CN1040851C - Porous ceramic shaping method - Google Patents
Porous ceramic shaping method Download PDFInfo
- Publication number
- CN1040851C CN1040851C CN 92114511 CN92114511A CN1040851C CN 1040851 C CN1040851 C CN 1040851C CN 92114511 CN92114511 CN 92114511 CN 92114511 A CN92114511 A CN 92114511A CN 1040851 C CN1040851 C CN 1040851C
- Authority
- CN
- China
- Prior art keywords
- wax
- porous ceramics
- wax ball
- ball
- mould
- 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.)
- Expired - Fee Related
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000007493 shaping process Methods 0.000 title claims description 7
- 239000001993 wax Substances 0.000 claims abstract description 47
- 239000010721 machine oil Substances 0.000 claims abstract description 7
- 239000012170 montan wax Substances 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 239000012188 paraffin wax Substances 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 230000004927 fusion Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 2
- 239000007924 injection Substances 0.000 claims 2
- 239000012943 hotmelt Substances 0.000 claims 1
- 241001453445 Acalypha rhomboidea Species 0.000 abstract 5
- 229910010293 ceramic material Inorganic materials 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000011214 refractory ceramic Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
The present invention relates to a moulding method of a porous ceramic article, in which wax balls are taken as mould cores for moulding the porous ceramics. The wax balls are made by adding machine oil into the mixture of paraffin wax and montan wax to prepare a wax ball batch and pouring the melted batch into a mould to mould wax ball mould cores arranged in order on a plane. The monolithic wax ball mould cores are alternately arranged and put into the mould of the porous ceramic article, ceramic material slurry is poured into the mould, the ceramic material slurry is dried at the sintering point of the wax balls and heated at a temperature above the melting point of the wax balls to melt the wax balls and obtain the porous ceramic body, and the ceramic body is put into a sintering furnace to be sintered into a finished product.
Description
The present invention relates to a kind of forming method of making the porous ceramics that the refractory ceramics filter uses, belong to Inorganic Non-metallic Materials industry.
Manufacture method about the refractory ceramics filter, the domestic and foreign literature report is a lot, domesticly also begin to make this product, but its basic forming method all is with the flex foam coring, soak with the ceramic powders finish mix and starch, after treating that moisture evaporation falls in the slip, improve temperature again foamed plastics is burnt, finally obtain the foamed ceramics of foamed plastics shape.There is following problem in this method, and there is cloth hole inequality in the macropore foamed plastics that is promptly adopted, the shortcoming of the little and blind hole in hole, the finished product made from its coring; The vertical section porous, then hole is relatively poor on the cross section, and the part blind hole is arranged, thereby influences filter effect.The product quality of this ceramic filter is subjected to technical process, and the foamed plastics quality influence is bigger, so that cannot say for sure to demonstrate,prove stabilized quality in mass industrialized production.And foamed plastics burning volatile matter has penetrating odor, influences operating personnel's health.
Task of the present invention is the problem that exists at above-mentioned prior art, invent a kind of new porous ceramic shaping method, use the wax coring, its aperture is not subjected to the restriction of foamed plastics quality, can make large aperture (diameter is greater than 2mm) artificially, the porous ceramics that the porosity is evenly distributed, the wax ball batch of making core is recyclable, recycles.
The characteristics of porous ceramic shaping method of the present invention are with the core of wax as porous ceramic shaping, requirement to wax is under the condition that guarantees certain rigidity, and certain plasticity is arranged, and used wax is the mixture of paraffin and montan wax, add No. 20 machine oil again and be in harmonious proportion, its compound method is as follows:
Paraffin 80～90%
Montan wax 20～10%
More than the gross weight of two kinds of waxes be 100%, adding 5～20% No. 20 machine oil blendings in addition evenly becomes wax ball batch, in the above-mentioned formula range, changes the rigidity that the consumption of montan wax can be regulated wax ball batch; The plasticity that the consumption of variation machine oil can be regulated wax ball batch.
According to the instructions for use of porous ceramics, determine the diameter and the arrangement regulation of wax ball, the size dimension of porous ceramics piece according to these parameters, manufactures and designs wax ball-type core mould and porous ceramics blank forming mould; Pour the fusion of wax ball batch into wax ball forming mould, be shaped to and arrange orderly wax ball-type core in the plane, each wax ball is connected to each other at the position, point of contact; The cooling rear demoulding, become blocks of wax ball-type core, be placed in the porous ceramic shaping mould this kind wax ball-type core is staggered from level to level, make the space part of the top of a vollyball facing to next vollyball, become the space and arrange orderly porous ceramics core, ceramic slurry is filled with core, and be placed on the following oven dry of wax ball softening temperature, be warmed up to the above temperature of wax ball fusing point then, the fusion of wax ball is reclaimed, remaining porous ceramics base substrate places sintering furnace to sinter the pore size homogeneous into base substrate, and in the space equally distributed porous ceramics.
Advantage of the present invention is: can make the pore size homogeneous, the porous ceramics that is evenly distributed, and its pore size and arrangement regulation can design and produce in advance exactly according to instructions for use, can make the product of large aperture (diameter is greater than 2mm) artificially, product specification and quality are controlled easily, the wax ball batch of making core can recycling use, this can reduce product cost, porous ceramic filter with this method moulding, be fit to filtering molten metal, especially the more foundry goods of heavy castings or non-metallic inclusion can obviously improve casting quality.
Below be embodiments of the invention:
Get 90% paraffin; 10% montan wax mixes, and as 100%, adds No. 20 machine oil blending of 5% and is wax ball batch.Make wax ball mould in advance, design wax bulb diameter is 12mm, and arrangement mode is a square formation 13 * 13.Pouring the wax ball batch of fusion into wax ball die for molding is the orderly wax ball-type core of planar alignment, the orderly wax ball-type core of planar alignment of the slices of forming is placed on staggered putting in the porous ceramics mould, use lower platen with suitable pressure fixing, inject ceramic slurry, drying is 8 hours in 50 ℃ environment; Heating 2 hours in 110 ℃ environment is again fallen the wax nodularization and is reclaimed, and obtains the porous ceramics semi-finished product, and these semi-finished product behind the sintering, are promptly obtained porous ceramics in sintering furnace.
Claims (3)
1. the forming method of a porous ceramics is characterized in that:
(1) with the core of wax ball as the moulding porous ceramics, used wax is the mixture of paraffin and montan wax, and adds No. 20 machine oil mediations, and its compound method is as follows:
Paraffin 80～90%
Montan wax 20～10%
More than two kinds of wax sums be 100%, add 5～20% No. 20 machine oil in addition, blending is a wax ball batch evenly;
(2) according to the instructions for use of porous ceramics, decision wax ball size, the size of arrangement regulation and porous ceramics piece, manufacture and design wax ball-type core mould and porous ceramics blank forming mould according to above requirement, pour the fusion of wax ball batch into wax ball-type core mould, be shaped to and arrange orderly wax ball-type core in the plane, each wax ball is connected to each other at the position, point of contact, behind the cooling demoulding, make blocks of wax ball-type core, it is placed in the porous ceramic shaping mould according to instructions for use of moulding porous ceramics is staggered from level to level, make the space part of the top of a vollyball facing to next vollyball, form the porous ceramics core that spacial ordering is arranged, ceramic slurry is filled core, and place the following oven dry of wax ball softening temperature, be warmed up to the above temperature of wax ball fusing point then, the fusion of wax ball is reclaimed, and remaining porous ceramics base substrate places sintering furnace to be sintered to the porous ceramics finished product again.
2. the forming method of porous ceramics according to claim 1, the core baking temperature that it is characterized in that described injection ceramic slurry is 50 ℃, be 8 hours drying time.
3. the forming method of porous ceramics according to claim 1 is characterized in that the core of described injection ceramic slurry, and adding the temperature that hot melt falls wax ball-type core is 110 ℃, and be 2 hours heat time heating time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114511 CN1040851C (en) | 1992-12-18 | 1992-12-18 | Porous ceramic shaping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114511 CN1040851C (en) | 1992-12-18 | 1992-12-18 | Porous ceramic shaping method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1088148A CN1088148A (en) | 1994-06-22 |
| CN1040851C true CN1040851C (en) | 1998-11-25 |
Family
ID=4946968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92114511 Expired - Fee Related CN1040851C (en) | 1992-12-18 | 1992-12-18 | Porous ceramic shaping method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1040851C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041993C (en) * | 1993-08-26 | 1999-02-10 | 胡小弟 | Method for forming cellular ceramic filter |
| CN1080610C (en) * | 1997-01-14 | 2002-03-13 | 邹永钦 | Method of manufacturing air-permeable heat exchange element |
| CN100351062C (en) * | 2005-04-20 | 2007-11-28 | 陕西科技大学 | Fast shaping method of coramic component port |
| CN100464914C (en) * | 2007-10-12 | 2009-03-04 | 西北有色金属研究院 | Subsequent processing method of metal fiber porous material |
| EP2390307A1 (en) * | 2010-05-27 | 2011-11-30 | Corning Incorporated | Porous ceramic processing using prilled wax and non-ionic surfactant |
| CN103068771B (en) * | 2010-08-19 | 2016-01-06 | 日立金属株式会社 | The manufacture method of ceramic honeycomb structural body |
| CN103410530B (en) * | 2013-07-24 | 2015-09-16 | 中南大学 | Tunnel backing electric heating dewaxing pore-creating draining and heat supply means to prevent freezing |
| DE102018205588A1 (en) * | 2018-04-12 | 2019-10-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for producing a coiled body |
| CN111821738A (en) * | 2020-08-18 | 2020-10-27 | 烟台核晶陶瓷新材料有限公司 | Novel ceramic filter plate and preparation method thereof |
-
1992
- 1992-12-18 CN CN 92114511 patent/CN1040851C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1088148A (en) | 1994-06-22 |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |