Numerical Simulation of Metal Vapour Behavior in Double Electrodes TIG Welding

doi:10.1007/s11090-018-9904-4

	Numerical Simulation of Metal Vapour Behavior in Double Electrodes TIG Welding
	Wang, X.1,2; Luo, Y.1,2; Wu, G.1,2; Chi, L.1,2; Fan, D.3,4
	2018-09
发表期刊	PLASMA CHEMISTRY AND PLASMA PROCESSING
ISSN	0272-4324
卷号	38 期号:5 页码:1095-1114
摘要	Metal vapour from the weld pool in double electrodes tungsten inert gas welding is taken into account by a unified numerical model including the arc plasma and the weld pool. The thermodynamic properties and transport coefficients of the arc plasma are dependent on both the local temperature and the mass fraction of the metal vapour. A second viscosity approximation is used to describe the diffusion coefficient of the metal vapour in the arc plasma. The temperature and the flow fields of both the arc plasma and the weld pool are calculated together with the metal vapour concentration. The simulated results are presented for the cases of 3 and 9 mm electrode separation, respectively. It is shown that the metal vapour behavior is much different in these two cases. In the case of 3 mm electrode separation, the metal vapour above the mass fraction of 0.2% is concentrated just above the weld pool surface, while in the case of 9 mm electrode separation, the metal vapour is diffused to the most region of the arc plasma for the same range of mass fraction. In addition, the arc plasma temperature as well as the heat flux at the weld pool is constricted by the presence of the metal vapour. The constricted heat flux at the weld pool results in an increase in the temperature of the weld pool about 100 K or less but a slight shrinkage of the weld pool shape.
关键词	Metal vapour Double electrodes Welding Numerical simulation
DOI	10.1007/s11090-018-9904-4
收录类别	SCI ; SCIE
语种	英语
资助项目	Scientific and Technological Research Program of Chongqing Municipal Education Commission[KJ1600903] ; Scientific and Technological Research Program of Chongqing Municipal Education Commission[KJ1709197]
WOS研究方向	Engineering ; Physics
WOS类目	Engineering, Chemical ; Physics, Applied ; Physics, Fluids & Plasmas
WOS记录号	WOS:000440061900012
出版者	SPRINGER
EI入藏号	20181905177751
EI主题词	Gas welding
EI分类号	538 Welding and Bonding - 641.1 Thermodynamics - 641.2 Heat Transfer - 723.5 Computer Applications - 804.2 Inorganic Compounds - 921 Mathematics
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/32494
专题	材料科学与工程学院
通讯作者	Wang, X.
作者单位	1.Chongqing Univ Technol, Sch Mat Sci & Engn, Chongqing 400054, Peoples R China; 2.Chongqing Municipal Engn Res Ctr, Higher Educ Inst Special Welding Mat & Technol, Chongqing 400054, Peoples R China; 3.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China; 4.State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, X.,Luo, Y.,Wu, G.,et al. Numerical Simulation of Metal Vapour Behavior in Double Electrodes TIG Welding[J]. PLASMA CHEMISTRY AND PLASMA PROCESSING,2018,38(5):1095-1114.
APA	Wang, X.,Luo, Y.,Wu, G.,Chi, L.,&Fan, D..(2018).Numerical Simulation of Metal Vapour Behavior in Double Electrodes TIG Welding.PLASMA CHEMISTRY AND PLASMA PROCESSING,38(5),1095-1114.
MLA	Wang, X.,et al."Numerical Simulation of Metal Vapour Behavior in Double Electrodes TIG Welding".PLASMA CHEMISTRY AND PLASMA PROCESSING 38.5(2018):1095-1114.

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