PROCEDIMIENTO Y DISPOSITIVO PARA LA SOLDADURA DE METALES POR ARCO ELECTRICO. OTROSI.- SE HACE CONSTAR QUE EL PROCEDIMIENTO Y DISPOSITIVO QUE SE REIVINDICAN EN ESTA PATENTE SON INSEPARABLES Y CONSTITUYEN UN SOLO OBJETO

摘要

The invention relates to a process and an apparatus for metal arc welding with a consumable electrode. A pulsating current is supplied to the electrode from a constant current source. During the interpulse periods between pulses there flows a minimum current which is at least sufficient to maintain the arc. The switch from pulse current to interpulse current occurs as a function of the arc voltage, with switching to pulse current occurring if a minimum voltage is detected and to interpulse current occurring if a maximum voltage is detected. Compared with conventional metal arc welding with a consumable electrode, this method offers the advantage of a better welding quality.