The Study of Electric Welding Using Three-Phase Alternate Current

Abstract

The authors recently studied the new method of electric welding using electrodes with two metallic cores. In this method, each phase of the three-phase alternate current is connected to the combing members and two cores, and the members are welded by arcs produced between members and cores and between two cores. Therefore, the authors consider that this method is very advantageous compared with the conventional one using electrodes of larger diameter in the following points.
a) We can obtain the higher tensile strength of the combing members, because, by this method, they are avoided from being heated too much.
b) We can promote the welding speed, because, by this method, the electrode can easily and rapidly be melted in the members.