CN115446948A - 3D printing method for photocuring formed ceramic based on semi-cured support - Google Patents
3D printing method for photocuring formed ceramic based on semi-cured support Download PDFInfo
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- CN115446948A CN115446948A CN202210998446.2A CN202210998446A CN115446948A CN 115446948 A CN115446948 A CN 115446948A CN 202210998446 A CN202210998446 A CN 202210998446A CN 115446948 A CN115446948 A CN 115446948A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 95
- 238000000016 photochemical curing Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010146 3D printing Methods 0.000 title claims abstract description 18
- 238000001723 curing Methods 0.000 claims abstract description 65
- 238000007639 printing Methods 0.000 claims description 43
- 239000002994 raw material Substances 0.000 claims description 29
- 239000011347 resin Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 238000007711 solidification Methods 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 230000008023 solidification Effects 0.000 claims description 7
- 239000002002 slurry Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000000306 component Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
The invention discloses a photocuring formed ceramic 3D printing method based on semi-curing support, belongs to the technical field of photocuring 3D printing, and aims to solve the problem that the existing support cannot effectively protect thin and thin structures of printed parts, so that the thin and thin structures are extruded and deformed or damaged by slurry. The curing support frame protects the semi-curing support from being damaged, the semi-curing support protects the ceramic core part from being damaged, the curing support frame and the ceramic core part are cured based on laser scanning with different powers, the semi-curing support is in a colloidal state, the colloidal semi-curing support has no flowability, the ceramic core part can be well protected, and the ceramic core part is particularly in a thin and thin structure. The invention is suitable for a 3D printing method of photocuring forming ceramic based on semi-curing support.
Description
Technical Field
The invention belongs to the technical field of photocuring 3D printing, and particularly relates to a photocuring forming ceramic 3D printing method based on semi-cured support.
Background
3D printing technology, additive manufacturing technology, has received increasing attention as an emerging manufacturing strategy. 3D printing is being combined with the fields of chemistry, engineering, materials, medicine, etc., and existing forming and application modes are being gradually changed. The 3D printing technology is based on the rapid molding of the digital model file, and breaks through the traditional molding mode. The forming requirement is met by stacking materials layer by layer, and a complex structure which cannot be realized or is difficult to manufacture by a traditional method can be quickly realized. The material with a certain three-dimensional structure can be prepared by layer-by-layer printing, so that the design cost and the operation difficulty are reduced.
As a new 3D printing technology, the ceramic 3D printing technology has the advantages that the ceramic product can be quickly and efficiently manufactured without depending on a die. Ceramic 3D printing technology can be subdivided into many small branches due to differences in the molding principle. The technology which has the best printing effect and the best prospect and is accepted in the industry at present is a three-dimensional photocuring molding technology. According to the technology, the photocuring material formed by mixing the ceramic powder and the photosensitive resin is used as a printing raw material, the material with a certain three-dimensional structure can be prepared by printing layer by layer, a complex structure which cannot be realized or is difficult to manufacture by a traditional method can be quickly realized, and the design cost and the operation difficulty are reduced.
When the ceramic 3D printing technology is used for printing parts at the present stage, a supporting piece needs to be designed for bearing the printed parts. However, when the printed part has a thin structure, the existing support cannot prevent uncured slurry around the thin structure from extruding the thin structure in the printing process, and then the thin structure is deformed or damaged by the extrusion of the slurry.
Disclosure of Invention
The invention aims to: the semi-cured support-based 3D printing method for the photocuring formed ceramic solves the problem that an existing support cannot effectively protect thin and thin structures of printed parts, and then the thin and thin structures are extruded and deformed or damaged by slurry.
The technical scheme adopted by the invention is as follows:
A3D printing method of photocuring formed ceramic based on semi-solidified support comprises the following steps:
(1) Acquiring the structure of a ceramic core part to be printed, and designing a three-dimensional support structure of the ceramic core part based on the structure of the ceramic core part;
the three-dimensional support structure comprises a semi-solidified support for coating the ceramic core part and a solidified support outer frame surrounding the semi-solidified support;
(2) Slicing the ceramic core part and the three-dimensional supporting structure on a printer to obtain slicing data of the ceramic core part and the three-dimensional supporting structure, and automatically writing a laser scanning path according to preset parameters;
(3) The printing raw material is a paste raw material formed by mixing ceramic powder and photosensitive resin, a layer of paste raw material is coated on a printing platform by a scraper, then a top laser scans the curing power at the position of the ceramic core part to be cured and the position of a curing support outer frame according to a preset laser scanning path, and the laser scanning of the semi-curing power is performed at the semi-curing support position to be semi-cured;
(4) The photosensitive resin in the paste raw material is subjected to photocuring reaction to cure and form the ceramic core part and the curing support outer frame, and simultaneously, the semi-cured support forms a colloidal structure;
(5) After one layer of solidification and semi-solidification is completed, the printing platform descends;
(6) And (5) repeating the steps (3) to (5) until the printing is finished.
Further, in the step (1), the semi-cured support is a sheet stacking structure.
Further, the thickness of the sheet stacking structure is 0.05-0.2mm.
Further, in the step (3), the semi-curing power is 20% -50% of the curing power.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the curing support outer frame protects the semi-curing support from being damaged, the semi-curing support protects the ceramic core part from being damaged, the curing support outer frame and the ceramic core part are cured based on laser scanning with different powers, the semi-curing support is in a colloidal state, the colloidal semi-curing support has no fluidity, the ceramic core part can be well protected, and particularly, the ceramic core part can be prevented from being deformed or damaged due to extrusion of surrounding uncured slurry in the printing process aiming at thin and thin structures of the ceramic core part.
2. According to the invention, the semi-solidified support is stacked in sheets of 0.05-0.2mm, and the semi-solidified support can be peeled layer by layer after printing is finished, so that the semi-solidified support and the ceramic core part can be conveniently separated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:
FIG. 1 is a schematic view of a three-dimensional support structure of the present invention;
FIG. 2 is a schematic of a slice of the present invention;
FIG. 3 is a schematic view of the curing support frame and ceramic core components of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: reference numerals and letters designate similar items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the present product conventionally places when used, and are only intended to simplify the description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; mechanical connection or electrical connection can be realized; the two original pieces can be directly connected or indirectly connected through an intermediate medium, or the two original pieces can be communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
A3D printing method of photocuring formed ceramic based on semi-solidified support comprises the following steps:
(1) Acquiring the structure of a ceramic core part to be printed, and designing a three-dimensional support structure of the ceramic core part based on the structure of the ceramic core part;
the three-dimensional support structure comprises a semi-solidified support for coating the ceramic core part and a solidified support outer frame surrounding the semi-solidified support; the semi-solidified support is of a sheet stacking structure, and the thickness of the sheet stacking structure is 0.05mm;
(2) Slicing the ceramic core part and the three-dimensional supporting structure on a printer to obtain slicing data of the ceramic core part and the three-dimensional supporting structure, and automatically writing a laser scanning path according to preset parameters;
(3) The printing raw material adopts a paste raw material formed by mixing ceramic powder and photosensitive resin, a layer of paste raw material is coated on a printing platform by a scraper, then a top laser scans the curing power at the position of a ceramic core part to be cured and the position of a curing support outer frame according to a preset laser scanning path, and scans the semi-curing power at the semi-curing support position to be semi-cured; the semi-curing power is 20% of the curing power;
(4) The photosensitive resin in the paste raw material is subjected to photocuring reaction to cure and form the ceramic core part and the curing support outer frame, and simultaneously, the semi-cured support forms a colloidal structure;
(5) After one layer of solidification and semi-solidification is completed, the printing platform descends;
(6) And (5) repeating the steps (3) to (5) until the printing is finished.
Example 2
A3D printing method of photocuring formed ceramic based on semi-solidified support comprises the following steps:
(1) Acquiring the structure of a ceramic core part to be printed, and designing a three-dimensional supporting structure of the ceramic core part based on the structure of the ceramic core part;
the three-dimensional support structure comprises a semi-solidified support for coating the ceramic core part and a solidified support outer frame surrounding the semi-solidified support; the semi-solidified support is of a sheet stacking structure, and the thickness of the sheet stacking structure is 0.2mm;
(2) Slicing the ceramic core part and the three-dimensional supporting structure on a printer to obtain slicing data of the ceramic core part and the three-dimensional supporting structure, and automatically writing a laser scanning path according to preset parameters;
(3) The printing raw material is a paste raw material formed by mixing ceramic powder and photosensitive resin, a layer of paste raw material is coated on a printing platform by a scraper, then a top laser scans the curing power at the position of the ceramic core part to be cured and the position of a curing support outer frame according to a preset laser scanning path, and the laser scanning of the semi-curing power is performed at the semi-curing support position to be semi-cured; the semi-curing power is 50% of the curing power;
(4) The photosensitive resin in the paste raw material is subjected to photocuring reaction to cure and form the ceramic core part and the curing support outer frame, and simultaneously, the semi-cured support forms a colloidal structure;
(5) After one layer of solidification and semi-solidification is completed, the printing platform descends;
(6) And (5) repeating the steps (3) to (5) until the printing is finished.
Example 3
A3D printing method for photocuring forming ceramic based on semi-cured support comprises the following steps:
(1) Acquiring the structure of a ceramic core part to be printed, and designing a three-dimensional supporting structure of the ceramic core part based on the structure of the ceramic core part;
the three-dimensional support structure comprises a semi-solidified support for coating the ceramic core part and a solidified support outer frame surrounding the semi-solidified support; the semi-solidified support is of a sheet stacking structure, and the thickness of the sheet stacking structure is 0.1mm;
(2) Slicing the ceramic core part and the three-dimensional supporting structure on a printer to obtain slicing data of the ceramic core part and the three-dimensional supporting structure, and automatically compiling a laser scanning path according to preset parameters;
(3) The printing raw material adopts a paste raw material formed by mixing ceramic powder and photosensitive resin, a layer of paste raw material is coated on a printing platform by a scraper, then a top laser scans the curing power at the position of a ceramic core part to be cured and the position of a curing support outer frame according to a preset laser scanning path, and scans the semi-curing power at the semi-curing support position to be semi-cured; the semi-curing power is 30% of the curing power;
(4) The photosensitive resin in the paste raw material is subjected to photocuring reaction, so that the ceramic core part and the curing support outer frame are cured and molded, and meanwhile, the semi-cured support forms a colloidal structure;
(5) After one layer of solidification and semi-solidification is completed, the printing platform descends;
(6) And (5) repeating the steps (3) to (5) until the printing is finished.
Example 4
A3D printing method of photocuring formed ceramic based on semi-solidified support comprises the following steps:
(1) Acquiring the structure of a ceramic core part to be printed, and designing a three-dimensional supporting structure of the ceramic core part based on the structure of the ceramic core part;
the three-dimensional support structure comprises a semi-solidified support for coating the ceramic core part and a solidified support outer frame surrounding the semi-solidified support; the semi-solidified support is of a sheet stacking structure, and the thickness of the sheet stacking structure is 0.15mm;
(2) Slicing the ceramic core part and the three-dimensional supporting structure on a printer to obtain slicing data of the ceramic core part and the three-dimensional supporting structure, and automatically compiling a laser scanning path according to preset parameters;
(3) The printing raw material is a paste raw material formed by mixing ceramic powder and photosensitive resin, a layer of paste raw material is coated on a printing platform by a scraper, then a top laser scans the curing power at the position of the ceramic core part to be cured and the position of a curing support outer frame according to a preset laser scanning path, and the laser scanning of the semi-curing power is performed at the semi-curing support position to be semi-cured; the semi-curing power is 40% of the curing power;
(4) The photosensitive resin in the paste raw material is subjected to photocuring reaction to cure and form the ceramic core part and the curing support outer frame, and simultaneously, the semi-cured support forms a colloidal structure;
(5) After one layer of solidification and semi-solidification is completed, the printing platform descends;
(6) And (5) repeating the steps (3) to (5) until the printing is finished.
Example 5
A3D printing method for photocuring forming ceramic based on semi-cured support comprises the following steps:
(1) Acquiring the structure of a ceramic core part to be printed, and designing a three-dimensional support structure of the ceramic core part based on the structure of the ceramic core part;
the three-dimensional support structure comprises a semi-solidified support for coating the ceramic core part and a solidified support outer frame surrounding the semi-solidified support; the semi-solidified support is of a sheet stacking structure, and the thickness of the sheet stacking structure is 0.08mm;
(2) Slicing the ceramic core part and the three-dimensional supporting structure on a printer to obtain slicing data of the ceramic core part and the three-dimensional supporting structure, and automatically compiling a laser scanning path according to preset parameters;
(3) The printing raw material is a paste raw material formed by mixing ceramic powder and photosensitive resin, a layer of paste raw material is coated on a printing platform by a scraper, then a top laser scans the curing power at the position of the ceramic core part to be cured and the position of a curing support outer frame according to a preset laser scanning path, and the laser scanning of the semi-curing power is performed at the semi-curing support position to be semi-cured; the semi-curing power is 25% of the curing power;
(4) The photosensitive resin in the paste raw material is subjected to photocuring reaction to cure and form the ceramic core part and the curing support outer frame, and simultaneously, the semi-cured support forms a colloidal structure;
(5) After one layer of solidification and semi-solidification is completed, the printing platform descends;
(6) And (5) repeating the steps (3) to (5) until the printing is finished.
The above description is an embodiment of the present invention. The foregoing is a preferred embodiment of the present invention, and the preferred embodiments in the preferred embodiments can be combined and used in any combination if not obviously contradictory or prerequisite to a certain preferred embodiment, and the specific parameters in the examples and the embodiments are only for the purpose of clearly illustrating the verification process of the invention and are not intended to limit the patent protection scope of the present invention, which is subject to the claims and all equivalent changes made by the description of the present invention shall be included in the protection scope of the present invention.
Claims (4)
1. A3D printing method for photocuring formed ceramic based on semi-solidified support is characterized by comprising the following steps:
(1) Acquiring the structure of a ceramic core part to be printed, and designing a three-dimensional support structure of the ceramic core part based on the structure of the ceramic core part;
the three-dimensional support structure comprises a semi-solidified support for coating the ceramic core part and a solidified support outer frame surrounding the semi-solidified support;
(2) Slicing the ceramic core part and the three-dimensional supporting structure on a printer to obtain slicing data of the ceramic core part and the three-dimensional supporting structure, and automatically compiling a laser scanning path according to preset parameters;
(3) The printing raw material is a paste raw material formed by mixing ceramic powder and photosensitive resin, a layer of paste raw material is coated on a printing platform by a scraper, then a top laser scans the curing power at the position of the ceramic core part to be cured and the position of a curing support outer frame according to a preset laser scanning path, and the laser scanning of the semi-curing power is performed at the semi-curing support position to be semi-cured;
(4) The photosensitive resin in the paste raw material is subjected to photocuring reaction to cure and form the ceramic core part and the curing support outer frame, and simultaneously, the semi-cured support forms a colloidal structure;
(5) After one layer of solidification and semi-solidification is completed, the printing platform descends;
(6) And (5) repeating the steps (3) to (5) until the printing is finished.
2. The 3D printing method for the semi-solidified support-based photocuring formed ceramic, according to the claim 1, wherein in the step (1), the semi-solidified support is in a sheet stacking structure.
3. The semi-cured support-based photocuring forming ceramic 3D printing method as set forth in claim 2, wherein the thickness of the sheet stacking structure is 0.05-0.2mm.
4. The semi-curing support-based photocuring formed ceramic 3D printing method according to claim 1, wherein in the step (3), the semi-curing power is 20% -50% of the curing power.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07100939A (en) * | 1993-10-06 | 1995-04-18 | C Met Kk | Photosetting shaping method for easy removal of auxiliary support |
| US20160107234A1 (en) * | 2013-04-26 | 2016-04-21 | Materialise N.V. | Hybrid support systems and methods of generating a hybrid support system using three dimensional printing |
| CN110480792A (en) * | 2019-08-01 | 2019-11-22 | 苏州铼赛智能科技有限公司 | Manufacturing method, system, 3D printing equipment and image processing method |
| CN111098387A (en) * | 2020-01-17 | 2020-05-05 | 中国科学院金属研究所 | Photocuring 3D printing preparation method for complex double-wall silicon-based ceramic mold core |
| CN111805687A (en) * | 2020-07-07 | 2020-10-23 | 南京理工大学 | 3D printing forming device and method for ceramic matrix composite |
| CN112519203A (en) * | 2020-12-02 | 2021-03-19 | 哈尔滨工业大学 | Efficient nondestructive supporting method for surface projection photocuring 3D printing based on gray level exposure |
| US20220168732A1 (en) * | 2019-08-22 | 2022-06-02 | M.O.P Co., Ltd | Ceramic microfluidic reactor and manufacturing method therefor |
-
2022
- 2022-08-19 CN CN202210998446.2A patent/CN115446948A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07100939A (en) * | 1993-10-06 | 1995-04-18 | C Met Kk | Photosetting shaping method for easy removal of auxiliary support |
| US20160107234A1 (en) * | 2013-04-26 | 2016-04-21 | Materialise N.V. | Hybrid support systems and methods of generating a hybrid support system using three dimensional printing |
| CN110480792A (en) * | 2019-08-01 | 2019-11-22 | 苏州铼赛智能科技有限公司 | Manufacturing method, system, 3D printing equipment and image processing method |
| US20220168732A1 (en) * | 2019-08-22 | 2022-06-02 | M.O.P Co., Ltd | Ceramic microfluidic reactor and manufacturing method therefor |
| CN111098387A (en) * | 2020-01-17 | 2020-05-05 | 中国科学院金属研究所 | Photocuring 3D printing preparation method for complex double-wall silicon-based ceramic mold core |
| CN111805687A (en) * | 2020-07-07 | 2020-10-23 | 南京理工大学 | 3D printing forming device and method for ceramic matrix composite |
| CN112519203A (en) * | 2020-12-02 | 2021-03-19 | 哈尔滨工业大学 | Efficient nondestructive supporting method for surface projection photocuring 3D printing based on gray level exposure |
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