JPS6418586A - Method for welding sheet metal corner - Google Patents

Abstract

PURPOSE:To reduce man-hour, and to improve the weld quality by providing a notch with a shape where the deformation or fusion by the pressurizing force, etc., at the time of welding is not caused to a corner with the different casing face width to perform the butt welding. CONSTITUTION:The notched shape outside 5c is notched by tracing a 5g line with a notched shape to be a weld line as a broken line 5a-5b-5c, by which an angle between the outside 5c and a casing face ridgeline 5h is formed to 45 deg.. The notched shape inside 5d formed toward an inside angle 5a from a point 5k provided with the sufficient length to hold the outside strength on the outside is formed so that an angle with the pressurizing direction 5j at the time of welding is formed as largely as possible. By this method, the outside sufficient strength is held at the outside 5c part and the stable welding can be performed by forming the notched shape at two stages by dividing it into the outside 5c and the inside 5d. In addition, the quantity of deviation at the time of welding can be restrained as much as possible at the inside 5d part.