Optimisation of welding parameters in pulsed MIG/MAG welding with width-controlled sine-wave current pulses. Part 1: Determination of a general synergic equation and a normalised parametric diagram with a defined parametric welding range Online publication date: Mon, 09-Apr-2007
by Danijel Langus, Viljem Kralj, Janez Grum
International Journal of Materials and Product Technology (IJMPT), Vol. 29, No. 1/2/3/4, 2007
Abstract: The paper treats synergic pulsed MIG/MAG welding with width-controlled sine-wave current pulses. Such a current-pulse waveform will be obtained if a power source is controlled by thyristors integrated in a power circuit. In this case the pulse frequency is constant and the current-pulse power can be controlled by the delay time of the thyristor ignition. The paper focuses on a theoretical derivation of a general synergic equation of pulsed MIG/MAG welding with width-controlled sine-wave current pulses that relates a mean welding current with pulsed welding parameters. On this basis, a normalised parametric diagram with a defined parametric welding range can be defined and elaborated, which permits a further analysis of pulsed welding and optimisation of pulsed welding parameters.
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