摇动电弧窄间隙自由成形打底焊工艺研究  

Research on swing arc narrow gap free forming root welding process

作　　者：朱杰[1] 王世超 王加友[1] 姜玉清 胥国祥[1] 果琨皓 ZHU Jie;WANG Shichao;WANG Jiayou;JIANG Yuqing;XU Guoxiang;GUO Kunhao(Jiangsu Provincial Key Laboratory of Advanced Welding Technology,Jiangsu University of Science and Technology,Zhenjiang 212100,China)

机构地区：[1]江苏科技大学,江苏省先进焊接技术重点实验室,镇江212100

出　　处：《江苏科技大学学报（自然科学版）》2024年第2期36-40,共5页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金项目(51905232,51875268);江苏科技大学博士科研启动基金。

摘　　要：针对厚板坡口根部焊接难的问题,文中提出了一种采用摇动电弧的窄间隙坡口自由成形打底焊接方法,通过控制电弧做圆弧形轨迹摇动来调整电弧热分布,使焊接熔池自由凝固成形.进行了摇动电弧窄间隙自由成形打底焊接试验,研究了电弧摇动参数对打底焊缝自由成形的影响.结果表明:电弧摇动参数能显著影响打底焊缝自由成形,过小的摇动参数易使打底焊缝烧穿,适当增大电弧摇动参数可增强坡口侧壁与根部的熔透,过大的摇动参数会产生未焊透缺陷.In view of the difficulty in root welding for thick plate grooves,this paper proposes a narrow gap free forming root welding method by swing arc,which adjusts the arc heat distribution by controlling the arc to swing circularly,so that the welding pool can solidify and form freely.The swing arc narrow gap free forming root welding experiments are carried out,and the influence of swing parameters on free forming root weld is investigated.The results indicate that the arc swing parameters significantly affect the free forming of root weld.The root weld is easy to be burnt through when the swing parameters are too small,and the penetration of groove sidewall and root can be enhanced by appropriately increasing the arc swing parameters.However,great swing parameters will lead to incomplete penetration defects.

关 键 词：摇动电弧 窄间隙熔化极电弧焊 打底焊接 自由成形 

分 类 号：TG444[金属学及工艺—焊接]