CN102167601A - Corundum-mullite burn-bearing board having high fineness - Google Patents
Corundum-mullite burn-bearing board having high fineness Download PDFInfo
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- CN102167601A CN102167601A CN2010105962334A CN201010596233A CN102167601A CN 102167601 A CN102167601 A CN 102167601A CN 2010105962334 A CN2010105962334 A CN 2010105962334A CN 201010596233 A CN201010596233 A CN 201010596233A CN 102167601 A CN102167601 A CN 102167601A
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- mullite
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- bearing board
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Abstract
The invention relates to the refractory material field and especially relates to a corundum-mullite burn-bearing board having high fineness. The corundum-mullite burn-bearing board having high fineness comprises a corundum-mullite substrate and a coating thereon. The coating is coated with a prepared slurry which is prepared from 0.5 to 2.6 parts of aluminium oxide micro-powder and 1 part of silica sol. Purity of the aluminium oxide micro-powder is more than 99% and granularity is less than 5 micrometers. The corundum-mullite substrate contains 70 to 90% of aluminum oxide. The corundum-mullite burn-bearing board of the invention can meet the fineness demand of burn-bearing products, enable reduction of friction resistance with the burn-bearing products and enable an increase of yield of the finished burn-bearing products. The coating is strongly bonded with the substrate without second calcining and the coating and the substrate can not be separated for long-time using under a high temperature.
Description
Technical field
The present invention relates to fire resisting material field, particularly relate to a kind of highly polished corundum-mullite load bearing board.
Background technology
Corundum-mullite load bearing board is widely used in its excellent mechanical property and thermal shock performance in 1300 ℃-1500 ℃ the high temperature industry, the supporting body when often firing as electronic product or magneticsubstance.Mostly between 100mm-500mm, thickness is between 3mm-20mm, how by half-dried platen press moulding for its size.And for the load bearing board of thinner thickness, because half-dried molded relatively difficulty is normally come through cutting, grind processing by thicker load bearing board.In actual use, part is held products such as burned product such as electric thin and is had relatively high expectations because of it burns till excessive planeness and the smooth finish to the load bearing board surface of contraction, with the friction resistance between goods and the load bearing board in the minimizing sintering procedure, avoid holding and burn the product cracking, guarantee its outward appearance integrity, improve yield rate.And common corundum-mullite load bearing board is easy to reach the planeness requirement, but its surface irregularity can't satisfy the smooth finish requirement.Also like this for the slim load bearing board that plain grinding is crossed.
This is that characteristic by refractory materials itself is determined, as refractory product raw materials used in more particulate material, and bigger critical size, higher goods void content (＞10%), these factors have all determined refractory product can't have any surface finish than ceramic.But the void content of ceramic is very low, and heat-shock resistance is poor, can not satisfy service requirements far away.
Summary of the invention
The objective of the invention is to solve existing common corundum-insufficient problem of mullite load bearing board surface smoothness, a kind of highly polished corundum-mullite load bearing board is provided.
For realizing purpose, the technical solution used in the present invention is:
A kind of highly polished corundum-mullite load bearing board comprises corundum-mullite substrate, and the coating on corundum-mullite substrate; Described coating is that the slip coating by preparation forms, and described slip is by alumina powder and silicon sol 0.5-2.6 in proportion: 1 makes.
The purity of described alumina powder 〉=99%, granularity≤5 micron.
The alumina content of described corundum-mullite substrate is 70%-90%.
Preparation method of the present invention may further comprise the steps:
1) makes corundum-mullite substrate: with corundum-mullite raw material and wedding agent fully mixes, ageing mixture, compacting, dry, burn till promptly.The corundum of thinner thickness-mullite substrate is then got through cutting mill processing by burnt product, substrate behind the plain grinding needs in baking oven 110 ℃ of heating 0.5-6 hour owing to being stained with water, to remove the moisture of substrate surface, the absorption of slip when helping next step coating.
2) make coating paste: alumina powder is joined in the silicon sol in proportion, and fully stirring gets final product.
3) coating: with common mane bruss the coating paste for preparing is spread upon on corundum-mullite substrate, its strickling is got final product with scraper.
4) oven dry: will apply good corundum-mullite load bearing board and put into baking oven 110 ℃ of oven dry.
The alumina content of described corundum-mullite substrate is 70%-90%.
The ratio of described alumina powder and silicon sol is 0.5-2.6: 1.
The purity of described alumina powder 〉=99%, granularity≤5 micron.
Compare with existing common load bearing board, the technique effect that the present invention produced is: by the coating at shaggy corundum-mullite substrate surface, satisfy and hold the demand of burned product, reduce and the friction resistance that holds burned product, improve the yield rate of burned product smooth finish; Coating and bond matrix power are strong, must secondary clacining; Coat-thickness has as thin as a wafer guaranteed that at high temperature life-time service does not peel off.
Embodiment
Embodiment 1:
The invention provides a kind of highly polished corundum-mullite load bearing board, comprise corundum-mullite substrate, and the coating on corundum-mullite substrate.
Make corundum-mullite substrate: with corundum-mullite raw material and wedding agent fully mixes, ageing mixture, compression moulding, dry, burn till and make the corundum-mullite substrate that is of a size of 200mm * 200mm * 10mm, its alumina content is 85%.Form top coat, it is wipeed off at the corundum that obtains-mullite substrate surface coating slip with scraper; Corundum-mullite load bearing board that coating is good is put into baking oven 110 ℃ of oven dry.Described slip is that alumina powder is joined in the silicon sol, fully stirs.Wherein the mass ratio of alumina powder and silicon sol is 2: 1.The purity of alumina powder 〉=99%, granularity are the 3-5 micron.
Embodiment 2:
Make corundum-mullite substrate: corundum-mullite raw material with wedding agent fully mixes, ageing mixture, compacting, dry, burn till, and is cut and ground the corundum-mullite substrate that is processed as size 150mm * 150mm * 4mm, and its alumina content is 74%.The 110 ℃ of heating 40 minutes in baking oven of the corundum-mullite substrate that will be stained with water.Form top coat, it is wipeed off at the corundum that obtains-mullite substrate surface coating slip with scraper; Corundum-mullite load bearing board that coating is good is put into baking oven 110 ℃ of oven dry.Described slip is that alumina powder is joined in the silicon sol, fully stirs.Wherein the mass ratio of alumina powder and silicon sol is 1: 1.The purity of alumina powder 〉=99%, granularity are the 1-3 micron.
Claims (3)
1. highly polished corundum-mullite load bearing board is characterized in that, comprises corundum-mullite substrate, and the coating on corundum-mullite substrate; Described coating is that the slip coating by preparation forms, and described slip is by alumina powder and silicon sol 0.5-2.6 in proportion: 1 makes.
2. a kind of highly polished corundum as claimed in claim 1-mullite load bearing board is characterized in that, the purity of alumina powder 〉=99%, granularity≤5 micron.
3. a kind of highly polished corundum as claimed in claim 1-mullite load bearing board is characterized in that the alumina content of described corundum-mullite substrate is 70%-90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105962334A CN102167601A (en) | 2010-12-20 | 2010-12-20 | Corundum-mullite burn-bearing board having high fineness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105962334A CN102167601A (en) | 2010-12-20 | 2010-12-20 | Corundum-mullite burn-bearing board having high fineness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102167601A true CN102167601A (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105962334A Pending CN102167601A (en) | 2010-12-20 | 2010-12-20 | Corundum-mullite burn-bearing board having high fineness |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104177098A (en) * | 2014-08-14 | 2014-12-03 | 天津开发区宏辉工贸有限公司 | Composite setting plate and manufacture method thereof |
| CN105272286A (en) * | 2015-10-15 | 2016-01-27 | 无锡日月合金材料有限公司 | Protection liner plate for vacuum melting furnace |
| CN112430092A (en) * | 2020-12-16 | 2021-03-02 | 湖南仁海科技材料发展有限公司 | Yttria coating for sintering titanium alloy MIM (metal-insulator-metal) product and application of yttria coating to corundum-mullite setter plate |
| CN112430106A (en) * | 2020-11-30 | 2021-03-02 | 娄底市安地亚斯电子陶瓷有限公司 | Supporting body for ceramic sintering and preparation method thereof |
| CN112553565A (en) * | 2020-11-13 | 2021-03-26 | 厦门金鹭特种合金有限公司 | Interlayer for sintering hard alloy pressed product |
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| JPS6069483A (en) * | 1983-09-27 | 1985-04-20 | 品川白煉瓦株式会社 | Method of executing mortar |
| WO1999000341A1 (en) * | 1997-06-28 | 1999-01-07 | Didier-Werke Ag | Ceramic composite body |
| CN1669979A (en) * | 2005-03-14 | 2005-09-21 | 浙江大学 | Preparation method of silica alumina gel bonding agent for corundum-mullite composite ceramic |
| CN2791042Y (en) * | 2005-05-11 | 2006-06-28 | 冯维银 | Closed sandwith burn-bearing plate |
| CN101423414A (en) * | 2008-11-27 | 2009-05-06 | 中钢集团洛阳耐火材料研究院有限公司 | High temperature and creep resistance corundum-mullite load bearing board and preparation method thereof |
| CN101891487A (en) * | 2010-06-25 | 2010-11-24 | 夏卫平 | Zirconium oxide sandwich composite calcining-endure plate and preparation process thereof |
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- 2010-12-20 CN CN2010105962334A patent/CN102167601A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6069483A (en) * | 1983-09-27 | 1985-04-20 | 品川白煉瓦株式会社 | Method of executing mortar |
| WO1999000341A1 (en) * | 1997-06-28 | 1999-01-07 | Didier-Werke Ag | Ceramic composite body |
| CN1669979A (en) * | 2005-03-14 | 2005-09-21 | 浙江大学 | Preparation method of silica alumina gel bonding agent for corundum-mullite composite ceramic |
| CN2791042Y (en) * | 2005-05-11 | 2006-06-28 | 冯维银 | Closed sandwith burn-bearing plate |
| CN101423414A (en) * | 2008-11-27 | 2009-05-06 | 中钢集团洛阳耐火材料研究院有限公司 | High temperature and creep resistance corundum-mullite load bearing board and preparation method thereof |
| CN101891487A (en) * | 2010-06-25 | 2010-11-24 | 夏卫平 | Zirconium oxide sandwich composite calcining-endure plate and preparation process thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104177098A (en) * | 2014-08-14 | 2014-12-03 | 天津开发区宏辉工贸有限公司 | Composite setting plate and manufacture method thereof |
| CN104177098B (en) * | 2014-08-14 | 2016-01-13 | 天津开发区宏辉工贸有限公司 | Composite calcining-endure plate and preparation method thereof |
| CN105272286A (en) * | 2015-10-15 | 2016-01-27 | 无锡日月合金材料有限公司 | Protection liner plate for vacuum melting furnace |
| CN105272286B (en) * | 2015-10-15 | 2017-06-16 | 无锡日月合金材料有限公司 | A kind of vacuum melting furnace protection liner plate |
| CN112553565A (en) * | 2020-11-13 | 2021-03-26 | 厦门金鹭特种合金有限公司 | Interlayer for sintering hard alloy pressed product |
| CN112553565B (en) * | 2020-11-13 | 2023-04-21 | 厦门金鹭特种合金有限公司 | Interlayer for sintering hard alloy pressed product |
| CN112430106A (en) * | 2020-11-30 | 2021-03-02 | 娄底市安地亚斯电子陶瓷有限公司 | Supporting body for ceramic sintering and preparation method thereof |
| CN112430092A (en) * | 2020-12-16 | 2021-03-02 | 湖南仁海科技材料发展有限公司 | Yttria coating for sintering titanium alloy MIM (metal-insulator-metal) product and application of yttria coating to corundum-mullite setter plate |
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Application publication date: 20110831 |