DISPOSITIF ET PROCEDE DE COMMANDE D'UNE MACHINE DE SOUDAGE A L'ARC A MODULATION D'IMPULSIONS DE COURANT CONTINU

A control system for pulsed direct current arc welding operates automatically to adjust the width of the current pulses supplied at an arc gap (73) by a pulsed DC power supply (74), to control power flow to work pieces (70) at the arc gap. A suitable control system 80 comprises a variable resistance...

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Bibliographische Detailangaben
1. Verfasser:	WILLIAM E. WRIGHT JR, DALE E. JACKSON ET ROSS A. MOYER
Format:	Patent
Sprache:	fre
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A control system for pulsed direct current arc welding operates automatically to adjust the width of the current pulses supplied at an arc gap (73) by a pulsed DC power supply (74), to control power flow to work pieces (70) at the arc gap. A suitable control system 80 comprises a variable resistance device connected in parallel with a normally closed time delay switch. This system is electrically connected in an impulsar control circuit (78, 79, 80, 81, 82) of the power supply. The control system automatically changes the resistance in the conventional impulsar control circuit to provide an adjustment to alter the impulsar output signal which controls the pulse width of the current pulses supplied by the power supply.