Consumable double-electrode gas metal arc welding (consumable DE-GMAW) is the efficient improvement of DE-GMAW. Due to the variety of coupled arc and metal transfer behaviors, this paper applies static force balance theory to analyze the changes in the forces acting on the main and bypass droplets separately. For main torch, the bypass arc changes the forces affecting on the main droplet, and the main metal transfer becomes more desirable. For bypass torch, with direct current electrode negative (DCEN) polarity, the volume of droplet is big and not easily transfers to the weld pool. In order to improve the bypass metal transfer, a method has been proposed which adds CO2 to pure argon shielding gas to change the forces affecting on the bypass droplet. Then, the welding experiment is carried out to test the effectiveness of this method. It is found that bypass droplet transfers easily and the diameter of bypass droplet is decreased significantly. Also a good weld appearance is acquired.
Analysis and Improvement of Metal Transfer Behaviors in Consumable Double-Electrode GMAW Process
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received January 2, 2014; final manuscript received August 30, 2014; published online November 26, 2014. Assoc. Editor: Wayne Cai.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Zhu, M., Shi, Y., and Fan, D. (February 1, 2015). "Analysis and Improvement of Metal Transfer Behaviors in Consumable Double-Electrode GMAW Process." ASME. J. Manuf. Sci. Eng. February 2015; 137(1): 011010. https://doi.org/10.1115/1.4028636
Download citation file:
- Ris (Zotero)
- Reference Manager