压力管道工程中有关焊接诸多认知误区和盲区浅析(一)——焊接接头  

Analysis of Many Cognitive Misunderstandings and Blind Zone about Welding in Pressure Pipeline Engineering(1)-Welding Joint

作　　者：应道宴 汤晓英[2] 尤子涵 余鑫萍 Ying Daoyan;Tang Xiaoying;You Zihan;Yu Xinping(National Technology Center of Process Equipment,Shanghai 200040,China;Shanghai Institute of Special Equipment Inspection and Technical,Shanghai 200333,China;SINOPEC Shanghai Engineering Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]全国化工设备设计技术中心站,上海200040 [2]上海市特种设备监督检验技术研究院,上海200333 [3]中石化上海工程有限公司,上海200120

出　　处：《化工设备与管道》2024年第4期85-91,共7页Process Equipment & Piping

摘　　要：焊接接头形式和焊缝形式是两个不同概念,而压力管道单面焊焊接接头要达到相当于双面焊同样质量要求是一个综合性的问题,主要涉及焊接方法、母材类别、焊接材料、焊接位置、预热、背面充气保护、热处理、电特性及技术措施等9个因素的影响,同时也与焊工技能有关。熟练焊工按照合格的焊接工艺评定进行施焊、加强焊缝目视检测(VT),尤其是焊接接头坡口加工和焊道VT检测是保障质量的重要要素。Welding joint form and weld seam form are two different concepts,and achieving the same quality requirements as double-sided welding for pressure pipeline single-sided welding joints is a comprehensive issue,mainly involving nine factors such as welding method,base material category,welding material,welding position,preheating,back gas inflation protection,heat treatment,electrical characteristics,and technical measures,and also related to welder skills.Skilled welders perform welding according to qualified welding process qualifications,strengthen visual inspection(VT)of welds,especially in the processing of welding joint grooves and VT inspection of weld beads,which are important elements to ensure quality.

关 键 词：压力管道焊接 焊接接头 焊缝 单面焊 双面焊 坡口准备 目视检测 不锈钢焊管 

分 类 号：TH49[机械工程—机械制造及自动化]