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Priority to ES0224531ApriorityCriticalpatent/ES224531A1/en
Publication of ES224531A1publicationCriticalpatent/ES224531A1/en
Process of extruding hollow pieces, according to which an initial piece is placed on a punch and it rises so that it penetrates a matrix in such a way that the metal of the initial piece is impelled downwards around the punch, whose procedure is characterized by the fact that the initial piece (32) is fixed on the punch (12), which allows it to be centered on it and to avoid any lateral displacement of said piece in relation to the punch, during the movement of the latter, verifying the drive the metal of this piece (32) down in a uniform manner around the punch. (Machine-translation by Google Translate, not legally binding)
ES0224531A1955-10-141955-10-14An extrusion procedure for hollow parts (Machine-translation by Google Translate, not legally binding)
ExpiredES224531A1
(en)
Device for the deformation of metal sheets. As divisional of the patent application number 206168 and with priority of the german patent application e 5.283 ib/7c, of 29-3-1952 (Machine-translation by Google Translate, not legally binding)