METHOD FOR RESTORING HIGH PRESSURE BOTTLES Russian patent published in 2000 - IPC

FIELD: machine engineering, possibly restoration of acetylene cylinders, manufacture of acetylene cylinders and other types of high pressure bottles for different designations. SUBSTANCE: method comprises steps of cutting off bottom portion of bottle, emptying bottle, cleaning inner cavity of its cylindrical and bottom portions, assembling cylindrical and bottom portions for welding them by circular joint in cross section of cutting; mounting reinforcing ring onto welded joint and welding said ring with shoe. Restored bottle has reduced mass due to thinning walls of its cylindrical portion after cleaning inner cavity of bottle. Walls are thinned until designed thickness by working or rotary drawing at keeping thickened zone with initial thickness for welding it with bottom portion. EFFECT: simplified manufacturing process, lowered labor consumption of restoration process. 2 cl, 11 dwg, 2 ex