超厚壁压力容器的焊接工艺研究  

Research on Welding Technology of Ultra-Thick Wall Pressure Vessel

作　　者：崔凤清 李忠杰 CUI Fengqing;LI Zhongjie(Shanghai Electric Nuclear Power Equipment Co.,Ltd.,Shanghai 201306,China)

机构地区：[1]上海电气核电集团有限公司,上海201306

出　　处：《锅炉技术》2024年第4期51-56,共6页Boiler Technology

摘　　要：为了研究超厚壁20MnMoNb材料的焊接特性,采用专用匹配焊材和焊接工艺进行了工艺性试验研究。基于20MnMoNb材料特性和焊接工艺性,分析确定了焊接材料、焊接坡口、焊接规范参数及中间热处理、最终热处理规范,对焊缝进行了无损检验和力学性能分析,焊接接头性能满足NB/T47014—2023的考核要求。In order to study the welding characteristics of ultra-thick wall 20MnMoNb material,process experiments were conducted using specialized matching welding materials and welding processes.Based on the characteristics of 20MnMoNb material and welding process,the welding material,welding groove,welding specification parameters,intermediate heat treatment,and final heat treatment specifications were analyzed and determined.Nondestructive testing and mechanical performance analysis were conducted on the weld seam,and the welding joint performance met the requirements of NB/T 47014—2023.

关 键 词：超厚壁 20MnMoNb材料 焊接工艺 热处理方案 焊接坡口方案 

分 类 号：TK226[动力工程及工程热物理—动力机械及工程]