Article contents
Method of metal transfer regulation during GMA welding
Published online by Cambridge University Press: 26 February 2010
Abstract
The main force that detaches a molten droplet from the electrode (wire) during arc welding is the interaction of the arc current with its own magnetic field. The magnitude of this force depends on the current distribution inside the droplet. A method to regulate the current distribution is proposed. The current redistribution is achieved by striking an additional arc with the droplet serving as a cathode of this arc. By the current redistribution it is possible (i) to decrease the threshold current of the globular to spray transition during GMA welding, (ii) to achieve this transition in different plasma gases, and (iii) to control the propelling direction of the detaching droplet. Some preliminary experiments confirm the proposed method.
- Type
- Research Article
- Information
- The European Physical Journal - Applied Physics , Volume 50 , Issue 1: Focus on Electrical Contacts , April 2010 , 11001
- Copyright
- © EDP Sciences, 2010
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