CN102172974B - Special die for long bar ceramic blank bottom-pressing liquid lifting casting formation and preparation method for producing long bar ceramic by using same - Google Patents
Special die for long bar ceramic blank bottom-pressing liquid lifting casting formation and preparation method for producing long bar ceramic by using same Download PDFInfo
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- CN102172974B CN102172974B CN 201110040058 CN201110040058A CN102172974B CN 102172974 B CN102172974 B CN 102172974B CN 201110040058 CN201110040058 CN 201110040058 CN 201110040058 A CN201110040058 A CN 201110040058A CN 102172974 B CN102172974 B CN 102172974B
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- 239000000919 ceramic Substances 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000005266 casting Methods 0.000 title abstract description 5
- 238000003825 pressing Methods 0.000 title abstract description 4
- 230000015572 biosynthetic process Effects 0.000 title abstract 2
- 239000002002 slurry Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000005245 sintering Methods 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 23
- 238000000280 densification Methods 0.000 claims description 4
- 238000001879 gelation Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000010923 batch production Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000004512 die casting Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000462 isostatic pressing Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004018 waxing Methods 0.000 description 1
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- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a special die for long bar ceramic blank bottom-pressing liquid lifting casting formation and a preparation method for producing long bar ceramic by using the same. The die is characterized by consisting of an integrated circular base, a slurry barrel, an integrated fastening ring and a multilayer half-hole template assembly, wherein the integrated circular base is provided with a groove; the outside diameter of the slurry barrel is in dynamic fit with the inside diameter of the groove of the base, and the slurry barrel consists of two semicircles; the outside diameter of the integrated fastening ring is in dynamic fit with the inside diameter of the slurry barrel, and the interior of the integrated fastening ring has taper; and the external circle taper of the multilayer half-hole template assembly is as same as the inner taper of the fastening ring. The slurry barrel is arranged on the circular base through the groove to form a female die for accommodating slurry, and multilayer half-hole templates are combined and then plugged into the fastening ring to form a fixed male die with a plurality of through holes. The method is characterized by comprising the following steps of: 1) preparing the slurry; 2) assembling the die; 3) casting with a bottom-pressing liquid lifting method; 4) curing gel, and stripping; and 5) dehydrating, drying and sintering. The die is simple, and the utilization rate of raw materials is high; and by using the method, batch production of long bar ceramic shaft blanks can be realized.
Description
Technical field
The invention belongs to Inorganic Non-metallic Materials particular manufacturing craft and preparation method thereof field, be specifically related to a kind of long bar shaped ceramic base substrate press-down type and rise liquid and annotate and to congeal into the type particular manufacturing craft and to utilize the preparation method of the long bar-shaped pottery of this mould production.
Background technology
For slender rod shaped ceramic body, production method commonly used at present is mainly plastic mud material extrustion process and wax material slurry hot die-casting method, when size is big, also can use the isostatic cool pressing method.
Pug extrustion process mechanization degree is higher, relatively is fit to large-scale production, as long as control mud extruder mouth bore and segment length well, just can obtain dimensional uniformity ceramic body preferably.Its key technology is to join to practice the pug with high solid loading and good plastic deformation ability.But for high-performance ceramic, for guaranteeing to obtain microstructure, often need to use ultra-fine ridge powder, then join and practice the suitable difficulty of pug with suitable plasticity, must add water and the organic matters such as plasticizer, bonding agent of high level, so moulded pottery not yet put in a kiln to bake density is relatively low, need to improve sintering temperature and could obtain finer and close porcelain body, not only increase energy consumption and to the requirement of kiln refractory material, also can make grain growth, reduce material property.
Though hot die-casting method has many key technologies to grasp, technology is relative with the equipment that matches ripe at present, and application is also very wide.But since wax material slurry be pressed into metal die after the cooled and solidified process very fast, hot die-casting method is difficult to a die casting and goes out very little and the elongated base substrate that draw ratio is very big of sectional area, for the bigger superfine ceramic powder of specific area, the wax material of preparation high solid loading and good castability slurry difficulty is bigger simultaneously.The greatest problem that exists in the hot die-casting molding actual production is that de-waxing can cause than the serious environmental pollution, and its production procedure simultaneously is longer, and production efficiency is relatively low, and energy consumption is higher.
For large-sized class pottery, can adopt cold isostatic compaction.This technology gained blank structure is even, and it is good to sinter the porcelain material into, the density height.But because the mould restriction, its excellent base dimensional accuracy and surface quality are difficult to meet the demands, and need further machining could obtain the ceramic shaft base substrate of required size.Simultaneously, this technological equipment investment expense is big, the production cost height, and production efficiency is low, is not suitable for the suitability for industrialized production diameter less than the ceramic shaft base substrate of Φ 10mm.
Earlier 1990s, organic slip gel-casting forming technique (U.S Patent 4894194 of ceramic body has successively invented in U.S. Oak Ridge National Key Laboratory, 1990) and aqueous slurries gel-casting forming technique (U.S Patent5028362,1991).Comparatively speaking, aqueous slurries is solvent with water, not only cost is low, low in the pollution of the environment, and because the invention of multiple efficient water soluble dispersant application in recent years, be easy to make the slip of high ceramic powder volume component, therefore get more and more people's extensive concerning, and obtained successful Application in some field.This technology can form the organic monomer of gelinite and crosslinking agent and water and be mixed with premixed liquid, with be mixed with ceramic slurry after ceramic powder mixes, be poured in the mould of ne-leakage and make it in-situ polymerization under certain condition, form the gelinite of cross key structure and make the ceramic body typing, therefore applicable to the precise forming of the ceramic body of various complexity and simple shape.But the difficulty for preparing slender rod shaped ceramic body with this technology is that when slip casting was gone into the closed die lumen pore, gas was blocked and can't be discharged by slip easily in the cavity hole, and the result can stay gas hole defect and scrap in base substrate.Simultaneously, only to pour into a mould the obvious production efficiency of product very low at every turn, can not satisfy industrial production requirement.
Summary of the invention
When the objective of the invention is to overcome slip and annotating the slender rod shaped ceramic body of the type that congeals in the cavity hole gas blocked and can't discharge by slip easily, the problem that in base substrate, stays gas hole defect and scrap, provide a kind of each moulding many products, enhance productivity, satisfy long bar shaped ceramic base substrate press-down type that suitability for industrialized production requires and rises liquid and annotate the type particular manufacturing craft and utilize this mould production to grow the preparation method of bar-shaped pottery of congealing into.
The present invention is achieved by the following technical solution:
Be that a kind of long bar shaped ceramic base substrate press-down type rises liquid and annotates the type particular manufacturing craft that congeals into, it is characterized in that by the monoblock type cup dolly that is provided with groove, the groove internal diameter of external diameter and the base slip tube of being formed by two semicircles movingly, external diameter and slip tube internal diameter inside movingly have the monoblock type dead ring of 5～10 ° of taperings, the sandwich tape half casement plate that the cylindrical tapering is identical with the dead ring internal taper is formed, the slip tube is installed in the former of forming charge slurry usefulness on the cup dolly by groove, sandwich tape half casement plate is filled in dead ring after being combined into sandwich tape half casement plate assembly, forms the fixing formpiston that has a plurality of through holes.
Each parts of mould select for use the airtight durable materials of rigidity such as metal material such as steel, aluminium alloy, copper alloy to make.
A kind of method of utilizing the described mould of claim 1 to prepare long bar-shaped pottery is characterized in that comprising the steps:
1) preparation slip
But according to technological requirement preparation gelation ceramic slurry;
2.) matched moulds
Earlier the slip tube is embedded base by groove, form the former of the charge slurry usefulness of a lower seal, fill in dead ring after then sandwich tape half casement plate being combined into sandwich tape half casement plate assembly, become the fixing formpiston that has a plurality of through holes;
3) press-down type rises the cast of liquid method
Earlier in former, pour load weighted ceramic slurry into, lift the formpiston that assembles then and slowly sink to reposefully in this former that fills ceramic slurry, until on earth.In this process, the ceramic slurry in the former relatively slowly rises and enters in each hole of formpiston, in order to make liquid level unanimity in each hole, stops for 3～10 seconds before can be at the bottom of formpiston is pressed onto tin, waits to be pressed into the end in each hole behind the liquid level levelling again;
4) gel solidification, the demoulding
Slurry gel carries out stripping operation after solidifying, and withdraws from base earlier, opens the slip tube again, and directly integral body ejects the sandwich tape half casement plate assembly that contains the gel base substrate from dead ring, namely obtains the long bar-shaped ceramic gel base substrates of many equal lengths;
5) dehydrate, sintering
The ceramic gel base substrate that takes out namely makes long bar-shaped pottery through dehydrating and sintering densification.
The present invention can be used for aqueous slurries and annotates the industrialized mass production of coagulating the long bar-shaped pottery of method moulding, can obtain the long bar-shaped pottery of high-quality.Compare with other forming method, its advantage mainly shows as:
1. than pug extrustion process green body quality height, can obtain the higher base substrate of bulk density, reduce the sintering densification temperature.
2. more energy-saving and cost-reducing than hot die-casting method, environmental pollution is little, and the operation process is simplified, and can be suitable for the moulding of superfine powder, is conducive to obtain the aplitic texture porcelain body;
3. lower than isostatic pressing method equipment investment expense, the production efficiency height can directly obtain the base substrate that high dimensional accuracy need not further machining, does not produce dust pollution;
Adopt special combination mould of the present invention to carry out rising liquid and annotate operation with fixed attention, can remedy aqueous slurries and annotate the problem that the method for coagulating manual operations homogeneity of product is not easy to guarantee.Press-down type rises the liquid notes, and the method mould is simple with fixed attention, the raw material availability height; Utilize the inventive method, can realize the efficient mass production of long bar-shaped ceramic shaft base substrate, can obtain the ceramic shaft gel base substrate that tens even hundreds of prop up equal length at every turn, quantity and size all can be determined by the mould of designed manufacturing.Simultaneously, to can be used for sectional area be 1mm to this method
2The notes of above all size long bar shaped ceramic base substrate coagulate precise forming, and the design of the improvement by mould, can realize the moulding of round, square, polygonal, complicated odd-shaped cross section long bar shaped ceramic base substrate, and good practical value is arranged.
Description of drawings
Fig. 1 is the structural representation of particular manufacturing craft of the present invention;
Fig. 2 is that the A of Fig. 1 is to view.
As shown in FIG.: 1 base; 2 slip tubes; 3 dead rings; 4 are with half casement plate;
The specific embodiment
Be that example is further elaborated the present invention to make Y-TZP pottery circular shaft base below.
Making step is as follows:
1) preparation slip
But according to technological requirement preparation gelation Y-TZP ceramic slurry;
2.) matched moulds
3) press-down type rises the cast of liquid method
Slip is poured into along inwall in the former that assembles, lifted formpiston then and slowly sink in the former slip, about 5s that pauses when arriving the 5mm left and right sides, bottom sinks to the end then, and slip is full of each hole in the formpiston from bottom to top.
4) gel solidification, the demoulding
At room temperature place 30min, slurry gel solidifies.Withdraw from base 1 earlier, open slip tube 2 again, the direct whole sandwich tape half casement plate assembly that contains the gel base substrate that ejects from dead ring 3 then, again each layer is with half casement plate 4 to peel away one by one, cut surperficial vapo(u)r barrier with blade, namely obtain 37 any surface finish, internal structure evenly, be of a size of the Y-TZP pottery circular shaft base gelinite of Φ 6mm * 110mm.
5) dehydrate, sintering
The ceramic gel base substrate that takes out namely makes the long bar-shaped pottery of circular shaft Y-TZP through dehydrating and sintering densification.
The tapering of dead ring 3 of the present invention is can be according to the design technology choose reasonable between 5 °～10 °.
Claims (2)
1. a long bar shaped ceramic base substrate press-down type rises liquid and annotates the type particular manufacturing craft that congeals into, it is characterized in that by the monoblock type cup dolly that is provided with groove, the groove internal diameter of external diameter and the base slip tube of being formed by two semicircles movingly, external diameter and slip tube internal diameter inside movingly have the monoblock type dead ring of 5～10 ° of taperings, the sandwich tape half casement plate assembly that the cylindrical tapering is identical with the dead ring internal taper is formed, the slip tube is installed in the former of forming charge slurry usefulness on the cup dolly by groove, sandwich tape half casement plate is filled in dead ring after being combined into sandwich tape half casement plate assembly, forms the fixing formpiston that has a plurality of through holes.
2. a method of utilizing the described mould of claim 1 to prepare long bar-shaped pottery is characterized in that comprising the steps:
1) preparation slip
But according to technological requirement preparation gelation ceramic slurry;
2.) matched moulds
Earlier the slip tube is embedded base by groove, form the former of the charge slurry usefulness of a lower seal, fill in dead ring after then sandwich tape half casement plate being combined into sandwich tape half casement plate assembly, become the fixing formpiston that has a plurality of through holes;
3) press-down type rises the cast of liquid method
Earlier in former, pour load weighted ceramic slurry into, lifting the formpiston that assembles then slowly sinks in this former that fills ceramic slurry reposefully, until on earth, in this process, ceramic slurry in the former relatively slowly rises and enters in each hole of formpiston, in order to make liquid level unanimity in each hole, stopped for 3～10 seconds before can be at the bottom of formpiston is pressed onto tin, wait to be pressed into the end in each hole behind the liquid level levelling again;
4) gel solidification, the demoulding
Slurry gel carries out stripping operation after solidifying, withdraw from base earlier, open the slip tube again, directly integral body ejects the sandwich tape half casement plate assembly that contains the gel base substrate from dead ring, again each layer is with half casement plate to peel away one by one, cut surperficial vapo(u)r barrier with blade, namely obtain the long bar-shaped ceramic gel base substrate of many equal lengths;
5) dehydrate, sintering
The ceramic gel base substrate that takes out namely makes long bar-shaped pottery through dehydrating and sintering densification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110040058 CN102172974B (en) | 2011-02-18 | 2011-02-18 | Special die for long bar ceramic blank bottom-pressing liquid lifting casting formation and preparation method for producing long bar ceramic by using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110040058 CN102172974B (en) | 2011-02-18 | 2011-02-18 | Special die for long bar ceramic blank bottom-pressing liquid lifting casting formation and preparation method for producing long bar ceramic by using same |
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| CN102172974A CN102172974A (en) | 2011-09-07 |
| CN102172974B true CN102172974B (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110040058 Active CN102172974B (en) | 2011-02-18 | 2011-02-18 | Special die for long bar ceramic blank bottom-pressing liquid lifting casting formation and preparation method for producing long bar ceramic by using same |
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| CN110385773B (en) * | 2019-08-29 | 2024-05-17 | 济源市东方自动化设备有限公司 | Ceramic rod cage type pressing die assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5028362A (en) * | 1988-06-17 | 1991-07-02 | Martin Marietta Energy Systems, Inc. | Method for molding ceramic powders using a water-based gel casting |
| CN1370758A (en) * | 2001-02-22 | 2002-09-25 | 北京航空材料研究院 | Molding process of water-thinned ceramic slurry gel |
| CN101293774A (en) * | 2007-04-29 | 2008-10-29 | 福建省智胜矿业有限公司 | Drying method for long bar shaped ceramic base substrate |
| CN101733818A (en) * | 2009-12-17 | 2010-06-16 | 中国核动力研究设计院 | Molding method and special die for manufacturing ceramic thin-walled tubes |
-
2011
- 2011-02-18 CN CN 201110040058 patent/CN102172974B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5028362A (en) * | 1988-06-17 | 1991-07-02 | Martin Marietta Energy Systems, Inc. | Method for molding ceramic powders using a water-based gel casting |
| CN1370758A (en) * | 2001-02-22 | 2002-09-25 | 北京航空材料研究院 | Molding process of water-thinned ceramic slurry gel |
| CN101293774A (en) * | 2007-04-29 | 2008-10-29 | 福建省智胜矿业有限公司 | Drying method for long bar shaped ceramic base substrate |
| CN101733818A (en) * | 2009-12-17 | 2010-06-16 | 中国核动力研究设计院 | Molding method and special die for manufacturing ceramic thin-walled tubes |
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| CN102172974A (en) | 2011-09-07 |
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Denomination of invention: The utility model relates to a special mould for downward pressure rising liquid injection molding of long rod-shaped ceramic body and a preparation method for producing long rod-shaped ceramics with the mold Effective date of registration: 20201030 Granted publication date: 20130710 Pledgee: Zibo Xinrun financing Company limited by guarantee Pledgor: SHANDONG ULTRAMING FINE CERAMICS Co.,Ltd. Registration number: Y2020980007378 |
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Date of cancellation: 20211122 Granted publication date: 20130710 Pledgee: Zibo Xinrun financing Company limited by guarantee Pledgor: SHANDONG ULTRAMING FINE CERAMICS Co.,Ltd. Registration number: Y2020980007378 |
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Denomination of invention: The invention relates to a special die for down pressing liquid rising injection molding of long rod-shaped ceramic body and a preparation method for producing long rod-shaped ceramics by using the die Effective date of registration: 20211221 Granted publication date: 20130710 Pledgee: Zibo Xinrun financing Company limited by guarantee Pledgor: SHANDONG ULTRAMING FINE CERAMICS Co.,Ltd. Registration number: Y2021980015638 |
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Date of cancellation: 20220930 Granted publication date: 20130710 Pledgee: Zibo Xinrun financing Company limited by guarantee Pledgor: SHANDONG ULTRAMING FINE CERAMICS Co.,Ltd. Registration number: Y2021980015638 |
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