Thermal and force effects of the arc on the weld pool in non-consumable electrode (TIG) welding in inert gas mixtures

Savinov, A. V.; Lapin, I. E.; Polesskiy, O. A.; Lysak, V. I.; Krasikov, P. P.

doi:10.1080/09507116.2016.1157332

Cited by 1 publication

(1 citation statement)

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“…Nowadays, numerous numerical models and experimental trials try to describe the complex phenomena present in a DC electric arc used for arc welding. From the great diversity of research works studying the electric arcs, there are those focused in the material and shape of the electrodes [1,2], shielding gases [3,4], weld pool depression [5,6], and metallic vapor formation [7,8], among many other subjects. These works have helped to gain significant insights into the physical phenomena and contribute to technological advances in arc welding processes.…”

Section: Introductionmentioning

confidence: 99%

Generalized representation of arc shape, arc column characteristics and arc-weld pool interactions for DC electric arcs burning in monoatomic gases

Delgado-Álvarez¹,

Méndez²,

Murphy³

et al. 2020

J. Phys. D: Appl. Phys.

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The shape of a DC electric arc in arc welding with monoatomic shielding gases (Ar, He and Ar/He blends) is generalized in dimensionless form with algebraic correlations. The novel expressions capture the main magnetohydrodynamic arc characteristics (temperature, velocity, magnetic field) and also yield the main arc-weld-pool interactions (heat flux, current density and pressure). The proposed correlations are validated against numerical results presented in this work and numerical and experimental results found in the literature. Simulated electric arcs conditions considered include arc currents and arc lengths in the range of 200-300 A and 5-10 mm respectively, burning in Ar and Ar-He mixtures and arc lengths ranging from 7-10 mm for He.

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