TPWJ, 2018, #3, 12-15 pages
Effect of own magnetic fields on electric arcs in tandem-arc welding
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #3, 2018 (March)
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
Considered is an effect of own magnetic fields on spatial position of arcs appearing in their deviation from electrode axial lines in automatic tandem-arc welding. The main aim of work is obtaining the dependencies of indicated deviations from arc lengths and welding currents in analytical form. In scope of this problem the conditions were found that limit a relationship between welding currents. Their neglecting can result in «adhesion» of arcs or their extinction in process of welding. In particular, the relationship between height («amplitude») of welding current pulse of one arc and basic current of another one should not exceed specific limit in pulse tandem-arc consumable electrode welding. The work is illustrated by the examples. 9 Ref., 1 Figure.
tandem-arc welding, consumable electrode, electromagnetic interaction of arcs
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