Abrégé

The invention relates to a method for producing a ceramic core (4, 4'), and to a core produced by means of said method, for preparing the production of a casting having hollow structures, which is designed to form the ceramic core, using a 3D model of digital gemetric coordinates of the casting, said method comprising the following steps: a) producing, by casting, at least one first sub-region (4) of the ceramic core including at least one first joining structure (24) in a surface of the sub-region; b) producing, by casting or by 3D printing, at least one second sub-region (4') of the ceramic core including at least one second joining structure (26) complementary to the first joining structure, in a surface of the sub-region, the production by casting comprising the following steps: i. pressureless or low-pressure casting of a ceramic core blank, with an oversize in relation to the core (4, 4') according to the geometric coordinates; ii. CNC-machining of the core (4, 4') according to the 3D model in a first CNC-machining method; and c) joining the at least one first and at least one second sub-region of the core, with the complementary joining structures, to form the core according to geometric coordinates of the casting.

Classes IPC  ?

• B22C 7/02 - Modèles perdus
• B22C 9/04 - Emploi des modèles perdus
• B22C 9/10 - NoyauxFabrication ou mise en place des noyaux
• B22C 9/18 - Finition des moules
• B28B 7/28 - NoyauxMandrins
• B28B 11/08 - Appareillages ou procédés pour le traitement ou le travail des objets façonnés pour façonner des surfaces, p. ex. replanissage, bouchardage, gaufrage, rainurage

Produits et services

Cast-manufactured components of metal, namely, turbine blades being machine parts, turbine guide vanes being machine parts, and structural turbine components being machine parts, all of the forgoing other than for land vehicles; components of metal manufactured by means of investment casting, namely, turbine blades being machine parts, turbine guide vanes being machine parts, and structural turbine components being machine parts, all of the forgoing other than for land vehicles; components for turbines, namely, turbine blades, turbine guide vanes, and structural turbine components, all of the forgoing other than for land vehicles; structural turbine components in the nature of turbine blades and guide vanes, other than for land vehicles, and machine tools for the manufacture thereof; components for cast-manufacturing components of metal, namely, casting machine parts in the nature of wax patterns for investment casting, ceramic cores for investment casting of hollow components and wax patterns with ceramic cores for investment casting of hollow components; components for manufacturing by means of investment casting components of metal, namely, casting machine parts in the nature of wax patterns for investment casting, ceramic cores for investment casting of hollow components and wax patterns with ceramic cores for investment casting of hollow components; machine tools for manufacturing by means of investment casting components of metal Customised manufacture of components of metal by means of casting; customised manufacture of components of metal by means of investment casting; custom manufacture of components for turbines; customised manufacture of turbine blades and components therefor and tools for manufacturing turbine blades and components therefor; customised manufacture of components and tools for cast-manufacturing components of metal; customised manufacture of components and tools for manufacturing by means of investment casting components of metal

Abrégé

The invention relates to a method for producing a ceramic core and to such a core (4) in order to prepare for the production of a casting having hollow structures, for the forming of which the ceramic core is designed, using a 3D model of digital geometric co-ordinates of the casting. The method comprises the following steps: a) unpressurized or low-pressure casting of a ceramic core blank, with an oversize relative to the core according to the geometric co-ordinates; b) CNC processing of the core according to the 3D model in a first CNC processing method.

Classes IPC  ?

• B22C 7/02 - Modèles perdus
• B22C 9/04 - Emploi des modèles perdus
• B22C 9/10 - NoyauxFabrication ou mise en place des noyaux
• B22C 9/18 - Finition des moules
• B22C 13/12 - Machines à mouler pour faire des moules ou noyaux de forme particulière pour noyaux
• B22C 13/16 - Machines à mouler pour faire des moules ou noyaux de forme particulière pour noyaux par pressage à travers une filière
• B28B 7/28 - NoyauxMandrins
• B28B 11/08 - Appareillages ou procédés pour le traitement ou le travail des objets façonnés pour façonner des surfaces, p. ex. replanissage, bouchardage, gaufrage, rainurage

Produits et services

Cast-manufactured components of metal, included in class 7; Components of metal manufactured by means of investment casting, included in class 7; Components for turbines; Turbine blades and components therefor or tools for the manufacture thereof; Components, included in class 7, or tools for cast-manufacturing components of metal; Components, included in class 7, or tools for manufacturing by means of investment casting components of metal. Customised manufacture of components of metal by means of casting; Customised manufacture of components of metal by means of investment casting; Custom manufacture of components for turbines; Customised manufacture of turbine blades and components therefor or tools for manufacturing turbine blades and components therefor; Customised manufacture of components or tools for cast-manufacturing components of metal; Customised manufacture of components or tools for manufacturing by means of investment casting components of metal.

Abrégé

The invention relates to a method for producing a cast component which has cavity structures, using a 3D pattern of digital geometrical coordinates of the cast component by means of a ceramic mold, said method comprising the following steps: a) producing the core according to the 3D pattern by CNC technology in a first CNC production method; b) positioning the core in a treatment support; c) casting the pattern material around the core in a volume that is larger than the cubature of the cast component which according to the 3D pattern is spatially defined by the position of the core in the treatment support, and allowing the pattern material to solidify; d) producing an outer contour of a disposable pattern of the cast component from the solidified pattern material around the core according to the 3D pattern by CNC technology in a second CNC production method; e) applying a ceramic mold to the outer contour of the disposable pattern and forming a positioning connection of the ceramic mold and the treatment support; f) removing the disposable pattern from the ceramic mold around the core in the treatment support; g) casting metal into the ceramic mold around the core in the treatment support; h) allowing the molten metal to solidify to the solid cast component and i) removing the ceramic mold and the core from the cast component.

Classes IPC  ?

• B22C 7/02 - Modèles perdus
• B22C 9/10 - NoyauxFabrication ou mise en place des noyaux

Abrégé

A shell mold for use in investment casting of a component from a casting material comprises a shell mold body which is produced using a direct digital manufacturing process and at least one structural support which is formed integrally with the shell mold body during the direct digital manufacturing process. The shell mold body comprises an outer surface and a cavity which conforms to the shape of the component, and the at least one structural support is located on the outer surface of the shell mold body.

Classes IPC  ?

• B22C 9/02 - Moules en sable ou moules analogues pour pièces coulées