The mechanism of effect of flux bands on the arc behavior in flux bands constricting arc welding process

doi:10.3390/ma13071652

	The mechanism of effect of flux bands on the arc behavior in flux bands constricting arc welding process
	Wang, Lei 1,2; Qiao, Jisen 1,2; Chen, Jianhong 1,2
刊名	Materials
	2020-04-01
卷号	13 期号:7
关键词	Electric arcs Gas metal arc welding Slags Welds Arc behavior Arc stability Narrow gap welding T joints Weld formation
DOI	10.3390/ma13071652
英文摘要	A new welding method, flux bands constricting arc (FBCA) welding, is proposed to compensate for the shortage of insufficient weld width of laser welding T-joints in high steel sandwich panels. The arc behavior (arc burning position, arc shape, arc heat, and arc stability) before and after sticking the flux bands (GMAW and FBCA welding) to the ultra-narrow gap groove was tested. Results indicate that flux bands have solid-wall constricting effect (SWCE) and thermo-compression effect (TCE) on the arc and self-producing slag and gas function in FBCA welding. In ultra-narrow gap groove, the arc burning position climbing up phenomenon (APCP) occurs without flux bands. The SWCE of flux bands on the arc effectively suppresses the APCP because of the insulation of flux bands. In the FBCA welding process, the effective heating area of the arc is increased by at least 5 mm2 compared with that in GMAW. When the groove gap decreases, flux bands not only compress the arc from an inverted bell shape to a rectangular shape, but also make the 660 °C isotherm on the core-plate to increase from 3 mm to 8 mm. In the end, the proportion of unstable arc burning time is reduced by 86.85%, the fluctuation of arc voltage and welding current are also significantly reduced by the flux bands because of their SWCE on the arc. © 2020 by the authors.
语种	英语
出版者	MDPI AG
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115042]
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	1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Wang, Lei,Qiao, Jisen,Chen, Jianhong. The mechanism of effect of flux bands on the arc behavior in flux bands constricting arc welding process[J]. Materials,2020,13(7).
APA	Wang, Lei,Qiao, Jisen,&Chen, Jianhong.(2020).The mechanism of effect of flux bands on the arc behavior in flux bands constricting arc welding process.Materials,13(7).
MLA	Wang, Lei,et al."The mechanism of effect of flux bands on the arc behavior in flux bands constricting arc welding process".Materials 13.7(2020).