Abstract: The purpose of the invention is a reverse extruding press perfected for releasing a billet jammed in the container.According to the invention, the obturator (31) of the rear surface of the container with a thickness (e) can be replaced, by displacement transversal to the extrusion axis (10), by an extraction part (33) of the same thickness (e), fitted with a central hole (34) of the same section as that of the recess (20) of the container (2). By bringing the movable beam (3) forward, the extraction part (33) pushes the container (2) backwards as well as the rear section (53) of the billet (5) which is cleared from the recess (20) and engages into the central hole (34). The billet (5) being thus maintained, the container can be moved forward to position the pick-up means (54).

Abstract: A method and apparatus for extruding metal using the reverse method in which a billet placed in the bore of a container is compressed between a base and an extruding block. Billets are extruded in the raw state without prior removal of the outer layer, leaving a play sufficient to form a sleeve of a thickness at least equal to that of the outer layer to be removed, between the periphery of the block and the inner face of the bore, along the inner face. The bore is then scraped, using a scraping block whose periphery is separated from the inner face of the bore by a play which is less than the thickness of the sleeve but sufficient for the sleeve to be removed over a part only of its thickness.