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2. (WO2011072961) PROCESS FOR SINTERING POWDERS ASSISTED BY PRESSURE AND ELECTRIC CURRENT

Pub. No.:    WO/2011/072961    International Application No.:    PCT/EP2010/067269
Publication Date: Fri Jun 24 01:59:59 CEST 2011 International Filing Date: Fri Nov 12 00:59:59 CET 2010
IPC: B22F 3/105
Applicants: K4SINT S.R.L.
CASARI, Francesco
GIRARDINI, Luca
ZADRA, Mario
Inventors: CASARI, Francesco
GIRARDINI, Luca
ZADRA, Mario
Title: PROCESS FOR SINTERING POWDERS ASSISTED BY PRESSURE AND ELECTRIC CURRENT
Abstract:
The process for sintering powders assisted by pressure and electric current comprises the phases of: arranging a sinterable material in powder form and at least in part electrically conductive inside a mould (1) having a preset conformation. Such phase in turn comprises the phases of: compacting the sinterable material in powder form outside the mould (1) to form at least a green body (5, 5a, 5b) having an initial conformation different to the preset conformation of the mould (1); and introducing the green body (5, 5a, 5b) into the mould (1); sintering the sinterable material in the mould (1) by making electric current to pass through the sinterable material and applying a pressure on the sinterable material; the application of pressure during the sintering phase causing the deformation of the green body (5, 5a, 5b) from the initial conformation to the preset conformation of the mould (1).