Patent ID: 8485415

Claim:
A method for manufacturing a panel structure by joining a frame to one face of a face plate by welding a plurality of positions arranged in the axial direction of the frame to the face plate, said method comprising: performing a first welding in which a reference position of a plurality of positions to be welded arranged in the axial direction of a first frame is first welded to the one face, performing a second welding in which a not-yet-welded position closest to the reference position of the plurality of positions to be welded arranged in the axial direction of the first frame is welded to the one face, and after the first and second weldings, repeating a welding process in which a not-yet-welded position closest to the reference position of the plurality of positions to be welded arranged in the axial direction of the first frame is welded to the one face, wherein the first frame is one of a plurality of frames joined parallel to each other to the one face, after each welding of the first frame, a not-yet welded position of each frame other than the first frame corresponding to a last welding position of the first frame is welded to the one face starting from the frame closest to the first frame, until partial frame welding in which a not-yet-welded position corresponding to the last welding position of the first frame is welded in each frame, partial frame welding is performed discontinuously on the one face from a not-yet welded position of the frame closest to the first frame, until welding of all positions to be welded in each frame is completed with regard to all the frames, the partial frame welding is performed repeatedly.