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Contents of the issue

2018 №03 (01) DOI of Article
2018 №03 (03)

Automatic Welding 2018 #03
Avtomaticheskaya Svarka (Automatic Welding), № 3, 2018, pp. 13-17

Effect of own magnetic fields on electric arcs in tandem-arc welding

G. A. Tsybulkin

E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazimir Malevich Str., 03150, Kyiv. E-mail: office@paton.kiev.ua
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 on 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 arc «adhesion» or their extinction in process of welding. In particular, the relationship between height («amplitude») of welding  current of one arc and basic current of another one should not exceed specific limit in pulse tandem-arc consumable electrode welding. 9 Ref., 1 Fig.
Keywords: tandem-arc welding, consumable electrode, electromagnetic interaction of arcs

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