METHOD FOR PRODUCING A CERAMIC CORE FOR THE PRODUCTION OF A CASTING HAVING HOLLOW STRUCTURES AND CERAMIC CORE
원문보기
IPC분류정보
국가/구분
United States(US) Patent
공개
국제특허분류(IPC7판)
B22C-009/10
B22C-009/18
B33Y-080/00
출원번호
16962632
(2019-01-17)
공개번호
20200338630
(2020-10-29)
우선권정보
DE-10 2018 200 705.5 (2018-01-17)
국제출원번호
PCT/EP2019/051169
(2019-01-17)
발명자
/ 주소
Beele, Wolfram
출원인 / 주소
Beele, Wolfram
인용정보
피인용 횟수 :
0인용 특허 :
0
초록▼
The invention relates to a method for producing a ceramic core (4, 4′)—and to a core produced by this method—for preparing the production of a casting having hollow structures which the ceramic core is configured to form, making use of a 3D model of digital geometric co-ordinates of the casting, whe
The invention relates to a method for producing a ceramic core (4, 4′)—and to a core produced by this method—for preparing the production of a casting having hollow structures which the ceramic core is configured to form, making use of a 3D model of digital geometric co-ordinates of the casting, wherein the method comprises the following steps: a) Producing by means of casting technology at least one first portion (4) of the ceramic core including at least one first joining structure (24) in a surface of the portion; b) Producing by means of casting technology or 3D printing technology at least one second portion (4′) of the ceramic core including at least one second joining structure (26) matching the first joining structure, in a surface of the portion, wherein the production by means of casting technology comprises the following steps: i. Unpressurized or low-pressure casting of a ceramic core blank, and specifically with an oversize relative to the core (4, 4′) according to the geometric co-ordinates; ii. CNC processing of the core (4, 4′), according to the 3D model, in a first CNC processing method; c) joining the at least one first and at least one second portion of the core at the matching joining structures to form the core according to geometric co-ordinates of the casting.
대표청구항▼
1. A method for producing a ceramic core for preparing the production of a casting having hollow structures which the ceramic core is configured to form, using a 3D model of digital geometrical co-ordinates of the casting, the method comprising acts of: a) producing at least one first portion of the
1. A method for producing a ceramic core for preparing the production of a casting having hollow structures which the ceramic core is configured to form, using a 3D model of digital geometrical co-ordinates of the casting, the method comprising acts of: a) producing at least one first portion of the ceramic core using casting technology, the first portion including at least one first joining structure in a surface of the first portion;b) producing at least one second portion of the ceramic core using casting technology or 3D printing technology, the second portion including at least one second joining structure, which matches the first joining structure, in a surface of the second portion, wherein producing the at least one second portion using casting technology in act b) comprises acts of:i. unpressurized or low-pressure casting of a ceramic core blank with an oversize relative to the core according to the geometric co-ordinates; andii. CNC processing of the core, according to the 3D model, in a first CNC processing method; andc) joining the at least one first portion and the at least one second portion of the core at the matching first and second joining structures to form the core according to geometric co-ordinates of the casting. 2. A ceramic core for producing a casting having hollow structures which the ceramic core is configured to form, using a 3D model of digital geometrical co-ordinates of the casting, using a ceramic mould, wherein the core is produced by acts of: a) producing at least one first portion of the ceramic core using casting technology, the first portion including at least one first joining structure in a surface of the first portion;b) producing at least one second portion of the ceramic core using casting technology or 3D printing, the second portion including at least one second joining structure, which matches the first joining structure, in a surface of the second portion, wherein producing the at least one second portion using casting technology in act b) comprises acts of:i. unpressurized or low-pressure casting of a ceramic core blank with an oversize relative to the core according to the geometric co-ordinates; andii. CNC processing of the core, according to the 3D model, in a first CNC processing method; andc) joining the at least one first portion and the at least one second portion of the core at the matching first and second joining structures to form the core according to geometric co-ordinates of the casting. 3. The method according to claim 1, wherein act a) further comprises acts of: i. unpressurized or low-pressure casting of a ceramic core blank with an oversize relative to the core according to the geometric co-ordinates; andii. CNC processing of the core, according to the 3D model, in a first CNC processing method. 4. The method according to claim 1, wherein act i) is performed using slip casting, pressure slip casting, cold isostatic pressing, hot isostatic pressing, uniaxial pressing, hot casting, low-pressure injection moulding, gel casting or extrusion. 5. The method according to claim 1, wherein act ii) includes CNC milling. 6. The method according to claim 1, further comprising acts of: d) positioning the core in a processing holding device;e) pouring model material around the core, into a volume greater than the cubic dimensions of the casting, which, according to the 3D model, is spatially determined by the position of the core in the processing holding device, and allowing the model material to solidify;f) CNC production of an outer contour of a lost model of the casting from the solidified model material around the core, in accordance with the 3D model in a second CNC production method;g) applying a ceramic mould onto the outer contour of the lost model and forming a positioning connection of the ceramic mould with the core;h) removing the lost model from the ceramic mould around the core;i) pouring metal into the ceramic mould around the core;j) solidifying of the molten metal to form the solid casting and cooling channels; andk) removing the ceramic mould and the core from the casting. 7. The ceramic core according to claim 2, wherein act a) further comprises acts of: i. unpressurized or low-pressure casting of a ceramic core blank with an oversize relative to the core according to the geometric co-ordinates; andii. CNC processing of the core, according to the 3D model, in a first CNC processing method. 8. The ceramic core according to claim 2 wherein act i) is performed using slip casting, pressure slip casting, cold isostatic pressing, hot isostatic pressing, uniaxial pressing, hot casting, low-pressure injection moulding, gel casting or extrusion. 9. The ceramic core according to claim 2, wherein act ii) includes CNC milling.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.