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Advances in Materials Science and Engineering
Volume 2013, Article ID 937094, 5 pages
http://dx.doi.org/10.1155/2013/937094
Research Article

Arc Interference Behavior during Twin Wire Gas Metal Arc Welding Process

Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240, China

Received 16 August 2013; Revised 11 November 2013; Accepted 11 November 2013

Academic Editor: Caner Simsir

Copyright © 2013 Dingjian Ye et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In order to study arc interference behavior during twin wire gas metal arc welding process, the synchronous acquisition system has been established to acquire instantaneous information of arc profile including dynamic arc length variation as well as relative voltage and current signals. The results show that after trailing arc (T-arc) is added to the middle arc (M-arc) in a stable welding process, the current of M arc remains unchanged while the agitation increases; the voltage of M arc has an obvious increase; the shape of M arc changes, with increasing width, length, and area; the transfer frequency of M arc droplet increases and the droplet itself becomes smaller. The wire extension length of twin arc turns out to be shorter than that of single arc welding.