2205双相不锈钢组合焊工艺研究  

Combination welding process of 2205 duplex stainless steel

作　　者：王红 牛虎理 刘剑 何亚章 杨华庆 孙欣妍 WANG Hong;NIU Huli;LIU Jian;HE Yazhang;YANG Huaqing;SUN Xinyan(CNPC Engineering Technology Research Co.,Ltd.,Tianjin 300451,China;CNPC Key Laboratory of Offshore Engineering,Tianjin 300451,China)

机构地区：[1]中国石油集团工程技术研究有限公司,天津300451 [2]中国石油集团海洋工程重点实验室,天津300451

出　　处：《石油工程建设》2025年第1期72-75,共4页Petroleum Engineering Construction

摘　　要：2205双相不锈钢管采用氩弧焊打底、焊条电弧焊填盖的组合焊工艺进行单道多层焊接,以NB/T 47014—2023为基础,对接头进行常规力学性能试验分析,同时对接头的抗氢致开裂性能、耐点蚀性能、不同焊层的微观组织及相比例进行研究。研究表明,合理的焊接工艺和严格的过程控制,能够实现2205双相不锈钢两相比例控制,确保2205双相不锈钢单道多层组合焊工艺接头的力学性能、抗氢致开裂性能和耐点腐蚀性能符合相关标准要求。The combination welding process of argon arc welding for root and manual arc welding for filling was applied in single-pass multi-layer welding of 2205 duplex stainless steel pipe.Based on NB/T 47014-2023,the conventional mechanical properties of the joint were tested and analyzed.The hydrogen cracking resistance,pitting resistance,microstructure,and phase ratio of different welding layers of the joint were also studied.It is found that a reasonable welding process and strict process control can realize the two-phase proportional control of 2205 duplex stainless steel.2205 duplex stainless steel single-pass multi-layer combination welding process joint will be ensured to meet the relevant standards in terms of mechanical properties,hydrogen cracking resistance,and corrosion resistance.

关 键 词：2205双相不锈钢 组合焊工艺 耐点蚀性能 微观组织 

分 类 号：TG457.11[金属学及工艺—焊接]