CN102862221B - A kind of single spraying head ceramic nozzle isostatic pressing mold inner core - Google Patents
A kind of single spraying head ceramic nozzle isostatic pressing mold inner core Download PDFInfo
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- CN102862221B CN102862221B CN201210401043.1A CN201210401043A CN102862221B CN 102862221 B CN102862221 B CN 102862221B CN 201210401043 A CN201210401043 A CN 201210401043A CN 102862221 B CN102862221 B CN 102862221B
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Abstract
The invention provides a kind of isostatic pressing method and prepare single spraying head ceramic nozzle mold core, comprise long conical rod, the frustum of a cone, and connect the bolt of the frustum of a cone and long conical rod, the frustum of a cone is except the through bolt hole be connected with conical rod in centre, also have the via hole with certain depth that non-penetrating, facilitate bolt to screw and outward winding.The present invention, by the multiple part strong bonded of bolt by a set of ceramic nozzle isostatic pressing mold, solves original joint owing to combining not the closely problem of the blank cracking caused; Meanwhile, because have employed easy-to-dismount bolt connecting device, be convenient to mould and base substrate to separate on the one hand, reduce the stress damage during demoulding, improve properties of product; Reduce labour intensity on the other hand, improve production efficiency.
Description
Technical field
The present invention relates to a kind of isostatic pressing method and prepare single spraying head ceramic nozzle mold core, belong to the shaping manufacture field of Inorganic Non-metallic Materials.
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 features such as high strength, high temperature resistant, corrosion-resistant, long service life, and this proposes very high requirement to the forming method of ceramic nozzle and shaping jig.
The forming method mainly injection forming of ceramic nozzle conventional at present, slip-casting shaping process process is complicated, manufacturing cycle is long, and there is composition and density gradient difference in interiors of products, especially the inwall density of nozzle is low, causes intensity and hardness to reduce, wears no resistance, the service life of ceramic nozzle is shortened greatly, the inherent advantage that nozzle prepared by ceramic material can not be given full play to.
Isostatic compaction is a kind of briquetting process utilizing liquid medium transmission of pressure, the displacement transfer that elastic mould produces when being subject to medium pressure liquid is to the powder in mould, because active force is in all directions equal, thus base substrate uniform force, Density Distribution is homogeneous, greatly can improve the performance of obtained product.The conveniently demoulding, mostly at present conventional ceramic nozzle isostatic pressing mold is segmented to connect, although be convenient to throw off, but there is the problem that joining place is easy to ftracture, greatly reduce the yield rate of product each other with slot.
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 head 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, and the upper disc of long conical rod fits together with the upper disc of the frustum of a cone and both diameters are consistent.
The preferred hexagon socket head cap screw of described bolt, the diameter of thread M of bolt is minimum is not less than 3mm, maximum 0.6 times of being no more than disc diameter D3 on long conical rod; Bolt length is at least 1.1 times of frustum of a cone height, and can not be less than 15mm.
What there was a up/down perforation described frustum of a cone center does not have threaded cylindrical bolt hole, and the physical dimension of bolt hole is determined with reference to bolt used; An internal thread hole is arranged at described long conical rod top, and its geometric parameter is determined with reference to bolt used; Bolt hole on the frustum of a cone is connected with the internal thread hole on long conical rod.
The diameter of the unthreaded portion of described bolt in the frustum of a cone is D1, and slightly larger than diameter of thread M, the head diameter of bolt is D2, determines by plain bolt standard.
The described frustum of a cone also has a non-penetrating via hole, and the cross sectional shape of via hole is the one in triangle, square, hexagon, facilitates bolt screw and outward winding.
The preferred regular hexagon of cross sectional shape of the via hole on the described frustum of a cone, selects general inner hexagon spanner to facilitate; The parallel edges distance L1 of via hole is close with the head diameter D2 of bolt, and the centre-to-centre spacing L2 between via hole and the nut of bolt meets: 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 head 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, length L3 is 30 ~ 1000mm;
2) the upper disc diameter D3 of the frustum of a cone 2 is 5 ~ 100mm, consistent with disc diameter on conical rod 1, and lower disc diameter D4 is 10 ~ 500mm.
After being connected by above-mentioned mould, inner core is coated with last layer releasing agent, in the overcoat that loading soft rubber material is made, then ceramic powder is inserted, jolt ramming slightly, finally sealed, puts into the pressure chamber isostatic pressed of isostatic pressing machine, after compacting terminates, open rubber sleeve, utilize via hole first to outward winding the fastening bolt of the frustum of a cone, remove the frustum of a cone, then remove conical rod, the ceramic nozzle of isostatic compaction can be obtained.
Beneficial effect of the present invention is as follows:
1, the present invention is by the multiple part strong bonded of bolt by a set of ceramic nozzle isostatic pressing mold, solves original joint owing to combining not the closely problem of the blank cracking caused;
2, present invention employs easy-to-dismount bolt connecting device, be convenient to mould and base substrate to separate on the one hand, reduce the stress damage during demoulding, improve properties of product; Reduce labour intensity on the other hand, improve production efficiency.
Accompanying drawing explanation
Fig. 1 is the top view of ceramic nozzle isostatic pressing mold inner core of the present invention;
Fig. 2 is the sectional view in Figure 1A-A direction;
Wherein, 1, long conical rod, 2, the frustum of a cone, 3, bolt, 4, via hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
Embodiment 1
As shown in the figure, a kind of single spraying head 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, and the upper disc of long conical rod 1 fits together with the upper disc of the frustum of a cone 2 and both diameters are consistent; What there was a up/down perforation the described frustum of a cone 2 center does not have threaded cylindrical bolt hole, 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 the internal thread hole on long conical rod; The frustum of a cone 2 also has a non-penetrating via hole 4, 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 L3 of conical rod is 120mm;
2) on the frustum of a cone 2, the diameter D3 of disc is 15mm, and the diameter D4 of lower disc is 60mm, and frustum of a cone height L4 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 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 L1 is 10mm, and the centre-to-centre spacing L2 between the nut of via hole 4 and bolt 3 is 18mm.
After being connected by above-mentioned mold portions, inner core is coated with last layer releasing agent, in the overcoat that loading soft rubber material is made, then ceramic powder is inserted, jolt ramming slightly, finally sealed, puts into the pressure chamber isostatic pressed of isostatic pressing machine, after compacting terminates, open rubber sleeve, utilize via hole first to outward winding the fastening bolt of the frustum of a cone, remove the frustum of a cone, then remove conical rod, the ceramic nozzle of isostatic compaction can be obtained.
It should be noted that, change geometric parameter, the mould obtaining other shapes can also be processed, will not enumerate herein.
Claims (3)
1. a single spraying head 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, and the upper disc of long conical rod fits together with the upper disc of the frustum of a cone and both diameters are consistent;
The preferred hexagon socket head cap screw of described bolt, the diameter of thread M of bolt is minimum is not less than 3mm, maximum 0.6 times of being no more than disc diameter D3 on long conical rod; Bolt length is at least 1.1 times of frustum of a cone height, and can not be less than 15mm;
What there was a up/down perforation described frustum of a cone center does not have threaded cylindrical bolt hole, and the physical dimension of bolt hole is determined with reference to bolt used; An internal thread hole is arranged at described long conical rod top, and its geometric parameter is determined with reference to bolt used; Bolt hole on the frustum of a cone is connected with the internal thread hole on long conical rod;
The described frustum of a cone also has a non-penetrating via hole, and the cross sectional shape of via hole is the one in triangle, square, hexagon.
2. a kind of single spraying head ceramic nozzle isostatic pressing mold inner core as claimed in claim 1, it is characterized in that, the diameter of the unthreaded portion of described bolt in the frustum of a cone is D1, slightly larger than diameter of thread M, the head diameter of bolt is D2, determines by plain bolt standard.
3. a kind of single spraying head ceramic nozzle isostatic pressing mold inner core as claimed in claim 1, is characterized in that, the preferred regular hexagon of cross sectional shape of the via hole on the described frustum of a cone; The parallel edges distance L1 of via hole is close with the head diameter D2 of bolt, and the centre-to-centre spacing L2 between via hole and the nut of bolt meets: L2>1/2 (L1+D2)+3, and 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 |
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| 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 |
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| Publication Number | Publication Date |
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| CN102862221A CN102862221A (en) | 2013-01-09 |
| CN102862221B true CN102862221B (en) | 2015-08-12 |
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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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105690545B (en) * | 2016-04-07 | 2018-11-16 | 潮州三环（集团）股份有限公司 | A kind of type core and the ceramic insertion core mold containing the type core |
Citations (5)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009166371A (en) * | 2008-01-16 | 2009-07-30 | Minoru Kasei Kk | Extrusion molding machine for cylindrical plastic |
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2012
- 2012-10-19 CN CN201210401043.1A patent/CN102862221B/en active Active
Patent Citations (5)
| 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 |
| 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 |
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| CN102862221A (en) | 2013-01-09 |
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