CN110076882A - A kind of isostatic cool pressing composable mold and production method producing small micro- Ceramic Balls green body - Google Patents
A kind of isostatic cool pressing composable mold and production method producing small micro- Ceramic Balls green body Download PDFInfo
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- CN110076882A CN110076882A CN201910358092.3A CN201910358092A CN110076882A CN 110076882 A CN110076882 A CN 110076882A CN 201910358092 A CN201910358092 A CN 201910358092A CN 110076882 A CN110076882 A CN 110076882A
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- latex
- top board
- green body
- template
- cover plate
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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
- B28B3/003—Pressing by means acting upon the material via flexible mould wall parts, e.g. by means of inflatable cores, isostatic presses
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
A kind of isostatic cool pressing composable mold and production method producing small micro- Ceramic Balls green body, mold mainly include metal top board, rubber upper cover plate, template in latex, mould, metal lower cover plate in latex.Production method steps following (1) are granulated；(2) dry-pressing；(3) subsequent processings such as cold isostatic compaction (4) HIP sintering: after sintering, ripe base preliminary working, the finishing of rolling element, smooth grinding, polishing, product inspection.The invention can ensure that in the molding procedure of product product consistency, improve production efficiency.
Description
Technical field
The present invention relates to a kind of small micro- Ceramic Balls green body isostatic cool pressing composable mold of production and methods.
Background technique
Existing isostatic cool pressing technology is at normal temperature, to do thin wall wrap model material using rubber or plastics, is pressure with liquid
Power media is formed for powder body material, in order to which further gas pressure sintering or hot isostatic pressing process provide green body, shaping work pressure
For 420MPa.Cold isostatic compaction is that ceramic powders to be pressed are placed in pressure-resistant rubber mold, incompressible using liquid medium
Property with uniformly transfer the property of pressure uniform pressurization carried out to powder by the surface of mold from all directions, when liquid is situated between
When matter passes through pressure pump injection pressure container, according to fluid mechanics principle, pressure size is constant and is delivered evenly to each
Direction.The pressure that the powder in rubber high-pressure bottle receives in all directions at this time is uniform and size consistent.
After pressure release, mold is taken out from container, after demoulding, green body is done into further Shape correction as needed.As one
Kind moulding process, compared with conventional molding techniques, the extrudate density of isostatic pressing is high, and the even density of green body is consistent and compares
Unidirectional and high 15 times of two-way compression molding or so, the even density degree of green body is high.
Shortcoming existing for current existing Ceramic Balls green body isostatic cool pressing technology is: (1) rolling body formed rank in ceramics
In section production, ceramic powder is packed into the mode of single sphere mold by hand, is not only easy in this way by conventionally employed list ball rubber mold
Raw material is polluted, inefficiency, Density Distribution is uneven, and the size of green body is difficult to control after sintering.(2) de- after isostatic cool pressing
In mold process, due to be easy to causeing ball interior defect during hand ejection, it will appear the quality such as cracking, implosion after sintering and lack
It falls into, influences the yield rate of sphere, the case where inefficiency is especially prominent in small micro- Ceramic Balls molding procedure.
Summary of the invention
The object of the present invention is to provide the consistency of product in a kind of molding procedure of certifiable product, improve production efficiency
The small micro- Ceramic Balls green body isostatic cool pressing composable mold of production and method.
Producing small micro- Ceramic Balls green body isostatic cool pressing composable mold mainly includes metal top board, rubber upper cover plate, latex
Mould, metal lower cover plate, fastening screw component in middle template, latex.
Wherein, metal lower cover plate and metal top board are circular ring shape plate, in the case where metal lower cover plate top is equipped with latex
Pressing plate is equipped with latex top board in metal top board lower part.Mould in latex is equipped between latex top board and latex lower platen
Plate, is equipped with several through-holes in latex in template, the aperture ratio ceramic blank bulb diameter of through-hole is big.In metal lower cover plate, metal
Several fastening screw holes, the position in fastening screw hole are equipped in top board, latex lower platen, latex top board and latex in template
It sets corresponding.Template passes through fastening screw in metal lower cover plate, metal top board, latex lower platen, latex top board and latex
It is connected.
Further, the big a quarter of aperture ratio ceramic blank bulb diameter of the through-hole in latex in template.
Further, in metal lower cover plate, metal top board, latex lower platen, latex top board and latex template it is outer
Diameter is identical, and cylinder diameter in respectively less than cold equal machines.
Further, multiple molds can stack installation simultaneously, and cold equal machines installation is convenient, efficient.
The step of using small micro- Ceramic Balls green body isostatic cool pressing composable mold production Si_3 N_4 Ceramic Roller, is as follows:
(1) powder is granulated: the ceramic powder mist projection granulating after mixed accessories is passed through control by super-fine processing powder
The bulk density of powder is reached 0.7-0.78 grams/cc, adds zinc stearate auxiliary material, powder can be improved after granulation by distribution
The mobility of body；
(2) dry-pressing: using automatic dry chemical press device, and powder is preforming in dry pressing die set, after dry-pressing, green body
Density will reach 1.2 grams/cc -1.5 grams/cc；
(3) hydrostatic profile: small micro- Ceramic Balls green body isostatic cool pressing composable mold is used, ceramic blank ball is put into latex
In the through-hole of template, after isostatic pressing, ceramic blank ball refers to that density reaches 1.7 grams/cc -2.1 grams/cubes lis
Rice.
(4) subsequent processings such as sintering: after sintering, ripe base preliminary working, the finishing of rolling element, smooth grinding, polishing.
Compared with prior art, the present invention have the advantage that the consistency of product in the molding procedure of certifiable product,
Improve production efficiency.
Detailed description of the invention
Fig. 1 is overhead sectional view of the invention
Fig. 2 is the main view of part of the invention；
Fig. 3 is the stereoscopic schematic diagram of metal lower cover plate of the invention；
Fig. 4 is the stereoscopic schematic diagram of metal top board of the invention；
Fig. 5 is the stereoscopic schematic diagram of latex lower platen of the invention；
Fig. 6 is the stereoscopic schematic diagram of latex top board of the invention；
Fig. 7 is the stereoscopic schematic diagram of template in latex of the invention；
In figure, 1- metal lower cover plate, 2- metal top board, 3- fastening screw hole, template, 5- ceramic blank in 4- latex
Ball, 6- latex top board, 7- latex lower platen.
Specific embodiment
In Fig. 1 into simplified schematic diagram of the invention shown in Fig. 7, small micro- Ceramic Balls green body isostatic cool pressing composable mold is produced
Mainly including template in metal lower cover plate, metal top board, latex lower platen, latex top board and latex.Metal lower cover plate, gold
Category top board, latex lower platen, latex top board are identical with the outer diameter of template in latex, and cylinder diameter in respectively less than cold equal machines.Gold
Subordinate's cover board 1 and metal top board 2 are circular ring shape plate.It is equipped with latex lower platen 7 on metal lower cover plate top, on metal
Pressing plate lower part is equipped with latex top board 6.Template 4 in latex is equipped between latex top board and latex lower platen, in latex
Template is equipped with through-hole, the 5 big a quarter of diameter of aperture ratio ceramic blank ball of the through-hole in latex in template.In metal lower cover
Fastening screw hole 3, fastening screw hole are equipped in plate, metal top board, latex lower platen, latex top board and latex in template
Position it is corresponding.Template passes through fastening in metal lower cover plate, metal top board, latex lower platen, latex top board and latex
Screw is connected.
The step of using small micro- Ceramic Balls green body isostatic cool pressing composable mold production Si_3 N_4 Ceramic Roller, is as follows:
(1) be granulated: the ceramic powder mist projection granulating after mixed accessories is distributed by super-fine processing powder by control,
The bulk density of powder is reached 0.7 gram/cc, zinc stearate auxiliary material is added, the mobility of powder can be improved after granulation；
(2) dry-pressing: using automatic dry chemical press device, and powder is preforming in dry pressing die set, after dry-pressing, green body
Density will reach 1.2 grams/cc；
(3) hydrostatic profile: small micro- Ceramic Balls green body isostatic cool pressing composable mold is used, ceramic blank ball is put into latex
In the through-hole of mould, after isostatic pressing, ceramic blank ball refers to that density reaches 1.7 grams/cc；
(4) subsequent processings such as sintering: after sintering, ripe base preliminary working, the finishing of rolling element, smooth grinding, polishing.
Claims (4)
1. a kind of isostatic cool pressing composable mold for producing small micro- Ceramic Balls green body, mainly include metal top board, rubber upper cover plate,
Template in latex, mould, metal lower cover plate in latex, it is characterised in that: metal lower cover plate and metal top board are that circular ring shape is flat
Plate, is equipped with latex lower platen on metal lower cover plate top, latex top board is equipped in metal top board lower part, in latex top board
It is equipped with template in latex between latex lower platen, is equipped with through-hole, the aperture ratio ceramic blank ball of through-hole in template in latex
Diameter is big, is equipped with fastening in template in metal lower cover plate, metal top board, latex lower platen, latex top board and latex
Screw hole, and the position in fastening screw hole is corresponding, metal lower cover plate, metal top board, latex lower platen, latex top board and
Template is connected by fastening screw in latex.
2. a kind of isostatic cool pressing composable mold for producing small micro- Ceramic Balls green body according to claim 1, it is characterised in that:
The big a quarter of aperture ratio ceramic blank bulb diameter of through-hole in latex in template.
3. a kind of isostatic cool pressing composable mold for producing small micro- Ceramic Balls green body according to claim 1, it is characterised in that:
Metal lower cover plate, metal top board, latex lower platen, latex top board are identical with the outer diameter of template in latex, and respectively less than cold
Cylinder diameter in equal machines.
4. the isostatic cool pressing composable mold that application produces small micro- silicon nitride ceramic ball green body produces small micro- Ceramic Balls green body method,
It is characterized in that:
(1) be granulated: the ceramic powder mist projection granulating after mixed accessories is distributed by super-fine processing powder by control, by powder
The bulk density of body reaches 0.7-0.78 grams/cc, adds zinc stearate auxiliary material, the flowing of powder can be improved after granulation
Property；
(2) dry-pressing: using automatic dry chemical press device, and powder is preforming in dry pressing die set, after dry-pressing, the density of green body
Reach 1.2 grams/cc -1.5 grams/cc；
(3) hydrostatic profile: small micro- Ceramic Balls green body isostatic cool pressing composable mold is used, ceramic blank ball is put into template in latex
Through-hole in, after isostatic pressing, ceramic blank ball refers to that density reaches 1.7 grams/cc -2.1 grams/cc；
(4) subsequent processings such as sintering: after sintering, ripe base preliminary working, the finishing of rolling element, essence are flooded, polished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910358092.3A CN110076882A (en) | 2019-04-30 | 2019-04-30 | A kind of isostatic cool pressing composable mold and production method producing small micro- Ceramic Balls green body |
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|---|---|---|---|
| CN201910358092.3A CN110076882A (en) | 2019-04-30 | 2019-04-30 | A kind of isostatic cool pressing composable mold and production method producing small micro- Ceramic Balls green body |
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| CN110076882A true CN110076882A (en) | 2019-08-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300599A (en) * | 2020-03-30 | 2020-06-19 | 苏州汉尼威电子技术有限公司 | Processing technology of ultramicro nano section for preparing cutter |
| CN111409174A (en) * | 2020-03-30 | 2020-07-14 | 苏州汉尼威电子技术有限公司 | Manufacturing process of ultramicro nano water jet sand pipe |
| CN115677356A (en) * | 2022-10-20 | 2023-02-03 | 基迈克材料科技（苏州）有限公司 | Preparation method of high-performance silicon nitride ceramic substrate |
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| CN101125755A (en) * | 2006-08-15 | 2008-02-20 | 上海材料研究所 | Method for preparing large scale ceramic ball |
| CN101306944A (en) * | 2008-06-24 | 2008-11-19 | 中国铝业股份有限公司 | Green alumina ceramic and method for preparing same |
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| CN111300599A (en) * | 2020-03-30 | 2020-06-19 | 苏州汉尼威电子技术有限公司 | Processing technology of ultramicro nano section for preparing cutter |
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| CN115677356A (en) * | 2022-10-20 | 2023-02-03 | 基迈克材料科技（苏州）有限公司 | Preparation method of high-performance silicon nitride ceramic substrate |
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