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http://dx.doi.org/10.5207/JIEIE.2008.22.10.141

Improvement of Welding Performance of MIG Arc Welding using Superposition Ac Pulse  

Kim, Tae-Jin (한국전기연구원 신재생에너지연구그룹)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.22, no.10, 2008 , pp. 141-149 More about this Journal
Abstract
Because aluminum has a lighter weight and higher strength than iron, it is frequently used in the transportation industry for the purpose of reducing the weight of a chassis, and thereby increasing fuel efficiency. However, there are some difficulties with arc welding aluminum due to its lower melting point, high thermal conductivity and oxidation coating on its surface. This study proposed using superposition ac pulse MIG arc welding, which has been improved from the pulse waveform of conventional MIG welding. A MIG arc welding power source was developed to test the effectiveness of this method.
Keywords
MIG Arc Welding; Welding Current Control; Superposition Ac Pulse; Penetration Control;
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