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1. (WO2011141796) PROCESS FOR THE MANUFACTURE OF SINTERED PRODUCTS

Pub. No.:    WO/2011/141796    International Application No.:    PCT/IB2011/000990
Publication Date: Fri Nov 18 00:59:59 CET 2011 International Filing Date: Wed May 11 01:59:59 CEST 2011
IPC: B22F 3/22
Applicants: K4SINT S.R.L.
CASARI, Francesco
GIRARDINI, Luca
ZADRA, Mario
Inventors: CASARI, Francesco
GIRARDINI, Luca
ZADRA, Mario
Title: PROCESS FOR THE MANUFACTURE OF SINTERED PRODUCTS
Abstract:
The process for the manufacture of sintered products (5), comprising the steps of: mixing a sinterable powder material (1), a liquid carrier (2) and a gelling agent (3) to form a mix (4) for the manufacture of a sintered product (5), the gelling agent (3) having a gelling temperature below which the mix (4) is substantially rigid and a sol temperature above which the mix (4) is substantially fluid; introducing the mix (4) into a forming mould (6) having filtering means (7) suitable for being crossed at least by the liquid carrier (2) and trapping at least the sinterable powder material (1); applying a pressure in the forming mould (6) with the mix (4) which has a temperature substantially higher than the gelling temperature and is substantially fluid, applying a pressure being suitable for allowing the liquid carrier (2) to come out at least partially from the forming mould (6) through the filtering means (7); lowering the temperature of the mix (4) in the forming mould (6) below the gelling temperature to obtain a substantially rigid semi-finished product (8); sintering the semi-finished product (8) to obtain the sintered product (5).