S31603不锈钢焊接工艺及性能研究  

Research on welding process and properties of S31603 stainless steel

作　　者：李亚军 毛洪强 汪伟 赵太源 叶永平 谢思维 Li Yajun;Mao Hongqiang;Wang Wei;Zhao Taiyuan;Ye Yongping;Xie Siwei(CNPC Jichai Power Company Limited Chengdu Compressor Branch,Chengdu 610100,China;Material Purchasing Department of Tarim Oilfield Company,Korla 841000,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 [2]塔里木油田公司物资采办事业部,新疆库尔勒841000

出　　处：《金属制品》2023年第4期56-58,61,共4页Metal Products

基　　金：中油济柴科技资助项目(项目编号2019C-016)。

摘　　要：对管内充氩气保护在二氧化碳压缩机不锈钢S31603管道中的焊接效果进行检测。结果表明:焊接接头射线和渗透检测都为I级,抗拉强度不低于616 MPa,-50℃冲击吸收能量达到55 J以上,硬度小于187 HBW,面弯和背弯以及耐腐蚀性能试验合格,结果符合NB/T 47014—2011和相关技术要求。焊缝组织为树枝状奥氏体加少量铁素体,铁素体有利于提高焊缝金属的耐晶界腐蚀能力和抗裂纹敏感性。The welding effect of argon gas filling protection in stainless steel S31603 pipeline of carbon dioxide compressor was tested.Results show that radiographic and penetrant testing of welded joint are both GradeⅠ,with tensile strength is no less than 616 MPa,impact absorption energy is over 55 J at-50℃,hardness is less than 187 HBW,and qualified surface and back bending as well as corrosion resistance tests.Results comply with NB/T 47014—2011 and relevant technical requirements.Microstructure of weld seam is dendritic austenite with a small amount of ferrite,which is beneficial for improving resistance to grain boundary corrosion and crack sensitivity of weld metal.

关 键 词：S31603 射线检测 氩气保护 焊接 力学性能 晶界腐蚀 

分 类 号：TG457.6[金属学及工艺—焊接]