CN113967961A - Ceramic slip casting method and mould thereof - Google Patents

Ceramic slip casting method and mould thereof Download PDF

Info

Publication number
CN113967961A
CN113967961A CN202111366150.0A CN202111366150A CN113967961A CN 113967961 A CN113967961 A CN 113967961A CN 202111366150 A CN202111366150 A CN 202111366150A CN 113967961 A CN113967961 A CN 113967961A
Authority
CN
China
Prior art keywords
grouting
elastic material
material layer
mold
blank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111366150.0A
Other languages
Chinese (zh)
Inventor
余宜璠
陈立航
贺邦杰
肖金
杨佐东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Zhenbao Industrial Co ltd
Original Assignee
Chongqing Zhenbao Industrial Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Zhenbao Industrial Co ltd filed Critical Chongqing Zhenbao Industrial Co ltd
Priority to CN202111366150.0A priority Critical patent/CN113967961A/en
Publication of CN113967961A publication Critical patent/CN113967961A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B28B1/265—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor pressure being applied on the slip in the filled mould or on the moulded article in the mould, e.g. pneumatically, by compressing slip in a closed mould
    • 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
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B28B1/261—Moulds therefor
    • 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
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B28B1/261—Moulds therefor
    • B28B1/262—Mould materials; Manufacture of moulds or parts thereof
    • B28B1/263—Plastics
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0002—Auxiliary parts or elements of the mould
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/348—Moulds, cores, or mandrels of special material, e.g. destructible materials of plastic material or rubber
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
    • B28B7/46—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for humidifying or dehumidifying

Abstract

The invention relates to a ceramic slip casting method and a ceramic slip casting mold, and belongs to the technical field of material forming. According to the invention, an elastic material layer and a filter membrane layer are sequentially laid on the inner surface of the porous panel, after the mold is closed, pressurized grouting is carried out in the mold through a grouting opening, pressure maintaining is carried out, after the pressure maintaining is finished, a grouting valve is closed, and drying, demolding and sintering are carried out. The elastic material layer in the mould is pressed to generate elastic deformation in the pressurizing grouting and pressure maintaining processes, the elastic material layer rebounds after the pressure is removed, inward compression force is uniformly provided for the grouting blank, the grouting blank is uniformly distributed, the density is uniform, and the blank is prevented from being layered or cracked. The elastic material can retain a part of water in the drying process, the surface and the center of the blank are in a humidity balance state in the drying process, and the stress cracking phenomenon caused by different surface and inside humidity of the blank is reduced.

Description

Ceramic slip casting method and mould thereof
Technical Field
The invention belongs to the technical field of material forming, and relates to a ceramic slip casting method and a ceramic slip casting mold.
Background
The plate ceramic can be formed in various ways, including die-casting, cold isostatic pressing, tape casting and slip casting. The die-casting and cold isostatic pressing are high in cost, and a large-scale field is needed for accommodating corresponding forming equipment; the tape casting needs to add a large amount of organic solvent, and the use of the organic solvent is easy to cause environmental pollution. The slip casting is divided into gypsum mold forming and pressure slip casting forming, wherein the gypsum mold forming is a traditional forming mode which is easy to cause a hollowing phenomenon in the process of manufacturing a solid product; the existing pressure grouting molding has the problems that the pressure is difficult to control, the finished product is easy to crack due to uneven pressure distribution and the like.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method for slip casting of ceramics.
The invention also aims to provide a ceramic slip casting mould.
In order to achieve the purpose, the invention provides the following technical scheme:
a ceramic slip casting method comprises the steps of die assembly, slip casting, demolding and sintering, wherein an elastic material layer and a filtering membrane layer are sequentially laid on the inner surface of a porous panel to obtain a slip casting die, after die assembly, pressure grouting is carried out in the die through a grouting opening, pressure maintaining is carried out, after pressure maintaining is finished, a slip casting valve is closed, drying is carried out, demolding is carried out to obtain an initial blank, and sintering is carried out.
Preferably, the elastic material layer has a 25% compressive stress of 30 to 55 kPa.
Preferably, the elastic material layer is made of an EVA (ethylene vinyl acetate) foaming material or a plastic-rubber composite material, and the thickness of the elastic material layer is 4-12 mm.
Preferably, the material of the filtering membrane layer is polyether sulfone, polypropylene or polytetrafluoroethylene, and the pore diameter is 0.2-1.5 μm.
Preferably, the pressurized grouting specifically comprises: grouting is carried out under 0.1-0.5 MPa.
Preferably, the dwell time is 4 to 12 hours.
Preferably, the sintering is specifically: the primary blank is placed to constant weight and then sintered at 1650-1700 ℃.
The utility model provides a pottery slip casting mould, the mould includes porous panel, elastic material layer and filtration rete the elastic material layer and filtration rete have been laid in proper order to porous panel internal surface the slip casting mouth has been seted up on the mould, the supporting slip casting valve that is provided with of slip casting mouth.
Preferably, the elastic material layer has a 25% compressive stress of 30 to 55 kPa.
Preferably, the material of the filtering membrane layer is polyether sulfone, polypropylene or polytetrafluoroethylene, and the pore diameter is 0.2-1.5 μm.
The invention has the beneficial effects that:
according to the invention, the elastic material layer and the filtering film layer are sequentially laid on the inner surface of the porous panel, pressurized grouting is carried out in the mold through the grouting port after mold assembly is carried out, in the pressurized grouting process, due to the blocking effect of the filtering film layer, the main grouting body is remained in the mold cavity to obtain a grouting blank, and water in the grouting is discharged out of the mold through the filtering film layer, the elastic material layer and the porous panel. The elastic material layer in the mould is pressed to generate elastic deformation in the pressurizing grouting and pressure maintaining processes, and the porous panel plays a supporting role in the process to prevent the whole mould from generating large deformation. The elastic material layer rebounds after pressure is removed, the rebounded elastic material layer uniformly provides inward compression force for the grouting blank body, the grouting blank body is uniformly distributed, the density is uniform, and then the grouting blank body is prevented from layering or cracking. The density of the grouting blank body can be controlled according to different stress generated by elastic deformation of different materials or different thicknesses of the elastic material layer. In the drying process, the elastic material layer can retain a part of water, so that the surface of the grouting blank and the center of the blank are in a humidity balance state in the drying process, and the phenomenon of stress cracking caused by different surface and inside humidity is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 shows a ceramic slip casting mold.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
As shown in fig. 1, the ceramic slip casting mold comprises a porous panel, an elastic material layer and a filtering membrane layer, wherein the elastic material layer and the filtering membrane layer are sequentially paved on the inner surface of the porous panel, a slip casting port is formed in the mold, a slip casting valve is arranged on the slip casting port in a matched mode, and holes in the porous panel can be used as water outlets in the slip casting process. In the examples, the ceramic slip casting was carried out in a mold having the structure shown in FIG. 1.
Example 1
Laying an EVA foaming material layer with the thickness of 4mm and a polytetrafluoroethylene filter membrane layer with the aperture size of 1.2 mu m on the inner surface of a porous panel in sequence, wherein the 25% compressive stress of the EVA foaming material layer is 45-55kPa, injecting alumina ceramic slurry into a mold at the pressure of 0.1MPa through a slurry injection port after mold closing, maintaining the pressure for 4h at the pressure of 0.1MPa after pressurized slurry injection is finished, closing a slurry injection valve after pressure maintaining is finished, drying for 8 days at normal temperature and normal pressure, demolding to obtain an initial blank, placing the initial blank to constant weight, and sintering at 1650 ℃.
Example 2
Laying an EVA foaming material layer with the thickness of 12mm and a polypropylene filter membrane layer with the aperture size of 0.5 mu m on the inner surface of the porous panel in sequence, wherein the 25% compressive stress of the EVA foaming material layer is 45-55kPa, injecting alumina ceramic slurry into a mold at the pressure of 0.5MPa through a slurry injection port after mold closing, maintaining the pressure for 12h at the pressure of 0.5MPa after pressurized slurry injection is finished, closing a slurry injection valve after pressure maintaining is finished, drying for 3 days at normal temperature and normal pressure, demolding to obtain an initial blank, placing the initial blank to constant weight, and sintering at 1650 ℃.
Example 3
Laying a plastic-rubber composite material layer with the thickness of 8mm and a polyether sulfone filter membrane layer with the aperture size of 0.8 mu m on the inner surface of the porous panel in sequence, wherein the 25% compressive stress of the plastic-rubber composite material layer is 30-50kPa, injecting alumina ceramic slurry into a mold through a slurry injection port at the pressure of 0.1MPa after mold closing, maintaining the pressure for 4h at the pressure of 0.1MPa after pressure injection is finished, closing a slurry injection valve after pressure maintaining is finished, drying for 8 days at normal temperature and normal pressure, demolding to obtain an initial blank, placing the initial blank to constant weight, and sintering at 1650 ℃.
Example 4
Laying a plastic-rubber composite material layer with the thickness of 8mm and a polyether sulfone filter membrane layer with the aperture size of 0.3 mu m on the inner surface of the porous panel in sequence, wherein the 25% compressive stress of the plastic-rubber composite material layer is 30-50kPa, injecting alumina ceramic slurry into a mold through a slurry injection port at the pressure of 0.1MPa after mold closing, maintaining the pressure for 8h at the pressure of 0.1MPa after pressure injection is finished, closing a slurry injection valve after pressure maintaining is finished, drying for 8 days at normal temperature and normal pressure, demolding to obtain an initial blank, placing the initial blank to constant weight, and sintering at 1700 ℃.
Comparative example
Laying a polytetrafluoroethylene filter membrane layer with the aperture size of 1.5 mu m on the inner surface of the porous panel, injecting alumina ceramic slurry into a mold through a grouting port under the pressure of 0.1MPa after closing the mold, maintaining the pressure for 4h under the pressure of 0.1MPa after the pressure grouting is finished, closing a grouting valve after the pressure maintaining is finished, drying for 8 days at normal temperature and normal pressure, demolding to obtain a primary blank, placing the primary blank to constant weight, and sintering at 1650 ℃.
Comparative test
Measuring the density of the primary blank: the blanks of example 1, example 3 and comparative example were taken, pieces of material, designated A, B, C, D and E, were cut at five different areas of the blank, the pieces were ground into standard cubes, weighed and the dimensions were measured and the density of each piece was calculated (density unit: g/cm)3). The specific measurement results are shown in the following table:
group of A B C D E Ave.
Comparative example 2.326 2.187 2.228 2.143 2.240 2.22
Example 1 2.570 2.539 2.542 2.533 2.556 2.55
Example 3 2.326 2.267 2.314 2.250 2.322 2.30
And (3) measuring the density of the sintered product: the sintered products of examples 1, 3 and comparative examples were taken, cut pieces were ground flat in five different areas of the product, designated A, B, C, D and E, respectively, and the density of each piece was measured using Archimedes Density measurement (density unit: g/cm)3). The specific measurement results are shown in the following table:
group of A B C D E Ave.
Comparison group 3.9328 3.9215 3.9248 3.9189 3.9265 3.92
Example 1 3.9687 3.9625 3.9632 3.9611 3.9643 3.96
Example 3 3.9487 3.9415 3.9458 3.9406 3.9469 3.94
The statistical data in the table show that the density ratio of the primary blank and the sintered product prepared by the method is higher than the proportional density, and the density of the grouting product can be effectively controlled by the elastic material. In the primary blank density measurement experiment and the sintered product density measurement experiment, the observation shows that the section of the cutting material block prepared by the method is smooth, and the section has no hollowness, which indicates that the primary blank and the sintered product prepared by the method have uniform density; the observation shows that the surfaces of the primary blank and the sintered product prepared by the method are flat and have no cracks, and the effect of the elastic material layer on the surface moisture retention of the grouting blank can effectively reduce the stress cracking phenomenon caused by different surface and internal humidity in the drying process of the primary blank.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims (10)

1. The ceramic slip casting method comprises the steps of die assembly, slip casting, demoulding and sintering, and is characterized in that: and sequentially paving an elastic material layer and a filtering membrane layer on the inner surface of the porous panel to obtain a grouting forming mold, pressurizing and grouting the mold through a grouting opening after mold closing and maintaining pressure, closing a grouting valve after pressure maintaining is finished, drying, demolding to obtain an initial blank, and sintering.
2. The molding method according to claim 1, wherein: the elastic material layer has a 25% compressive stress of 30-55 kPa.
3. The molding method according to claim 2, wherein: the elastic material layer is made of EVA (ethylene vinyl acetate) foaming material or plastic-rubber composite material, and the thickness of the elastic material layer is 4-12 mm.
4. The molding method according to claim 1, wherein: the material of the filter membrane layer is polyether sulfone, polypropylene or polytetrafluoroethylene, and the aperture is 0.2-1.5 mu m.
5. The molding method according to claim 1, wherein: the pressurized grouting specifically comprises the following steps: grouting is carried out under 0.1-0.5 MPa.
6. The molding method according to claim 1, wherein: the dwell time is 4-12 h.
7. The molding method according to claim 1, wherein: the sintering specifically comprises the following steps: the primary blank is placed to constant weight and then sintered at 1650-1700 ℃.
8. The utility model provides a pottery slip casting mould which characterized in that: the mould comprises a porous panel, an elastic material layer and a filter membrane layer, wherein the elastic material layer and the filter membrane layer are sequentially laid on the inner surface of the porous panel, a grouting opening is formed in the mould, and a grouting valve is arranged on the grouting opening in a matched mode.
9. The mold of claim 8, wherein: the elastic material layer has a 25% compressive stress of 30-55 kPa.
10. The mold of claim 8, wherein: the material of the filter membrane layer is polyether sulfone, polypropylene or polytetrafluoroethylene, and the aperture is 0.2-1.5 mu m.
CN202111366150.0A 2021-11-18 2021-11-18 Ceramic slip casting method and mould thereof Pending CN113967961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111366150.0A CN113967961A (en) 2021-11-18 2021-11-18 Ceramic slip casting method and mould thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111366150.0A CN113967961A (en) 2021-11-18 2021-11-18 Ceramic slip casting method and mould thereof

Publications (1)

Publication Number Publication Date
CN113967961A true CN113967961A (en) 2022-01-25

Family

ID=79589896

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111366150.0A Pending CN113967961A (en) 2021-11-18 2021-11-18 Ceramic slip casting method and mould thereof

Country Status (1)

Country Link
CN (1) CN113967961A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114643634A (en) * 2022-03-22 2022-06-21 重庆臻宝实业有限公司 Slip casting's vacuum mold
CN115122462A (en) * 2022-06-23 2022-09-30 重庆臻宝实业有限公司 Ceramic vibration grouting forming device and method
CN115534055A (en) * 2022-11-28 2022-12-30 山东硅元新型材料股份有限公司 Gel injection molding mold and process for preparing aluminum oxide double-hole guide rail green body

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999157A (en) * 1989-06-22 1991-03-12 Nkk Corporation Method for molding powders
JPH05285921A (en) * 1992-04-08 1993-11-02 Inax Corp Slip casting mold
CN2642483Y (en) * 2003-06-12 2004-09-22 刘建平 Double layer composite film for dynamic pulp formation
CN101288969A (en) * 2008-05-30 2008-10-22 郭俊平 Ceramic pressure casting and forming method and used mould
CN102380909A (en) * 2010-08-31 2012-03-21 王志伟 Vertical type pouring manufacturing method of decorative gypsum board
CN102528899A (en) * 2011-12-27 2012-07-04 咸阳陶瓷研究设计院 Production process for preparing silica ceramic crucible by use of pressure grouting method
CN106363775A (en) * 2016-08-29 2017-02-01 虔东稀土集团股份有限公司 Ceramic body forming method and device thereof
CN211967872U (en) * 2019-12-23 2020-11-20 杭州大和江东新材料科技有限公司 Isostatic compaction mould of ceramic product

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999157A (en) * 1989-06-22 1991-03-12 Nkk Corporation Method for molding powders
JPH05285921A (en) * 1992-04-08 1993-11-02 Inax Corp Slip casting mold
CN2642483Y (en) * 2003-06-12 2004-09-22 刘建平 Double layer composite film for dynamic pulp formation
CN101288969A (en) * 2008-05-30 2008-10-22 郭俊平 Ceramic pressure casting and forming method and used mould
CN102380909A (en) * 2010-08-31 2012-03-21 王志伟 Vertical type pouring manufacturing method of decorative gypsum board
CN102528899A (en) * 2011-12-27 2012-07-04 咸阳陶瓷研究设计院 Production process for preparing silica ceramic crucible by use of pressure grouting method
CN106363775A (en) * 2016-08-29 2017-02-01 虔东稀土集团股份有限公司 Ceramic body forming method and device thereof
CN211967872U (en) * 2019-12-23 2020-11-20 杭州大和江东新材料科技有限公司 Isostatic compaction mould of ceramic product

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114643634A (en) * 2022-03-22 2022-06-21 重庆臻宝实业有限公司 Slip casting's vacuum mold
CN114643634B (en) * 2022-03-22 2022-11-29 重庆臻宝实业有限公司 Slip casting's vacuum mold
CN115122462A (en) * 2022-06-23 2022-09-30 重庆臻宝实业有限公司 Ceramic vibration grouting forming device and method
CN115122462B (en) * 2022-06-23 2023-09-05 重庆臻宝科技股份有限公司 Ceramic vibration grouting forming device and method
CN115534055A (en) * 2022-11-28 2022-12-30 山东硅元新型材料股份有限公司 Gel injection molding mold and process for preparing aluminum oxide double-hole guide rail green body

Similar Documents

Publication Publication Date Title
CN113967961A (en) Ceramic slip casting method and mould thereof
CN101322919B (en) Method for preparing micropore ceramic separation film
CN106596223B (en) Preparation method of rock core for dense conglomerate oil displacement
CN105777133B (en) The preparation method and particular manufacturing craft of the whole shellproof plate of the more curved surfaces of disposal molding
CN102528899A (en) Production process for preparing silica ceramic crucible by use of pressure grouting method
CN103933872B (en) Method for preparing multichannel asymmetric stainless steel film
CN113290884B (en) Composite material plate shell with thickness gradient region and forming device and method thereof
CN102975376A (en) Split die vacuum bag-autoclave forming method of irregular composite material
CN109176828B (en) Gel injection molding method for large-size planar ceramic blank capable of preventing warping deformation
CN101049722B (en) Device for testing condition for forming pore bugs in hyperpressure forming process, and method for eliminating pores
CN204844461U (en) Pressure slip casting mould of tubulose pottery target
CN101655089B (en) Ceramic rotor of energy recovery pump and preparation method thereof
CN102528898B (en) High pressure grouting forming process for ceramic billet
CN109079963A (en) A kind of manufacturing method of single side pressure mold and ITO flat target
CN109896777B (en) Preparation method of epoxy resin concrete for roads
CN108319760B (en) Prediction model and prediction method for plastic deformation of graded broken stone base
CN115847863A (en) Method for accurately manufacturing pores of composite laminated board
CN108859071B (en) Combined die and method for preparing solid buoyancy material by applying same
CN102371615A (en) Method for forming biscuit for ceramics with directionally-enhanced anti-impact structure
CN204718854U (en) A kind of mould suppressing artificial rock core sample
CN108640674A (en) A kind of method of constant temperature and humidity rapid draing ITO target green body
CN1226534A (en) Ceramic thick membrane assembling process
CN111037710A (en) Forming method of sagger for lithium battery positive electrode material
CN101774215A (en) Fine porous ceramic used as ceramic mold and molding technique
CN115534055A (en) Gel injection molding mold and process for preparing aluminum oxide double-hole guide rail green body

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20220125

RJ01 Rejection of invention patent application after publication