SWITCHING ELECTRODE AND RESISTANCE WELDING DEVICE USING SAME, SPOT WELDING DEVICE AND SPOT WELDING METHOD

摘要

In order to provide a switching electrode capable of conducting a stable amount of current even when used continuously because there is little change in the resistance value even when currents of high amperage are repeatedly blocked, the present invention is a switching electrode that is configured from a first switching electrode tip (21) and a second switching electrode tip (22) and is used as a switch, which turns electricity on by surface contact of the first switching electrode tip (21) with the second switching electrode tip (22) and turns electricity off by separating same, wherein at least one of the contact surfaces where the first switching electrode tip (21) and the second switching electrode tip (22) contact each other is configured to be a plane that is rough.