from sheet metal and / or metal plastic composite material of bucket, canister or container with a eindrückdeckel or eindrückboden faßförmiger

摘要

A container 1 of sheet metal material or sheet metal/plastics composite has a press-in cover 6 which can be pressed into the rim of the body 2 to form a large-volume barrel in the form of a pail, canister or drum. The rim of the container 1 is reinforced by means of at least one of the rims of the body 2 and the cover 6 being folded over. The outer sheet-metal layer 2a of the container body and at least the adjacent sheet-metal layer 7 of the cover 6 are joined firmly and tightly to each other by contact free welding 8 at an axial distance from the axially outermost part 9 of the rim. The reinforced rim is produced without additional material beyond that already present in the body Z and the cover 6. Preferably a corrugation 3 is provided for fixing the position of the cover relative to the body. The welding may be electron-beam or laser-beam welding and three adjacent layers may be welded together. The free edge of the folded rim may be rolled in the direction of its adjacent layer (Figures 2 and 3) or may extend into a corrugation (26b, Figure 3a). The welding is effected in the radial direction after the mechanical deformation of the rims has taken place, from inside to outside or preferably from outside to inside. IMAGE