Paper Title:
Research on Droplet Transfer of MIG Welding with Alternating Longitudinal Magnetic Field
  Abstract

The stress and motion state of droplet in MIG welding with alternating longitudinal magnetic field were analyzed, and the impact of alternating longitudinal magnetic field on the droplet transfer were studied by high-speed video camera. The results show that the droplet is spherical approximately and transfer to molten pool along the welding wire axis without external longitudinal magnetic field. When alternating longitudinal magnetic field was introduced into welding process, the droplet rotate around the welding wire clockwise and counter-clockwise alternately. Shape of droplet became flat and direction of transfer deviated from the welding wire axis under the action of magnetic field. As the exciting current increased, extent of deviation from the wire axis increases. When the exciting current is too large (I >20A), extent of deviation is too large and droplet are disintegrated into several small droplet during the transition. So droplet can not transfer into molten pool successfully and the bead can’t be formed.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
993-996
DOI
10.4028/www.scientific.net/AMR.189-193.993
Citation
S. Zhu, Q. W. Wang, F. L. Yin, Y. Y. Liang, X. M. Wang, "Research on Droplet Transfer of MIG Welding with Alternating Longitudinal Magnetic Field", Advanced Materials Research, Vols. 189-193, pp. 993-996, 2011
Online since
February 2011
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Price
$32.00
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