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 Tapping with welding wire 8 , the control of the welding wire feed rate v D is carried out according to the tapped potential P and due to said control the average welding wire feed rate is set