Numerical simulation of the effects of oxygen as active element on weld transportation behavior in arc assisted activating TIG welding

	Numerical simulation of the effects of oxygen as active element on weld transportation behavior in arc assisted activating TIG welding
	Fan, Ding 2; Huang, Zicheng 2,3; Huang, Jiankang 2; Wang, Xinxin 1; Hao, Zhenni 4; Huang, Yong 2
刊名	Hanjie Xuebao/Transactions of the China Welding Institution
	2016-03-25
卷号	37 期号:3 页码:62-66
关键词	Chemical activation Computer simulation Flow of fluids Inert gas welding Mass transportation Newtonian liquids Numerical models Oxygen Surface tension Turbulence models Welds AA-TIG welding Activating TIG welding Concentration coefficients Incompressible Newtonian fluid Oxygen distribution Temperature coefficient Transmission behavior Uneven distribution
ISSN号	0253360X
英文摘要	In arc assisted activating TIG welding process, the base metal is pre-melted by an assisting arc along with mixture of argon and oxygen to form an oxide layer. After TIG welding, the weld penetration can be increased significantly. In this paper, two modes of uneven oxygen distribution at the surface of weld pool is proposed based on the experimental measurements; buoyance. A more sophisticated model of the weld pool in AA-TIG welding is developed, taking Lorentz force and surface tension into account. This model is developed to calculate the transportation hehavior of mass, momentum and energy in AA-TIG weld pool with the uneven oxygen distribution. In this paper, surface tension is a function of the temperature coefficient and the concentration coefficient of the surface tension. The fluid flow in the weld pool is assumed to be turbulence and incompressible Newtonian fluid. The model is based on the RNG k-Ε turbulence model. The experiments show that the calculated results agree well with measured value. © 2016, Harbin Research Institute of Welding. All right 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/113447]
专题	材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, Chongqing University of Technology, Chongqing; 400054, China; 2.School of Materials Science and Engineering Lanzhou University of Technology, Lanzhou; 730050, China; 3.College of Mechanical and Electrical Engineering, Anhui Engineering University, Wuhu; 241000, China; 4.Tangshan Kaiyuan Welding Automation Technology Institution, Tangshan; 063020, China
推荐引用方式 GB/T 7714	Fan, Ding,Huang, Zicheng,Huang, Jiankang,et al. Numerical simulation of the effects of oxygen as active element on weld transportation behavior in arc assisted activating TIG welding[J]. Hanjie Xuebao/Transactions of the China Welding Institution,2016,37(3):62-66.
APA	Fan, Ding,Huang, Zicheng,Huang, Jiankang,Wang, Xinxin,Hao, Zhenni,&Huang, Yong.(2016).Numerical simulation of the effects of oxygen as active element on weld transportation behavior in arc assisted activating TIG welding.Hanjie Xuebao/Transactions of the China Welding Institution,37(3),62-66.
MLA	Fan, Ding,et al."Numerical simulation of the effects of oxygen as active element on weld transportation behavior in arc assisted activating TIG welding".Hanjie Xuebao/Transactions of the China Welding Institution 37.3(2016):62-66.