Effect of external longitudinal magnetic field on arc plasma characteristics and droplet transfer during laser-MIG hybrid welding

Effect of external longitudinal magnetic field on arc plasma characteristics and droplet transfer... The arc plasma behavior and droplet transfer are investigated using laser-MIG (metal insert gas) hybrid welding assisted by an external longitudinal magnetic field. The characteristic of arc plasma and droplet transfer can be recorded via combining sensing of the welding current and arc voltage with a high-speed imaging. Results indicated that the external longitudinal magnetic field had a significant impact on the arc shape, droplet formation, droplet size, and detaching. Under the magnetic field, the arc shape became a triangle gradually, and the off-axis arc and droplet gradually pointed to the axis of the filler wire. In addition, it has been found that with increasing the magnetic induction intensity, the droplet diameter and cycle time can be reduced. The mechanism of these phenomena was also further analyzed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The International Journal of Advanced Manufacturing Technology Springer Journals

Effect of external longitudinal magnetic field on arc plasma characteristics and droplet transfer during laser-MIG hybrid welding

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Publisher
Springer London
Copyright
Copyright © 2017 by Springer-Verlag London
Subject
Engineering; Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design
ISSN
0268-3768
eISSN
1433-3015
D.O.I.
10.1007/s00170-017-0293-2
Publisher site
See Article on Publisher Site

Abstract

The arc plasma behavior and droplet transfer are investigated using laser-MIG (metal insert gas) hybrid welding assisted by an external longitudinal magnetic field. The characteristic of arc plasma and droplet transfer can be recorded via combining sensing of the welding current and arc voltage with a high-speed imaging. Results indicated that the external longitudinal magnetic field had a significant impact on the arc shape, droplet formation, droplet size, and detaching. Under the magnetic field, the arc shape became a triangle gradually, and the off-axis arc and droplet gradually pointed to the axis of the filler wire. In addition, it has been found that with increasing the magnetic induction intensity, the droplet diameter and cycle time can be reduced. The mechanism of these phenomena was also further analyzed.

Journal

The International Journal of Advanced Manufacturing TechnologySpringer Journals

Published: Mar 30, 2017

References

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