Abrégé

The invention relates to a method for producing hollow forged parts, that comprises the following steps: making a core of a lost material having a shape corresponding to the internal shape of the part to be obtained except for deformation during forging, positioning the core in a foundry mould, casting a metal around the core so as to completely surround the core in order to obtain a preform (18), sealing the preform (18) so that the core is completely isolated relative to the outside, forging the preform (18) in order to obtain the part having the desired shape, and decore the core of the part in order to obtain the hollow forged part.

Classes IPC  ?

• B21J 5/02 - MatriçageÉbarbage par utilisation de matrices particulières
• B21K 21/00 - Fabrication d'articles creux, non couverte par un seul des groupes
• B22C 9/10 - NoyauxFabrication ou mise en place des noyaux