CN112430106A - Supporting body for ceramic sintering and preparation method thereof - Google Patents
Supporting body for ceramic sintering and preparation method thereof Download PDFInfo
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- CN112430106A CN112430106A CN202011378091.4A CN202011378091A CN112430106A CN 112430106 A CN112430106 A CN 112430106A CN 202011378091 A CN202011378091 A CN 202011378091A CN 112430106 A CN112430106 A CN 112430106A
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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Abstract
The invention discloses a carrier for ceramic sintering, comprising: the ceramic bearing substrate comprises a bearing substrate and a surface layer which is used for being in contact with ceramic in sintering, wherein a stress buffer layer is further arranged between the bearing substrate and the surface layer. The invention also discloses a preparation method of the carrier, which comprises the following steps: s1, paving 10-30% of the second mixture raw material into a mould; s2, paving the third mixture raw material with the volume of 20-40% on the second mixture raw material; s3, taking 55-75% of the first mixture raw material by volume and paving the first mixture raw material on the third mixture raw material in the step S2; s4, pressing the blank in a die under the high pressure of a 300t friction press; s5, drying the blank; and S6, placing the dried blank in the step S5 into a tunnel kiln or a shuttle kiln for burning, wherein the burning temperature is 1550 ℃, and the heat preservation time is 10 hours. The invention removes the sanding process, avoids the defects generated on the contact surface of the product, can cancel the grinding process procedure of the defects generated on the contact surface, can improve the product percent of pass and reduce the production cost.
Description
Technical Field
The invention relates to the technical field of ceramic sintering, in particular to a supporting body for ceramic sintering and a preparation method thereof.
Background
Because the temperature is as high as 1600-.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a supporting body for ceramic sintering, which is resistant to high temperature and does not react with ceramic in a high-temperature environment, and a preparation method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme: a carrier for ceramic sintering, comprising: the ceramic bearing substrate comprises a bearing substrate and a surface layer which is used for being in contact with ceramic in sintering, wherein a stress buffer layer is further arranged between the bearing substrate and the surface layer.
Preferably, the thickness of the bearing base layer accounts for 55-75% of the thickness of the whole bearing body, and the bearing base layer comprises a first mixture of 18-40% of mullite, 55-65% of acid-washed high-purity corundum sand and 8-15% of calcined kaolin in percentage by volume.
In the embodiment, the mullite is corundum-mullite, the high-temperature main crystal phase of the corundum-mullite brick is corundum and mullite, the corundum crystals are short columnar and barrel-shaped, and are not mutually interpenetrated and staggered in the refractory structure, and the mullite-staggered columnar crystals are embedded among the corundum crystals, so that the corundum crystals are effectively prevented from sliding, a stable structure is obtained, and the mullite-corundum brick is more stable in crystal structure, is more favorable for exerting the excellent performance of the mullite or the mullite and the corundum, and is favorable for improving and enhancing the high-temperature performance of the material.
Preferably, the surface layer is 2-5mm and the surface layer comprises a second mixture of 95-98% acid-washed high purity corundum sand and 2-5% calcined kaolin in volume percent.
Preferably, the stress buffer layer comprises a third mixture of 10-15% mullite, 65-95% acid-washed high purity corundum sand, and 5-15% calcined kaolin, by volume percent.
Preferably, the mullite comprises 50% of mullite of 35 meshes and 80 meshes in percentage by volume, and the acid-washed high-purity corundum sand comprises 50% of acid-washed high-purity corundum sand of 35 meshes and 100 meshes in percentage by volume.
Preferably, the acid-washed high-purity corundum sand is 80-150 meshes.
Preferably, the mullite comprises 50 percent of mullite of 80 meshes and 100 meshes in percentage by volume, and the acid-washed high-purity corundum sand comprises 50 percent of acid-washed high-purity corundum sand of 80 meshes and 100 meshes in percentage by volume.
Preferably, the invention also discloses a preparation method of the carrier for ceramic sintering, which comprises the following steps:
s1, adopting a feeding hopper to take 10-30% of second mixture raw materials by volume and paving the second mixture raw materials into a mould;
s2, adopting a feeding hopper to take a third mixture raw material with the volume of 20-40% and paving the third mixture raw material on the second mixture raw material;
s3, taking 55-75% of the first mixture raw material by volume by adopting a feeding hopper and spreading the first mixture raw material on the third mixture raw material in the step S2;
s4, pressing the blank in a die under the high pressure of a 300t friction press;
s5, putting the blank in the step S4 into a dryer at 40-100 ℃ for drying, wherein the initial temperature of the dryer is lower than 40 ℃, the temperature is increased at the speed of 5-8 ℃/h, the highest temperature is not higher than 120 ℃, and the drying is carried out for 48 h;
and S6, placing the dried blank in the step S5 into a tunnel kiln or a shuttle kiln for burning, wherein the burning temperature is 1550 ℃, and the heat preservation time is 10 hours.
Compared with the prior art, the invention has the advantages that: the present invention eliminates the sanding process, avoids the defects generated on the contact surface of the product, can cancel the grinding process procedure of the defects generated on the contact surface, can improve the product percent of pass, and reduces the production cost. Compared with the prior art, the production efficiency can be improved by 50%, the product percent of pass can be improved by 20%, and meanwhile, the invention has the advantages of high temperature resistance, chemical erosion resistance, oxidation resistance, good thermal stability, good thermal shock resistance, long service life and the like.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Illustration of the drawings:
1. a load bearing substrate; 2. a surface layer; 3. and the stress buffer layer.
Detailed Description
The present invention will be described in further detail with reference to the drawings and specific embodiments, and it is to be understood that the described embodiments are only a few embodiments of the present invention, rather than the entire embodiments, and that all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive work fall within the scope of the present invention.
As shown in fig. 1, the carrier for ceramic sintering of the present embodiment includes: the ceramic bearing substrate comprises a bearing substrate 1 and a surface layer 2 which is used for being in contact with ceramic in sintering, wherein a stress buffer layer 3 is further arranged between the bearing substrate 1 and the surface layer 2.
The thickness of the bearing base layer 1 accounts for 55-75% of the thickness of the whole bearing body, and the bearing base layer 1 comprises a first mixture of 18-40% of mullite, 55-65% of acid-washed high-purity corundum and 8-15% of calcined kaolin in percentage by volume.
Wherein the surface layer 2 is 2-5mm, and the surface layer 2 comprises a second mixture of 95-98% acid-washed high purity corundum sand and 2-5% calcined kaolin by volume percent.
Wherein the stress buffer layer 3 comprises a third mixture of 10-15% of mullite, 65-95% of acid-washed high-purity corundum and 5-15% of calcined kaolin in percentage by volume.
Wherein the mullite comprises 50 percent of mullite of 35 meshes and 80 meshes respectively according to volume percentage, and the acid-washed high-purity corundum sand comprises 50 percent of acid-washed high-purity corundum sand of 35 meshes and 100 meshes respectively according to volume percentage.
Wherein the acid-washed high-purity corundum sand is 80-150 meshes.
Wherein the mullite comprises 50 percent of mullite of 80 meshes and 100 meshes according to volume percentage, and the acid-washed high-purity corundum sand comprises 50 percent of acid-washed high-purity corundum sand of 80 meshes and 100 meshes according to volume percentage.
The invention also discloses a preparation method of the supporting body for ceramic sintering, which comprises the following steps:
s1, adopting a feeding hopper to take 10-30% of second mixture raw materials by volume and paving the second mixture raw materials into a mould;
s2, adopting a feeding hopper to take a third mixture raw material with the volume of 20-40% and paving the third mixture raw material on the second mixture raw material;
s3, taking 55-75% of the first mixture raw material by volume by adopting a feeding hopper and spreading the first mixture raw material on the third mixture raw material in the step S2;
s4, pressing the blank in a die under the high pressure of a 300t friction press;
s5, putting the blank in the step S4 into a dryer at 40-100 ℃ for drying, wherein the initial temperature of the dryer is lower than 40 ℃, the temperature is increased at the speed of 5-8 ℃/h, the highest temperature is not higher than 120 ℃, and the drying is carried out for 48 h;
and S6, placing the dried blank in the step S5 into a tunnel kiln or a shuttle kiln for burning, wherein the burning temperature is 1550 ℃, and the heat preservation time is 10 hours.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (8)
1. A carrier for ceramic sintering, comprising: the ceramic bearing substrate comprises a bearing substrate (1) and a surface layer (2) which is used for being in contact with ceramic in sintering, wherein a stress buffer layer (3) is further arranged between the bearing substrate (1) and the surface layer (2).
2. The carrier for ceramic sintering of claim 1 wherein: the thickness of the bearing base layer (1) accounts for 55-75% of the thickness of the whole bearing body, and the bearing base layer (1) comprises a first mixture of 18-40% of mullite, 55-65% of acid-washed high-purity corundum and 8-15% of calcined kaolin in percentage by volume.
3. The carrier for ceramic sintering of claim 1 wherein: the surface layer (2) is 2-5mm, and the surface layer (2) comprises a second mixture of 95-98% acid-washed high-purity corundum sand and 2-5% calcined kaolin in percentage by volume.
4. The carrier for ceramic sintering of claim 1 wherein: the stress buffer layer (3) comprises a third mixture of 10-15% of mullite, 65-95% of acid-washed high-purity corundum and 5-15% of calcined kaolin in percentage by volume.
5. The carrier for ceramic sintering of claim 2 wherein: the mullite comprises 50 percent of mullite of 35 meshes and 80 meshes according to volume percentage, and the acid-washed high-purity corundum sand comprises 50 percent of acid-washed high-purity corundum sand of 35 meshes and 100 meshes according to volume percentage.
6. A carrier for ceramic sintering as claimed in claim 3 wherein: the acid-washed high-purity corundum sand is 80-150 meshes.
7. The carrier for ceramic sintering of claim 4 wherein: the mullite comprises 50 percent of mullite of 80 meshes and 100 meshes according to volume percentage, and the acid-washed high-purity corundum sand comprises 50 percent of acid-washed high-purity corundum sand of 80 meshes and 100 meshes according to volume percentage.
8. A method of making a carrier for ceramic sintering as claimed in any one of claims 1 to 7, comprising the steps of:
s1, adopting a feeding hopper to take 10-30% of second mixture raw materials by volume and paving the second mixture raw materials into a mould;
s2, adopting a feeding hopper to take a third mixture raw material with the volume of 20-40% and paving the third mixture raw material on the second mixture raw material;
s3, taking 55-75% of the first mixture raw material by volume by adopting a feeding hopper and spreading the first mixture raw material on the third mixture raw material in the step S2;
s4, pressing the blank in a die under the high pressure of a 300t friction press;
s5, putting the blank in the step S4 into a dryer at 40-100 ℃ for drying, wherein the initial temperature of the dryer is lower than 40 ℃, the temperature is increased at the speed of 5-8 ℃/h, the highest temperature is not higher than 120 ℃, and the drying is carried out for 48 h;
and S6, placing the dried blank in the step S5 into a tunnel kiln or a shuttle kiln for burning, wherein the burning temperature is 1550 ℃, and the heat preservation time is 10 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011378091.4A CN112430106B (en) | 2020-11-30 | 2020-11-30 | Supporting body for ceramic sintering and preparation method thereof |
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| CN202011378091.4A CN112430106B (en) | 2020-11-30 | 2020-11-30 | Supporting body for ceramic sintering and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105698542A (en) * | 2016-03-21 | 2016-06-22 | 武汉理工大学 | Lithium battery high-temperature corrosion resistance laminar saggar and preparation method thereof |
| CN108046816A (en) * | 2017-12-25 | 2018-05-18 | 江苏三恒高技术窑具有限公司 | A kind of high-heat resistance shock resistant saggar and preparation method thereof |
| CN207635874U (en) * | 2017-09-29 | 2018-07-20 | 浙江科奥陶业有限公司 | A kind of high purity aluminium oxide silicon carbide compound load bearing board |
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2020
- 2020-11-30 CN CN202011378091.4A patent/CN112430106B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88101391A (en) * | 1987-03-16 | 1988-10-05 | 品川白炼瓦株式会社 | Two layered refractory plate |
| CN101045625A (en) * | 2007-03-13 | 2007-10-03 | 广东风华高新科技集团有限公司 | Manufacturing method of composite ceramic plate and composit ceramic |
| KR20090127805A (en) * | 2008-06-09 | 2009-12-14 | 가부시키가이샤 노리타께 캄파니 리미티드 | Sagger for manufacturing positive electrode active material of lithium ion battery, and manufacturing method thereof |
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