METHOD AND SYSTEM FOR DETERMINING OPERATING CHARACTERISTICS OF ARC WELDING WIRE

摘要

The apparatus of the present invention for setting the parameter sensitive to the voltage of an electric arc welding wire as a parameter for indicating a welder's welding characteristics so that the welder knows, between means for feeding the wire toward the workpiece, and between the welding wire and the workpiece Means for applying a voltage between the weld wire and the workpiece to create a weld arc to melt and coat the weld wire on the workpiece by a voltage sensitive arc welding procedure, and a transfer region between spray welding and spherical welding Means for gradually changing the applied voltage so that the welding procedure can be switched through; Means for detecting an actual voltage between the wire and the workpiece when the applied voltage is changed, means for detecting each time the actual voltage decrease is lower than a predetermined threshold voltage, means for averaging the number of times of detection, and sensing Means for detecting an applied voltage value when the average value of the number of times obtained is equal to a predetermined number, and means for selecting the predetermined number so that a value indicating the welding procedure is in the transmission area.