GTAW liquid pool convections and the weld shape variations under helium gas shielding

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	GTAW liquid pool convections and the weld shape variations under helium gas shielding
	W. C. Dong; S. P. Lu; D. Z. Li; Y. Y. Li
	2011
发表期刊	International Journal of Heat and Mass Transfer
ISSN	0017-9310
卷号	54 期号:7-8 页码:1420-1431
摘要	The effect of the active element oxygen and the welding parameters (welding speed, welding current and electrode gap) on the liquid pool convections and the weld shape variations under helium gas shielding is systematically investigated using a mathematical model of the welding arc and weld pool during a moving GTAW of SUS304 stainless steel. Different welding parameters will change the temperature distribution on the pool surface, and affect the strength of the Marangoni convection and the weld shape. The inward convection induced by the electromagnetic force is contributive to the increase of the weld depth. A higher welding speed, lower welding current or larger electrode gap will make the weld D/W ratio decrease when the oxygen content in the weld pool is high. Under low oxygen content, a lower welding speed, welding current or shorter electrode gap will lead to a higher weld D/W ratio. The predicted weld D/W ratio by simulation agrees well with the experimental results. (C) 2010 Elsevier Ltd. All rights reserved.
部门归属	[dong, wenchao; lu, shanping; li, dianzhong; li, yiyi] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;lu, sp (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;shplu@imr.ac.cn
关键词	Gtaw Convection Weld Shape Helium Welding Arc Welding Parameter Marangoni Convection Electric-arc Numerical-simulation Activating Flux Oxygen-content Flow Patterns Heat-transfer Phase-change Penetration Model
URL	查看原文
WOS记录号	WOS:000287279600013
引用统计	被引频次：46[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/321006/30308
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. C. Dong,S. P. Lu,D. Z. Li,et al. GTAW liquid pool convections and the weld shape variations under helium gas shielding[J]. International Journal of Heat and Mass Transfer,2011,54(7-8):1420-1431.
APA	W. C. Dong,S. P. Lu,D. Z. Li,&Y. Y. Li.(2011).GTAW liquid pool convections and the weld shape variations under helium gas shielding.International Journal of Heat and Mass Transfer,54(7-8),1420-1431.
MLA	W. C. Dong,et al."GTAW liquid pool convections and the weld shape variations under helium gas shielding".International Journal of Heat and Mass Transfer 54.7-8(2011):1420-1431.

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文件名称/大小	文献类型	版本类型	开放类型	使用许可
GTAW liquid pool con（2285KB）			开放获取	--