尖角磁场对TIG电弧及焊缝成形的影响  

Effect of sharp angular magnetic field on TIG arc and weld formation

作　　者：常云龙[1] 张洪旭 关子奇 刘晓光[2] CHANG Yun-long;ZHANG Hong-xu;GUAN Zi-qi;LIU Xiao-guang(School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,China;Guangdong Institute of Intelligent Manufacturing,Guangdong Academy of Sciences,Guangzhou 510070,China)

机构地区：[1]沈阳工业大学材料科学与工程学院,沈阳110870 [2]广东省科学院广东省智能制造研究所,广州510070

出　　处：《沈阳工业大学学报》2021年第5期505-508,共4页Journal of Shenyang University of Technology

基　　金：国家自然科学基金项目(51575362);沈阳市“双百”项目(Z17-5-070).

摘　　要：为了研究尖角磁场对TIG焊接过程的影响,采用小孔探针法和高速摄影法对不同频率尖角磁场作用下的TIG焊电弧压力与电弧形态进行了研究,并分析了磁场频率对焊缝成形质量的影响.结果表明,电弧压力整体呈正态分布,电弧压力随频率的改变呈单峰对称分布.随着磁场频率的增加,电弧边缘电弧压力出现小幅度波动,电弧中心压力值最大,电弧边缘压力较小.电弧形态随着磁场频率的增加而发生旋转收缩现象,焊缝的熔深变大,熔宽变小.In order to study the influence of sharp angular magnetic field on TIG welding process,the arc pressure and arc shape of TIG welding under the influence of sharp angular magnetic field with different frequencies were studied by means of small-hole probe method and high-speed photography,and the influence of magnetic field frequency on weld forming quality was analyzed.The results show that the overall arc pressure is normally distributed,and the arc pressure exhibits a single-peak symmetrical distribution with respect to the change of frequency.With the increase of magnetic field frequency,the arc pressure at arc edge slightly fluctuates,the pressure value at arc center is the largest,while the arc edge pressure is relatively small.Arc shape rotates and shrinks with the increase of magnetic field frequency,the weld depth becomes larger,but the weld width becomes smaller.

关 键 词：尖角磁场 探针法 高速摄影 频率 TIG焊 电弧压力 电弧形态 焊缝成形 

分 类 号：TG446[金属学及工艺—焊接]