Computer Aided Pulsed Current GMA Welding of Aluminium Alloys

Abstract

A user friendly software has been developed to select the pulse parameters for a given weld quality on the basis of empirical correlations amongst the pulse parameters and algorithms in reference to a summarised influence of pulse parameters defined by a dimensionless factor. The software enable to understand the controll of pulse parameters to maintain a stable arc for a desired weld quality of Al-Mg alloy deposit, currently considered as porosity content of it. The software has been sucessfully tried to operate a modern pulsed current GMAW power source in producing weld within a desired level of porosity content. The understanding over the characteristics of the variation in pulse parameters and their control with the help of software has been discussed to provide confidence in more wide use of pulsed current GMAW to produce weld of desired quality.