CN1631846A - Zone sintering method for long and porous ceramics - Google Patents
Zone sintering method for long and porous ceramics Download PDFInfo
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- CN1631846A CN1631846A CN 200410101013 CN200410101013A CN1631846A CN 1631846 A CN1631846 A CN 1631846A CN 200410101013 CN200410101013 CN 200410101013 CN 200410101013 A CN200410101013 A CN 200410101013A CN 1631846 A CN1631846 A CN 1631846A
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Abstract
The invention relates a method for ceramics burn, concretely, relates to an area burn method for ceramic switch long size and multiple holes applied in high temperature gas filtration pipe, bubble generator and burner used in chemical industry and heat exchanger. Place the substance to be burnt on the unfixed support plate by which they can be moved into or out from the furnace, they are moved into vertically from the bottom, with their lengths; longer than that of the part of furnace with the highest temperature. The invention has lots of beneficial effect: since it uses area furnace, the price and energy are both decreased, besides, the time for burn is much shorter. The invention uses area burn and has balanced moving speed, so that the substance to be burnt will be broken and deformation, the ceramics material burnt is wholly average.
Description
Technical field
The present invention relates to a kind of sintering method of pottery, specifically relate to a kind of strainer tube that is applied to use in 250 ℃～1000 ℃ high-temperature gases, chemical industry region-type sintering method with the long size porous ceramic of bubble generator burner, heat exchanger.
Background technology
The sintering of large size ceramic products such as long size article generally adopts the batch-type sintering method.Promptly will the agglomerating product be fixed in the furnace chamber of large scale sintering stove and carry out sintering.Elongated pipe or products such as rod, plate are sling mostly and are carried out sintering.This method is to rely on the weight that is sintered body self to correct the distortion such as bending that produce in the sintering process.And the general method of coming of slinging that also adopts such as the ceramic of long size pipe etc. is carried out sintering.This sintering method remains in following technical problem: one, because agglomerating plant must maximize, therefore the cost of device can become expensive, and needs a large amount of sintering energy, also corresponding prolongation of sintering period; When two, slinging sintering, can rupture with aforesaid method midway.Porous ceramic is the different microtexture of basal area that is made of ceramic segment and space, and when pottery was sling sintering, stress concentrated on thin especially, and the extension of this thin or fracture etc. can cause the ceramic integral fracture.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiency that prior art exists, and provides a kind of sintering at short notice long size ceramic material, and the ceramic material integral body that is sintered isostatic region-type sintering method very.
The region-type sintering method of the long size porous ceramic of the present invention is achieved by following technical proposals.The sintering process of region-type sintering method of the present invention imports in the stove for being sintered thing, sintering, shift out, the described thing that is sintered is to be placed in order to relax or to eliminate tensile stress and import on the packaged type brace table that is provided with and shift out in the stove, being sintered thing vertically passes through from sintering oven from bottom to top with brace table, top temperature is partly short than the length that is sintered thing in the sintering oven, is one section one section and imports in the stove gradually and be sintered and be sintered thing.
The region-type sintering method of the long size porous ceramic of the present invention has following beneficial effect compared with prior art: because the present invention takes the region-type sintering oven, body of heater can be done little, and the cost of stove is reduced, and sintering institute energy requirement reduces.In addition, be sintered in the sintering time that body passes through in stove and can finish sintering, the intensification of stove self has not just needed cooling time, at short notice the long size ceramic material of sintering.The present invention takes the region-type sintering, and the translational speed equilibrium, is sintered thing and can rupture, chap, and does not deform, and the ceramic material integral body that is sintered out is very balanced.Use 100 required energy consumptions of tubulose molding of batch-type electric furnace sintering to be 350KVA, and use 100 required energy consumptions of tubulose molding of region-type sintering of the present invention to be 150KVA, by more as can be seen, region-type agglomerating power consumption cost of the present invention reduces greatly.
Embodiment
Below in conjunction with embodiment technical solution of the present invention is further described.
The body of heater of the region-type sintering method of the long size porous ceramic of the present invention is vertical sintering oven, sintering process is that to be sintered thing be to be placed in order to relax or to eliminate to import on the packaged type brace table that tensile stress is provided with and shift out in the stove, being sintered thing vertically passes through from sintering oven from bottom to top with brace table, top temperature is partly short than the length that is sintered thing in the sintering oven, is one section one section and imports in the stove gradually and be sintered and be sintered thing.
The described thing that is sintered begins from the upper end vertically to import in the stove from the body of heater bottom, and sintering temperature begins to rise from being sintered the thing upper end, is sintered thing begins thermal expansion and wedding agent with the rising of brace table calcination; The described thing that is sintered begins from the lower end vertically to shift out in the stove from body of heater, along with the decline of brace table, is sintered thing and begins thermal contraction.
The described translational speed that is sintered the thing importing and shifts out in the stove is 23cm～27cm/ hour; Its optimum travel rate degree is 25cm/ hour.
Described when being sintered thing and importing in the stove, sintering oven is preheated to 1400 ℃ in advance.
The length of the top temperature part of described sintering oven is 40cm～60cm; Its optimum length is 50cm.
Described sintering oven can be any body of heater in electric furnace, gas furnace, the oil oven.
Embodiment 1.
Get and mix 54
#100 parts on SiC particle, 1000
#10 parts on SiC particle, surface-area 10m
2The high-purity alpha-alumina fine powder of/g, 2 parts in potato powder, 20 parts in pure heating for dissolving tackiness agent, form slurry is done in 100 parts of mixing of pure water.This slurry is injected in the hollow gypsum mould of long 1.6m, diameter 6cm, can obtain the tubulose molding of end sealing after dry 20 days.
During sintering, earlier this tubulose molding is placed on the packaged type brace table, imports in the region-type sintering oven that is preheated to 1400 ℃ in advance with 25cm/ hour translational speed then.The length of the top temperature part of employed region-type sintering oven is 50cm, and the each several part that is sintered thing kept 2 hours in 1400 ℃ of environment, and sintered compact does not have be full of cracks and distortion, and sintering is good.
Claims (9)
1, a kind of region-type sintering method of growing the size porous ceramic, it is characterized in that: the body of heater of described region-type sintering method is vertical sintering oven, sintering process is that to be sintered thing be to be placed in order to relax or to eliminate to import on the packaged type brace table that tensile stress is provided with and shift out in the stove, being sintered thing vertically passes through from sintering oven from bottom to top with brace table, top temperature is partly short than the length that is sintered thing in the sintering oven, is one section one section and imports agglomerating in the stove gradually and be sintered thing.
2, the region-type sintering method of long size porous ceramic as claimed in claim 1 is characterized in that: the described thing that is sintered begins from the upper end vertically to import in the stove from the body of heater bottom, and sintering temperature begins to rise from being sintered the thing upper end; Be sintered thing begins thermal expansion and wedding agent with the rising of brace table calcination.
3, the region-type sintering method of long size porous ceramic as claimed in claim 1 is characterized in that: the described thing that is sintered begins to shift out from the lower end in the stove, along with the decline of brace table, is sintered thing and begins thermal contraction.
4, as the region-type sintering method of claim 1,2 or 3 described long size porous ceramics, it is characterized in that: the described translational speed that is sintered the thing importing and shifts out in the stove is 23cm～27cm/ hour.
5, the region-type sintering method of long size porous ceramic as claimed in claim 4 is characterized in that: described translational speed the best that is sintered the thing importing and shifts out in the stove is 25cm/ hour.
6, the region-type sintering method of long size porous ceramic as claimed in claim 1 is characterized in that: described when being sintered thing and importing in the stove, sintering oven is preheated to 1400 ℃ in advance.
7, the region-type sintering method of long size porous ceramic as claimed in claim 1 is characterized in that the length of the top temperature part of described sintering oven is 40cm～60cm.
8, the region-type sintering method of long size porous ceramic as claimed in claim 5 is characterized in that: the length of the top temperature part of described sintering oven is best to be 50cm.
9, the region-type sintering method of long size porous ceramic as claimed in claim 1 is characterized in that: described sintering oven can be any body of heater in electric furnace, gas furnace, the oil oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410101013 CN1631846A (en) | 2004-12-01 | 2004-12-01 | Zone sintering method for long and porous ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410101013 CN1631846A (en) | 2004-12-01 | 2004-12-01 | Zone sintering method for long and porous ceramics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1631846A true CN1631846A (en) | 2005-06-29 |
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ID=34848059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410101013 Pending CN1631846A (en) | 2004-12-01 | 2004-12-01 | Zone sintering method for long and porous ceramics |
Country Status (1)
| Country | Link |
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| CN (1) | CN1631846A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148745A (en) * | 2015-04-14 | 2016-11-23 | 上海六晶科技股份有限公司 | Use the method that zone sintering method prepares tungsten nickel iron alloy |
| CN108046763A (en) * | 2017-12-07 | 2018-05-18 | 中国西电电气股份有限公司 | A kind of process for calcining for preventing the hollow insulator high temperature deformation of dry method |
-
2004
- 2004-12-01 CN CN 200410101013 patent/CN1631846A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148745A (en) * | 2015-04-14 | 2016-11-23 | 上海六晶科技股份有限公司 | Use the method that zone sintering method prepares tungsten nickel iron alloy |
| CN106148745B (en) * | 2015-04-14 | 2018-06-12 | 上海六晶科技股份有限公司 | The method that tungsten nickel iron alloy is prepared using zone sintering method |
| CN108046763A (en) * | 2017-12-07 | 2018-05-18 | 中国西电电气股份有限公司 | A kind of process for calcining for preventing the hollow insulator high temperature deformation of dry method |
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