| 摘要 |
PROBLEM TO BE SOLVED: To adjust and control welding-current and applied pressure automatically when a dispersion phenomenon occurs in resistance-welding for promoting preferable nugget growth.SOLUTION: A resistance-welding device 100 comprises: a detector 50 for detecting resistance or voltage between electrodes of a pair of electrodes 21 and 22; and a controller 60 for controlling an energization device 30 or a pressure device 40 on the basis of the detected value of the detector 50. The controller 60 determines that a dispersion phenomenon occurs when the detected value of the detector 50 becomes equal to or less than a threshold, and controls the energization device 30 or the pressure device 40 for dissolving a plate joining state of the members 1 and 2 to be welded by making the members fit, then energization is performed. |
