CN103884176A - Thin-walled ceramic tube sintering device - Google Patents
Thin-walled ceramic tube sintering device Download PDFInfo
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- CN103884176A CN103884176A CN201410071896.2A CN201410071896A CN103884176A CN 103884176 A CN103884176 A CN 103884176A CN 201410071896 A CN201410071896 A CN 201410071896A CN 103884176 A CN103884176 A CN 103884176A
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- ceramic pipe
- base
- sintering
- sintered ceramic
- pipe body
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Abstract
The invention discloses a thin-walled ceramic tube sintering device which comprises a high-temperature furnace, a protecting device and a sintered blank. The protecting device is composed of a protecting crucible and a protecting base, and the sintered blank is composed of a sintered ceramic tube blank and a sintering base blank. The protecting device provides a closed space at the high temperature, and deformation and cracking of thin-walled ceramic tubes in the process of high-temperature sintering of the thin-walled ceramic tubes are prevented by the aid of the sintered blank. A manufacturing device and technology are quite applicable to manufacturing of beta'-Al2O3 electrolytic ceramic tubes of sodium-sulfur cells, and the thin-walled ceramic tube sintering device is applicable to massive sintering.
Description
Technical field
The present invention relates to earthenware preparation facilities field, be specially a kind of sintering equipment of thin-wall ceramic pipe.
Background technology
β " Al
2o
3earthenware is Na/S battery and Na/NiCl
2the core component of battery, has conclusive effect to the performance of battery.β " Al
2o
3be a kind of typical solid electrolyte material, it has higher Na
+electrical conductivity and extremely low electronic conductivity.Under normal circumstances, β " Al
2o
3pottery all adopts the thin-wall ceramic pipe shape of one end sealing, is conducive on the one hand the structural design of battery, reduces the internal resistance of cell on the other hand by high surface area and the thin-walled of earthenware.Meanwhile, β " Al
2o
3the phase constituent, intensity, density of pottery etc. all has direct impact to its performance, so, β " Al
2o
3the sintering technology of preparing of pottery also becomes Na/S and Na/NiCl
2the key of battery technology.
The preparation technology of earthenware is generally powder process, moulding and sintering, and sintering method generally hangs burning, rolling sintering etc., for sintering high temperature boiler tube, ceramic rod etc.Patent 201110041219.2 provides a kind of preparation method of electrovacuum ceramic tube envelope, uses the technique of ball milling and wax, moulding, sintering.The method, owing to using wax moulding, is not suitable for the highly purified function ceramics of preparation, and more difficult the preventing of sintering process is out of shape.Patent 201010264727.2 provides a kind of aluminum oxide ceramic slender tube and preparation method thereof.The method is used the silicon carbide deck with holes Vehicle Processing pottery pipe sintering of slinging, and has effectively prevented the problem of earthenware sintering warpage, but has been only applicable to not have under sintering high temperature the material of volatility and phase transformation, as corundum.Patent 201010271839.0 provides a kind of vertical sintering method and device of ceramic cartridge.The method also contributes to prevent earthenware sintering warpage and raising yield rate, but is only applicable to both ends open earthenware sintering, and institute's use servicing unit shape is more complicated, and difficulty of processing is high.
Summary of the invention
The object of this invention is to provide a kind of sintering equipment of thin-wall ceramic pipe, to solve deficiency and the β " Al of prior art thin-wall ceramic pipe technology of preparing
2o
3the technological difficulties of earthenware sintering.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of sintering equipment of thin-wall ceramic pipe, comprise by body of heater, be arranged on the high temperature furnace that the base on body of heater inner bottom part forms, it is characterized in that: on described base, be provided with one or more protective devices, each protective device is respectively by the protection base being placed on base, the protection crucible that mouth tips upside down on going to the bottom on protection base forms, and protection crucible forms confined space with protection base, in each protective device, be respectively arranged with one or more sintered bodies, each sintered body is respectively by sintering base base substrate, sintered ceramic pipe body forms, the protected crucible of described sintering base base substrate covers and is placed on protection base, the mode of described sintered ceramic pipe body on going to the bottom with mouth is positioned on sintering base base substrate.
The sintering equipment of described a kind of thin-wall ceramic pipe, is characterized in that: in each sintered body, sintering base base substrate has disk shape.
The sintering equipment of described a kind of thin-wall ceramic pipe, is characterized in that: sintering base base substrate top is provided with single circular groove or individual pen ring groove, and described its oral area of sintered ceramic pipe body is placed in circular groove or ring groove.
The sintering equipment of described a kind of thin-wall ceramic pipe, it is characterized in that: sintering base base substrate top is provided with the concentric circular groove of at least two circles, sintered ceramic pipe body has at least two, and sintered ceramic pipe body diameter increases successively, central axle sleeve is external at the less sintered ceramic pipe of diameter altogether successively for the larger sintered ceramic pipe body of diameter, wherein its oral area of sintered ceramic pipe body of diameter minimum is placed in the circular groove of sintering base base substrate innermost circle, all the other sintered ceramic pipe bodies separately oral area respectively one by one correspondence be placed in all the other circular grooves of sintering base base substrate.
The sintering equipment of described a kind of thin-wall ceramic pipe, it is characterized in that: sintering base base substrate top is provided with the concentric ring groove of at least two circles, sintered ceramic pipe body has at least two, and sintered ceramic pipe body diameter increases successively, central axle sleeve is external at the less sintered ceramic pipe of diameter altogether successively for the larger sintered ceramic pipe body of diameter, wherein its oral area of sintered ceramic pipe body of diameter minimum is placed in the ring groove of sintering base base substrate innermost circle, all the other sintered ceramic pipe bodies separately oral area respectively one by one correspondence be placed in all the other ring grooves of sintering base base substrate.
The sintering equipment of described a kind of thin-wall ceramic pipe, it is characterized in that: sintering base base substrate top is provided with at least two circular groove and the ring grooves that distribute with one heart, sintered ceramic pipe body has at least two, and sintered ceramic pipe body diameter increases successively, central axle sleeve is external at the less sintered ceramic pipe of diameter altogether successively for the larger sintered ceramic pipe body of diameter, sintered ceramic pipe body separately oral area respectively one by one correspondence be placed in sintering base base substrate circle or ring groove.
The sintering equipment of described a kind of thin-wall ceramic pipe, is characterized in that: the diameter of described circular groove is greater than the external diameter of the sintered ceramic pipe body that oral area puts into.
The sintering equipment of described a kind of thin-wall ceramic pipe: it is characterized in that: the external diameter of described ring groove is greater than the external diameter of the sintered ceramic pipe body that oral area puts into, the internal diameter of ring groove is less than the internal diameter of the sintered ceramic pipe body that oral area puts into.
The sintering equipment of described a kind of thin-wall ceramic pipe; it is characterized in that: described protection base is disk shape; protection base top can arrange the boss of buckling for protection crucible oral area; or the groove buckling into for protection crucible oral area, and contact-making surface process polishing between protection crucible oral area and protection base.
The present invention can prevent earthenware issuable distortion, cracking in sintering process effectively, and can prevent that under high temperature, volatility atmosphere is overflowed, and ensures the high β " Al of sintered ceramic
2o
3phase content.Sintering base base substrate has identical shrinkage factor with sintered ceramic pipe body, and the annular of sintering base base substrate or circular groove can base substrate place with sintering process in, play the constraint effect of location and restriction.In sintering process, the thickness of disk can ensure the shape invariance of self, thereby ensures that by location and the restriction of groove deformation can not occur earthenware base substrate in sintering process.Protection crucible contacts by the seamless of machined surface with protection base, can form good confined space, effectively prevents the effusion of volatility atmosphere in sintering process under high temperature.Sintering equipment of the present invention is applicable to β " Al
2o
3the mass sintering preparation of earthenware, can place many group protective devices in high temperature furnace, can place many group sintered bodies in protective device, and sintered body can be made up of the earthenware base substrate of multiple concentric placement different-diameters.Sintering equipment is equally applicable to both ends open thin-wall ceramic pipe and the sintering without the thin-wall ceramic pipe of non-volatility atmosphere generation under protective device high temperature.
Brief description of the drawings
Fig. 1 is apparatus of the present invention schematic diagram.
Fig. 2 is sintering base blank structure schematic diagram in the specific embodiment of the invention.
Fig. 3 is another structural representation of sintering base base substrate in the specific embodiment of the invention.
Detailed description of the invention
As shown in Figure 1.A kind of sintering equipment of thin-wall ceramic pipe, comprise by body of heater 11, be arranged on the high temperature furnace that the base 12 on body of heater 11 inner bottom parts forms, on base 12, be provided with one or more protective devices, each protective device is respectively by the protection base 21 being placed on base 12, the protection crucible 22 that mouth tips upside down on going to the bottom on protection base 21 forms, and protection crucible 22 forms confined space with protection base 21, in each protective device, be respectively arranged with one or more sintered bodies, each sintered body is respectively by sintering base base substrate 31, sintered ceramic pipe body 32, 33 form, sintering base base substrate 31 protected crucibles cover and are placed on protection base 21, the mode of sintered ceramic pipe body on going to the bottom with mouth is positioned on sintering base base substrate 31.
In each sintered body, sintering base base substrate 31 has disk shape.
Sintering base base substrate 31 tops are provided with single circular groove 35 or individual pen ring groove 34, and sintered ceramic pipe body oral area is placed in circular groove 35 or ring groove 34.
Sintering base base substrate 31 tops are provided with the concentric circular groove 35 of at least two circles, sintered ceramic pipe body has at least two, and sintered ceramic pipe body diameter increases successively, central axle sleeve is external at the less sintered ceramic pipe of diameter altogether successively for the larger sintered ceramic pipe body of diameter, wherein its oral area of sintered ceramic pipe body of diameter minimum is placed in the circular groove of sintering base base substrate innermost circle, all the other sintered ceramic pipe bodies separately oral area respectively one by one correspondence be placed in all the other circular grooves of sintering base base substrate.
Sintering base base substrate 31 tops are provided with the concentric ring groove 34 of at least two circles, sintered ceramic pipe body has at least two, and sintered ceramic pipe body diameter increases successively, central axle sleeve is external at the less sintered ceramic pipe of diameter altogether successively for the larger sintered ceramic pipe body of diameter, wherein its oral area of sintered ceramic pipe body of diameter minimum is placed in the ring groove of sintering base base substrate innermost circle, all the other sintered ceramic pipe bodies separately oral area respectively one by one correspondence be placed in all the other ring grooves of sintering base base substrate.
Sintering base base substrate 31 tops are provided with at least two circular groove 35 and the ring grooves 34 that distribute with one heart, sintered ceramic pipe body has at least two, and sintered ceramic pipe body diameter increases successively, central axle sleeve is external at the less sintered ceramic pipe of diameter altogether successively for the larger sintered ceramic pipe body of diameter, sintered ceramic pipe body separately oral area respectively one by one correspondence be placed in sintering base base substrate circle or ring groove.
The diameter of circular groove 35 is greater than the external diameter of the sintered ceramic pipe body that oral area puts into.
The external diameter of ring groove 34 is greater than the external diameter of the sintered ceramic pipe body that oral area puts into, and the internal diameter of ring groove 34 is less than the internal diameter of the sintered ceramic pipe body that oral area puts into.
Protection base 21 is disk shape, and protection base 21 tops can arrange for the boss of protecting crucible 22 oral areas to buckle, or the groove buckling into for protection crucible 22 oral areas, and contact-making surface 23 process polishings between protection crucible 22 oral areas and protection base 21.
Sintering equipment of the present invention is made up of high temperature furnace, protective device, sintered body.Protective device is by protecting crucible and protection base to form, and sintered body is made up of sintered ceramic pipe body and sintering base base substrate.Protection crucible is placed on protection base, and forms confined space with protection base, and sintered ceramic pipe body is placed on sintering base base substrate.Sintered body is placed in protective device, and protective device is placed in high temperature furnace.
Protection crucible is high fine and close, high temperature resistant, alkali resistance corrosion material crucible, is generally magnesia or beta alumina ceramic crucible; Protection base is high temperature resistant, alkali resistance corrosion material base, is generally magnesia or beta aluminium oxide ceramics base; Sintering base base substrate has same shrinkage factor with sintered ceramic pipe body in sintering process, and sintering base base substrate is selected identical material composition conventionally with sintered ceramic pipe body.
Protection base is disk shape, can have boss or groove, and protection crucible has one end closed tube, and protection base, has compared with high-flatness and fineness through polishing with protection crucible contact-making surface, under high temperature, can form good confined space.
Sintering base base substrate has disk shape, thickness is 0.5～3 centimetre, diameter is greater than earthenware base substrate external diameter, and upper surface has annulus or circular groove, groove external diameter is greater than 0～4 millimeter of sintered ceramic pipe body diameter, groove internal diameter is less than 0～4 millimeter of sintered ceramic pipe body internal diameter, dark 1～10 millimeter of groove; Sintered ceramic pipe body is vertically put on sintering base base substrate, and the sintered ceramic pipe body mouth of pipe is put in sintering base base substrate groove.Groove plays the generation of avoiding earthenware distortion to fettering the mouth of pipe in earthenware base substrate location and high-temperature sintering process simultaneously.
Annulus or the circular groove of sintering base base substrate upper surface, can be one or more concentric grooves, for place one or more earthenware base substrates simultaneously.
On protection base, one or more sintering base base substrates can be placed simultaneously, in the protective device confined space of protecting base and protection crucible to form, one or more groups sintered body can be placed simultaneously.Protection crucible decides according to required placement sintered body quantity and sintered body size with protection base size.
On sintering furnace high temperature furnace base, one or more protection bases can be placed simultaneously, in sintering furnace chamber, one or more groups protective device can be placed simultaneously.
Specific embodiment:
As shown in Figure 1, be the sintering equipment of thin-wall ceramic pipe, particularly β " Al
2o
3the sintering equipment of electrolyte ceramics pipe.Sintering equipment is made up of high temperature furnace, protective device and sintered body.In high temperature furnace, there are two groups of protective devices, in every group of protective device, have two groups of sintered bodies.High temperature furnace is made up of body of heater 11 and base 12, and wherein body of heater comprises insulation material, exothermic material, shell etc.Protective device is by protecting base 21 and protection crucible 22 to form, and sintered body is made up of sintering base base substrate 31 and sintered ceramic pipe body 32,33.
Protection crucible 22 is one section of high density magnesia ceramic pipe of sealing, and protection base 21 is high density magnesia ceramic base.Mode under protection 22 ends of crucible are suitable for reading stands up on protection base 21, and protection crucible 22 passes through respectively polishing with contact-making surface 23 places of protection base 21, has higher flatness, fineness, in the process of high temperature sintering, can play good sealing effectiveness.Protection base upper surface, through polishing, contributes to the free shrink of sintered body in sintering process.In protective device, respectively there are two groups of sintered bodies; two sintered ceramic pipe bodies and a sintered ceramic pipe body are placed respectively; corresponding sintering base base substrate has been respectively a ring groove 34 and a circular groove 35 and has only had a ring groove 34, as shown in Figure 2 and Figure 3.The external diameter of ring groove 34 is greater than sintered ceramic pipe body 32 external diameter 0.5mm, the little beautiful sintered ceramic pipe body internal diameter 1mm of internal diameter, and the degree of depth is 3mm, thickness is 1.5cm.Circular groove 35 diameters are greater than sintered ceramic pipe body 33 external diameter 0.5mm.Sintered ceramic pipe the body 33 and 32 respectively mode of the end under suitable for reading stands up in circular groove 35 and ring groove 34.Sintered ceramic pipe body and sintering base base substrate composition are according to β " Al
2o
3the Al of matched
2o
3, Na
2o, Li
2the powders such as O form.Sintered body disk thickness is larger, can keep circular in sintering process, and its groove has the effect of location and constraint to sintered ceramic spout part, ensures that the two shrinks simultaneously, thereby has ensured that earthenware can not deform.The confined space that protective device forms has ensured that in sintering process, not having volatility atmosphere overflows, thereby ensures β " Al
2o
3high β " phase content and the high-compactness of earthenware.The quantity of one group of sintered body placing ceramic pipe body can be determined as required, processes the groove of respective numbers simultaneously on base base substrate.One group of protective device is placed sintered body quantity can be according to the two relative size and Location of requirement, and the protective device quantity of placing in high temperature furnace is also depending on the two size and real needs.
The present invention can well avoid the generation of being out of shape in thin-wall ceramic pipe sintering process, for β " Al
2o
3earthenware sintering can ensure high β " phase content and the high-compactness of sintered ceramic pipe.Described sintering equipment and technology design size as required, is applicable to mass sintered ceramic pipe.
Claims (9)
1. the sintering equipment of a thin-wall ceramic pipe, comprise by body of heater, be arranged on the high temperature furnace that the base on body of heater inner bottom part forms, it is characterized in that: on described base, be provided with one or more protective devices, each protective device is respectively by the protection base being placed on base, the protection crucible that mouth tips upside down on going to the bottom on protection base forms, and protection crucible forms confined space with protection base, in each protective device, be respectively arranged with one or more sintered bodies, each sintered body is respectively by sintering base base substrate, sintered ceramic pipe body forms, the protected crucible of described sintering base base substrate covers and is placed on protection base, the mode of described sintered ceramic pipe body on going to the bottom with mouth is positioned on sintering base base substrate.
2. the sintering equipment of a kind of thin-wall ceramic pipe according to claim 1, is characterized in that: in each sintered body, sintering base base substrate has disk shape.
3. the sintering equipment of a kind of thin-wall ceramic pipe according to claim 1, is characterized in that: sintering base base substrate top is provided with single circular groove or individual pen ring groove, and described its oral area of sintered ceramic pipe body is placed in circular groove or ring groove.
4. the sintering equipment of a kind of thin-wall ceramic pipe according to claim 1, it is characterized in that: sintering base base substrate top is provided with the concentric circular groove of at least two circles, sintered ceramic pipe body has at least two, and sintered ceramic pipe body diameter increases successively, central axle sleeve is external at the less sintered ceramic pipe of diameter altogether successively for the larger sintered ceramic pipe body of diameter, wherein its oral area of sintered ceramic pipe body of diameter minimum is placed in the circular groove of sintering base base substrate innermost circle, all the other sintered ceramic pipe bodies separately oral area respectively one by one correspondence be placed in all the other circular grooves of sintering base base substrate.
5. the sintering equipment of a kind of thin-wall ceramic pipe according to claim 1, it is characterized in that: sintering base base substrate top is provided with the concentric ring groove of at least two circles, sintered ceramic pipe body has at least two, and sintered ceramic pipe body diameter increases successively, central axle sleeve is external at the less sintered ceramic pipe of diameter altogether successively for the larger sintered ceramic pipe body of diameter, wherein its oral area of sintered ceramic pipe body of diameter minimum is placed in the ring groove of sintering base base substrate innermost circle, all the other sintered ceramic pipe bodies separately oral area respectively one by one correspondence be placed in all the other ring grooves of sintering base base substrate.
6. the sintering equipment of a kind of thin-wall ceramic pipe according to claim 1, it is characterized in that: sintering base base substrate top is provided with at least two circular groove and the ring grooves that distribute with one heart, sintered ceramic pipe body has at least two, and sintered ceramic pipe body diameter increases successively, central axle sleeve is external at the less sintered ceramic pipe of diameter altogether successively for the larger sintered ceramic pipe body of diameter, sintered ceramic pipe body separately oral area respectively one by one correspondence be placed in sintering base base substrate circle or ring groove.
7. according to the sintering equipment of a kind of thin-wall ceramic pipe described in claim 3 or 4 or 6, it is characterized in that: the diameter of described circular groove is greater than the external diameter of the sintered ceramic pipe body that oral area puts into.
8., according to the sintering equipment of a kind of thin-wall ceramic pipe described in claim 3 or 5 or 6: it is characterized in that: the external diameter of described ring groove is greater than the external diameter of the sintered ceramic pipe body that oral area puts into, the internal diameter of ring groove is less than the internal diameter of the sintered ceramic pipe body that oral area puts into.
9. the sintering equipment of a kind of thin-wall ceramic pipe according to claim 1; it is characterized in that: described protection base is disk shape; protection base top can arrange the boss of buckling for protection crucible oral area; or the groove buckling into for protection crucible oral area, and contact-making surface process polishing between protection crucible oral area and protection base.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071896.2A CN103884176A (en) | 2014-02-28 | 2014-02-28 | Thin-walled ceramic tube sintering device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071896.2A CN103884176A (en) | 2014-02-28 | 2014-02-28 | Thin-walled ceramic tube sintering device |
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| CN103884176A true CN103884176A (en) | 2014-06-25 |
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| CN201410071896.2A Pending CN103884176A (en) | 2014-02-28 | 2014-02-28 | Thin-walled ceramic tube sintering device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546997A (en) * | 2015-12-21 | 2016-05-04 | 上海电气钠硫储能技术有限公司 | Supporting device for sintering of alkaline electrolyte ceramic tube of sodium-sulfur cell |
| CN109650911A (en) * | 2018-12-26 | 2019-04-19 | 常熟市银洋陶瓷器件有限公司 | A kind of sintering method suitable for thin-wall part output window ceramics |
| US11335507B2 (en) * | 2016-08-30 | 2022-05-17 | Taiyo Yuden Co., Ltd. | Multi-layer ceramic capacitor and method of producing the same |
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| CN2806105Y (en) * | 2005-03-23 | 2006-08-16 | 山东大学 | Mould for preparation of pressureless sinterted ceramic body |
| CN202470723U (en) * | 2012-02-07 | 2012-10-03 | 上海恒热热工设备有限公司 | Sintering furnace |
| CN103499204A (en) * | 2013-10-17 | 2014-01-08 | 上海电气钠硫储能技术有限公司 | Sodium-sulfur battery electrolyte thin-wall ceramic tube sintering tool |
-
2014
- 2014-02-28 CN CN201410071896.2A patent/CN103884176A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2806105Y (en) * | 2005-03-23 | 2006-08-16 | 山东大学 | Mould for preparation of pressureless sinterted ceramic body |
| CN202470723U (en) * | 2012-02-07 | 2012-10-03 | 上海恒热热工设备有限公司 | Sintering furnace |
| CN103499204A (en) * | 2013-10-17 | 2014-01-08 | 上海电气钠硫储能技术有限公司 | Sodium-sulfur battery electrolyte thin-wall ceramic tube sintering tool |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546997A (en) * | 2015-12-21 | 2016-05-04 | 上海电气钠硫储能技术有限公司 | Supporting device for sintering of alkaline electrolyte ceramic tube of sodium-sulfur cell |
| US11335507B2 (en) * | 2016-08-30 | 2022-05-17 | Taiyo Yuden Co., Ltd. | Multi-layer ceramic capacitor and method of producing the same |
| CN109650911A (en) * | 2018-12-26 | 2019-04-19 | 常熟市银洋陶瓷器件有限公司 | A kind of sintering method suitable for thin-wall part output window ceramics |
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Application publication date: 20140625 |