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2015 №10 (04) DOI of Article
10.15407/tpwj2015.10.05 		2015 №10 (06)

The Paton Welding Journal 2015 №10


The Paton Welding Journal, 2015, #10, 29-35 pages
 

Peculiarities of contactless ignitions of alternating current arc

N.M. Makhlin


SE Research Engineering Center of Welding and Control in Power Engineering of E.O. Paton Electric Welding Institute, NASU 11 Bozhenko Str., 03680, Kiev, Ukraine. E-mail: electro@paton.kiev.ua
 
 
Abstract
Considered are some important peculiarities of processes of contactless initial and repeated ignitions of alternating current arc in arc and plasma welding as well as electron voltage boosters. The latter generate the pulses of high and increased voltage being injected in inter-electrode gap for process realizing. It is shown that the most reasonable way for improvement of arc exciters and stabilizers is development of voltage boosters so called exciter-stabilizers. They differ by possibility to function in initial and repeated arc ignition modes, i.e. in the mode of stabilizing of alternating current arc burning. Optimized requirements on parameters of pulses generated by these devices are given based on multiple investigations, experience of development and application of voltage boosters. Some peculiarities of designing of combined arc exciter-stabilizers are considered. 32 Ref., 2 Tables.
 
Keywords: arc and plasma welding, alternating current, arc stability, glow and arc discharge, ignition voltage, electron arc exciter-stabilizers, energy, amplitude and duration of pulses
 
 
Received:                13.05.15
Published:               01.12.15
 
 
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