Abstract
An efficient model of gas metal arc welding (GMAW) systems was developed. The model accounts for the short circuiting transfer with free flight transfer, with finite droplet height included. Furthermore, we have analytically solved the energy equation of the wire, including the contact resistance between contact tip and wire as a boundary condition of the energy equation. The model predicts the time variable properties of GMAW systems from short circuiting to free flight transfer mode. Model prediction results have been compared with experimental results, and have shown good agreement.
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