In situ experimental measurement of temperature field and surface tension during pulsed GMAW

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• 作者：R. Monier ; F. Thumerel ; J. Chapuis ; P. Gilles ; F. Soulié…
• 刊名：Welding in the World
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：60
• 期：5
• 页码：1021-1028
• 全文大小：943 KB
• 刊物主题：Metallic Materials; Continuum Mechanics and Mechanics of Materials; Theoretical and Applied Mechanics;
• 出版者：Springer Berlin Heidelberg
• ISSN：1878-6669
• 卷排序：60

文摘

In this paper, non-contact measurements are presented to observe droplet oscillations and to measure surface temperature during Pulsed GMAW. The techniques enable to investigate in situ the behavior of mild steel liquid metal surrounded by Ar + 8%CO2 plasma and then to measure temperature dependence of surface tension. Different temperatures are obtained by changing the process parameters. Surface tension values are a little higher than values found in the literature but the results demonstrate the interest of the developed setup. To conclude, a non-dimensional analysis is carried out, based on experimental results, to investigate the relative importance of the different phenomena acting during the transfer.Keywords (IIW Thesaurus)Pulsed arc weldingGMA weldingSurface tensionTemperatureSteelsMetal transferReal time operationsImaging