Magnetic forces acting on molten drops in gas metal arc welding
- 1 January 1998
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 31 (1), 93-106
- https://doi.org/10.1088/0022-3727/31/1/013
Abstract
In gas metal arc welding, magnetic forces arising from the interaction of the welding current with its own magnetic field play an important role in the detachment of drops from the molten welding electrode. These forces drive the dynamic evolution of the drop and also depend on the instantaneous shape of the drop. In this paper, experimentally observed manifestations of magnetic forces are shown and a technique for approximating the temporal evolution of the axial magnetic force from experimentally measured drop shapes is reported. The technique provides quantitative data illustrating the large increase in the magnetic forces when a drop detaches from the electrode.Keywords
This publication has 5 references indexed in Scilit:
- A dynamic model of drops detaching from a gas metal arc welding electrodeJournal of Physics D: Applied Physics, 1998
- The effect of the type of plasma gas on current constriction at the molten tip of an arc electrodeJournal of Physics D: Applied Physics, 1996
- Lorentz force in the molten tip of an arc electrodeBritish Journal of Applied Physics, 1965
- Heat Intensity and Current Density Distributions at the Anode of High Current, Inert Gas ArcsJournal of Applied Physics, 1962
- Plasmastr mungen in Lichtb gen infolge eigenmagnetischer KompressionThe European Physical Journal A, 1955