METHOD FOR MANUFACTURE OF SIDE WALL OF LONG-DISTANCE PASSENGER CAR Russian patent published in 1995 - IPC

FIELD: metal working. SUBSTANCE: first, upper and lower bands are cut for approximate length and horizontally laid on welding device and stretched over their longitudinal edges in shape corresponding to bow-shaped preliminary tensioning. Then, window band is fully cut off for approximate length, wound on reel and draw from there through stationary stamping press so that window openings are stamped bow-shaped corresponding to simulated preliminary tensioning. Window band is horizontally laid on welding device and tack-welded to upper and lower bands. Upon completion of said jobs, H-shaped sections of beams of side wall framework are laid parallel to each other and to window openings onto outer sidings of side wall and welded to it. Then, all side wall is turned and window band is joined with upper and lower bands with tight welds. Work is ended in placing the side wall to vertical position and cut to final size. EFFECT: higher efficiency.