Numerical simulation for welding pool and welding arc with variable active element and welding parameters

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	Numerical simulation for welding pool and welding arc with variable active element and welding parameters
	S. P. Lu; W. C. Dong; D. Z. Li; Y. Y. Li
	2009
发表期刊	Science and Technology of Welding and Joining
ISSN	1362-1718
卷号	14 期号:6 页码:509-516
摘要	A numerical modelling of the welding arc and weld pool is established for moving argon shielded gas tungsten arc welding to systematically investigate the effect of the active element oxygen and the welding parameters on the Marangoni convection and the weld shape using FLUENT software. The different welding parameters will change the temperature distribution and gradient on the pool surface, and affect the strength of Marangoni convection and the weld shape. Under high oxygen content, the weld depth/width (D/W) ratio substantially depends on the welding parameters. A high welding speed or large electrode gap (arc length) will make the weld D/W ratio decrease. The weld D/W ratio initially increases and then remains constant around 0.5 with the increasing welding current. When the oxygen content is lower, the weld D/W ratio decreases with the increasing welding current. However, the weld D/W ratio is not sensitive to the welding speed or electrode gap. The predicted weld D/W ratio agrees well with the experimental results.
部门归属	[lu, s. p.; dong, w. c.; li, d. z.; li, y. y.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;lu, sp (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;shplu@imr.ac.cn
关键词	Numerical Simulation Oxygen Welding Parameter Marangoni Convection Weld Shape Type-304 Stainless-steel Marangoni Convection Activating Flux Flow Patterns Oxide Fluxes Gta Penetration Metal Shape Oxygen
URL	查看原文
WOS记录号	WOS:000268119700004
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32157
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. P. Lu,W. C. Dong,D. Z. Li,et al. Numerical simulation for welding pool and welding arc with variable active element and welding parameters[J]. Science and Technology of Welding and Joining,2009,14(6):509-516.
APA	S. P. Lu,W. C. Dong,D. Z. Li,&Y. Y. Li.(2009).Numerical simulation for welding pool and welding arc with variable active element and welding parameters.Science and Technology of Welding and Joining,14(6),509-516.
MLA	S. P. Lu,et al."Numerical simulation for welding pool and welding arc with variable active element and welding parameters".Science and Technology of Welding and Joining 14.6(2009):509-516.