Development of ultra-narrow gap welding with constrained arc by flux band

	Development of ultra-narrow gap welding with constrained arc by flux band
	Zhu, Liang; Zheng, Shaoxian; Chen, Jianhong
	2006-06-01
发表期刊	China Welding (English Edition)
ISSN	10045341
卷号	15 期号:2 页码:44-49
摘要	Narrow gap welding has merits of lower residual stress and distortion, and superior mechanical properties of joints. A major problem of this process is the lack of fusion in sidewalls, hence many methods of weaving arc have been developed to increase heating effect of arc to the sidewalls. In this work, a new approach without weaving arc is attempted to ensure the penetration of sidewall, and ultra-narrow gap welding with the gap of less than 5 mm was executed successfully. In this approach, the width of gap is decreased further, so that the sidewalls are made within range of arc heating to obtain the enough heat. In order to prevent the arc from being attracted by sidewall and going up along the sidewalls, two pieces of flux bands consisting of the specified aggregates are adhered to the sidewalls to constrain the arc. In addition, when flux band being heated by the arc, slag and gases are formed to shield the arc and the weld pool. This technique was tested on the welding experiment of pipeline steel with thickness of 20 mm. The involved welding parameters were obtained, that is, the width of gap is 4 mm, the welding current 250 A, and the heat input 0.5 kJ/mm, the width of heat-affected zone is 1-2mm.
关键词	Hardness Heat affected zone Heating Mechanical properties Pipelines Residual stresses Soldered joints Steel Flux band Metal arc welding Narrow gap welding
收录类别	EI
语种	英语
出版者	China Welding
EI入藏号	20063810123484
EI主题词	Electric arc welding
EI分类号	421 Strength of Building Materials ; Mechanical Properties - 538.2.1 Welding Processes - 545.3 Steel
来源库	Compendex
分类代码	421 Strength of Building Materials; Mechanical Properties - 538.2.1 Welding Processes - 545.3 Steel
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/111954
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院材料科学与工程学院_特聘教授组
作者单位	State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Zhu, Liang,Zheng, Shaoxian,Chen, Jianhong. Development of ultra-narrow gap welding with constrained arc by flux band[J]. China Welding (English Edition),2006,15(2):44-49.
APA	Zhu, Liang,Zheng, Shaoxian,&Chen, Jianhong.(2006).Development of ultra-narrow gap welding with constrained arc by flux band.China Welding (English Edition),15(2),44-49.
MLA	Zhu, Liang,et al."Development of ultra-narrow gap welding with constrained arc by flux band".China Welding (English Edition) 15.2(2006):44-49.