2020 №09 (07) DOI of Article
2020 №09 (01)

Automatic Welding 2020 #09
Avtomaticheskaya Svarka (Automatic Welding), #9, 2020, pp. 54-60

Processes occurring at excitation of the welding arc (Review)

N.M. Makhlin
SC «REC WCPE of the E.O. Paton Electric Welding Institute of the NAS of Ukraine». 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: electro@paton.kiev.ua

In view of the absence so far of a complete theory of the process of welding arc excitation, which could provide a convincing explanation of the entire totality of the known facts, some important theoretical and experimental data of different authors are considered as regards the processes of primary excitation of the welding arc in arc and plasma welding which is important for designing electronic boosting devices, which generate pulses of high and higher voltage that are injected into the interelectrode gap to ensure contactless primary and repeated excitations of the welding arc. Requirements to pulse parameters that are generated by these devices are given, which are obtained on the base of many investigations (including theoretical studies), experience of development and application of booster devices. Analytical expressions are proposed to create the theory of the process of d.c. welding arc excitation. 15 Ref.
Keywords: welding arc excitation at arc and plasma welding, glowing, spark and arc discharges, primary ignition voltage, repeated excitations of a.c. arc, combined devices - exciters-stabilizers, energy, amplitude, pulse duration

Received: 10.08.2020


1. (1986) Equipment for arc welding: Refer. book. Ed. by V.V. Smirnov. Leningrad, Energoatomizdat [in Russian].
2. Temkin, B.Ya. (1981) Theory and calculation of welding arc exciters. In: Syn. of Thesis for Cand. of Tech. Degree. Leningrad [in Russian].
3. Rajzer, Yu.P. (1987) Physics of gas discharge. Moscow, Nauka [in Russian].
4. Gvozdetsky, V.S. (1969) To the theory of cathode processes in electric arc. Avtomatich. Svarka, 1 (Pt 1), 33-37; 6, (Pt 2), 1–4 [in Russian].
5. (1980) Electrotechnical reference book. In: 3 Vol., Vol. 1: General problems. Electrotechnical materials. Ed. by V.G. Gerasimov, P.G. Grudinsky, L.A. Zhukova, et al. 6st Ed. Moscow, Energiya [in Russian].
6. Paton, B.E., Zaruba, I.I., Dymenko, V.V., Shatan, A.F. (2007) Welding power sources with pulsed stabilization of arc burning. Kiev, Ekotekhnologiya [in Russian].
7. Farson, D., Courardy, C., Talkington, J.et al. (1998) Arc initiation in gas metal arc welding. Welding Res. Supl., 8, 315–321.
8. Kesaev, I.G. (1968) Cathode processes in welding arcs. Moscow, Nauka [in Russian].
9. Krivtsun, I.V. (2018) Anode processes in welding arcs. The Paton Welding J., 11-12, 91-104. https://doi.org/10.15407/tpwj2018.12.10
10. Leskov, G.I. (1970) Electric welding arc. Moscow, Mashinostroenie [in Russian].
11. Leskov, G.I., Lugin, V.P. (1971) Investigation of voltage breakdown of gaps between welding electrodes. Svarochn. Proizvodstvo, 2, 10-11 [in Russian].
12. Makhlin, N.M. (2015) Peculiarities of contactless ignitions of alternating current arc. The Paton Welding J., 10, 29-35. https://doi.org/10.15407/tpwj2015.10.05
13. Weinshehk, H.E., Schellhase, M. (1971) Wiederzundugscharacteristiken von Schwießlichtbogen mit abschmelzen der Elektrode. ZIS-Mitt., 13(12), 1706–1720.
14. Korotynskyi, O.E. (2007) High-efficient power sources for arc welding on the base of inductive-capacitive transducers. In: Syn. of Thesis for Dr. of Tech. Sci. Degree. Kyiv [in Ukrainian].
15. Pokhodnya, I.K. (1967) Electrode melting and interaction of metal with gases in arc welding. In: Syn. of Thesis for Dr. of Tech. Sci. Degree. Kiev [in Russian].

Advertising in this issue: