Abstract: An additional bottom adapted to be fixed to an outer surface of a bottom of a vessel, provided with holes which are designed to be filled by a material of the vessel during a coining step which fixes the bottom to the vessel, further comprising protrusions which protrude from an outer surface of the bottom of the vessel.

Abstract: A method for obtaining a hollow monolithic aluminum-alloy element provided with at least one handle, comprising: a first step for drawing an adapted portion of flat metal plate, obtaining a pre-deformed element which resembles, as regards the bottom and wall, the shape of the finished element and has, at the top of the wall, a protrusion at the at least one handle to be obtained; a second step for coining the pre-deformed element provided in the first step, obtaining an element which has a portion of a wall which is comprised between the at least one handle and the top of the wall.

Abstract: A method for fixing an additional bottom to the external surface of the bottom of a container, wherein the additional bottom and the container are mutually fixed by coining in a die with a male part and a female part which are connected to the footing and the moving slider of a press.

Abstract: A drawing and coining die for metal containers, comprising: a matrix, which is connected to a base associated with a moving slider of a press and comprises a sliding plate provided with elastic means in contrast with the base; a male element, which is connected to a base associated with a footing of the press and is shaped so as to make contact with an edge of the container; a blank holder, which is slidable in contact with the male element, is provided with movement means and comprises means for resting and centering a disk that constitutes the material to be processed.

Abstract: A drawing and coining die for manufacturing metal containers and the like, comprising: a matrix, which is connected to a lower base adapted to be associated with a footing of a press and is provided with a device for centering a disk that constitutes the material to be processed; and a male element, which is connected to an upper base adapted to be associated with a movable slider of the press and is shaped so as to make contact with an edge of the resulting container.