Abstract: A teaching apparatus that is connected to a control apparatus controlling a welding robot and outputs a command intended for the welding robot to the control apparatus is provided. The teaching apparatus includes a welding-parameter-manipulating portion provided on a front face and accepting an operation of changing a setting that defines a movement, of the welding robot, an enabling switch provided on a back face and accepting an operation of changing a state of electrification of the welding robot, and a robot-manipulating portion provided on the back face and accepting an operation of executing the movement of the welding robot. The welding-parameter-manipulating portion is positioned on a left side, in front view, with respect to the center, and the enabling switch and the robot-manipulating portion are positioned on a right side, in rear view, with respect to the center.

Abstract: A gouging-less full-penetration welding method for welding a first steel plate and a second steel plate without performing gouging includes: a step of repeating weaving at a welding current of 130 to 300 A between the first steel plate and the second steel plate, thereby forming an initial weld bead having a continuous single or a plurality of continuous layers between the first steel plate and the second steel plate; a step of conducting single- or multi-layer welding from a front side; and a step of conducting single- or multi-layer welding from a back side.

Abstract: A teaching apparatus that is connected to a control apparatus controlling a welding robot and outputs a command intended for the welding robot to the control apparatus is provided. The teaching apparatus includes a welding-parameter-manipulating portion provided on a front face and accepting an operation of changing a setting that defines a movement, of the welding robot, an enabling switch provided on a back face and accepting an operation of changing a state of electrification of the welding robot, and a robot-manipulating portion provided on the back face and accepting an operation of executing the movement of the welding robot. The welding-parameter-manipulating portion is positioned on a left side, in front view, with respect to the center, and the enabling switch and the robot-manipulating portion are positioned on a right side, in rear view, with respect to the center.