CN102850058A - Sintering method of ceramic concentric sphere - Google Patents
Sintering method of ceramic concentric sphere Download PDFInfo
- Publication number
- CN102850058A CN102850058A CN2011101872475A CN201110187247A CN102850058A CN 102850058 A CN102850058 A CN 102850058A CN 2011101872475 A CN2011101872475 A CN 2011101872475A CN 201110187247 A CN201110187247 A CN 201110187247A CN 102850058 A CN102850058 A CN 102850058A
- Authority
- CN
- China
- Prior art keywords
- base substrate
- ceramic ball
- ceramic
- concentric
- sintering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
The invention discloses a cylinder which is prepared from two upper and lower pieces and a green material which is has the same material with a ceramic concentric sphere material and has a spherical hollow cavity. The thickness of the cylinder is thick. A ceramic concentric sphere base substrate is closely wrapped inside the cylinder, and then the cylinder together with the ceramic concentric sphere base substrate is sintered at high temperature such that the ceramic cylinder green compact and the ceramic concentric sphere base substrate can contract together during high-temperature sintering and force exerted on the whole surface of a ceramic concentric sphere is balanced so as to avoid deformation and cracking of the ceramic concentric sphere during the high-temperature sintering.
Description
Technical field
The present invention relates to a kind of artwork and make a kind of sintering method in field, particularly concentric ceramic ball.
Background technology
Concentric ceramic ball base substrate alternately is comprised of multilayer shelly sphere ceramic layer and multilayer shelly sphere sealing coat, and removing after burning till through high temperature becomes pulverous sealing coat, namely becomes the freely concentric ceramic ball of activity of each layer.In the whole making processes of concentric ceramic ball, after the making of having finished the homocentric sphere base substrate, how to make that the concentric ceramic ball that burns out is indeformable, not ftractureing has just become a technique difficult problem.The number of plies is more, bed thickness is thinner, sphere is larger, and just easier causing is out of shape and cracking when sintering.When the number of plies is a lot, because between layers gap is very little, distortion is arranged slightly, interlayer just can not be freely movable, makes whole the making unsuccessfully and all that has been achieved is spoiled.For making the whole spheroid of concentric ceramic ball stressed even in sintering process, concentric ceramic ball base substrate should be placed the box alms bowl during sintering and be embedded in aluminum oxide fine powder.But when high temperature sintering, the concentric ceramic ball produces and shrinks, aluminum oxide powder around the spheroid will subside and slide along with spheroid shrinks generation, discontinuity around when this just still can make concentric ceramic ball sintering, this is very large for the such product difficulty of sintered ceramic homocentric sphere, is easy to cause the spheroid distortion.
Summary of the invention
Goal of the invention: technical problem to be solved by this invention is the easy problem of cracking and distortion during for concentric ceramic ball sintering, and a kind of method that can not use box alms bowl sintered ceramic homocentric sphere is provided.
Technical scheme: for concentric ceramic ball easy problem of distortion and cracking when the high temperature sintering, except the problem that will solve sealing coat and ceramic layer synchronous, it is outside stressed even also will to make concentric ceramic ball base substrate produce when changing spheroid at the high temperature sintering volume.When being embedded in concentric ceramic ball base substrate in the aluminum oxide fine powder, homocentric sphere base substrate integral body is stressed to be balanced basically, but after the high temperature sintering homocentric sphere produces volumetric shrinkage, can produce the space between homocentric sphere and the aluminum oxide powder, aluminum oxide powder will be filled up these spaces, will produce and subside and slippage, at this moment the stressed unbalanced phenomena that occurs again of spheroid.Scheme provided by the invention is: after outermost one deck of concentric ceramic ball is finished, make one deck sealing coat in its outside again.Then use the right cylinder green compact with the hemisphere inner chamber of making two slit bamboo or chopped wood Hough shapes with the same blank of ceramic layer, the radius of its hemisphere is identical with last one deck sealing coat spherical radius, just in time concentric ceramic ball base substrate can be put into the semisphere inner chamber, again the right cylinder green compact of another slit bamboo or chopped wood with the semisphere inner chamber are closed, at this moment concentric ceramic ball base substrate by two slit bamboo or chopped woods up and down with the right cylinder green compact parcel of hollow sphere cavity wherein and cooperates denser.Right cylinder ceramic green thickness is enough large, makes it substantially indeformable when high temperature sintering shrinks.Like this, the right cylinder green compact, are accomplished when needing only sintering so slowly to heat up and slow cooling just near solid cylinder together with parcel concentric ceramic ball base substrate integral body wherein, produce distortion in the time of just can avoiding sintering.After sintering is finished, separate up and down two slit bamboo or chopped wood right cylinders, take out the concentric ceramic ball, remove aluminum oxide fine powder from the hollow part of ceramic layer, the sintering of concentric ceramic ball is namely accused and is finished.It is outermost one deck ceramic layer not to be made shelly but thickening and to make two slit bamboo or chopped woods cylindrical that this method also can be considered, stop when playing sintering with the thicker ceramic layer of this one deck distortion can conveniently take out again inside the effect of homocentric sphere.
The present invention includes following steps:
Step 5, use the same method and make another slit bamboo or chopped wood with the hemispheric right cylinder of hollow, make it wrap another hemisphere of concentric ceramic ball base substrate, whole like this concentric ceramic ball base substrate wraps with the right cylinder of hollow sphere cavity with regard to being divided into two slit bamboo or chopped woods, can be substantially indeformable when cylindrical thickness will guarantee high temperature sintering;
Step 6, with the right cylinder that the includes concentric ceramic ball base substrate sintering in the High Temperature Furnaces Heating Apparatus of packing into, below right cylinder, fill up again the ceramic green sheet of putting the same material of a slice when laying, the thickness of green sheet can not be too thin, and in some aluminum oxide sand of Ge Sa up and down, when alleviating high temperature sintering on the impact of cylinder deflation;
Step 7 behind the sintering, with two slit bamboo or chopped wood right cylinders separately, is taken out the concentric ceramic ball, takes out the aluminum oxide fine powder that has become loose from hollow part, and the sintering of concentric ceramic ball is namely accused and finished.
We can find out from said process, wrap concentric ceramic ball base substrate with the right cylinder of hollow sphere cavity after using the same material with ceramic layer to make two slit bamboo or chopped woods to close up and carry out sintering, just can burn out concentric ceramic ball substantially indeformable and convenient taking-up.
Beneficial effect: use method of the present invention, can make things convenient for sintering to go out indeformable indehiscent concentric ceramic ball and easily taking-up.
Description of drawings
Fig. 1 finishes situation behind last one deck sealing coat for concentric ceramic ball base substrate in mould, 1 is mould among the figure, and Dark grey district 2 is homocentric sphere green ceramic floor, and light gray zones 3 is sealing coat;
Fig. 2 for making the cylindrical base substrate of a slit bamboo or chopped wood in homocentric sphere base substrate episphere district with the ceramic layer green material, wraps the episphere part of concentric ceramic ball base substrate, 1 mould among the figure, and 2 is the homocentric sphere base substrate, and 3 is oxide isolation layer aluminium fine powder, and 4 is the cylindrical ceramic base substrate;
Fig. 3 for the homocentric sphere base substrate among Fig. 2 and mould reversal upset are placed, takes away mould 1, and the right cylinder ring surface is removed skim and processes pit or groove, processes in the above one deck sealing coat again.2 is the homocentric sphere base substrate among the figure, and 3 is oxide isolation layer aluminium fine powder, and 4 is the right cylinder green compact;
Fig. 4 is for making the situation behind the cylindrical base substrate of another slit bamboo or chopped wood.Figure Oxford gray district 2 is the homocentric sphere base substrate, and light gray zones 3 is oxide isolation layer aluminium fine powder, and 4 is two slit bamboo or chopped wood right cylinder green compact up and down;
Fig. 5 is the concentric ceramic ball of sintering after finishing, and the Dark grey district is pottery, and white area is the hollow part of concentric ceramic ball interlayer transcribed spacer and every one deck.
Embodiment:
As described in Figure, the invention discloses a kind of usefulness two slit bamboo or chopped woods with the right cylinder ceramic green of hollow sphere cavity, parcel concentric ceramic ball base substrate comes the method for sintered ceramic homocentric sphere, may further comprise the steps:
Step 5, use the same method and make another slit bamboo or chopped wood right cylinder, make it wrap another hemisphere of concentric ceramic ball base substrate, whole like this concentric ceramic ball base substrate just is divided into two slit bamboo or chopped woods and wraps with the right cylinder 4 of hollow sphere cavity, can be substantially indeformable when the thickness of right cylinder 4 will guarantee high temperature sintering;
Step 6, with the right cylinder 4 that the includes concentric ceramic ball base substrate sintering in the High Temperature Furnaces Heating Apparatus of packing into, below right cylinder, fill up again the ceramic green sheet of putting the same material of a slice when laying, the thickness of green sheet can not be too thin, and at some aluminum oxide fine sands of Ge Sa up and down, the impact of right cylinder 4 being shunk when alleviating high temperature sintering;
Step 7 behind the sintering, with two slit bamboo or chopped wood right cylinders 4 separately, is taken out the concentric ceramic ball, takes out the aluminum oxide fine powder 3 that has become loose from hollow part, and the sintering of concentric ceramic ball is namely accused and finished.
Can see from above-mentioned step, wrap concentric ceramic ball base substrate with the right cylinder of hollow sphere cavity after using the same material with ceramic layer to make two slit bamboo or chopped woods to close up and carry out sintering, just can go out indeformable indehiscent concentric ceramic ball by sintering.
The invention provides a kind of use makes two slit bamboo or chopped woods up and down with the green compact of the same material of concentric ceramic ball and wraps concentric ceramic ball base substrate with the right cylinder of hollow sphere cavity and carry out high temperature sintering goes out the concentric ceramic ball with sintering method; method and the approach of this technical scheme of specific implementation are a lot; the above only is the preferred embodiments of the invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. method that is used for the sintered ceramic homocentric sphere, the right cylinder with spherical hollow cavity that it is characterized in that adopting two slit bamboo or chopped woods up and down to make with the ceramic green material wraps concentric ceramic ball base substrate one sintering with the problem of the easy strain cracking of solution concentric ceramic ball.
2. design according to claim 1 is characterized in that its shape is cylindrical, regular prism shape and other shape.
3. according to claim 1, it is characterized in that its material is and the same material of concentric ceramic ball and other coefficient of expansion and its stupalith that approaches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110187247.5A CN102850058B (en) | 2011-06-30 | 2011-06-30 | Sintering method of ceramic concentric sphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110187247.5A CN102850058B (en) | 2011-06-30 | 2011-06-30 | Sintering method of ceramic concentric sphere |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102850058A true CN102850058A (en) | 2013-01-02 |
| CN102850058B CN102850058B (en) | 2014-03-26 |
Family
ID=47397100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110187247.5A Expired - Fee Related CN102850058B (en) | 2011-06-30 | 2011-06-30 | Sintering method of ceramic concentric sphere |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102850058B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115124355A (en) * | 2022-07-21 | 2022-09-30 | 新乡市固元陶瓷科技有限公司 | Method for burning large-size ceramic spheres in buried mode |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01192771A (en) * | 1988-01-26 | 1989-08-02 | Fujitsu Ltd | Supporting plate for calcination of ceramic substrate |
| JPH07223896A (en) * | 1994-02-08 | 1995-08-22 | Fuji Elelctrochem Co Ltd | Raw material smelter for production of single crystal by draw-up method |
| CN1126132A (en) * | 1995-01-06 | 1996-07-10 | 侯伟华 | Isostatic pressing method for ceramic powder |
| CN101115906A (en) * | 2005-02-04 | 2008-01-30 | 烷材料股份有限公司 | Composition and method for making a proppant |
| CN101332624A (en) * | 2007-06-29 | 2008-12-31 | 宝山钢铁股份有限公司 | Ceramic ball forming die and firming method |
-
2011
- 2011-06-30 CN CN201110187247.5A patent/CN102850058B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01192771A (en) * | 1988-01-26 | 1989-08-02 | Fujitsu Ltd | Supporting plate for calcination of ceramic substrate |
| JPH07223896A (en) * | 1994-02-08 | 1995-08-22 | Fuji Elelctrochem Co Ltd | Raw material smelter for production of single crystal by draw-up method |
| CN1126132A (en) * | 1995-01-06 | 1996-07-10 | 侯伟华 | Isostatic pressing method for ceramic powder |
| CN101115906A (en) * | 2005-02-04 | 2008-01-30 | 烷材料股份有限公司 | Composition and method for making a proppant |
| CN101332624A (en) * | 2007-06-29 | 2008-12-31 | 宝山钢铁股份有限公司 | Ceramic ball forming die and firming method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115124355A (en) * | 2022-07-21 | 2022-09-30 | 新乡市固元陶瓷科技有限公司 | Method for burning large-size ceramic spheres in buried mode |
| CN115124355B (en) * | 2022-07-21 | 2023-09-01 | 新乡市固元陶瓷科技有限公司 | Method for burying and burning large-size ceramic spheres |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102850058B (en) | 2014-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108675781A (en) | A kind of large area ferrite sintering process | |
| CN103862053A (en) | Metal powder tube forming die and metal powder tube preparation method | |
| CN102850058B (en) | Sintering method of ceramic concentric sphere | |
| CN204686013U (en) | A kind of burning boat improving annular NbFeB sintered distortion and crackle | |
| CN101559491B (en) | Integral molding die of large scale sintering porous cone pipe and isotropic molding method therewith | |
| CN107727475A (en) | Self-tipping type analog simulation tests test specimen processing mold and its operating method | |
| CN107379619A (en) | A kind of powder presser die and tabletting method for being easy to move back mould | |
| CN104276910A (en) | Process for forming burning restriction layer of explosive column of gas generating agent | |
| CN104399887B (en) | Precision casting method of back cover of spiral supercharging diffuser | |
| CN204075071U (en) | Oil cylinder casting sand mold | |
| CN202108994U (en) | Polyurethane drum type sealing ring | |
| CN103196940B (en) | Apparatus and method of eliminating edge effects of sinter pot test | |
| CN203184022U (en) | Device for eliminating experimental edge effect of sintering cup | |
| CN105170966B (en) | A kind of middle water-coating port and its making mould and preparation method | |
| CN105945258A (en) | Low-pressure fusible mold precise casting process | |
| Zych et al. | New investigation method of the permeability of ceramic moulds applied in the investment casting technology | |
| CN102850052A (en) | Method for solving cracking problem during sintering of ceramic concentric spheres | |
| CN203227819U (en) | Metal die for manufacturing gradient materials | |
| CN113084170B (en) | Friction block sintering mold suitable for automatic production and using method | |
| CN113172731B (en) | Quasi-temperature isostatic pressing method and die | |
| CN204830892U (en) | Zirconia porcelain block's high temperature sintering furnace for mouth rehabilitation | |
| CN201419243Y (en) | Integral uniform molding mould of large sintered porous taper pipe | |
| CN109551612B (en) | Isostatic pressing forming method and mould for refractory sagger | |
| CN102430716A (en) | Sand core manufacturing process for main body of valve body of multi-path valve | |
| CN202943783U (en) | Assembling die for shock insulation rubber support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20150630 |
|
| EXPY | Termination of patent right or utility model |