28-03-2013 дата публикации
Номер: US20130075953A1
Принадлежит:
K4SINT S.R.L.
Process for manufacturing sintered products, includes: 124-. (canceled)255. Process for the manufacture of sintered products () , comprising the steps of:{'b': 1', '2', '3', '4', '5', '3', '4', '4, 'mixing at least a sinterable powder material (), at least a liquid carrier () and at least a gelling agent () to form a mix () for the manufacture of a sintered product (), said gelling agent () having a gelling temperature below which said mix () is rigid and a sol temperature above which said mix () is fluid;'}{'b': 4', '6', '7', '2', '1, 'introducing said mix () into a forming mould () having filtering means () suitable for being crossed at least by said liquid carrier () and trapping at least said sinterable powder material ();'}{'b': '6', 'heating the forming mould () at a temperature higher than said gelling temperature;'}{'b': 6', '4', '2', '6', '7, 'applying a pressure in said forming mould (), heated, with said mix () which has at least a temperature higher than said gelling temperature and is fluid, said step of applying a pressure being suitable for allowing said liquid carrier () to come out at least partially from said forming mould () through said filtering means ();'}{'b': 4', '6', '8, 'lowering the temperature of said mix () in said forming mould () below said gelling temperature to obtain a rigid semi-finished product ();'}{'b': 8', '5, 'sintering said semi-finished product () to obtain said sintered product ().'}268. Process according to the claim 25 , wherein it comprises the step of drying said semi-finished product () before said sintering.278. Process according to claim 26 , wherein said drying step comprises leaving said semi-finished product () in the open air claim 26 , the drying occurring by natural evaporation.288. Process according to claim 26 , wherein said drying step comprises placing said semi-finished product () into a controlled evaporation system.2932. Process according to claim 25 , wherein said gelling agent () mixed with said liquid ...
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