PERFECCIONAMIENTOS EN LAS INSTALACIONES PARA LA SOLDADURA AUTOGENA DE CHAPAS FINAS Y APLICADAS ESPECIALMENTE PARA SOL-DAR LOS BORDES DE UN FLEJE METALICO CONFORMADO TUBULARMENTE.

摘要

Apparatus for welding a longitudinal seam in thin metal sheets, including a plurality of welding electrodes arranged in a row and in alignment with the seaming portions of the metal sheets, the electrodes being adapted to be singly and collectively adjusted in directions vertically and transversely related to the seam, together with means for stabilizing the operation of the individual electrodes by providing an endless magnetic field disposed about the arcing end portions of the electrodes.