MULTI-ELECTRODE WELDING METHOD

摘要

PURPOSE:To enable easy regulation of the welding current and voltage of the entire electrode by detecting and processing the welding current and voltage of only the reference electrode among the multiple electrodes of a multi-electrode welding machine. CONSTITUTION:The current and voltage of a reference electrode 1 of a multi- electrode welding machine are set by a welding control device 2 and are outputted from a reference electrode 1 via a welding power source 3 for the reference electrode and a wire feeder 4. The signals from a current detecting part 5 and voltage detecting part 6 for the electrode 1 enter a calculator 7. The calculator 7 emits a command to a welding control device 9 for subsidiary electrodes so that the current and voltage values of a subsidiary electrode 8 attain the specified relation determined preliminarily with the current and voltage values of the electrode 1. The device 9 controls a welding power source 10 for subsidiary electrodes and a wire feeder 11 so as to attain the target current and voltage values.