Welding stability assessment apparatus for pulsed arc welding
AssigneeCentral Motor Wheel Co., Ltd.
InventorYukimitsu Suzuki
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Abstract
The present invention relates to an apparatus for assessing start-of-weld and steady state welding stability in pulsed arc consumable electrode gas-shielded welding. According to the present welding stability assessment apparatus, in order to obtain a pass/fail decision on start-of-weld welding stability for pulsed arc welding, an irregularity value is computed by a computer means, based on detected values from a detector means; and a pass/fail decision is made by an assessment means, thus making it possible to perform accurate assessment of start-of-weld welding stability in pulsed-arc welding.
Claims10
A welding stability apparatus for pulsed-arc welding, characterized in that, in consumable electrode gas-shielded pulsed-arc welding, wherein a welding voltage is applied between a welding electrode and a workpiece to be welded, for repeatedly supplying a pulse current and a base current, in alternation, and wherein welding is effected by causing a droplet from the welding electrode to be dropped onto the workpiece for each pulse, it comprises:
- a detector means for detecting at least one of
- welding voltage between the welding electrode and the workpiece,
- welding current flowing between the welding electrode and the workpiece, and
- power-on time;
- a computer means for computing degree of irregularity of values detected by the detector means;
- and
- an assessment means for comparing the computed irregularity with the irregularity of a known-good pulsed arc at the start of welding, and, from the amount of separation therebetween, assessing the pulsed arc welding stability at the start of welding.
A welding stability assessment apparatus for pulsed-arc welding, characterized in that, in consumable electrode gas-shielded welding, wherein a welding voltage is applied between a welding electrode and a workpiece to be welded, for repeatedly supplying a pulse current and a base current, in alternation, and wherein welding is performed by causing a droplet from the welding electrode to be dropped onto the workpiece for each pulse, it comprises:
- a detector means for detecting at least one of
- welding voltage between the welding electrode and the workpiece,
- welding current flowing between the welding electrode and the workpiece, and
- power-on time;
- a computer means for computing the degree of irregularity of values detected by the detector means;
- and
- an assessment means for comparing the computed irregularity with the irregularity of a known-good pulsed arc during steady state welding, and from the separation therebetween, assessing the pulsed arc welding stability during steady state welding.
Dependencies are inferred from the claim text.