Topic
Shielding gas
About: Shielding gas is a research topic. Over the lifetime, 6697 publications have been published within this topic receiving 58668 citations.
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Patent•
17 Aug 1988TL;DR: A gas metal arc welding process employing a shielding gas mixture consisting essentially of (A) 2 to 12 volume percent carbon dioxide, (B) 20 to 45 volume percent helium and (C) the balance argon is described in this article.
Abstract: A gas metal arc welding process employing a shielding gas mixture consisting essentially of (A) 2 to 12 volume percent carbon dioxide, (B) 20 to 45 volume percent helium and (C) the balance argon.
22 citations
TL;DR: In this paper, the E.O. Paton Electric Welding Institute for TIG welding of titanium over the flux layer and by using a flux-cored wire are described in detail.
Abstract: The paper analyses peculiarities of using arc welding methods for making permanent joints on titanium and titanium-base alloys. The technologies developed by the E.O. Paton Electric Welding Institute for TIG welding of titanium over the flux layer and by using a flux-cored wire are described in detail. Metallurgical and technological principles of the titanium arc welding processes are considered, and ways of improving their efficiency and weld quality are presented. Special attention is given to analysis of factors that cause increase in operational characteristics of the arc and, in particular, increase in the penetration depth. It is assumed that increase in the penetration depth is caused by growth of the Lorentz force due to contraction of the arc by flux and increase in current density in the anode region.
22 citations
Journal Article•
TL;DR: In this article, the arc and metal transfer instability in GMA welding was analyzed and the instability process was associated with abrupt changes in arc current and voltage levels and could seriously affect operation by causing repulsive globular transfer in short circuiting conditions.
Abstract: This paper analyzes arc and metal transfer instability phenomena in GMA welding that depend on arc length, the oxidizing potential of the shielding gas and the power supply V/I characteristic. The instability process was associated with abrupt changes in arc current and voltage levels and could seriously affect operation by causing repulsive globular transfer in short circuiting conditions. As instability effects were observed for oxygen levels up to approximately 2%, it can be significant in applications that demand a how oxidizing gas media, as in the welding of alloy steels and nonferrous alloys. The experimental program consisted of two sets of trials using either constant voltage or constant current operation
22 citations
01 Jun 2015
TL;DR: In this article, the effect of filler metal on the mechanical and microstructure properties of dissimilar aluminium alloys of 5083-O and 6061-T6 welded using metal inert gas welding was investigated.
Abstract: This work studies the effect of filler metal on the mechanical and microstructure properties of dissimilar aluminium alloys of 5083-O and 6061-T6 welded using metal inert gas welding. The metal ine...
22 citations