CN219599847U

CN219599847U - 3D prints foamed ceramic

Info

Publication number: CN219599847U
Application number: CN202321349932.8U
Authority: CN
Inventors: 黄冠霆; 唐海; 肖雄; 余晖能; 熊学君; 邱宝付
Original assignee: Guangdong Foshan Ceramic Research Institute Holding Group Co ltd
Current assignee: Guangdong Foshan Ceramic Research Institute Holding Group Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-08-29
Anticipated expiration: 2033-05-31

Abstract

The utility model discloses a 3D printing foam ceramic, which relates to the field of ceramic production and comprises a plurality of mesh layers, supporting beams and coamings, wherein the mesh layers are provided with a plurality of meshes with consistent shapes, the meshes are uniformly distributed in the mesh layers and are surrounded by a plurality of mesh wires, the mesh layers are longitudinally distributed and are divided into an odd-numbered sequence mesh layer and an even-numbered sequence mesh layer from top to bottom, the coamings are vertically connected to the edges of the mesh layers, the odd-numbered sequence mesh layer comprises a plurality of first mesh layers, the even-numbered sequence mesh layer comprises a plurality of second mesh layers, the first mesh layers and the second mesh layers are respectively provided with a first mesh and a second mesh, and the first mesh and the second mesh are mutually staggered. The utility model can better control the strength and the size of the finished product and can improve the integral strength of the finished product.

Description

3D prints foamed ceramic

Technical Field

The utility model relates to the technical field of ceramic production, in particular to a 3D printing foam ceramic.

Background

In the casting process of molten metal, nonmetallic impurities need to be filtered, and foamed ceramics are widely applied to the filtration of high-temperature alloys such as steel, nonferrous metals, active metals and the like due to good thermal shock resistance, high refractoriness, high chemical stability and good liquid selective permeability. The existing preparation method of the commonly used foam ceramic material is an organic precursor impregnation method, firstly, a mesh is utilized to manufacture foam sponge, then the foam sponge is used as a precursor, after the sponge is cut into small blocks, the small blocks are impregnated with slurry, so that the slurry is hung, and then the foam ceramic is obtained through sintering, wherein the shape of the foam ceramic is consistent with that of the sponge precursor. However, as the sponge is made by adopting a foaming process, the arrangement of the net wires in the foamed ceramic is uncontrollable, the more incomplete net holes are after cutting, the lower the strength of the finished product is, in addition, the sponge can be deformed, and the size of the finished product is difficult to control when cutting. The finished product of the foam ceramic with the structure has lower strength and unstable volume and quality.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the 3D printing foam ceramic which can better control the strength and the size of a finished product and can improve the integral strength of the finished product.

In order to solve the technical problems, the utility model provides a 3D printing foam ceramic, which comprises a plurality of net layers, wherein a plurality of grids with consistent shapes are arranged on the net layers, the grids are uniformly distributed in the net layers, the grids are surrounded by a plurality of net wires, the net layers are longitudinally distributed, the distances between adjacent net layers are consistent, and the net layers are divided into an odd-numbered sequence net layer and an even-numbered sequence net layer from top to bottom.

The support beams are respectively connected between the odd-numbered sequence net layers and between the even-numbered sequence net layers.

The net layer is characterized by further comprising a coaming, wherein the coaming is vertically connected to the edges of the net layers, and the coaming can enclose and seal the edges of the net layers.

As an improvement of the scheme, the odd-numbered sequence net layers comprise a plurality of first net layers, the even-numbered sequence net layers comprise a plurality of second net layers, the first net layers and the second net layers are adjacently arranged, the first net layers are arranged above the second net layers, a first grid and a second grid are respectively arranged on the first net layers and the second net layers, and the first grids and the second grids are mutually staggered.

As an improvement of the above solution, the projection of the center point of the first grid falls at the edge intersection of the second grid.

As an improvement of the above scheme, the shapes and sizes of the first grid and the second grid are uniform, the shapes of the first grid and the second grid are rectangular, the common points of the adjacent 4 first grids are first intersection points, and the common points of the adjacent 4 second grids are second intersection points.

As an improvement of the scheme, the 3D printing foam ceramic further comprises a connecting beam, a gap is arranged between the first net layer and the second net layer, one end of the connecting beam is connected to the edge intersection of the first grid, and the other end of the connecting beam is connected to the second intersection.

As an improvement of the above-mentioned scheme, the first intersection points of the odd-numbered sequence of web layers are connected to each other by the support beam, and the second intersection points of the even-numbered sequence of web layers are connected to each other by the support beam.

As an improvement of the above, the gap distance between the first web layer and the second web layer is in the range of 0.5mm to 12.5mm.

As an improvement of the scheme, the thickness of the coaming plate ranges from 0.1mm to 2.5mm.

As an improvement of the scheme, the net wires are arranged in a solid mode, and the diameter of the net wires ranges from 0.2mm to 3.2mm.

As an improvement of the scheme, the cross section shape of the 3D printing foam ceramic is rectangular or circular.

The implementation of the utility model has the following beneficial effects:

the 3D printing foam ceramic is provided with a plurality of mesh layers, the mesh layers comprise a plurality of meshes with consistent shapes, the meshes are uniformly distributed in the mesh layers, the distances between adjacent mesh layers are consistent, the 3D printing foam ceramic is prepared by adopting a photo-curing 3D printing method, the photo-curing 3D printing technology can be used for controlling the distances between the mesh layers and the size and the number of the meshes, so that finished products with consistent thickness, height and other dimensions can be obtained after sintering, and meanwhile, cutting can be avoided, so that fluctuation of internal strength and size can be reduced. And 3D prints foam ceramic still includes supporting beam and bounding wall, the supporting beam is connected respectively between each odd-numbered sequence stratum reticulare and between each even-numbered sequence stratum reticulare, the bounding wall can with the edge of stratum reticulare surrounds and seals, the supporting beam can improve the linking property between the stratum reticulare, the bounding wall is equivalent to the bordure of stratum reticulare, the supporting beam with the bounding wall has improved greatly the internal strength and the outside compressive strength of stratum reticulare to improve the holistic intensity of finished product.

Drawings

FIG. 1 is a schematic perspective view of a 3D printed ceramic foam of the present utility model;

FIG. 2 is a schematic partial structural view of the 3D printed ceramic foam of the present utility model from a top view;

FIG. 3 is a schematic view of a partial structure of the 3D printed ceramic foam of the present utility model;

fig. 4 is a schematic partial structural view of the 3D printed foam ceramic of the present utility model from a front viewing angle.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent. It is only stated that the terms of orientation such as up, down, left, right, front, back, inner, outer, etc. used in this document or the imminent present utility model, are used only with reference to the drawings of the present utility model, and are not meant to be limiting in any way.

Referring to fig. 1-4, the embodiment of the utility model discloses a 3D printing foam ceramic, which comprises a plurality of mesh layers, wherein intervals are arranged between the mesh layers, the mesh layers comprise a plurality of meshes 3 with identical shapes, the meshes 3 are uniformly distributed in the mesh layers, the coverage areas of the mesh layers are identical, wherein the meshes 3 are surrounded by a plurality of mesh wires 4, the mesh layers are longitudinally distributed, the distances between adjacent mesh layers are identical, the mesh layers are divided into an odd-sequence mesh layer 1 and an even-sequence mesh layer 2 from top to bottom, the odd-sequence mesh layer 1 comprises a 1 st layer, a 3 rd layer, a 5 th layer … … layer and the like, and the even-sequence mesh layer 2 comprises a 2 nd layer, a 4 th layer, a 6 … … th layer and the like.

It should be noted that the 3D printing foam ceramic of the embodiment of the present utility model is made by 3D printing, and specifically, the net layer is formed into a final 3D printing foam ceramic product by using the existing photo-curing process. The mesh 4 and the grid 3 with preset sizes can be precisely produced by using photocuring 3D printing, and the 3D printing foamed ceramics with preset sizes can be directly produced without cutting by combining the structures of the grid 3 and the grid layer in the embodiment, so that the size of a finished product is controllable and stable. In the ceramic filter with larger size made of 3D printing foam ceramic, the strength of the formed filter is 5-6 times that of the traditional dipping method, and the strength of the formed filter is still equivalent to the normal-temperature flexural strength of the dipping method after thermal shock at 1200 ℃, so that the stability of the formed filter under the condition of rapid heating and quenching in the casting process can be ensured.

In addition, in order to control and strengthen the strength of the 3D printing foam ceramic, the 3D printing foam ceramic further comprises supporting beams 5, wherein the supporting beams 5 are respectively connected between the odd-numbered sequence of net layers 1 and between the even-numbered sequence of net layers 2, namely, the 1 st, 3 rd and 5 th … … th net layers are connected with each other by the supporting beams 5, and the 2 nd, 4 th and 6 th … … th net layers are connected with each other by the supporting beams 5. The support beams 5 are able to provide support and reinforcement for each layer of mesh. Meanwhile, the 3D printing foam ceramic further comprises a coaming 6, the coaming 6 is vertically connected to the edges of the net layers, and the coaming 6 can enclose and seal the edges of the net layers. The coaming 6 can further improve the connection stability and strength of each net layer, and meanwhile, the coaming 6 also further limits the size of a finished product, so that the size of the finished product is stable and controllable.

The embodiment of the utility model has the following beneficial effects:

the 3D printing foam ceramic is provided with a plurality of mesh layers, the mesh layers comprise a plurality of meshes 3 with consistent shapes, the meshes 3 are uniformly distributed in the mesh layers, the distances between adjacent mesh layers are consistent, the foam ceramic is manufactured by adopting a photocuring 3D printing method, the size of the meshes 3 is uniform by adopting the photocuring 3D printing technology, and the distance between the mesh layers and the size and the number of the meshes can be controlled, so that finished products with consistent sizes such as thickness, height and the like can be obtained after sintering, and meanwhile, cutting can be avoided, so that fluctuation of internal strength and size can be reduced. The 3D printing foam ceramic further comprises a supporting beam 5 and a coaming 6, the supporting beam 5 is respectively connected between each odd-numbered sequence net layer 1 and each even-numbered sequence net layer 2, the coaming 6 can enclose and seal the edges of the net layers, the supporting beam 5 can improve the connection performance between the net layers, the coaming 6 is equivalent to the edge wrapping of the net layers, and the supporting beam 5 and the coaming 6 greatly improve the internal strength and the external compressive strength of the net layers, so that the integral strength of a finished product is improved.

Specifically, the odd-numbered sequence of web layers 1 includes a plurality of first web layers 11, the first web layers 11 refer to a first layer, a third layer, a fifth layer, or the like, the even-numbered sequence of web layers 2 includes a plurality of second web layers 21, the second web layers 21 refer to a second layer, a fourth layer, a sixth layer, or the like, and the first web layers 11 and the second web layers 21 are disposed adjacently, so that the first web layers 11 and the second web layers 21 refer to web layers in such adjacently disposed relationship of the first layer and the second layer, the third layer and the fourth layer, the fifth layer and the sixth layer, and the like, the first web layers 11 and the second web layers 21 constitute one repeating unit, and the first web layers 11 are disposed above the second web layers 21 in one repeating unit. The first mesh layer 11 and the second mesh layer 21 are respectively provided with a first mesh 31 and a second mesh 32, and the first mesh 31 and the second mesh 32 are staggered with each other, so that the first mesh 31 and the second mesh 32 can avoid forming a through hole therebetween. Specifically, the projection of the center point of the first grid 31 falls at the edge intersection of the second grid 32, that is, the center point of the first grid 31 and the center point of the second grid 32 are staggered, and the staggered distance in the horizontal-vertical direction is equal to 1/2 length and 1/2 width of the second grid 32, respectively.

Further, the shapes and sizes of the first mesh 31 and the second mesh 32 are uniform, and the shapes of the first mesh 31 and the second mesh 32 are rectangular, so that adjacent 4 first meshes 31 or the second mesh 32 can enclose a "field" shape, the common point of the adjacent 4 first meshes 31 is the first intersection point 311, that is, the center point of the "field" shape enclosed by the first mesh 31 is the first intersection point 311, and the common point of the adjacent 4 second meshes 32 is the second intersection point 321, that is, the center point of the "field" shape enclosed by the second mesh 32 is the second intersection point 321.

Referring to fig. 3, in order to further improve the connection stability and strength between the mesh layers, specifically improve the connection stability and strength between the odd-numbered sequence mesh layer 1 and the even-numbered sequence mesh layer 2, the 3D printing foam ceramic further includes a connection beam 7, a gap is provided between the first mesh layer 11 and the second mesh layer 21, one end of the connection beam 7 is connected to the edge junction of the first mesh 31, and the other end is connected to the second junction 321, that is, the connection beam 7 is radially connected to each corner of the first mesh 31 from the second junction 321, so that 4 isosceles triangles are formed in space, and in this structure, the connection beam 7 also forms better support for the first mesh layer 11, thereby improving the connection stability and strength between the first mesh layer 11 and the second mesh layer 21.

Referring to fig. 4, specifically, the first intersection points 311 of the odd-numbered sequence of web layers 1 are connected to each other through the support beams 5, i.e., the support beams 5 are longitudinally connected to the first intersection points 311 to improve connection stability and strength between the odd-numbered sequence of web layers 1, and the second intersection points 321 of the even-numbered sequence of web layers 2 are connected to each other through the support beams 5, i.e., the support beams 5 are longitudinally connected to the second intersection points 321 to improve connection stability and strength between the even-numbered sequence of web layers 2. The supporting beams 5, the connecting beams 7 and the coaming 6 jointly improve the overall strength of the 3D printing foam ceramic.

In this embodiment, the gap distance between the first mesh layer 11 and the second mesh layer 21 is in the range of 0.5mm to 12.5mm, when the gap between the first mesh layer 11 and the second mesh layer 21 is smaller than 0.5mm, the overall pore is smaller, the filtering efficiency is lower, and when the gap between the first mesh layer 11 and the second mesh layer 21 is larger than 12.5mm, the filtering effect cannot be achieved. In addition, the coaming 6 surrounds the periphery of the mesh layer, the thickness range of the coaming 6 is 0.1mm-2.5mm, when the thickness of the coaming 6 is less than 0.1mm, the coaming 6 cannot achieve a better strength improvement effect, and when the thickness of the coaming 6 is greater than 2.5mm, too much unnecessary material is consumed.

The mesh 4 is solid, so that hollow pore channels are not formed after sintering, and the supporting strength can be further improved. The diameter of the mesh 4 ranges from 0.2mm to 3.2mm, when the diameter of the mesh 4 is smaller than 0.2mm, the strength of the mesh 4 is too low and is easy to burn out, and when the diameter of the mesh 4 is larger than 3.2mm, the mesh 3 becomes small and the filtration flux is reduced. The cross-sectional shape of the 3D printed ceramic foam is rectangular or circular, and the cross-section of the 3D printed ceramic foam may be defined and fixed by the coaming 6.

The foregoing is a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model and are intended to be comprehended within the scope of the present utility model.

Claims

1. The 3D printing foam ceramic is characterized by comprising a plurality of net layers, wherein a plurality of grids with consistent shapes are arranged on the net layers, the grids are uniformly distributed in the net layers, the grids are surrounded by a plurality of net wires, the net layers are longitudinally distributed, the distances between adjacent net layers are consistent, and the net layers are divided into an odd-numbered sequence net layer and an even-numbered sequence net layer from top to bottom;

the support beams are respectively connected between the odd-numbered sequence net layers and between the even-numbered sequence net layers;

the coaming is vertically connected to the edges of the plurality of net layers, and can enclose and close the edges of the net layers;

the odd-numbered sequence net layers comprise a plurality of first net layers, the even-numbered sequence net layers comprise a plurality of second net layers, the first net layers and the second net layers are adjacently arranged, the first net layers are arranged above the second net layers, a first grid and a second grid are respectively arranged on the first net layers and the second net layers, and the first grid and the second grid are staggered;

the projection of the first grid center point falls at the edge intersection of the second grid.

2. The 3D printed ceramic foam of claim 1, wherein the first and second grids are uniform in shape and size, the first and second grids are rectangular in shape, a common point of adjacent 4 first grids is a first intersection point, and a common point of adjacent 4 second grids is a second intersection point.

3. The 3D printed ceramic foam of claim 2, further comprising a connection beam, wherein a gap is provided between the first mesh layer and the second mesh layer, one end of the connection beam is connected to an edge intersection of the first mesh, and the other end is connected to the second intersection.

4. The 3D printed ceramic foam of claim 2, wherein the first intersection points of each of the odd-numbered sequence of web layers are interconnected by the support beams and the second intersection points of each of the even-numbered sequence of web layers are interconnected by the support beams.

5. The 3D printed ceramic foam of claim 1, wherein a gap distance between the first and second mesh layers is in the range of 0.5mm-12.5mm.

6. The 3D printed ceramic foam of claim 1, wherein the thickness of the shroud ranges from 0.1mm to 2.5mm.

7. The 3D printed ceramic foam according to claim 1, wherein the mesh is solid, the mesh having a diameter in the range of 0.2mm-3.2mm.

8. The 3D printed ceramic foam of claim 1, wherein the cross-sectional shape of the 3D printed ceramic foam is rectangular or circular.