The Study of the Model for the Formation Process of GMAW
It is based on the comprehensive analysis of welding circuit for GMAW arc power, a system model, through power, cable, wire, droplet and arc, is created, and a voltage function of wire is also developed according to distributed temperature function about a variable of genuine length of wire. Then, a dynamic and multicycle droplet- voltage mathematic model is also found by the time-weight coefficient φ for the equivalent length of transferred droplet and by the transition of wire volume from a solid to a liquid state. Besides these, a arc-voltage function, involved the welding current, the genuine length of wire and the height of welding nozzle, is established logically and especially, Meanwhile, the correlative parameters is simultaneously analyzed. At last, there made an acute and good comparison between the oscillograms of simulation and experiment for voltage and current in the paper.
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
C. T. Li et al., "The Study of the Model for the Formation Process of GMAW", Advanced Materials Research, Vols. 189-193, pp. 2404-2410, 2011