The Paton Welding Journal, 2005, №07

2005 №07 (12)

2005 №07 (02)

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The Paton Welding Journal, 2005, #7, 2-7 pages

Contraction of the tungsten cathode welding arc in inert gas mixtures

P.V. Poritsky, V.P. Prilutsky, V.N. Zamkov

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
Effect of physical characteristics of mixtures of inert gases on contraction of the positive arc column was studied. It is shown that variation in the concentration of mixture components has a substantial impact on their thermal-physical properties and general characteristics of electron-atom collisions, which determine electrophysical parameters of the arc under its specific burning conditions. In this connection, contraction of the welding arc burning at tungsten cathode in inert gas mixtures greatly depends upon the proportion of the mixture components. Contraction of the arc discharge in a specific gas mixture was found to be most significant with a gas thermal conductivity dominating in the heat removal process.
Keywords: TIG welding, Ramsauer effect, welding arc, tungsten cathode, inert gas mixture, thermal contraction, gas thermal conductivity

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Suggested Citation

P.V. Poritsky, V.P. Prilutsky, V.N. Zamkov (2005) Contraction of the tungsten cathode welding arc in inert gas mixtures. The Paton Welding J., 07, 2-7.

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