CN102862221A - Inner core of isostatic pressing die for ceramic nozzle with single nozzle - Google Patents
Inner core of isostatic pressing die for ceramic nozzle with single nozzle Download PDFInfo
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- CN102862221A CN102862221A CN2012104010431A CN201210401043A CN102862221A CN 102862221 A CN102862221 A CN 102862221A CN 2012104010431 A CN2012104010431 A CN 2012104010431A CN 201210401043 A CN201210401043 A CN 201210401043A CN 102862221 A CN102862221 A CN 102862221A
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- bolt
- cone
- frustum
- inner core
- isostatic pressing
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Abstract
The invention provides an inner core of an isostatic pressing die for a ceramic nozzle with a single nozzle. The inner core comprises a long conical rod, a conical table and a bolt for connecting the conical rod and the conical table. Apart from a bolt hole communicated in the middle and connected with the conical rod on the conical table, the conical table is further provided with an un-communicated auxiliary hole with a certain depth to facilitate the screwing and unscrewing of the bolt. According to the inner core, a plurality of parts of a set of pressing die for the ceramic nozzle are firmly combined through the bolt, and the problem of blank cracking at a prior joint position caused by loose combining is solved. Simultaneously, as a bolt connection unit which is convenient to dismount is used, on one hand, the die is separated from a blank, stress damages during demoulding are reduced, and the product performance is improved; and one the other hand, the labor intensity is decreased, and the production efficiency is improved.
Description
Technical field
The present invention relates to a kind of isostatic pressing method and prepare a single spraying ceramic nozzle mold core, belong to the Inorganic Non-metallic Materials moulding and make the field.
Background technology
Ceramic nozzle has important application in fields such as large coal-fired boiler flue gas desulfurization denitration dust-removing, papermaking, weaving, pharmacy, metallurgy, is the novel environment friendly product that country widelys popularize.High-quality ceramic nozzle should have the characteristics such as high strength, high temperature resistant, corrosion-resistant, long service life, and this forming method and shaping jig to ceramic nozzle proposes very high requirement.
The forming method of ceramic nozzle commonly used mainly is injection forming at present, the slip-casting shaping process process is complicated, manufacturing cycle is long, and interiors of products exists composition and density gradient difference, especially the inwall density of nozzle is low, causes intensity and lower hardness, wears no resistance, so that greatly shorten the service life of ceramic nozzle, can not give full play to the inherent advantage that ceramic material prepares nozzle.
Isostatic compaction is a kind of briquetting process that utilizes the liquid medium transmission of pressure, the distortion that elastic mould produces when being subject to medium pressure liquid is delivered to the powder in the mould, because the active force on all directions equates, thereby base substrate is stressed evenly, the Density Distribution homogeneous can improve the performance that makes product greatly.For conveniently stripped, at present mostly ceramic nozzle isostatic pressing mold commonly used is to connect segmented each other with slot, although be convenient to throw off, but exists the problem that joining place is easy to ftracture, and greatly reduces the yield rate of product.
Summary of the invention
In order to solve the deficiencies in the prior art, the invention provides a kind of new ceramics nozzle isostatic pressing mold inner core.
Technical scheme of the present invention is as follows:
A kind of single spraying ceramic nozzle isostatic pressing mold inner core comprises long conical rod, the frustum of a cone, bolt; Described bolt links together long conical rod and the frustum of a cone, the upper disc of long conical rod fit together with the upper disc of the frustum of a cone and both diameters consistent.
The preferred hexagon socket head cap screw of described bolt, the diameter of thread M minimum of bolt is not less than 3mm, and maximum is no more than 0.6 times of disc diameter D3 on the long conical rod; Bolt length is at least 1.1 times of frustum of a cone height, and can not be less than 15mm.
There is the threaded cylindrical bolt of not having of up/down perforation hole described frustum of a cone center, and the physical dimension of bolt hole is determined with reference to used bolt; An internal thread hole is arranged at described long conical rod top, and its geometric parameter is determined with reference to used bolt; Bolt hole on the frustum of a cone is connected with internal thread hole on the long conical rod.
The diameter of the unthreaded portion of described bolt in the frustum of a cone is D1, is slightly larger than diameter of thread M, and the nut diameter of bolt is D2, presses the plain bolt standard.
The described frustum of a cone also has the via hole of a non-perforation, and the cross sectional shape of via hole is a kind of in triangle, square, the hexagon, makes things convenient for bolt to screw and outwards winding.
The preferred regular hexagon of the cross sectional shape of the via hole on the described frustum of a cone is conveniently to select general inner hexagon spanner; The parallel edges distance L 1 of via hole is close with the nut diameter D2 of bolt, and the centre-to-centre spacing L2 between the nut of via hole and bolt satisfies: L2〉1/2 (L1+D2)+3, (unit is mm); The hole depth of via hole is 15mm.
Ceramic nozzle isostatic pressing mold inner core of the present invention is processed by hard material, preferred hard metal material;
Preferably, a kind of single spraying ceramic nozzle isostatic pressing mold inner core, the dimensional parameters of each several part is:
1) the lower disc diameter D5 of long conical rod 1 is 10 ~ 150mm, and upper disc diameter D3 is 5 ~ 100mm, and length L 3 is 30 ~ 1000mm;
2) the upper disc diameter D3 of the frustum of a cone 2 is 5 ~ 100mm, and is consistent with disc diameter on the conical rod 1, and lower disc diameter D4 is 10 ~ 500mm.
After above-mentioned mould connection is complete, be coated with the last layer releasing agent at inner core, in the overcoat that the soft rubber material of packing into is made, then insert ceramic powder, slightly jolt ramming, finally sealed is put into the medium static pressure of pressure chamber of isostatic pressing machine, after compacting finishes, open rubber sleeve, utilize at first the outward winding fastening bolt of the frustum of a cone of via hole, remove the frustum of a cone, then remove conical rod, can obtain the ceramic nozzle of isostatic compaction.
Beneficial effect of the present invention is as follows:
1, the present invention has solved original joint owing to the problem in conjunction with the blank cracking that does not closely cause by a plurality of part strong bonded of bolt with a cover ceramic nozzle isostatic pressing mold;
2, the present invention has adopted easy-to-dismount bolt connecting device, is convenient to mould and base substrate are separated on the one hand, and the stress damage when having reduced the demoulding has improved properties of product; Reduce on the other hand labour intensity, improved production efficiency.
Description of drawings
Fig. 1 is the top view of ceramic nozzle isostatic pressing mold inner core of the present invention;
Fig. 2 is the cutaway view of Figure 1A-A direction;
Wherein, 1, long conical rod, 2, the frustum of a cone, 3, bolt, 4, via hole.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Embodiment 1
As shown in the figure, a kind of single spraying ceramic nozzle isostatic pressing mold inner core adopts stainless steel material to form through machined, comprises long conical rod 1, the frustum of a cone 2, bolt 3; Described bolt 3 links together long conical rod 1 and the frustum of a cone 2, the upper disc of long conical rod 1 fit together with the upper disc of the frustum of a cone 2 and both diameters consistent; There is the threaded cylindrical bolt of not having of up/down perforation hole the described frustum of a cone 2 centers, and an internal thread hole is arranged at described long conical rod 1 top, and the bolt hole on the frustum of a cone is connected with internal thread hole on the long conical rod; The frustum of a cone 2 also has the via hole 4 of a non-perforation, and the cross sectional shape of via hole 4 is regular hexagon.
The physical dimension of the present embodiment ceramic nozzle isostatic pressing mold inner core each several part is as follows:
1) the diameter D5 of the lower disc of long conical rod 1 is 35mm, and the diameter D3 of upper disc is 15mm, and the length L 3 of conical rod is 120mm;
2) the diameter D3 of disc is 15mm on the frustum of a cone 2, and the diameter D4 of lower disc is 60mm, and the high L4 of the frustum of a cone is 40mm;
3) bolt 3 is hexagon socket head cap screw, and diameter of thread M is 8mm, and the diameter of unthreaded portion is that D1 is 8.5mm, and the diameter D2 of nut is 10mm, length 60mm.
4) via hole 4 is regular hexagon, hole depth 15mm, and parallel edges distance L 1 is 10mm, the centre-to-centre spacing L2 between the nut of via hole 4 and bolt 3 is 18mm.
After above-mentioned mould each several part connection is complete, be coated with the last layer releasing agent at inner core, in the overcoat that the soft rubber material of packing into is made, then insert ceramic powder, slightly jolt ramming, finally sealed is put into the medium static pressure of pressure chamber of isostatic pressing machine, after compacting finishes, open rubber sleeve, utilize at first the outward winding fastening bolt of the frustum of a cone of via hole, remove the frustum of a cone, then remove conical rod, can obtain the ceramic nozzle of isostatic compaction.
Need to prove, change geometric parameter, can also process the mould that obtains other shapes, enumerate no longer one by one herein.
Claims (6)
1. a single spraying ceramic nozzle isostatic pressing mold inner core comprises long conical rod, the frustum of a cone, bolt; It is characterized in that, described bolt links together long conical rod and the frustum of a cone, the upper disc of long conical rod fit together with the upper disc of the frustum of a cone and both diameters consistent.
2. a kind of single spraying as claimed in claim 1 ceramic nozzle isostatic pressing mold inner core, it is characterized in that, the preferred hexagon socket head cap screw of described bolt, the diameter of thread M minimum of bolt is not less than 3mm, and maximum is no more than 0.6 times of disc diameter D3 on the long conical rod; Bolt length is at least 1.1 times of frustum of a cone height, and can not be less than 15mm.
3. a kind of single spraying as claimed in claim 1 ceramic nozzle isostatic pressing mold inner core is characterized in that, there is the threaded cylindrical bolt of not having of up/down perforation hole described frustum of a cone center, and the physical dimension of bolt hole is determined with reference to used bolt; An internal thread hole is arranged at described long conical rod top, and its geometric parameter is determined with reference to used bolt; Bolt hole on the frustum of a cone is connected with internal thread hole on the long conical rod.
4. such as any one described a kind of single spraying of claim 1-3 ceramic nozzle isostatic pressing mold inner core, it is characterized in that, the diameter of the unthreaded portion of described bolt in the frustum of a cone is D1, is slightly larger than diameter of thread M, the nut diameter of bolt is D2, presses the plain bolt standard.
5. a kind of single spraying as claimed in claim 1 ceramic nozzle isostatic pressing mold inner core is characterized in that, the described frustum of a cone also has the via hole of a non-perforation, and the cross sectional shape of via hole is a kind of in triangle, square, the hexagon.
6. a kind of single spraying as claimed in claim 5 ceramic nozzle isostatic pressing mold inner core is characterized in that the preferred regular hexagon of the cross sectional shape of the via hole on the described frustum of a cone; The parallel edges distance L 1 of via hole is close with the nut diameter D2 of bolt, and the centre-to-centre spacing L2 between the nut of via hole and bolt satisfies: L2〉1/2 (L1+D2)+3, unit is mm; The hole depth of via hole is 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210401043.1A CN102862221B (en) | 2012-10-19 | 2012-10-19 | A kind of single spraying head ceramic nozzle isostatic pressing mold inner core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210401043.1A CN102862221B (en) | 2012-10-19 | 2012-10-19 | A kind of single spraying head ceramic nozzle isostatic pressing mold inner core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102862221A true CN102862221A (en) | 2013-01-09 |
| CN102862221B CN102862221B (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210401043.1A Active CN102862221B (en) | 2012-10-19 | 2012-10-19 | A kind of single spraying head ceramic nozzle isostatic pressing mold inner core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105690545A (en) * | 2016-04-07 | 2016-06-22 | 广州三环新材料有限责任公司 | Core and ceramic core inserting mold with core |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3205534A (en) * | 1961-03-24 | 1965-09-14 | Langecker Erhard | Device for producing hollow bodies from thermoplastic synthetic material |
| CN2663125Y (en) * | 2003-08-01 | 2004-12-15 | 北京化工大学 | Super high molecular weight polythene injection forming machine |
| RU2005140653A (en) * | 2003-05-27 | 2006-05-10 | Хеберляйн Файбертекнолоджи, Инк. (Ch) | NOZZLE CORE DEVICES FOR PRODUCING A LOOSE THREAD AND METHOD FOR PRODUCING A NOZZLE CORE |
| JP2009166371A (en) * | 2008-01-16 | 2009-07-30 | Minoru Kasei Kk | Extrusion molding machine for cylindrical plastic |
| CN201474638U (en) * | 2009-07-31 | 2010-05-19 | 中国石油化工集团公司 | Defoaming device for foam drilling machine |
| CN202862359U (en) * | 2012-10-19 | 2013-04-10 | 山东宝纳新材料有限公司 | Single sprayer ceramic nozzle isostatic pressing molding mold inner core |
-
2012
- 2012-10-19 CN CN201210401043.1A patent/CN102862221B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3205534A (en) * | 1961-03-24 | 1965-09-14 | Langecker Erhard | Device for producing hollow bodies from thermoplastic synthetic material |
| RU2005140653A (en) * | 2003-05-27 | 2006-05-10 | Хеберляйн Файбертекнолоджи, Инк. (Ch) | NOZZLE CORE DEVICES FOR PRODUCING A LOOSE THREAD AND METHOD FOR PRODUCING A NOZZLE CORE |
| CN2663125Y (en) * | 2003-08-01 | 2004-12-15 | 北京化工大学 | Super high molecular weight polythene injection forming machine |
| JP2009166371A (en) * | 2008-01-16 | 2009-07-30 | Minoru Kasei Kk | Extrusion molding machine for cylindrical plastic |
| CN201474638U (en) * | 2009-07-31 | 2010-05-19 | 中国石油化工集团公司 | Defoaming device for foam drilling machine |
| CN202862359U (en) * | 2012-10-19 | 2013-04-10 | 山东宝纳新材料有限公司 | Single sprayer ceramic nozzle isostatic pressing molding mold inner core |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105690545A (en) * | 2016-04-07 | 2016-06-22 | 广州三环新材料有限责任公司 | Core and ceramic core inserting mold with core |
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| CN102862221B (en) | 2015-08-12 |
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