Numerical Analysis of Gas Tungsten Arc Welding with a Constricted Nozzle for Butt Joint of Thin-Sheet Metals

Kyohei Konishi; Manabu Tanaka; Akihisa Murata; Tadasuke Murata

doi:10.4028/www.scientific.net/AMR.922.383

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 922Numerical Analysis of Gas Tungsten Arc Welding...

Numerical Analysis of Gas Tungsten Arc Welding with a Constricted Nozzle for Butt Joint of Thin-Sheet Metals

Abstract:

GTA (Gas Tungsten Arc) welding process has been studied as a higher level welding process. The “GTA welding process with constricted nozzle” is one of new welding processes [1]. In this new process, arc stiffness is greatly improved by attaching an additional gas nozzle which is called “constricted nozzle” inside the shielding gas nozzle. The design of a constricted nozzle is shown in Figure 1. With this new process, a butt joint of thin-sheet metals can be achieved although that is difficult with a conventional GTA welding process. In this study, numerical simulation is conducted to understand phenomena of arc plasma in a GTA welding process with a constricted nozzle scientifically.

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Periodical:

Advanced Materials Research (Volume 922)

Pages:

383-387

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.922.383

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Online since:

May 2014

Authors:

Kyohei Konishi*, Manabu Tanaka, Akihisa Murata, Tadasuke Murata

Keywords:

Constricted Nozzle, Gas Tungsten Arc Welding, Numerical Simulation, Phenomena of Arc Plasma, Thin-Sheet Metals

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