FRICTION STIR WELDING DEVICE AND METHOD FOR MANUFACTURING METAL STRUCTURE

摘要

A friction stir welding device (1) equipped with: a rotary tool (2) having at its tip a stirring pin (21); a shoulder (8) into which the rotary tool (2) is inserted; a rotary driving device (41) that causes the rotary tool (2) to rotate around an axis; a pressing device (42) that presses the rotary tool (2) and the shoulder (8) against an inner corner part (90); a moving device (43) that moves the rotary tool (2) and the shoulder (8) along the inner corner part (90) in the direction of travel; and a wire heating device (45) that heats a wire to be friction-stirred with two metal members (members to be bonded (91, 92)) by means of the stirring pin (21).