CN102249651A - Formula and preparation method of easily-polished aluminum oxide ceramic part - Google Patents
Formula and preparation method of easily-polished aluminum oxide ceramic part Download PDFInfo
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- CN102249651A CN102249651A CN2011101219826A CN201110121982A CN102249651A CN 102249651 A CN102249651 A CN 102249651A CN 2011101219826 A CN2011101219826 A CN 2011101219826A CN 201110121982 A CN201110121982 A CN 201110121982A CN 102249651 A CN102249651 A CN 102249651A
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Abstract
The invention discloses an easily-polished aluminum oxide ceramic part which is prepared from the following raw materials: 88-95% of fluorine-containing calcined alpha-aluminium oxide powder, 2-4% of Suzhou clay, 2-4% of talcum powder, 0.2-2% of calcium carbonate, 0.1-1.5% of strontium carbonate and 0.2-1.5% of silica. The preparation method comprises the following steps: A, shattering raw materials; B, heating the obtained shattered powder, and preparing the powder into wax cakes for standby application; C, carrying out hot pressing; D, carrying out biscuit firing; E, firing; and F, cooling and then discharging out of a kiln, wherein the temperature of the primary biscuit firing is controlled between 950 DEG C and 1100 DEG C, so that waxes used as a binder are discharged completely, and micro-pores are formed preliminary; then, after adsorption powder on the surface of a workpiece biscuit is blown away by high-pressure air, the workpiece biscuit is subjected to secondary high-temperature firing, and the firing temperature is 1685-1700 DEG C, so that the shape of the ceramic part is formed, and the ceramic part is uniform in distribution. The ceramic part disclosed by the invention has strong mechanical strength, the surface of the ceramic part can be polished into a mirror surface quite easily, and the polishing time is short.
Description
Technical field
The present invention is specifically related to a kind of alumina ceramics spare field, particularly a kind of easy polishing alumina ceramics spare prescription and preparation method thereof.
Background technology
Four premium propertiess such as high temperature resistant, corrosion-resistant, high insulation that alumina ceramics spare has, nontoxicity are mainly used in chemical industry, in the sealing element of precision optical machineries such as automobile valve.
Existing porcelain spare is owing to defective on the composition of raw materials, and the grinding and polishing time of product trim is oversize, is not suitable for producing in enormous quantities.
Summary of the invention
An object of the present invention is to addressing the above problem, a kind of alumina ceramics spare is provided, this this alumina ceramics spare is made by following raw materials according: fluorine-containing calcining αYang Hualv powder: 88%-95%, Suzhou soil: 2%-4%, talcum powder: 2%-4%, lime carbonate: 0.2%-2%, Strontium carbonate powder: 0.1%-1.5%, silicon-dioxide: 0.2%-1.5%.
This alumina ceramics spare is made by following raw materials according: fluorine-containing calcining αYang Hualv powder: 90%-93%, Suzhou scholar: 2.5%-3%, talcum powder: 2.5%-3.5%, lime carbonate: 0.5%-1.5%, Strontium carbonate powder: 0.3%-1.0%, silicon-dioxide: 0.5%-1.0%.
This alumina ceramics spare is made by following raw materials according: fluorine-containing calcining αYang Hualv powder: 91.5%, and Suzhou soil: 2.7%, talcum powder: 3%, lime carbonate: 1%, Strontium carbonate powder: 0.6%, silicon-dioxide: 0.7%.
The preparation method of described alumina ceramics spare comprises the steps:
A is with raw material pulverizing;
B warms the ground powder and to make gatch stand-by;
C, hot pressing;
D, biscuiting;
E fires;
F, cooling back kiln discharge.
Specifically, comprise the steps: to take by weighing raw mineral materials 70-90 ℃ of down oven dry, after the cooling, by 4-5: 1 ratio of grinding media to material joined in the vibration mill after vibration 2-4 hour, and it is standby that ceramic powder is put into sealed vessel;
Getting the levigated ceramic powder warms to 70-90 ℃, the paraffin of getting the heavy 11.5%-13% of material then joins to melt in the mixing drum and is warming up to about 100 ℃, add ceramic powder, add the industrial oleic acid of the heavy 0.5%-1.0% of pan feeding simultaneously, stir fast and emit that to make gatch standby;
Get the gatch fusing, temperature is controlled at about 60 ℃-75 ℃, then slurry is poured in the Hot-pressed injector barrel, can suppress different workpiece wax base substrates by prior ready-made mould through vacuum stirring;
The wax base substrate is through (30-40 hour) biscuiting of 950 ℃-1100 ℃, and preferred 1000 ℃-1050 ℃, cooling back kiln discharge;
Remove the absorption powder on surface through the high-pressure air spray gun after, again through 1685 ℃-1700 ℃, preferred 1690 ℃-1700 ℃ (18-21 hour) high temperature burn till;
Cooling back kiln discharge is polished to the minute surface packing, and entire making process is promptly accused and finished.
More specifically, the preparation method of this alumina ceramics spare is
Take by weighing raw mineral materials 75 ℃-85 ℃ down oven dry, after the cooling, join in the vibration mill by 5: 1 ratio of grinding media to material that vibration is after 2 hours, it is standby that ceramic powder is put into sealed vessel.
Get the levigated ceramic powder and warm, get material then and weigh 13% paraffin and join that fusing is warming up to 95 ℃-120 ℃ in the mixing drum, add ceramic powder, add pan feeding simultaneously and weigh 1% industrial oleic acid, stir fast and emit that to make gatch standby to 75 ℃-90 ℃.
Get the gatch fusing, temperature is controlled at 70 ℃, then slurry is poured in the Hot-pressed injector barrel, can suppress different workpiece wax base substrates by prior ready-made mould through vacuum stirring.
The wax base substrate is through 1050 ℃ biscuiting (30-36 hour), cooling back kiln discharge after the high-pressure air spray gun is removed surperficial absorption powder, burns till through 1695 ℃ of (18-21 hour) high temperature again, cooling back kiln discharge is polished to the minute surface packing, and entire making process is promptly accused and finished.
Beneficial effect of the present invention: the present invention selects fluorine-containing calcining αYang Hualv powder for use, for be exactly levigate easily, add 5 kinds of admixtures such as Suzhou soil, talcum powder, lime carbonate, Strontium carbonate powder, silicon-dioxide simultaneously, reduced the firing temperature of porcelain spare after the process mix grinding is even widely; Through accurate formulating of recipe, make solid phase, liquid phase, gas phase collocation rationally, make the porcelain spare physical strength of making good; Do not change simultaneously above four good performances of aluminum oxide again.
The present invention has also adopted unique method on burning till, the temperature of biscuiting for the first time is controlled at 950 ℃-1100 ℃, make that micropore begins to take shape as the wax emptying of caking agent, after through high-pressure air the absorption powder on workpiece biscuit surface being blown clean, high temperature burns till for the second time again, firing temperature is 1685 ℃-1700 ℃, and the product that make form mutually and are evenly distributed, and porcelain spare has stronger physical strength, the surface very easily is polished to minute surface, and the time that its polishing is used shortens greatly.
The present invention selects for use fluorine-containing calcining αYang Hualv powder and additive to be made into porcelain, wears into the powder that median size is 0.5-1.5 μ m after 1 to 2 hour through vibration mill, adds wax and dispersion agent is made slurry, is molded into required base substrate then.Base substrate, burns till through 1685 ℃-1700 ℃ high temperature behind the absorption powder in removing surface and working hole through 950 ℃-1100 ℃ dewaxing biscuitings again, product are formed mutually and is evenly distributed, thereby make alumina ceramics spare that certain mechanical strength be arranged.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
Press following formula rate: fluorine-containing calcining αYang Hualv powder 93%, Suzhou soil 2.5%, talcum powder 2.5%, lime carbonate 0.5%, Strontium carbonate powder 0.5%, silica 1 .0%, take by weighing raw mineral materials oven dry (temperature is 80 ℃) cooling after, join by 5: 1 ratio of grinding media to material that vibration is after 2 hours in the vibration mill, it is standby that ceramic powder is put into sealed vessel.
Get the levigated ceramic powder and warm, get material then and weigh 13% paraffin and join that fusing is warming up to 100 ℃ in the mixing drum, add ceramic powder, add pan feeding simultaneously and weigh 1% industrial oleic acid, stir fast and emit that to make gatch standby to 80 ℃.
Get the gatch fusing, temperature is controlled at about 70 ℃, then slurry is poured in the Hot-pressed injector barrel, can suppress different workpiece wax base substrates by prior ready-made mould through vacuum stirring.
The wax base substrate is through 1050 ℃ biscuiting (35 hours), cooling back kiln discharge, remove the absorption powder on surface through the high-pressure air spray gun after, burn till through 1700 ℃ of (20 hours) high temperature again, cooling back kiln discharge is polished to the minute surface packing, entire making process is promptly accused and is finished.
Embodiment 2
Press following formula rate: fluorine-containing calcining αYang Hualv powder 90%, Suzhou soil 3%, talcum powder 3.5%, lime carbonate 1.5%, Strontium carbonate powder 1.0%, silica 1 .0%
Take by weighing raw mineral materials 70 ℃ of down oven dry, after the cooling, join in the vibration mill by 4: 1 ratio of grinding media to material that vibration is after 4 hours, it is standby that ceramic powder is put into sealed vessel;
Get the levigated ceramic powder and warm, get material then and weigh 11.5% paraffin and join that fusing is warming up to about 100 ℃ in the mixing drum, add ceramic powder, add pan feeding simultaneously and weigh 0.5% industrial oleic acid, stir fast and emit that to make gatch standby to 70 ℃;
Get the gatch fusing, temperature is controlled at 60 ℃, then slurry is poured in the Hot-pressed injector barrel, can suppress different workpiece wax base substrates by prior ready-made mould through vacuum stirring;
The wax base substrate cools off the back kiln discharge through 1050 ℃ of biscuitings in 40 hours;
Remove the absorption powder on surface through the high-pressure air spray gun after, burn till through 1685 ℃ of 20 hours high temperature again;
Cooling back kiln discharge is polished to the minute surface packing, and entire making process is promptly accused and finished.
Embodiment 3
Press following formula rate: fluorine-containing calcining αYang Hualv powder 93%, Suzhou soil 2.5%, talcum powder 3.0%, lime carbonate 0.5%, Strontium carbonate powder 1.0%
Take by weighing raw mineral materials 90 ℃ of down oven dry, after the cooling, join in the vibration mill by 5: 1 ratio of grinding media to material that vibration is after 2 hours, it is standby that ceramic powder is put into sealed vessel;
Get the levigated ceramic powder and warm, get material then and weigh 13% paraffin and join that fusing is warming up to about 100 ℃ in the mixing drum, add ceramic powder, add pan feeding simultaneously and weigh 1.0% industrial oleic acid, stir fast and emit that to make gatch standby to 90 ℃;
Get the gatch fusing, temperature is controlled at 75 ℃, then slurry is poured in the Hot-pressed injector barrel, can suppress different workpiece wax base substrates by prior ready-made mould through vacuum stirring;
The wax base substrate is through (30 hours) biscuiting of 1100 ℃, cooling back kiln discharge;
Remove the absorption powder on surface through the high-pressure air spray gun after, again through 1695 ℃, high temperature burnt till in 20 hours;
Cooling back kiln discharge is polished to the minute surface packing, and entire making process is promptly accused and finished.
Embodiment 4-9
According to the form below formulation product, preparation method such as embodiment 1
Embodiment 10
According to embodiment 2 formulation products, method is as follows:
Take by weighing raw mineral materials 85 ℃ of down oven dry, after the cooling, join in the vibration mill by 4.5: 1 ratio of grinding media to material that vibration is after 3 hours, it is standby that ceramic powder is put into sealed vessel;
Get the levigated ceramic powder and warm, get material then and weigh 12% paraffin and join that fusing is warming up to 100 ℃ in the mixing drum, add ceramic powder, add pan feeding simultaneously and weigh 0.75% industrial oleic acid, stir fast and emit that to make gatch standby to 85 ℃;
Get the gatch fusing, temperature is controlled at 70 ℃, then slurry is poured in the Hot-pressed injector barrel, can suppress different workpiece wax base substrates by prior ready-made mould through vacuum stirring;
The wax base substrate is through (35 hours) biscuiting of 1025 ℃, cooling back kiln discharge;
Remove the absorption powder on surface through the high-pressure air spray gun after, again through 1690 ℃, high temperature burnt till in 20 hours;
Cooling back kiln discharge is polished to the minute surface packing, and entire making process is promptly accused and finished.
Essential mineral raw material producer and model
Fluorine-containing calcining αYang Hualv powder: the prosperous emerging micro mist in Henan company limited model: AL-10
Suzhou soil: Suzhou, Jiangsu soil company limited model: No. 1, picking
Talcum powder: haicheng talc powder company model: calcine No. 1
Lime carbonate: Changshan light weight calcium company limited model: light weight calcium
Strontium carbonate powder: Jin Long chemical plant, Hubei model: technical grade
Silicon-dioxide: Huzhou silicon powder factory model: 300 order powder
The present invention fills a prescription and compares with existing regular convention formula ceramic member by the ceramic member of 1685 ℃ of-1700 ℃ of high-temperature firings, and the time of using during its polishing minute surface shortens greatly, can foreshorten to the over half of prior art.
Ceramic member with two kinds of prescriptions of same size, moulding carries out polishing time relatively below.
| Group | 1 | 2 | 3 | 4 |
| The present invention | 15 minutes | 17 minutes | 18 minutes | 20 minutes |
| Prior art | 45 minutes | 50 minutes | 55 minutes | 60 minutes |
Claims (6)
1. one kind is easily polished alumina ceramics spare, it is characterized in that: this alumina ceramics spare is made by following raw materials according: fluorine-containing calcining αYang Hualv powder: 88%-95%, Suzhou soil: 2%-4%, talcum powder: 2%-4%, lime carbonate: 0.2%-2%, Strontium carbonate powder: 0.1%-1.5%, silicon-dioxide: 0.2%-1.5%.
2. according to the described easy polishing alumina ceramics spare of claim 1, it is characterized in that: this alumina ceramics spare is made by following raw materials according: fluorine-containing calcining αYang Hualv powder: 90%-93%, Suzhou soil: 2.5%-3%, talcum powder: 2.5%-3.5%, lime carbonate: 0.5%-1.5%, Strontium carbonate powder: 0.3%-1.0%, silicon-dioxide: 0.5%-1.0%.
3. according to the described easy polishing alumina ceramics spare of claim 1, it is characterized in that: this alumina ceramics spare is made by following raw materials according: fluorine-containing calcining αYang Hualv powder: 91.5%, and Suzhou soil: 2.7%, talcum powder: 3%, lime carbonate: 1%, Strontium carbonate powder: 0.6%, silicon-dioxide: 0.7%.
4. according to the preparation method of the described easy polishing alumina ceramics spare of claim 1, it is characterized in that, comprise the steps:
A is with raw material pulverizing;
B warms the ground powder and to make gatch stand-by;
C, hot pressing;
D, biscuiting;
E fires;
F, cooling back kiln discharge.
5. according to the preparation method of the described easy polishing alumina ceramics spare of claim 4, it is characterized in that, comprise the steps: to take by weighing raw mineral materials 70-90 ℃ of oven dry down, after the cooling, by 4-5: 1 ratio of grinding media to material joined in the vibration mill after vibration 2-4 hour, and it is standby that ceramic powder is put into sealed vessel;
Getting the levigated ceramic powder warms to 70-90 ℃, the paraffin of getting the heavy 11.5%-13% of material then joins to melt in the mixing drum and is warming up to 100 ℃, add ceramic powder, add the industrial oleic acid of the heavy 0.5%-1.0% of pan feeding simultaneously, stir fast and emit that to make gatch standby;
Get the gatch fusing, temperature is controlled at 60 ℃-75 ℃, then slurry is poured in the Hot-pressed injector barrel, can suppress different workpiece wax base substrates by prior ready-made mould through vacuum stirring;
The wax base substrate is through (30-40 hour) biscuiting of 950 ℃-1100 ℃, and preferred 1000 ℃-1050 ℃, cooling back kiln discharge;
Remove the absorption powder on surface through the high-pressure air spray gun after, again through 1685 ℃-1700 ℃, preferred 1690 ℃-1700 ℃ (18-21 hour) high temperature burn till;
Cooling back kiln discharge is polished to the minute surface packing, and entire making process is promptly accused and finished.
6. according to the preparation method of the described easy polishing alumina ceramics spare of claim 5, it is characterized in that, comprise the steps: to take by weighing raw mineral materials 75 ℃-85 ℃ oven dry down, after the cooling, join by 5: 1 ratio of grinding media to material that vibration is after 2 hours in the vibration mill, it is standby that ceramic powder is put into sealed vessel;
Get the levigated ceramic powder and warm, get material then and weigh 13% paraffin and join that fusing is warming up to 95 ℃-120 ℃ in the mixing drum, add ceramic powder, add pan feeding simultaneously and weigh 1% industrial oleic acid, stir fast and emit that to make gatch standby to 75 ℃-90 ℃;
Get the gatch fusing, temperature is controlled at 60 ℃-75 ℃, then slurry is poured in the Hot-pressed injector barrel, can suppress different workpiece wax base substrates by prior ready-made mould through vacuum stirring;
The wax base substrate is through 1050 ℃ biscuiting (30-36 hour), cooling back kiln discharge after the high-pressure air spray gun is removed surperficial absorption powder, burns till through 1695 ℃ of (18-21 hour) high temperature again, kiln discharge is polished to the minute surface packing after being cooled to normal temperature, and entire making process is promptly accused and finished.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101219826A CN102249651A (en) | 2011-05-12 | 2011-05-12 | Formula and preparation method of easily-polished aluminum oxide ceramic part |
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| CN2011101219826A CN102249651A (en) | 2011-05-12 | 2011-05-12 | Formula and preparation method of easily-polished aluminum oxide ceramic part |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880458A (en) * | 2014-01-22 | 2014-06-25 | 龙口市正阳特种耐火材料有限公司 | Preparation method of zirconia ceramics fiber-reinforced 99 alumina ceramic crucible |
| CN111484315A (en) * | 2020-04-07 | 2020-08-04 | 韶关市曲江区国睿高新材料有限公司 | Ceramic formula, preparation method and ceramic grinding core rotor |
| CN112897997A (en) * | 2019-12-03 | 2021-06-04 | 冷水江市佳晨电子陶瓷有限责任公司 | Oversized high-alumina ceramic ball and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1629102A (en) * | 2003-12-18 | 2005-06-22 | 山东理工大学 | Method for preparing Al#-[2]O#-[3] porous ceramic with high strength and high heat stability |
| CN101412619A (en) * | 2008-11-12 | 2009-04-22 | 李海峰 | Micropore hydrogenated aluminum porcelain tube and preparation thereof |
| CN102015101A (en) * | 2008-04-30 | 2011-04-13 | 陶氏技术投资有限公司 | Porous body precursors, shaped porous bodies, processes for making them, and end-use products based upon the same |
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2011
- 2011-05-12 CN CN2011101219826A patent/CN102249651A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629102A (en) * | 2003-12-18 | 2005-06-22 | 山东理工大学 | Method for preparing Al#-[2]O#-[3] porous ceramic with high strength and high heat stability |
| CN102015101A (en) * | 2008-04-30 | 2011-04-13 | 陶氏技术投资有限公司 | Porous body precursors, shaped porous bodies, processes for making them, and end-use products based upon the same |
| CN101412619A (en) * | 2008-11-12 | 2009-04-22 | 李海峰 | Micropore hydrogenated aluminum porcelain tube and preparation thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880458A (en) * | 2014-01-22 | 2014-06-25 | 龙口市正阳特种耐火材料有限公司 | Preparation method of zirconia ceramics fiber-reinforced 99 alumina ceramic crucible |
| CN112897997A (en) * | 2019-12-03 | 2021-06-04 | 冷水江市佳晨电子陶瓷有限责任公司 | Oversized high-alumina ceramic ball and preparation method thereof |
| CN111484315A (en) * | 2020-04-07 | 2020-08-04 | 韶关市曲江区国睿高新材料有限公司 | Ceramic formula, preparation method and ceramic grinding core rotor |
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Application publication date: 20111123 |
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