CN217669980U - Large-size special ceramic sphere isostatic pressing forming device - Google Patents
Large-size special ceramic sphere isostatic pressing forming device Download PDFInfo
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- CN217669980U CN217669980U CN202221881785.4U CN202221881785U CN217669980U CN 217669980 U CN217669980 U CN 217669980U CN 202221881785 U CN202221881785 U CN 202221881785U CN 217669980 U CN217669980 U CN 217669980U
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Abstract
The utility model relates to a jumbo size special ceramic spheroid isostatic compaction device, the silica gel die sleeve among the device is used for filling ceramic powder, two hemisphere mould shells are used for the cover in the silica gel die sleeve outside, the mode through isostatic pressing applys the high pressure to it, the static pressure hole on the hemisphere mould shell can be sheathe the silica gel mould of inside distribution of pressure is even in, ceramic powder in the silica gel die sleeve can even atress, form the ceramic ball that the homogeneity is good, there can not be great internal stress inside the ceramic ball body of this kind of shaping mode processing, ceramic ball blank is difficult for the fracture at follow-up sintering process, the disability rate is low, the device has greatly reduced jumbo size ceramic ball's the processing degree of difficulty, machining efficiency is high and can material saving cost.
Description
Technical Field
The utility model relates to a ceramic ball isostatic compaction field especially relates to a jumbo size special ceramic spheroid isostatic compaction device.
Background
The development of alumina ceramics exceeds half a century, and because the alumina ceramics has excellent mechanical property, electrical property and chemical stability, wide raw material sources and low manufacturing cost, the alumina ceramics is a basic material for manufacturing high-performance ceramic parts with high strength, wear resistance, high temperature resistance and the like, and is widely applied to the fields of machinery, communication, semiconductors, medicines, food, petroleum, chemical industry, aerospace and the like.
The large-scale alumina ceramic ball has obtained specific application in the case of sphere seal, heavy-calibre ball valve, disc ball mill, to the ceramic ball that the diameter exceeds 200mm, traditional technology cuts out ceramic ball in ceramic unburned bricks bar, and this kind of mode processing degree of difficulty is big, wastes time and material, and the ceramic ball can have very big internal stress after taking off from the bar simultaneously, and the spheroid is very easy to split in subsequent sintering process, leads to the disability rate to be high or low.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a jumbo size special ceramic spheroid isostatic compaction device.
The technical scheme of the utility model is that: a large-size special ceramic sphere isostatic pressing forming device comprises a hemispherical formwork A, a hemispherical formwork B and a balloon-shaped silica gel die sleeve; a feeding hole is formed in the silica gel mold sleeve; the end opening of the hemispherical formwork A and the end opening of the hemispherical casing B are provided with a butt joint mechanism, the hemispherical formwork A and the hemispherical formwork B are connected into a whole through the butt joint mechanism, the casings of the hemispherical formwork A and the hemispherical formwork B are uniformly distributed with a plurality of static pressure holes which are circular holes, the silica gel mold sleeve is matched and arranged between the circular formwork A and the hemispherical formwork B, and the feed inlet of the silica gel mold sleeve extends out of the joint between the hemispherical formwork A and the hemispherical formwork B.
Preferably, docking mechanism include the ring flange first that hemisphere mould shell first port department set up along the circumferencial direction, the ring flange second that hemisphere mould shell second port department set up along the circumferencial direction, realize two hemisphere mould shell dockings through ring flange first and ring flange second, also can realize the butt joint through the hasp.
Preferably, the inner end face of the flange plate A is uniformly provided with a plurality of connecting columns, the inner end face of the flange plate B is uniformly provided with a plurality of round holes, and the connecting columns are inserted into the round holes to form tight fit.
Preferably, the feed inlet on the silica gel die sleeve is set to be a bell mouth-shaped feed inlet.
Preferably, the thickness of the silica gel mold sleeve is 3mm, and the thickness of the shell of the hemispherical mold shell A and the shell of the hemispherical mold shell B are both 8mm.
The utility model has the beneficial technical effects that:
(1) The silica gel die sleeve in the device is used for filling ceramic powder, the two hemispherical die shells are used for being sleeved outside the silica gel die sleeve, high pressure is applied to the silica gel die sleeve in an isostatic pressing mode, static pressure holes in the hemispherical die shells can evenly distribute the pressure to the silica gel die sleeve inside, the ceramic powder in the silica gel die sleeve can be evenly stressed to form ceramic balls with good evenness, large internal stress cannot exist inside ceramic ball blanks processed in the forming mode, the ceramic ball blanks are not prone to cracking in the subsequent sintering process, the rejection rate is low, the device greatly reduces the processing difficulty of large-size ceramic balls, the processing efficiency is high, and the material cost can be saved.
(2) Through the ring flange butt joint between the hemisphere mould shell among the device, spliced pole sliding connection on the ring flange of one side is in the round hole of opposite side ring flange, consequently forms the sliding connection relation between two hemisphere mould shells, receives to form the trend of relative slip between two hemisphere mould shells after the pressure, can continuously be in the fastening state to can be convenient open two hemisphere mould shells after the pressurization is accomplished, easy operation and efficient.
Drawings
FIG. 1 is a schematic view showing the state of expansion between the components of the present invention;
FIG. 2 is a schematic structural view of the assembled state of the components of the present invention;
FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 2;
in the figure, 11 parts of a hemispherical mould shell A, 12 parts of a hemispherical mould shell B, 13 parts of a silica gel mould sleeve, 131 parts of a feed inlet, 14 parts of a static pressure hole, 15 parts of a flange A, 151 parts of a connecting column, 16 parts of a flange B, 161 parts of a round hole, 17 parts of a square hole and 18 parts of ceramic powder.
Detailed Description
In the first embodiment, referring to the attached figures 1-3 of the specification, a large-size special ceramic sphere isostatic pressing forming device comprises a hemispherical formwork A, a hemispherical formwork B and a balloon-shaped silica gel die sleeve, wherein the hemispherical formwork A and the hemispherical formwork B are both steel shells;
a feeding hole is arranged on the silica gel die sleeve, and ceramic powder is filled into the silica gel die sleeve from the feeding hole; the end opening of the hemispherical shell A and the end opening of the hemispherical shell B are provided with a butt joint mechanism, the hemispherical shell A and the hemispherical shell B are connected into a whole through the butt joint mechanism, the hemispherical shell A and the hemispherical shell B form a spherical shell, a plurality of static pressure holes are densely distributed on the shells of the hemispherical shell A and the hemispherical shell B, the silica gel mold sleeve is matched and arranged between the spherical shell A and the hemispherical shell B, pressure is uniformly applied to the silica gel mold sleeve through the static pressure holes, and a feed inlet of the silica gel mold sleeve extends out of a joint between the hemispherical shell A and the hemispherical shell B.
The butt joint mechanism comprises a flange plate A arranged at the port of the hemispherical formwork A along the circumferential direction, and a flange plate B arranged at the port of the hemispherical formwork B along the circumferential direction, wherein a plurality of connecting columns are uniformly distributed on the inner end face of the flange plate A, a plurality of round holes are uniformly distributed on the inner end face of the flange plate B, the connecting columns are inserted into the round holes and form tight fit, the connecting columns and the round holes which are tightly matched can play a centering effect, the hemispherical formwork A and the hemispherical formwork B can form a spherical shape after being butted, and the two hemispherical formworks can keep a fastening state in a pressurizing process in a high-pressure cavity.
The inner side surface of the flange plate A is provided with a groove A along the radial direction, the inner side surface of the flange plate B is provided with a groove B corresponding to the groove A along the radial direction, a feed inlet of the silica gel die sleeve extends out of a square hole formed by the groove A and the groove B, and a concave pit is formed on the surface of the ceramic ball blank after the feed inlet is arranged in the hemispherical die shell and pressurized, so that the feed inlet is led out of the hemispherical die shell by arranging the groove.
The feed inlet on the silica gel die sleeve is arranged to be a horn mouth-shaped feed inlet convenient for charging.
The thickness of the silica gel mold sleeve is 3mm, and the thickness of the shell of the hemispherical mold shell A and the shell of the hemispherical mold shell B are both 8mm.
The utility model discloses a use is:
the first step, the silica gel mold sleeve is placed in the hemispherical mold shell A, then ceramic powder is filled into the silica gel mold sleeve from the feeding hole, the feeding hole is tightly sealed by a rubber band or a binding rope, and the hemispherical mold shell B is butted with the hemispherical mold shell A through a flange plate after the silica gel mold sleeve is filled with the ceramic powder, so that a circular mold is formed.
And secondly, placing the forming device filled with the ceramic powder into a suspension cage, lifting the forming device into a high-pressure cavity after the forming device is washed clean, sequentially pressurizing, maintaining pressure and releasing pressure, wherein the pressure is set to be 150MPa, and lifting the suspension cage out of the high-pressure cavity and washing the suspension cage clean after the pressure release is finished.
And thirdly, removing the hemispherical mould shell B or the hemispherical mould shell A, turning down the silica gel mould sleeve from the extruded ceramic ball blank, removing the ceramic ball blank, and flattening the uneven part on the ceramic ball blank at the feed inlet.
Claims (5)
1. A kind of jumbo size special ceramic spheroid isostatic compaction device, its characteristic is:
comprises a hemispherical mould shell A, a hemispherical mould shell B and a balloon-shaped silica gel mould sleeve; a feeding hole is formed in the silica gel mold sleeve; the end opening of the hemispherical shell A and the end opening of the hemispherical shell B are provided with a butt joint mechanism, the hemispherical shell A and the hemispherical shell B are connected into a whole through the butt joint mechanism, the shells of the hemispherical shell A and the hemispherical shell B are uniformly distributed with a plurality of static pressure holes, the silica gel mold sleeve is matched and arranged between the circular shell A and the hemispherical shell B, and the feed inlet of the silica gel mold sleeve extends out of the joint between the hemispherical shell A and the hemispherical shell B.
2. The large-size special ceramic sphere isostatic compaction device according to claim 1, wherein: the butt joint mechanism comprises a flange plate A arranged at the port of the hemispherical formwork A along the circumferential direction and a flange plate B arranged at the port of the hemispherical formwork B along the circumferential direction.
3. The large-size special ceramic sphere isostatic compaction device according to claim 2, wherein: the inner end face of the flange plate A is uniformly provided with a plurality of connecting columns, the inner end face of the flange plate B is uniformly provided with a plurality of round holes, and the connecting columns are inserted into the round holes to form tight fit.
4. The large-size special ceramic sphere isostatic compaction device according to claim 1, wherein: and a feed inlet on the silica gel die sleeve is arranged to be a horn-mouth-shaped feed inlet.
5. The large-size special ceramic sphere isostatic compaction device according to claim 1, wherein: the thickness of silica gel die sleeve is 3mm, and the shell thickness of hemisphere mould shell A and hemisphere mould shell B is 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221881785.4U CN217669980U (en) | 2022-07-21 | 2022-07-21 | Large-size special ceramic sphere isostatic pressing forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221881785.4U CN217669980U (en) | 2022-07-21 | 2022-07-21 | Large-size special ceramic sphere isostatic pressing forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217669980U true CN217669980U (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221881785.4U Active CN217669980U (en) | 2022-07-21 | 2022-07-21 | Large-size special ceramic sphere isostatic pressing forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217669980U (en) |
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2022
- 2022-07-21 CN CN202221881785.4U patent/CN217669980U/en active Active
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