AUTOMATIC HORIZONTAL WELDING OF ALUMINUM ALLOY

PURPOSE:To improve efficiency in one-side horizontal oscillating welding of the horizontal aperture of a vertical face by setting the direction of a torch at a specific angle range with respect to the plate surface and the bottom face of the groove and setting the vertical oscillating direction at a specific angle range as well thereby increasing the amt. of deposition and decreasing the number of weld layers. CONSTITUTION:The base 2 of the horizontal aperture of a vertical face 1 is made horizontal and the top face 2 is sloped divergently. The angle alpha of inclination of a torch with respect to the base 2 viewed from the side face of the face 1 is set at 0-30 deg.. The angle beta between the locus where the oscillating 7 direction of the tip of the torch viewed from the direction perpendicular to the plate face 1 is downward in the advancing direction of welding and upward in the direction opposite to the advancing direction of welding and the weld line is set at 30-60 deg.. The angle gamma with the existing weld line viewed from the face 1 direction perpendicular to the weld line is set at 70-110 deg.. The amt. of the weld metal layer which does not flow down increases and the number of the weld layers is decreased in this case. The efficiency is thus improved.