Welding apparatus and welding method with self-regulating welding wire feed rate

摘要

According to the invention, during the welding process, in order to easily control the supply of the welding wire 8 to the welding point 25, the potential P generated by _{the welding current I S around the electrode 4 is} The welding wire 8 is tapped, and _{the control of the welding wire supply speed v D} is performed according to the tapped potential P, and due to the control, the average welding wire supply speed Is set.