Analysis of arc and weld pool characteristics in direct current added-pulsed TIG welding process

doi:10.12073/j.hjxb.20210524003

	Analysis of arc and weld pool characteristics in direct current added-pulsed TIG welding process
	Zhang, Gang; Xu, Zilong; Wang, Kaifei; Zhu, Ming; Shi, Yu
刊名	Hanjie Xuebao/Transactions of the China Welding Institution
	2022-02-25
卷号	43 期号:2 页码:75-81
关键词	Corrosion Gas metal arc welding Gas welding Inert gas welding Inert gases Nuclear fuel reprocessing Welds Arc contraction Direct-current High frequency HF High frequency pulse TIG welding High-frequency pulse One-side welding One-side welding and back-side formation Pulse TIG welding Temperature field Weld pool
ISSN号	0253-360X
DOI	10.12073/j.hjxb.20210524003
英文摘要	In view of the technical requirements for rapid and reliable automatic welding repairment of defects such as corrosion cracks in the dissolver for spent fuel reprocessing, a direct current added-high-frequency pulsedd tungsten inert gas arc welding method was developed in this paper, and a series of bead on plate welding experiments with 10 and 16 mm thick plate were performed. Taking the variations of arc-weld pool characteristic as the research object, the arc characteristic, and the flow behavior and the temperature field evolution of weld pool of pulsedd TIG with adding direct current and without were compared, respectively. The mechanism of increasing weld penetration was discussed. The results show that the high-frequency pulsed current makes the arc to produce electromagnetic contraction, and the compressed degree and the weld penetration positively correlates to the pulsed frequency (1 ~ 5 kHz); the reason of the penetration increase in the direct current added- high-frequency pulsed welding process is that the direct current added pulsed arc increases the arc current and energy density and rises the surface liquid metal temperature of weld pool, and increases the electromagnetic stirring force of the molten pool to improve the flow intensify of molten pool, sufficient convection heat exchange, and enhances the thermal inertia of the molten pool, finally. This method is able to reliably realize the one-sided welding and back formation of the butt joint of 5 mm thick stainless-steel plates. Copyright © 2022 Transactions of the China Welding Institution. All rights reserved.
语种	中文
出版者	Harbin Research Institute of Welding
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158008]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
作者单位	State Key Laboratory of Advanced Processing and Recycling Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhang, Gang,Xu, Zilong,Wang, Kaifei,et al. Analysis of arc and weld pool characteristics in direct current added-pulsed TIG welding process[J]. Hanjie Xuebao/Transactions of the China Welding Institution,2022,43(2):75-81.
APA	Zhang, Gang,Xu, Zilong,Wang, Kaifei,Zhu, Ming,&Shi, Yu.(2022).Analysis of arc and weld pool characteristics in direct current added-pulsed TIG welding process.Hanjie Xuebao/Transactions of the China Welding Institution,43(2),75-81.
MLA	Zhang, Gang,et al."Analysis of arc and weld pool characteristics in direct current added-pulsed TIG welding process".Hanjie Xuebao/Transactions of the China Welding Institution 43.2(2022):75-81.