METHOD FOR ERECTING A WALL OF CYLINDRICAL RESERVOIR OF ROLL HALF-FINISHED ARTICLE Russian patent published in 1995 - IPC

FIELD: civil engineering. SUBSTANCE: roll half-finished piece is made of unified sheets 1 connected to one another with horizontal weld joints 2 and vertical ones 3 to form a strip with allowance on end sheets. The strip has end sections 9 for each belt free from horizontal weld joints 2. Method for erecting a wall of cylindrical reservoir of roll half-finished piece includes unwrapping the roll half-finished piece placed in vertical position, fitting its edges followed by cutting allowance alternatively over the belts beginning from outer and inner edges, forming field closing weld joint over horizontal and vertical edges of the strip. Preliminary in making the strip, end sections 9 free of horizontal weld joints, with section length exceeding half radius of the roll for any belt, are connected using temporal weld joint 10 of the length less than one tenth roll radius beginning from vertical edges 4 of the strip. Then end sections 9 shape forming, and assembly of vertical butt on individual belts, beginning field operations from any belt are carried out. EFFECT: increased quality and decreased labour consumption. 4 dwg