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JWJ > Volume 27(1); 2009 > Article
Journal of KWJS 2009 February;27(1) :59-64.
Published online March 12, 2009.
Analysis of Pulsed GMAW Using Force-Displacement Model
Arif Nabeel, LeeJae Hak, YooChoong Don


Correspondence:   Published online March 12, 2009
ABSTRACT
  In order to determine the One-Drop One-Pulse (ODOP) condition of the pulsed gas metal arc (GMA) welding, the drop detaching phenomenon during the peak time is investigated using the force-displacement model. The drop detaching criterion is established based on the displacement of the pendant drop, and the forces exerted on the drop are calculated using the Modified Force Balance Model (MFBM). The effects of wire melting on the drop size and force are included in the force-displacement model. While the peak current has most significant effects on the drop detaching time, the initial drop mass prior to the peak time also influences drop transfer. The calculated results show good agreements with the experimental data, which implies that the ODOP condition can be predicted using the force-displacement method.
Keywords: Pulsed GMAW;Force-displacement model;ODOP;MFBM;Wire melting
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