CN206550347U - A kind of ceramic powders cold isostatic compaction mould - Google Patents
A kind of ceramic powders cold isostatic compaction mould Download PDFInfo
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- CN206550347U CN206550347U CN201621296055.2U CN201621296055U CN206550347U CN 206550347 U CN206550347 U CN 206550347U CN 201621296055 U CN201621296055 U CN 201621296055U CN 206550347 U CN206550347 U CN 206550347U
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- clamping plate
- ceramic powders
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- cold isostatic
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Abstract
A kind of ceramic powders cold isostatic compaction mould, belongs to powder metallurgical technology, and the mould includes hard clamping plate, dress powder latex jacket, polyurethane sealing plug, fastening bolt and nut and locating ring.The hard clamping plate is connected by fastening bolt and nut, and locating ring is enclosed on the bolt between two pieces of relative hard clamping plates, the basic size of hard clamping plate and locating ring cooperation to determine dress powder chamber；Double faced adhesive tape or colloid is scribbled on the inside of two pieces of hard clamping plates to be close to latex jacket to be fixed on hard clamping plate.Ceramic powders to be pressed are packed into the dress powder chamber in latex jacket, the polyurethane sealing plug of certain compression performance is reloaded into, afterwards again sealed latex jacket mouthful with clamping device, in isostatic pressing machine straight forming.The utility model is simple in construction, reasonable in design, and it is larger to solve conventional isostatic pressing blank shape dimensional discrepancy, in uneven thickness, the low shortcoming of yield rate, realizes that planar dimension is big, the precise forming of thickness of thin base substrate.
Description
Technical field
The utility model belongs to powder metallurgical technology, and in particular to a kind of direct cold isostatic compaction mould of ceramic powders
Tool.
Background technology
Isostatic pressing is an important process in ceramic powders shaping, and the shaping of ceramic powders is generally divided into cold forming
Shaping, chill is molded to add isostatic cool pressing density, direct cold isostatic compaction.The process of isostatic pressing includes：1. initial stage into
When type pressure is smaller, powder granule migration and weight accumulative phase；2. metaphase pressure is improved, powder local flow and fragmentation stage；
3. later stage is maximum, powder volume compression discharges stomata, reaches densification stage.Compared with other molding modes, wait quiet
The pressure of liquid medium transmission is in all directions etc. equal when molded the characteristics of is shaping.Elastic mould is by liquid
The frictional force of powder of the displacement transfer produced during body pressure medium into mould, powder and mold wall is small, base substrate uniform force,
Density Distribution is homogeneous to avoid unidirectional or bidirection press during molding from suppressing, and the frictional force of powder and mould is larger, pressure edge compacting side
To the pressure loss can be produced, make the Density inhomogeneity of base substrate each several part and properties of product is improved a lot.
The handicraft of isostatic pressing has uniform texture, and density is high, and sintering shrinkage is small, and die cost is low,
Production efficiency is high, and plastic complex-shaped, elongated article and the outstanding advantages such as large scale product and precise measure product, are current
A kind of more advanced moulding process, starts to substitute traditional forming method with its unique advantage, the spark plug of such as Production of Ceramics,
The products such as porcelain ball, plunger, vacuum envelope, show more and more wide application prospect.
Used in a kind of cold isostatic compaction mould of CN203917913U Introduction To Cn Patents, this method by the steel of combination
Mould is fitted into gum cover, combined steel formation dress powder cavity, and overall be positioned in equal pressing equipment is pressed after powder is filling sealed
Type is made.But the mould punching block is positioned in jacket inconvenient powder and loaded, powder is overall too heavy after loading, it has not been convenient to carry,
Compressing process is due to dress powder chamber forced contraction, and punching block, which easily cuts jacket, causes fluid under pressure to enter polluted product in jacket,
And the idiosome edge thickness after compacting does not shrink that idiosome occur in uneven thickness in punching block stress.Different sized products need difference
Punching block, in-convenience in use, poor universality.
Using combination appearance circle in a kind of cold isostatic compaction mould of CN202490933U Introduction To Cn Patents, this method
Column, internal combination squarely dress powder chamber, overall be positioned in equal pressing equipment is pressed after powder is filling sealed.But
The punching block is positioned in jacket inconvenient powder and loaded, and powder is overall too heavy after loading, it has not been convenient to carry, compressing process by
In dress powder chamber forced contraction, punching block easily cut jacket cause fluid under pressure enter jacket in polluted product, compacting idiosome for cube
Body thickness is thicker can not to realize the big thickness of thin idiosome shaping of size, and cylindrical mold fills powder chamber and fixed without convenient.Different sized products
Different punching blocks are needed, thicker product can only be suppressed, the thin idiosome of large scale can not be used.
A kind of tungsten powder cold isostatic compaction square dies of CN202180204U Introduction To Cn Patents, this method uses hinge
The U-shaped clamping dress powder cavity for determining square upper end open rubber sleeve composition of chain fishplate composition, it is overall after powder is filling sealed to place
It is pressed in equal pressing equipment.But the mould hinge chain fishplate constitutes U-shaped fixture, and U-shaped chucking opening end is used
Chain tape splicing is fixed, and the deformation of U-shaped fixture is easily caused during the reinforcing fastening of chain tape splicing, causes rubber bag to be set with powder Wall deformation, cold etc. quiet
Molded rear idiosome is in ladder.Allowance is added to standard square body product.
Cold isostatic compaction mould technology disclosed above different degrees of presence molding blank geomery deviation compared with
Greatly, surface quality is poor, in uneven thickness, and post-production surplus is big, poor universality, the low shortcoming of yield rate.
The content of the invention
The purpose of this utility model be for existing cold isostatic compaction mould weak point there is provided a kind of structure letter
It is single, reasonable in design, uniform-compression, the ceramic powders cold isostatic compaction mould of precise forming.
To achieve the above object, the technical solution of the utility model is：A kind of ceramic powders cold isostatic compaction mould, should
Mould includes hard clamping plate, dress powder latex jacket, polyurethane sealing plug, fastening bolt and nut and locating ring.The hard folder
Plate is connected by fastening bolt and nut, and locating ring is enclosed on the bolt between two pieces of relative hard clamping plates, hard
Clamping plate and locating ring coordinate the basic size to determine dress powder chamber；Double faced adhesive tape is scribbled on the inside of two pieces of hard clamping plates by latex bag
Set is close to be fixed on hard clamping plate.Ceramic powders to be pressed are packed into the dress powder chamber in latex jacket, with there is certain compression
The polyurethane sealing plug sealing of performance, afterwards again seals latex jacket mouthful with clamping device, in isostatic pressing machine straight forming.
The utility model has the advantages that：
This is simple using new structure, reasonable in design and easy to use, solves conventional isostatic pressing blank shape, chi
Very little deviation is larger, and surface quality is poor, in uneven thickness, and post-production surplus is big, and the low shortcoming of yield rate realizes planar dimension
Greatly, the precise forming of thickness of thin base substrate.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is the utility model hard clamping plate schematic diagram；
Fig. 3 is the utility model Fig. 1 A-A cutaway cross-sectional views.
In figure：1- hard clamping plate, 2- dress powder latexes jacket, 3- fastening bolts, 4- nuts, 5- locating rings, 6- polyurethane sealings
Mouth plug, 7- hard clamping plates liquid drain hole, 8- fastening bolt holes, 9- dress powder chamber.
Embodiment
Embodiment of the present utility model is illustrated referring to accompanying drawing.
As shown in Figure 1, Figure 2, Figure 3 shows：A kind of ceramic powders cold isostatic compaction mould, the mould includes hard clamping plate 1, dress
Powder latex jacket 2, polyurethane sealing plug 6, fastening bolt 3 and nut 4 and locating ring 5.The hard clamping plate 1 passes through fastening bolt
3 and nut 4 be connected, locating ring 5 is enclosed on the bolt 3 between two pieces of relative hard clamping plates, hard clamping plate 1 and positioning
Ring 5 coordinates the basic size for determining to fill powder chamber 9；The inner side of two pieces of hard clamping plates 1, which scribbles double faced adhesive tape, will fill powder latex jacket 2
It is close to be fixed on hard clamping plate 1.Ceramic powders to be pressed are packed into the dress powder chamber 9 in powder latex jacket 2, it is certain with having
The polyurethane sealing plug 6 of compression performance is sealed, and afterwards again seals latex jacket mouthful with clamping device, isostatic pressing machine directly into
Type.The material of the hard clamping plate 1 is PVC board.The thickness of polyurethane sealing plug 6 is identical with the height of locating ring 5.Described is hard
The thickness of matter clamping plate 1 is that certain size and the liquid drain hole 7 of density is distributed with 5-20mm, and face.Liquid drain hole on hard clamping plate 1
Size be the mm of 5-ф of ф 15, density is 50-200/m2.Described dress powder latex jacket 2 is with certain elastic ripe
Rubber, and thickness is 3-5mm.
It is of the present utility model specific to make, using step be：
1st, by hard clamping plate L (mm) × W (mm) × H (mm), wherein L, W by base substrate size, density, hydrostatic pressure and
Powder property determine, H determine hard PVC clamping plate intensity, generally 8-15mm, in inner side L subtract 50-100 (mm) ×
The scope that W subtracts 50-100 (mm) sticks two-sided tape or glue, by size be L subtract 50-100 (mm) × W subtract 50-
The two sides of 100 (mm) × 3-5 (mm) latex jackets is pasted on hard clamping plate respectively, afterwards with fastening bolt and nut hard
The corner of matter clamping plate is integrally fastened mould by locating ring；The wherein positional distance edges of boards edge of hard clamping plate fastening bolt holes
10-30mm, positioning ring diameter can be enclosed in fastening bolt, and the height h of locating ring determines the high low dimensional of dress powder chamber；So
Just a volume is formd to subtract 50-100 (mm) × W for L and subtract the dress powder chamber that 50-100 (mm) × h subtract 6-10 (mm).
2nd, the mould fastened is put on shaking platform, the powder to be installed handled well in advance is uniformly loaded into dress powder
The dress powder intracavitary of latex jacket, then the polyurethane sealing thicker than latex jacket opening size big 1-3mm, h is stoppered into dress powder chamber
The top of powder, and closely contacted with powder, the upper port of latex jacket is finally sealed with clamping device.
3rd, using isostatic pressing machine straight forming, pressure is 100-300MPa, 5-60min of pressurize, pressure process latex bag
Set forced contraction come off automatically from hard clamping plate double faced adhesive tape, be integrally limited to hard PVC clamping plate constitute space in stress into
Type.
4th, base substrate, observation billet surface and overall condition are taken out at latex jacket opening, is calculated according to weight, volumetric method
The density of base substrate.
It is described in further details with reference to embodiment：
Embodiment 1：
Suppress 98%ZnO:2%Al2O3, size is 320mm × 320mm × 15mm ceramic powders base substrates.
1st, by hard clamping plate, its size is 480mm × 480mm × 30mm, and in inner side, 400mm × 400mm scope is sticked
Two-sided tape, the two sides that size is the latex jacket of 400mm × 400mm × 3 is pasted above respectively, afterwards with fastening bolt and
Nut is integrally fastened mould by locating ring in the corner of hard clamping plate.
2nd, the mould fastened is put on shaking platform, the ZnO/ Al2O3 powder handled well in advance is uniformly loaded
To the dress powder intracavitary of dress powder latex jacket, 30 × 400 × 50mm polyurethane sealing is being stoppered to the top of dress powder chamber powder,
And closely contacted with powder, the upper end of latex jacket is finally sealed with clamping device.
3rd, using isostatic pressing machine straight forming, pressure is 200MPa, pressurize 30min.
4th, taking-up base substrate, billet surface flat smooth, without defects such as arrisdefects, jacket is integrally intact, according to weight, volume
The density that method calculates base substrate is 3.4, and solid density is 61%.
Embodiment 2：
Suppress 90%In2O3:10%SnO, size is 340mm × 340mm × 18mm ceramic powders base substrates.
1st, by hard clamping plate, its size is 480mm × 480mm × 30mm, and in inner side, 400mm × 400mm scope is sticked
Two-sided tape, the two sides that size is the latex jacket of 400mm × 400mm × 3 is pasted above respectively, afterwards with fastening bolt and
Nut is integrally fastened mould by locating ring in the corner of hard clamping plate.
2nd, the mould fastened is put on shaking platform, the In2O3/SnO powder handled well in advance is uniformly loaded
To the dress powder intracavitary of dress powder latex jacket, 30 × 400 × 50mm polyurethane sealing is being stoppered to the top of dress powder chamber powder,
And closely contacted with powder, the upper end of latex jacket is finally sealed with clamping device.
3rd, using isostatic pressing machine straight forming, pressure is 250MPa, pressurize 30min.
4th, taking-up base substrate, billet surface flat smooth, without defects such as arrisdefects, jacket is integrally intact, according to weight, volume
The density that method calculates base substrate is 4.65, and solid density is 65%.
Claims (8)
1. a kind of ceramic powders cold isostatic compaction mould, it is characterised in that the mould includes hard clamping plate（1）, latex jacket
（2）, polyurethane sealing plug（6）, fastening bolt (3) and nut (4) and locating ring (5), the hard clamping plate（1）By fastening spiral shell
Bolt（3）And nut（4）To be connected, locating ring（5）It is enclosed on the bolt between two pieces of relative hard clamping plates（3）On, hard
Clamping plate（1）And locating ring（5）Coordinate to determine to fill powder chamber（9）Basic size；Two pieces of hard clamping plates（1）Inner side scribble it is double
Face glue is by latex jacket（2）It is close to be fixed on hard clamping plate（1）On.
2. a kind of ceramic powders cold isostatic compaction mould according to claim 1, it is characterised in that described hard folder
Plate（1）Thickness for certain size and the liquid drain hole of density is distributed with 5-20mm, and face（7）.
3. a kind of ceramic powders cold isostatic compaction mould according to claim 1, it is characterised in that described locating ring
（5）Hard PVC clamping plate is clipped on bolt（1）Between, locating ring（5）Size height determine dress powder chamber thickness.
4. a kind of ceramic powders cold isostatic compaction mould according to claim 1, it is characterised in that described latex bag
Set（2）For with certain elastic vulcanized rubber, and thickness is 3-5mm.
5. a kind of ceramic powders cold isostatic compaction mould according to claim 1 or 4, it is characterised in that latex jacket
（2）Interior dress powder chamber（9）The middle polyurethane sealing plug for having certain compression performance loaded for sealing（6）, its thickness is with positioning
Ring（5）Height it is identical.
6. a kind of ceramic powders cold isostatic compaction mould according to claim 1 or 2, it is characterised in that described hard
Clamping plate（1）Material be PVC board.
7. a kind of ceramic powders cold isostatic compaction mould according to claim 1, it is characterised in that hard clamping plate（1）'s
Planar dimension determines that length and width size is specially that base substrate size length and width respectively add 50-100mm according to the base substrate size being molded.
8. a kind of ceramic powders cold isostatic compaction mould according to claim 1, it is characterised in that hard clamping plate（1）On
The size of liquid drain hole be the mm of 5-ф of ф 15, density is 50-200/m2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621296055.2U CN206550347U (en) | 2016-11-30 | 2016-11-30 | A kind of ceramic powders cold isostatic compaction mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621296055.2U CN206550347U (en) | 2016-11-30 | 2016-11-30 | A kind of ceramic powders cold isostatic compaction mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206550347U true CN206550347U (en) | 2017-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621296055.2U Active CN206550347U (en) | 2016-11-30 | 2016-11-30 | A kind of ceramic powders cold isostatic compaction mould |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814337A (en) * | 2019-12-10 | 2020-02-21 | 横店集团东磁股份有限公司 | Simple low-cost cold isostatic pressing die and implementation method thereof |
| CN113171210A (en) * | 2021-04-20 | 2021-07-27 | 江苏泰州麦迪医疗科技有限公司 | Manufacturing method and forming tool for ceramic sliding groove prosthesis |
| CN115106526A (en) * | 2022-06-27 | 2022-09-27 | 金堆城钼业股份有限公司 | Cold isostatic pressing precision forming device and method for molybdenum material plate blank |
| CN115502398A (en) * | 2022-10-27 | 2022-12-23 | 株洲硬质合金集团有限公司 | Production method of hard alloy super-long thin plate |
| 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 |
-
2016
- 2016-11-30 CN CN201621296055.2U patent/CN206550347U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814337A (en) * | 2019-12-10 | 2020-02-21 | 横店集团东磁股份有限公司 | Simple low-cost cold isostatic pressing die and implementation method thereof |
| CN113171210A (en) * | 2021-04-20 | 2021-07-27 | 江苏泰州麦迪医疗科技有限公司 | Manufacturing method and forming tool for ceramic sliding groove prosthesis |
| CN115106526A (en) * | 2022-06-27 | 2022-09-27 | 金堆城钼业股份有限公司 | Cold isostatic pressing precision forming device and method for molybdenum material plate blank |
| 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 |
| CN115502398A (en) * | 2022-10-27 | 2022-12-23 | 株洲硬质合金集团有限公司 | Production method of hard alloy super-long thin plate |
| CN115502398B (en) * | 2022-10-27 | 2024-03-12 | 株洲硬质合金集团有限公司 | Production method of hard alloy ultra-long thin plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 753000 119 metallurgical Road, Shizuishan, the Ningxia Hui Autonomous Region Patentee after: Northwest rare metal materials research institute Ningxia Co., Ltd. Address before: 753000 119 metallurgical Road, Shizuishan, the Ningxia Hui Autonomous Region Patentee before: Xibei Inst. of Rare Metal Material |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180803 Address after: 753000 No. 119 metallurgical Road, Dawukou District, Shizuishan, the Ningxia Hui Autonomous Region Patentee after: Ningxia medium color new materials Co., Ltd. Address before: 753000 119 metallurgical Road, Shizuishan, the Ningxia Hui Autonomous Region Patentee before: Northwest rare metal materials research institute Ningxia Co., Ltd. |
|
| TR01 | Transfer of patent right |