CN114378917B - Large-format slurry 3D printing method capable of adjusting liquid level - Google Patents
Large-format slurry 3D printing method capable of adjusting liquid level Download PDFInfo
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- CN114378917B CN114378917B CN202111589535.3A CN202111589535A CN114378917B CN 114378917 B CN114378917 B CN 114378917B CN 202111589535 A CN202111589535 A CN 202111589535A CN 114378917 B CN114378917 B CN 114378917B
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- 239000002002 slurry Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000010146 3D printing Methods 0.000 title claims abstract description 32
- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 238000007639 printing Methods 0.000 claims abstract description 120
- 239000000758 substrate Substances 0.000 claims abstract description 5
- 239000000919 ceramic Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 8
- 239000010410 layer Substances 0.000 abstract description 41
- 239000002356 single layer Substances 0.000 abstract description 7
- 238000007781 pre-processing Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 238000000110 selective laser sintering Methods 0.000 description 2
- 239000007787 solid Substances 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
- 239000011230 binding agent Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- 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
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
-
- 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
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/0063—Control arrangements
- B28B17/0072—Product control or inspection
-
- 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
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/0063—Control arrangements
- B28B17/0081—Process control
-
- 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
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/02—Conditioning the material prior to shaping
- B28B17/026—Conditioning ceramic materials
-
- 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
-
- 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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/10—Pre-treatment
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Automation & Control Theory (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
The invention relates to the technical field of 3D printing, in particular to a large-format slurry 3D printing method capable of adjusting liquid level, which comprises the steps of preprocessing printing slurry; dividing a plurality of printing intervals for the workpiece, and inputting the pretreated printing slurry; the method comprises the steps that a substrate and a supporting piece are arranged and are respectively connected with a workpiece, the printing paste is scraped layer by a first scraper, and the printing paste is solidified layer by utilizing laser; when the liquid level is higher than the workpiece, the second scraper dredges excess printing slurry to enter the discharge port. Compared with the prior art, the liquid level adjustable large-format slurry 3D printing method provided by the invention can effectively avoid the phenomenon that the printing slurry is higher than the workpiece, further avoid the phenomenon that the workpiece is partially incapable of being solidified or the single-layer thickness is thicker when being solidified, and improve the success rate of printing and forming the workpiece.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a large-format slurry 3D printing method capable of adjusting liquid level.
Background
The 3D printing technology is also called additive manufacturing technology, and is a manufacturing method for directly manufacturing a three-dimensional physical entity model completely consistent with a corresponding mathematical model by adding a material layer-by-layer manufacturing mode based on three-dimensional CAD model data, which is contrary to the traditional machining method. New technological routes and implementation methods are continuously expanded by the 3D printing technology, and the more mature technology mainly comprises the following steps: light curing (SLA) forming, fused deposition Fabrication (FD) forming, selective Laser Sintering (SLS) forming, selective Laser Melting (SLM) forming, and binder jetting (3 DP) forming.
The 3D printing technology of the material is an important development field in China, although China patent application (publication No. CN 112743658A) discloses a ceramic 3D printing method, the printing method is to place the printing material in a 3D printing working environment, print under the conditions of 140-160 mw of laser power and 1750-1950 mm/s of solid scanning speed of laser parts, and finish printing on a printing standard layer according to a preset printing program, wherein the scanning speed of laser contours is 3500-3900 mm/s.
However, in the prior art, in the 3D printing process of the slurry, the liquid level cannot be adjusted, and because the slurry has the characteristic of easy flow and the reason of forming sequence, the phenomenon that the slurry is higher than the workpiece easily occurs in the growth process of the workpiece, so that the workpiece cannot be locally solidified or the single-layer thickness is thicker when the workpiece is solidified.
Disclosure of Invention
In order to solve the defect that the liquid level adjustment cannot be performed in the prior art of the existing 3D printing, the invention provides a large-format slurry 3D printing method capable of adjusting the liquid level, which comprises the following steps of
Pretreating printing slurry;
dividing a plurality of printing intervals for the workpiece, and inputting the pretreated printing slurry;
the method comprises the steps that a substrate and a supporting piece are arranged and are respectively connected with a workpiece, printing slurry is scraped layer by layer through a first scraper, and the slurry ceramic layer is solidified layer by layer through laser; when the liquid level is higher than the workpiece, the second scraper dredges excess printing slurry to enter the discharge port.
In one embodiment, the pre-treating comprises stirring the slurry ceramic with a ball mill; wherein the stirring speed is 180-220r/min, and the stirring time is 6-8h.
In an embodiment, at least 3 printing intervals are divided for the workpiece, each printing interval is provided with a plurality of interval layers, and the height of each interval layer is 0.04mm.
In an embodiment, the printing section inputs a corresponding amount of the printing paste according to different heights of the workpiece, and the first doctor blade operates at a corresponding speed.
In an embodiment, when the printing interval meets a first height, the printing slurry input amount is M, and the running speed of the first scraper is V;
when the printing interval meets the second height, the input amount of the printing slurry is 0.4-0.6M, and the running speed of the first scraper is 0.4-0.5V;
when the third height is satisfied corresponding to the printing section, the printing paste input amount is 0.6 to 0.8M, and the running speed of the first scraper is 0.3 to 0.5V.
In one embodiment, the first height is 0-30% of the height of the workpiece, the second height is 30% -70% of the height of the workpiece, and the third height is 70% -100% of the height of the workpiece.
In one embodiment, in the slurry 3D printing process, a plurality of workpieces are provided, and a distance between two adjacent workpieces is at least 10mm.
In one embodiment, the second scraper is configured to drain excess printing paste into the discharge port when the liquid level is 0.1mm above the workpiece.
In an embodiment, the second scraper is disposed on two sides of the first scraper, and the shape of the second scraper is arc-shaped.
In an embodiment, the supporting member is provided with a diversion hole, and the printing paste in the supporting member flows to the discharge hole through the diversion hole under the driving of the second scraper.
Based on the above, compared with the prior art, the large-format slurry 3D printing method capable of adjusting the liquid level provided by the invention has the advantages that a plurality of printing intervals are divided for a workpiece, corresponding printing slurry is input, the printing slurry is scraped by a first scraper layer by layer, and the printing slurry ceramic layer by layer is solidified by utilizing laser; when the liquid level is higher than the workpiece, the second scraper dredges the excessive printing paste into the discharge port, so that the phenomenon that the printing paste is higher than the workpiece can be effectively avoided, the phenomenon that the thickness of a single layer is thicker when the workpiece is partially incapable of being solidified or solidified is avoided, and the success rate of printing and forming of the workpiece is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
For a clearer description of embodiments of the invention or of the solutions of the prior art, the drawings that are needed in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art; the positional relationships described in the drawings in the following description are based on the orientation of the elements shown in the drawings unless otherwise specified.
FIG. 1 is a schematic flow chart of a 3D printing method for slurry capable of adjusting liquid level;
fig. 2 is a schematic structural view of a deflector hole provided by the present invention.
Reference numerals:
10 support 11 diversion holes
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention; the technical features designed in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that all terms used in the present invention (including technical terms and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs and are not to be construed as limiting the present invention; it will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The ceramic 3D printing technology is an advanced technology which is relatively popular at present, has good technical prospect and large development space, and a plurality of domestic and foreign enterprises and research institutions are added into the development team of the technology. The development of ceramic materials is certainly the focus of this technology. From the current state of the ceramic 3D printing industry, materials are classified into two systems, paste and slurry.
The molding method is classified into a stereolithography method (sla) and a digital light processing method (dlp). In the aspect of material preparation, the domestic relative foreign gap is large, and the solid content, stability and rheological property of the material are difficult to solve no matter in a slurry system or a paste system. Compared with a paste system, the paste system has the advantages that the paste is easy to appear higher than a workpiece in the growth process of the workpiece due to the flowable property and the molding sequence of the paste, so that the single-layer thickness of the workpiece is thicker when the workpiece cannot be solidified or is solidified.
For this purpose, the invention provides a liquid level-adjustable large-format slurry 3D printing method, which comprises
Pretreating printing slurry;
dividing a plurality of printing intervals for the workpiece, and inputting the pretreated printing slurry;
the method comprises the steps that a substrate and a supporting piece are arranged and are respectively connected with a workpiece, printing slurry is scraped layer by layer through a first scraper, and the slurry ceramic layer is solidified layer by layer through laser; when the liquid level is higher than the workpiece, the second scraper dredges excess printing slurry to enter the discharge port.
In specific implementation, the printing paste is first pretreated, specifically, the paste ceramic is stirred by using a ball mill, in this embodiment, the stirring speed may be 180-220r/min, preferably 200r/min, and the stirring time may be 6-8h, preferably 8h.
Before printing a workpiece, firstly dividing a plurality of printing intervals for the workpiece, specifically, dividing at least 3 printing intervals for the workpiece, and inputting corresponding printing slurry according to each printing interval; each printing interval can be further provided with a plurality of interval layers, so that the situation that printing slurry is higher than a workpiece in the process of printing, growing and forming the workpiece is avoided, the thickness of a single layer is thicker when the workpiece cannot be locally solidified or solidified, the height of each interval layer can be 0.04mm, the printing slurry is scraped layer by a first scraper, and according to the shape of the workpiece, the printing slurry is sequentially solidified layer by layer from bottom to top by utilizing laser to complete the growth and forming of the workpiece.
In the actual printing and growing process of the workpiece, according to different heights of the workpiece, a corresponding amount of printing paste is input into each printing interval, and the first scraper runs at a corresponding speed so as to ensure that the printing paste cannot be higher than the workpiece, and avoid the phenomenon that the single-layer thickness is thicker when the workpiece cannot be solidified or solidified.
Specifically, when the corresponding printing interval meets the first height, the input amount of printing slurry is M, and the running speed of the first scraper is V; when the corresponding printing interval meets the second height, the input quantity of printing slurry is 0.4-0.6M, and the running speed of the first scraper is 0.4-0.5V; when the corresponding printing interval meets the third height, the input amount of printing slurry is 0.6-0.8M, and the running speed of the first scraper is 0.3-0.5V.
Wherein the first height is 0-30% of the height of the workpiece, the second height is 30-70% of the height of the workpiece, and the third height is 70-100% of the height of the workpiece.
For example, in this embodiment, the printing section may be divided into 6 printing sections, taking each section layer height of 0.04mm as an example, for a total of 3000 layers, where the printing section 1:0-80 layers; printing section 2: 81-280 layers; printing section 3:281-800 layers; printing section 4:801-1500 layers; printing section 5: 1501-2500 layers; printing section 6:2500-3000 layers.
The printing paste in the printing interval 1 can be input into the printing interval to be 65-75ml, and the first scraper speed is 20-25mm/s; the printing paste in the printing interval 2 can be input into 50-55ml, and the first scraper speed is 40-45mm/s; the printing paste in the printing interval 3 can be input into 60-70ml, and the first scraper speed is 60-65mm/s; the printing paste in the printing interval 4 can be input into 55-60ml, and the first scraper speed is 30-35mm/s; the printing paste in the printing interval 5 can be input into the printing interval to be 45-55ml, and the first scraper speed is 20-25mm/s; the printing paste in the printing section 6 may be fed at 35-40ml and the first doctor blade speed at 10-15mm/s.
In the slurry 3D printing process, a plurality of workpieces can be arranged for printing at the same time so as to improve the printing efficiency of the workpieces, and enough drainage space needs to be arranged between every two workpieces, preferably, the distance between every two adjacent workpieces is at least 10mm, and the distance between every two adjacent workpieces can be 10-12mm; and each workpiece is parallel to the horizontal direction and perpendicular to the first scraper.
A continuous gap is reserved between every two workpieces perpendicular to the direction of the first scraper, so that redundant printing slurry is conveniently introduced into a discharge port, a dam is prevented from being formed, the phenomenon that the liquid level of the printing slurry is increased to erode a workpiece curing layer, the thickness of the curing layer is different, and the printing and forming of the workpiece fail is avoided.
According to the liquid level measuring tool, when the liquid level of the printing paste is higher than 0.1mm of the workpiece, the second scraper is used for dredging the excessive printing paste into the discharge port, preferably, the second scraper is arranged on two sides of the first scraper, and the shape of the second scraper can be arc-shaped.
When the workpiece is printed, grown and solidified, the substrate and the supporting piece 10 are arranged to be connected with the workpiece so as to be beneficial to solidification and growth of the workpiece; preferably, as shown in fig. 2, in order to enable the first scraper to smoothly drain the excessive printing paste into the discharge hole, a diversion hole 11 is arranged on the supporting member 10, and the printing paste in the supporting member flows to the discharge hole through the diversion hole under the driving of the first scraper, so that the situation that the supporting member is sealed to form a dam is avoided, the liquid level of the printing paste is increased, the workpiece curing layer is eroded, the thickness of the curing layer is different, and the printing and forming of the workpiece fail.
In summary, compared with the prior art, according to the large-format slurry 3D printing method capable of adjusting the liquid level, the printing slurry is input by dividing a plurality of printing intervals for a workpiece, the printing slurry is scraped by the first scraper layer by layer, and the printing slurry ceramic layer by layer is solidified by utilizing laser; when the liquid level is higher than the workpiece, the second scraper dredges the excessive printing paste into the discharge port, so that the phenomenon that the printing paste is higher than the workpiece can be effectively avoided, the phenomenon that the thickness of a single layer is thicker when the workpiece is partially incapable of being solidified or solidified is avoided, and the success rate of printing and forming of the workpiece is improved.
In addition, it should be understood by those skilled in the art that although many problems exist in the prior art, each embodiment or technical solution of the present invention may be modified in only one or several respects, without having to solve all technical problems listed in the prior art or the background art at the same time. Those skilled in the art will understand that nothing in one claim should be taken as a limitation on that claim.
Although terms such as support and deflector are used more herein, the possibility of using other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention; the terms first, second and the like in the description and in the claims of embodiments of the invention and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. A liquid level adjustable large-format slurry 3D printing method is characterized in that: comprising
Pretreating printing slurry;
dividing a plurality of printing intervals for the workpiece, and inputting the printing slurry after corresponding pretreatment;
the method comprises the steps that a substrate and a supporting piece are arranged and are respectively connected with a workpiece, the printing paste is scraped layer by a first scraper, and the printing paste is solidified layer by utilizing laser; when the liquid level is higher than the workpiece, the second scraper dredges excess printing slurry to enter a discharge port;
when the printing interval meets a first height, the input quantity of the printing slurry is M, and the running speed of the first scraper is V; when the printing interval meets the second height, the input amount of the printing slurry is 0.4-0.6M, and the running speed of the first scraper is 0.4-0.5V; when the printing interval meets a third height, the input amount of the printing slurry is 0.6-0.8M, and the running speed of the first scraper is 0.3-0.5V;
the first height is 0-30% of the height of the workpiece, the second height is 30-70% of the height of the workpiece, and the third height is 70-100% of the height of the workpiece.
2. The level-adjustable large format slurry 3D printing method according to claim 1, characterized in that: the pretreatment comprises stirring slurry ceramics by using a ball mill; wherein the stirring speed is 180-220r/min, and the stirring time is 6-8h.
3. The level-adjustable large format slurry 3D printing method according to claim 1, characterized in that: dividing the workpiece into at least 3 printing intervals, wherein each printing interval is provided with a plurality of interval layers, and the height of each interval layer is 0.04mm.
4. The level-adjustable large format slurry 3D printing method according to claim 1, characterized in that: and according to different heights of the workpiece, inputting a corresponding amount of printing paste into the printing section, and running a corresponding speed of the first scraper.
5. The level-adjustable large format slurry 3D printing method according to claim 1, characterized in that: in the slurry 3D printing process, when a plurality of workpieces are arranged, the distance between every two adjacent workpieces is at least 10mm.
6. The level-adjustable large format slurry 3D printing method according to claim 1, characterized in that: when the liquid level is higher than 0.1mm of the workpiece, the second scraper dredges excess printing slurry to enter a discharge port.
7. The level-adjustable large format slurry 3D printing method according to claim 1, characterized in that: the second scrapers are arranged on two sides of the first scraper, and the shape of the second scraper is arc-shaped.
8. The level-adjustable large format slurry 3D printing method according to claim 1, characterized in that: and the support piece is provided with a diversion hole, and the printing slurry in the support piece flows to the discharge hole through the diversion hole under the driving of the first scraper.
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| CN202111589535.3A CN114378917B (en) | 2021-12-23 | 2021-12-23 | Large-format slurry 3D printing method capable of adjusting liquid level |
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| CN202111589535.3A CN114378917B (en) | 2021-12-23 | 2021-12-23 | Large-format slurry 3D printing method capable of adjusting liquid level |
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| CN114378917B true CN114378917B (en) | 2024-01-05 |
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