CN102241506A - Formula of ceramic for insulator ceramic body and preparation method of the insulator ceramic body - Google Patents
Formula of ceramic for insulator ceramic body and preparation method of the insulator ceramic body Download PDFInfo
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- CN102241506A CN102241506A CN2010101716985A CN201010171698A CN102241506A CN 102241506 A CN102241506 A CN 102241506A CN 2010101716985 A CN2010101716985 A CN 2010101716985A CN 201010171698 A CN201010171698 A CN 201010171698A CN 102241506 A CN102241506 A CN 102241506A
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Abstract
The invention discloses a formula of a ceramic for an insulator ceramic body and a preparation method of the insulator ceramic body. Beneficial effects of a technical scheme of the invention comprise that the formula contains specific proportions of silicon oxide and alumina and the silicon oxide and the alumina are sintered into mullite to improve a mechanical strength and a hot and cold performance of a ceramic material, and silica can reduce a dry degree, a firing shrinkage degree and a bending deflection degree of a ceramic blank, play a supportive role in a ceramic blank and improve a mechanical strength of a ceramic blank; alumina can improve greatly a mechanical strength of ceramic blank; added potassium dioxide can reduce a sintering temperature, fill gaps of a ceramic blank and improve a compactness of a ceramic material, and a mechanical strength and an electrical performance of a ceramic blank; and through a cooperation with a preparation method, an insulator ceramic body obtains improved greatly hydrophobic properties, anti-fouling properties, insulating properties and mechanical properties.
Description
Technical field
The present invention relates to the high voltage power transmission manufacturing field of equipment, be specifically related to a kind of preparation method of prescription and insulator porcelain body of porcelain insulator body and function pottery.
Background technology
Insulator is widely used in the high voltage power transmission field, insulator is born and is guaranteed lead and cross-arm, shaft tower has enough insulating tasks, it is in operation and need bears the loading of lead vertical direction and the pulling force of horizontal direction, also stand Exposure to Sunlight, drench with rain, the corrosion of climate change and chemical substance, therefore, insulator should have good electric property, enough physical strengths are arranged again, insulator can be divided into support insulator by structure, suspended insulator, anti-pollution type insulator and through insulator, generally can be divided into line insulator by purposes, substation's support insulator and sleeve pipe three major types, material branch according to insulator, pottery is arranged at present, glass and organic composite insulator, the quality of insulator is concerning most important with power transmission network, for porcelain insulator, the quality of its porcelain body occupies critical role, the main task of insulator is to provide insulation and support for ultra-high-tension power transmission line, this task is mainly finished by the insulator porcelain body, to its hydrophobicity performance, antifouling property, insulating property and mechanical property all have strict requirement, the above-mentioned performance of existing insulator all has much room for improvement, than being easier to take place crackle, hydrophobicity performance easily descends, easily puncture, flashover fault, the reduction in work-ing life also influences power grid security.
Summary of the invention
For addressing the above problem, the object of the present invention is to provide the prescription of the porcelain insulator body and function pottery that a kind of hydrophobicity performance, antifouling property, insulating property and mechanical property all be significantly increased and the preparation method of insulator porcelain body.
For achieving the above object, technical scheme of the present invention is: a kind of prescription of porcelain insulator body and function pottery, each weight percentages of components of described prescription is: SiO
2Be 40-48%, Al
2O
3Be 45-52%, K
2O is 3-4%.
Each component of described prescription comes from following raw materials by weight percent: Feldspar Powder 6%-10%, clay 50%-54%, bauxitic clay 36%-42%.
A kind of preparation method of insulator porcelain body may further comprise the steps:
The first step, batching:, various raw materials are mixed according to the prescription of above-mentioned insulator with pottery;
In second step, mill: mixed raw material is added the water-powered roller mill in runner milling, form fine and smooth mud;
The 3rd step, press filt: mud is sent in the slip drying press, the moisture in the mud is got rid of a part, make it to become mud cake by pressure;
In the 4th step, dry in the shade: mud cake is dried in the shade naturally, further reduce moisture;
The 5th step, moulding: mud cake is inserted in the mould,, with mud cake under external force, fashion into the blank of desired shape by plastic forming method;
The 6th step, drying: by air heating being got rid of the mechanical bond moisture in the blank;
The 7th step, glazing: execute the layer of even glaze layer that improves mechanical performance of products on the blank surface;
In the 8th step, burn till: the blank after the glazing is put into firing furnace, control furnace temperature between 1250 ℃ to 1310 ℃, sintering time 25 hours to 30 hours.
Preferably, the described weight percent of the first step adopts the dry method metering.
Preferably, after milling, add the step of the deironing of sieving: promptly, remove detrimental impurity, and remove ferromegnetism impurity in the mud with magnetic separator de-ironing by sieve to the mud after levigate.
Preferably, add old step between the 3rd step and the 4th step: being about to mud cake, to be placed on temperature be the 10-30 degree, and humidity is in the ageing silo of 70%-95% old 2 days to 6 days.
Preferably, the step that after the glazing step, adds sand: be stained with the porcelain sand that one deck strengthens product mucilage binding intensity equably with binding agent at the position that needs mucilage binding insulator metal cap and metal pedestal.
Preferably, the step that the vacuum of the plastic performance of adding raising pug extrudes between the 3rd step and the 4th step: in the vacuum deairing machine that mud cake is packed into, extract the air in the pug.
Adopt the beneficial effect of technique scheme to be: the silicon oxide and the aluminium sesquioxide that contain described ratio in the prescription, generate mullite behind the sintering, improve the physical strength and the cold and hot performance of porcelain, silicon-dioxide can reduce the drying of base substrate and burn till contraction, reduce flexural deformation, and can play the physical strength of the skeleton function and the raising porcelain base of porcelain base; Alchlor can make the porcelain base improve physical strength significantly; Other adds titanium dioxide potassium can reduce sintering temperature, fills porcelain base gap, increases the compactness of porcelain, improves the physical strength and the electric property of porcelain base; Therefore this prescription cooperates described preparation method to make hydrophobicity performance, antifouling property, insulating property and the mechanical property of insulator porcelain body all be significantly increased.
Embodiment
A kind of prescription of porcelain insulator body and function pottery, each weight percentages of components of described prescription is: SiO
2Be 40-48%, Al
2O
3Be 45-52%, K
2O is 3-4%.
In concrete enforcement, adopt SiO
2Be 40%, Al
2O
3Be 52%, K
2O is 3%;
Perhaps SiO
2Be 42%, Al
2O
3Be 49.5%, K
2O is 3.5%;
Perhaps SiO
2Be 45%, Al
2O
3Be 46%, K
2O is 4%;
Perhaps SiO
2Be 40-48%, Al
2O
3Be 45-52%, K
2O is other the arbitrary combination in the 3-4% scope.
Each component of described prescription comes from following raw materials by weight percent: Feldspar Powder 6%-10%, kaolin 50%-54%, bauxitic clay 36%-42%.
In concrete enforcement, adopt Feldspar Powder 6%, kaolin 52%, bauxitic clay 42%;
Perhaps Feldspar Powder 6%, kaolin 54%, bauxitic clay 36%;
Perhaps Feldspar Powder 8%, kaolin 54%, bauxitic clay 38%;
Perhaps Feldspar Powder 9%, kaolin 51%, bauxitic clay 40%;
Perhaps Feldspar Powder 10%, kaolin 50%, bauxitic clay 40%;
Perhaps other arbitrary combination in Feldspar Powder 6%-10%, kaolin 50%-54%, the bauxitic clay 36%-42% scope.
Preparation method's specific embodiment of insulator porcelain body is as follows:
Embodiment 1, and a kind of preparation method of insulator porcelain body may further comprise the steps:
The first step, batching: according to the prescription of insulator with pottery, with each weight percentages of components be: the raw material of Feldspar Powder 6%, kaolin 54%, bauxitic clay 42% mixes;
In second step, mill: mixed raw material is added the water-powered roller mill in runner milling, form fine and smooth mud;
The 3rd step, press filt: mud is sent in the slip drying press, the moisture in the mud is got rid of a part, make it to become mud cake by pressure;
In the 4th step, dry in the shade: mud cake is dried in the shade naturally, further reduce moisture;
The 5th step, moulding: mud cake is inserted in the mould,, with mud cake under external force, fashion into the blank of desired shape by plastic forming method;
The 6th step, drying: by air heating being got rid of the mechanical bond moisture in the blank;
The 7th step, glazing: execute the uniform glaze layer of last layer on the blank surface, improve mechanical performance of products;
In the 8th step, burn till: the blank after the glazing is put into firing furnace, control furnace temperature at 1310 ℃, sintering time 30 hours.
In the first step, the weight percent of each component can also be: SiO
2Be 40%, Al
2O
3Be 52%, K
2O is 3%.Perhaps, SiO
2Be 42%, Al
2O
3Be 49.5%, K
2O is 3.5%.Perhaps SiO
2Be 40-48%, Al
2O 3 is 45-52%, K
2O is other the arbitrary combination in the 3-4% scope.
Embodiment 2, and a kind of preparation method of insulator porcelain body may further comprise the steps:
The first step, batching: according to the prescription of insulator with pottery, with each compositions in weight percentage: Feldspar Powder 6%, clay 54%, bauxitic clay 36% mix;
In second step, mill: mixed raw material is added the water-powered roller mill in runner milling, form fine and smooth mud;
The 3rd step, press filt: mud is sent in the slip drying press, the moisture in the mud is got rid of a part, make it to become mud cake by pressure;
In the 4th step, dry in the shade: mud cake is dried in the shade naturally, further reduce moisture;
The 5th step, moulding: mud cake is inserted in the mould,, with mud cake under external force, fashion into the blank of desired shape by plastic forming method;
The 6th step, drying: by air heating being got rid of the mechanical bond moisture in the blank;
The 7th step, glazing: execute the uniform glaze layer of last layer on the blank surface, improve mechanical performance of products;
In the 8th step, burn till: the blank after the glazing is put into firing furnace, control furnace temperature at 1300 ℃, sintering time 29 hours.
In the first step of embodiment 2, the weight percent of each component can also be: Feldspar Powder 8%, clay 54%, bauxitic clay 38%.Perhaps Feldspar Powder 10%, clay 50%, bauxitic clay 40%.Perhaps other arbitrary combination in Feldspar Powder 6%-10%, kaolin 50%-54%, the bauxitic clay 36%-42% scope.
Embodiment 3, and a kind of preparation method of insulator porcelain body may further comprise the steps:
The first step, batching: according to the prescription of insulator with pottery, with each compositions in weight percentage: Feldspar Powder 8%, clay 54%, bauxitic clay 38% mix;
In second step, mill: mixed raw material is added the water-powered roller mill in runner milling, form fine and smooth mud;
The 3rd step, press filt: mud is sent in the slip drying press, the moisture in the mud is got rid of a part, make it to become mud cake by pressure;
In the 4th step, dry in the shade: mud cake is dried in the shade naturally, further reduce moisture;
The 5th step, moulding: mud cake is inserted in the mould,, with mud cake under external force, fashion into the blank of desired shape by plastic forming method;
The 6th step, drying: by air heating being got rid of the mechanical bond moisture in the blank;
The 7th step, glazing: execute the uniform glaze layer of last layer on the blank surface, improve mechanical performance of products;
In the 8th step, burn till: the blank after the glazing is put into firing furnace, control furnace temperature at 1290 ℃, sintering time 28 hours.
Embodiment 4, and a kind of preparation method of insulator porcelain body may further comprise the steps:
The first step, batching: according to the prescription of insulator with pottery, with each compositions in weight percentage: Feldspar Powder 9%, clay 51%, bauxitic clay 40% mix;
In second step, mill: mixed raw material is added the water-powered roller mill in runner milling, form fine and smooth mud;
The 3rd step, removal of contamination: to the mud after levigate, remove detrimental impurity, and remove ferromegnetism impurity in the mud with magnetic separator de-ironing by the sieve that density is higher.
The 4th step, press filt: mud is sent in the slip drying press, the moisture in the mud is got rid of a part, make it to become mud cake by pressure;
In the 5th step, dry in the shade: mud cake is dried in the shade naturally, further reduce moisture;
The 6th step, moulding: mud cake is inserted in the mould,, with mud cake under external force, fashion into the blank of desired shape by plastic forming method;
The 7th step, drying: by air heating being got rid of the mechanical bond moisture in the blank;
The 8th step, glazing: execute the uniform glaze layer of last layer on the blank surface, improve mechanical performance of products;
In the 9th step, burn till: the blank after the glazing is put into firing furnace, control furnace temperature at 1280 ℃, sintering time 26 hours.
Embodiment 5, and a kind of preparation method of insulator porcelain body may further comprise the steps:
The first step, batching: according to the prescription of insulator with pottery, with each compositions in weight percentage: Feldspar Powder 10%, clay 50%, bauxitic clay 40% mix;
In second step, mill: mixed raw material is added the water-powered roller mill in runner milling, form fine and smooth mud;
The 3rd step, removal of contamination: to the mud after levigate, remove detrimental impurity, and remove ferromegnetism impurity in the mud with magnetic separator de-ironing by the sieve that density is higher.
The 4th step, press filt: mud is sent in the slip drying press, the moisture in the mud is got rid of a part, make it to become mud cake by pressure;
The 5th step: old: being about to mud cake, to be placed on temperature be the 10-30 degree, and humidity is in the ageing silo of 70%-95% old 2 days to 6 days.
In the 6th step, vacuum extrudes: mud cake is packed in the vacuum deairing machine, extract the air in the pug.
In the 7th step, dry in the shade: mud cake is dried in the shade naturally, further reduce moisture;
The 8th step, moulding: mud cake is inserted in the mould,, with mud cake under external force, fashion into the blank of desired shape by plastic forming method;
The 9th step, drying: by air heating being got rid of the mechanical bond moisture in the blank;
The tenth step, glazing: execute the uniform glaze layer of last layer on the blank surface, improve mechanical performance of products;
The 11 step, last sand: be stained with the porcelain sand that one deck strengthens product mucilage binding intensity equably with binding agent at the position that needs mucilage binding insulator metal cap and metal pedestal.
In the 12 step, burn till: the blank after the glazing is put into firing furnace, control furnace temperature at 1260 ℃, sintering time 25 hours.
In the foregoing description, for improving the quality of products, the described weight percent of the first step then all adopts the dry method metering.
Adopt the beneficial effect of technique scheme to be: the silicon oxide and the aluminium sesquioxide that also have described ratio in the prescription, generate mullite behind the sintering, improve the physical strength and the cold and hot performance of porcelain, silicon-dioxide can reduce the drying of base substrate and burn till contraction, reduce flexural deformation, and can play the physical strength of the skeleton function and the raising porcelain base of porcelain base; Alchlor can make the porcelain base improve physical strength significantly; Titanium dioxide potassium can reduce sintering temperature, fills porcelain base gap, increases the compactness of porcelain, improves the physical strength and the electric property of porcelain base; Therefore the technical program makes hydrophobicity performance, antifouling property, insulating property and the mechanical property of insulator porcelain body all be significantly increased.
Above-described only is preferred implementation of the present invention, should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (10)
1. the prescription of a porcelain insulator body and function pottery is characterized in that, each weight percentages of components of described prescription is: SiO
2Be 40-48%, Al
2O
3Be 45-52%, K
2O is 3-4%.
2. the prescription of a kind of porcelain insulator body and function pottery according to claim 1 is characterized in that, each component of described prescription comes from following raw materials by weight percent: Feldspar Powder 6%-10%, clay 50%-54%, bauxitic clay 36%-42%.
3. the preparation method of an insulator porcelain body is characterized in that, may further comprise the steps:
The first step, batching:, various raw materials are mixed according to claim 1 or the ceramic prescription of 2 described a kind of insulators;
In second step, mill: mixed raw material is added the water-powered roller mill in runner milling, form fine and smooth mud;
The 3rd step, press filt: mud is sent in the slip drying press, the moisture in the mud is got rid of a part, make it to become mud cake by pressure;
In the 4th step, dry in the shade: mud cake is dried in the shade naturally, further reduce moisture;
The 5th step, moulding: mud cake is inserted in the mould,, with mud cake under external force, fashion into the blank of desired shape by plastic forming method;
The 6th step, drying: by air heating being got rid of the mechanical bond moisture in the blank;
The 7th step, glazing: execute the layer of even glaze layer that improves mechanical performance of products on the blank surface;
In the 8th step, burn till: the blank after the glazing is put into firing furnace, control furnace temperature between 1260 ℃ to 1310 ℃, sintering time 25 hours to 30 hours.
4. the preparation method of a kind of insulator porcelain body as claimed in claim 3 is characterized in that, the described weight percent of the first step adopts the dry method metering.
5. the preparation method of a kind of insulator porcelain body as claimed in claim 4, it is characterized in that, the step that after milling, adds the deironing of sieving: promptly, remove detrimental impurity, and remove ferromegnetism impurity in the mud with magnetic separator de-ironing by sieve to the mud after levigate.
6. as the preparation method of claim 3 or 4 described a kind of insulator porcelain bodies, it is characterized in that, add old step between the 3rd step and the 4th step: being about to mud cake, to be placed on temperature be the 10-30 degree, and humidity is in the ageing silo of 70%-95% old 2 days to 6 days.
7. as the preparation method of claim 3 or 4 described a kind of insulator porcelain bodies, it is characterized in that, after the glazing step, add the step of sand: be stained with the porcelain sand that one deck strengthens product mucilage binding intensity equably with binding agent at the position that needs mucilage binding insulator metal cap and metal pedestal.
8. as the preparation method of claim 3 or 4 described a kind of insulator porcelain bodies, it is characterized in that the step that the vacuum of the plastic performance of adding raising pug extrudes between the 3rd step and the 4th step: in the vacuum deairing machine that mud cake is packed into, extract the air in the pug.
9. the preparation method of a kind of insulator porcelain body as claimed in claim 6 is characterized in that, the step that the vacuum of the plastic performance of adding raising pug extrudes after described old step: in the vacuum deairing machine that mud cake is packed into, extract the air in the pug.
10. the preparation method of a kind of insulator porcelain body as claimed in claim 6, it is characterized in that, after the glazing step, add the step of sand: be stained with the porcelain sand that one deck strengthens product mucilage binding intensity equably with binding agent at the position that needs mucilage binding insulator metal cap and metal pedestal.
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| CN102786289A (en) * | 2012-09-05 | 2012-11-21 | 江苏南瓷绝缘子有限公司 | High-alumina direct current porcelain insulator and preparation method thereof |
| CN102815924A (en) * | 2012-08-08 | 2012-12-12 | 大悟县博源电瓷厂 | Method for manufacturing high-voltage electro-ceramic insulator |
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| CN103344554A (en) * | 2013-07-03 | 2013-10-09 | 中国海洋石油总公司 | Measurement device of mud cake flow-back property |
| CN103515036A (en) * | 2013-10-22 | 2014-01-15 | 温县供电有限责任公司 | Manufacturing method of high-strength ceramic insulator |
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| CN102815924A (en) * | 2012-08-08 | 2012-12-12 | 大悟县博源电瓷厂 | Method for manufacturing high-voltage electro-ceramic insulator |
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| CN103208339A (en) * | 2013-04-10 | 2013-07-17 | 谢锡云 | Rod ceramic insulator for electrified railway contact system |
| CN103208339B (en) * | 2013-04-10 | 2015-07-01 | 谢锡云 | Rod ceramic insulator for electrified railway contact system |
| CN103344554A (en) * | 2013-07-03 | 2013-10-09 | 中国海洋石油总公司 | Measurement device of mud cake flow-back property |
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Application publication date: 20111116 |