Mechanisms increasing welding efficiency during new development of double shielded TIG process

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	Mechanisms increasing welding efficiency during new development of double shielded TIG process
	D. J. Li ; S. P. Lu ; D. Z. Li ; Y. Y. Li
刊名	Science and Technology of Welding and Joining
	2010
卷号	15 期号:6 页码:528-533
关键词	Double shielded Marangoni convection Welding parameters Oxygen content marangoni convection numerical-simulation deep penetration shape variations activating flux oxide fluxes gas gta oxygen geometry
ISSN号	1362-1718
中文摘要	A new welding method has been developed for the tungsten inert gas process which can both improve the weld depth/width (D/W) ratio and protect the electrode from oxidation during the welding process. The effects of the welding parameters and the Marangoni convection patterns on the weld pool shapes are discussed. Results showed that the change of welding parameters directly change the temperature distribution on the pool surface and the concentration addition of the surface active element, hence, eventually affect the pattern and strength of the Marangoni convection. For the liquid pool on stainless steel, the weld shapes depends to a large extent on the pattern and strength of the Marangoni convection. It is possible to generate a heavy oxide layer on pool surface under a relatively high oxygen content to affect the surface tension stress. The heavy oxide layer may inhibit the heat flow on the weld pool surface, and reduce the D/W ratio.
原文出处	://WOS:000282748200015
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31206]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	D. J. Li,S. P. Lu,D. Z. Li,et al. Mechanisms increasing welding efficiency during new development of double shielded TIG process[J]. Science and Technology of Welding and Joining,2010,15(6):528-533.
APA	D. J. Li,S. P. Lu,D. Z. Li,&Y. Y. Li.(2010).Mechanisms increasing welding efficiency during new development of double shielded TIG process.Science and Technology of Welding and Joining,15(6),528-533.
MLA	D. J. Li,et al."Mechanisms increasing welding efficiency during new development of double shielded TIG process".Science and Technology of Welding and Joining 15.6(2010):528-533.