CN104227823A - Molding method for multilayer structure ceramic product - Google Patents
Molding method for multilayer structure ceramic product Download PDFInfo
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- CN104227823A CN104227823A CN201410462919.2A CN201410462919A CN104227823A CN 104227823 A CN104227823 A CN 104227823A CN 201410462919 A CN201410462919 A CN 201410462919A CN 104227823 A CN104227823 A CN 104227823A
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- ceramic product
- ceramic
- green compact
- sandwich construction
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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
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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
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/025—Hot pressing, e.g. of ceramic materials
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The invention provides a molding method for a multilayer structure ceramic product. The molding method comprises the following steps: burdening: providing ceramic slurry; tape casting: performing tape casting on the ceramic slurry to form a green body sheet; blanking: blanking the green body sheet to obtain a plurality of flaky green bodies; hot press molding: providing a hot press die, overlaying the flaky green bodies on a female die according to a predetermined sequence, and assembling a male die to obtain a molded green body; demolding: taking the molded green body out of the hot press die; sintering: performing degreasing sintering on the green body which is taken out to obtain the ceramic product. By adopting the molding method for the multilayer structure ceramic product provided by the invention, the ceramic product having a multilayer structure in the thickness direction can be made on the premise of ensuring that the general thickness range of the ceramic product with very small thickness is 0.05-0.3 millimeter; moreover, the production cost and process difficulty are lowered greatly, the production efficiency is increased, and industrial large-scale production of the ceramic product is realized.
Description
Technical field
The present invention relates to ceramic product field, particularly relate to a kind of forming method of sandwich construction ceramic product.
Background technology
Structural ceramics due to there is higher hardness and on antenna without features such as impacts, in an increasingly wide range of applications in electronic devices and components.The day by day integrated and ultrathin of consumer electronics requires that ceramic part must have complicated shape and very thin thickness.
The forming method of existing ceramic product mainly comprises two kinds, i.e. flow casting molding and ceramic injection forming.Flow casting molding is that ceramic powders and organic matter are mixed and made into the slip with certain viscosity by suitable proportioning, slip to be scraped with certain thickness by scraper and is coated in special base band, the film becoming green tape is peeled from above after drying, solidification, then need to carry out the processing such as lamination process to green compact according to the size and dimension of finished product, then carry out degreasing and sintering obtains pottery; Ceramic injection forming obtains feeding by ceramic powders and organic matter being mixed with, and obtains green compact by injection molding method, and then degreasing sinteredly obtain pottery.The method of aft-loaded airfoil is the method by presintering or the ceramic body that sinters to be obtained final required form by the method for machining.
In above-mentioned two kinds of forming methods, flow casting molding method is applicable to the ceramic material preparing large area, Boping, but more complicated shape or step cannot be possessed at thickness direction, and injection molding method can make complicated shape but cannot reach the thickness of very thin (0.05 ?0.3mm), and adopt injection molding method, make that manufacturing cost is high, efficiency is low, the demand of mass can not be met.
Summary of the invention
Therefore, the invention provides a kind of forming method of sandwich construction ceramic product, it is taking into account the ceramic product that cannot make complicated shape under the very thin prerequisite of ceramic product thickness in order to the forming method solving existing ceramic product, cannot realize the technical problem of mass production simultaneously.
In order to solve the problem, the invention provides a kind of forming method of sandwich construction ceramic product, this forming method comprises the steps: batching: provide ceramic size; Flow casting molding: above-mentioned ceramic size is formed green sheet according to predetermined thickness curtain coating on casting machine; Stamping-out: carry out stamping-out to above-mentioned green sheet, obtains the sheet green compact that polylith is separate; Hot-forming: provide the hot pressing die that has former and an anode membrane, be stacked and placed on former by above-mentioned polylith sheet green compact according to predesigned order, close formpiston, in predetermined temperature and a predetermined pressure of pressurizeing in the scheduled time, obtains shaping sandwich construction shape green compact; The demoulding: above-mentioned shaping sandwich construction shape green compact are taken out in hot pressing die; Sintering: carry out degreasing sintered to the above-mentioned sandwich construction shape green compact be removed, obtain required sandwich construction ceramic product.
Preferably, in flow casting molding step, the thickness of this green sheet is 0.05-0.3mm.
Preferably, in hot-forming step, the scope of described predetermined pressure is 2-10Mpa, and predetermined temperature range is 25-60 DEG C, the scheduled time be 1 ?10min.
Compared to correlation technique, the forming method of sandwich construction ceramic product provided by the invention can ensure under the prerequisite that ceramic product thickness is very thin, general thickness scope be 0.05 ?0.3mm, preparation has the ceramic product of sandwich construction in a thickness direction, and this forming method greatly reduces production cost and technology difficulty, improve production efficiency, realize the industrialized mass of ceramic product.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the schematic diagram in one embodiment of the invention before hot pressing die matched moulds.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides the forming method that the invention provides a kind of multi-layer ceramics product, this forming method comprises the steps:
Step S1, batching: ceramic size is provided.This ceramic size makes according to the method for existing routine, and it forms by the structural ceramics powder of oven dry and solvent, dispersant, bonding agent and plasticizer etc. being configured according to certain ratio and charging sequence.
Step S2, flow casting molding: above-mentioned ceramic size is formed green sheet according to predetermined thickness curtain coating on casting machine.The thickness of this green sheet is generally 0.05-0.3mm.
Step S3, stamping-out: carry out stamping-out to above-mentioned green sheet, obtains the sheet green compact that polylith is separate.
Step S4, hot-forming: as shown in Figure 1, the hot pressing die that one has former 11 and an anode membrane 10 is provided, above-mentioned polylith sheet green compact 12 are stacked and placed on former 11 according to predesigned order, close formpiston 10, in predetermined temperature and a predetermined pressure of pressurizeing in the scheduled time, obtain shaping sandwich construction shape green compact, these polylith sheet green compact 12 are made up of the green compact of multi-disc sheet, such as when for two panels, can comprise the first green compact 12a and the second green compact 12b, described first green compact 12a and the second green compact 12b is shaped to sandwich construction shape green compact.The scope of described predetermined pressure is 2-10Mpa, and predetermined temperature range is 25-60 DEG C, and the scheduled time is 1-10min.Because the ductility of green compact has limited field, therefore, the deformation quantity that choose reasonable bending stretches when Design of Dies, deformation quantity is excessive, such as deformation quantity is greater than more than the twice of green compact thickness, break when then easily causing green compact shaping, residual stress also can cause strain cracking in degreasing sintered process.
Step S5, the demoulding: above-mentioned shaping sandwich construction shape green compact are taken out in hot pressing die.
Step S6, sintering: carry out degreasing sintered to the above-mentioned sandwich construction shape green compact be removed, obtain required sandwich construction ceramic product.
Compared to correlation technique, the forming method of ceramic product provided by the invention can ensure under the prerequisite that ceramic product thickness is very thin, general thickness scope be 0.05 ?0.3mm, preparation has the ceramic product of sandwich construction shape in a thickness direction, and this forming method greatly reduces production cost and technology difficulty, improve production efficiency, realize the industrialized mass of ceramic product.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a forming method for sandwich construction ceramic product, is characterized in that, this forming method comprises the steps:
Batching: ceramic size is provided;
Flow casting molding: above-mentioned ceramic size is formed green sheet according to predetermined thickness curtain coating on casting machine;
Stamping-out: carry out stamping-out to above-mentioned green sheet, obtains the sheet green compact that polylith is separate;
Hot-forming: provide the hot pressing die that has former and an anode membrane, be stacked and placed on former by above-mentioned polylith sheet green compact according to predesigned order, close formpiston, in predetermined temperature and a predetermined pressure of pressurizeing in the scheduled time, obtains shaping sandwich construction shape green compact;
The demoulding: above-mentioned shaping sandwich construction shape green compact are taken out in hot pressing die;
Sintering: carry out degreasing sintered to the above-mentioned sandwich construction shape green compact be removed, obtain required sandwich construction ceramic product.
2. the forming method of ceramic product according to claim 1, is characterized in that, in flow casting molding step, the thickness of this green sheet is 0.05-0.3mm.
3. the forming method of pottery product according to claim 1, it is characterized in that, in hot-forming step, the scope of described predetermined pressure is 2-10Mpa, and predetermined temperature range is 25-60 DEG C, and the scheduled time is 1-10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410462919.2A CN104227823A (en) | 2014-09-11 | 2014-09-11 | Molding method for multilayer structure ceramic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410462919.2A CN104227823A (en) | 2014-09-11 | 2014-09-11 | Molding method for multilayer structure ceramic product |
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| Publication Number | Publication Date |
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| CN104227823A true CN104227823A (en) | 2014-12-24 |
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| CN201410462919.2A Pending CN104227823A (en) | 2014-09-11 | 2014-09-11 | Molding method for multilayer structure ceramic product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053790A (en) * | 2017-04-07 | 2017-08-18 | 北京小米移动软件有限公司 | Electronic equipment, ceramic component and preparation method thereof |
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2014
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| JP2000264741A (en) * | 1999-03-16 | 2000-09-26 | Japan Science & Technology Corp | Silicon carbide-base ceramic composite material and its product |
| CN101391896A (en) * | 2008-10-10 | 2009-03-25 | 华中科技大学 | Quick-speed manufacturing method of complicated ceramic |
| CN101844925A (en) * | 2010-05-21 | 2010-09-29 | 李艳 | Process for preparing multilayer ZrB2-SiC complex phase ultrahigh temperature ceramic wafer material by tape casting |
| CN101863154A (en) * | 2010-06-17 | 2010-10-20 | 天津大学 | Multilayer gradient Ba1-xSrxTiO3 (BST) dielectric ceramic material and preparation method |
| CN102173829A (en) * | 2010-12-30 | 2011-09-07 | 山东理工大学 | Preparation method of zirconium boride-silicon carbide/graphite layered superhigh temperature ceramic |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053790A (en) * | 2017-04-07 | 2017-08-18 | 北京小米移动软件有限公司 | Electronic equipment, ceramic component and preparation method thereof |
| CN107053790B (en) * | 2017-04-07 | 2019-09-27 | 北京小米移动软件有限公司 | Electronic equipment, ceramic component and preparation method thereof |
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Application publication date: 20141224 |