Process for realising biologically-compatible three-dimensional elements
AssigneeK4Sint S.R.L.
InventorsFrancesco Casari, Luca Girardini, Alberto Molinari, Mario Zadra
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Abstract
The process for realizing biologically-compatible three-dimensional elements comprises sintering in forming means (6) and at a sintering temperature (T1), by passing an electrical current and applying a pressure, a volume (11) of forming material, obtaining formed concave and/or convex elements (1). Before the sintering operation, a granular material (12) is added to the volume (11) of forming material, which granular material (12) is removable from the formed concave and/or convex elements (1), having a melting temperature (T2) which is higher than the sintering temperature (T1); in this way pores (5) are obtained.
Claims21
A process for realizing biologically-compatible concave and/or convex elements (1), in a system suitable for causing sintering by applying an activating electrical sintering current through a material to be sintered and by applying a pressure on it, the process comprising:
- sintering in forming means (6), by applying a pressure and at a sintering temperature (T1) a volume (11) of a forming material (11) of an electrically conductive/non-conductive type, thereby obtaining formed concave and/or convex elements (1);
- and adding to said forming material (11), before said sintering, a granular material (12) which is removable from said formed concave and/or convex elements (1), said granular material (12) having a melting point temperature (T2) which is higher than said sintering temperature (T1),
- wherein said granular material (12) comprises:
- a granular material having a low level of electrical conductivity, when said forming material (11) is of an electrically-conductive type, whereby the sintering current is concentrated and passes only through the forming material (11), heating it up and sintering it,
- or a granular material having a high level of electrical conductivity, when said forming material is of a substantially electrically non-conductive type, whereby the sintering current passes through the granules (12) and heats them up, and the heat so generated is transmitted from the granules to the forming material for sintering it.
Dependencies are inferred from the claim text.