 氩电联焊 力学性能 

分 类 号：TG457.6[金属学及工艺—焊接]