CN1547217A - Ceramic insulation piece and method for preparing same - Google Patents
Ceramic insulation piece and method for preparing same Download PDFInfo
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- CN1547217A CN1547217A CNA2003101065077A CN200310106507A CN1547217A CN 1547217 A CN1547217 A CN 1547217A CN A2003101065077 A CNA2003101065077 A CN A2003101065077A CN 200310106507 A CN200310106507 A CN 200310106507A CN 1547217 A CN1547217 A CN 1547217A
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Abstract
The invention refers to a kind of ceramic insulating piece in open dry transformer, and the manufacturing method. The piece is made up of following ingredients and proportion: bauxite 38-45%, feldspar 20-25%, clay 30-42%. One manufacturing method of the invention is ball grinding, mud producing, and mud refining and forming in vacuum, the primary middle and high temperature baking, and then cuts the material with ultrahigh pressure water, the second baking method. Another method is using ball grinding, mud making, carries on the thermal pressure forming technology after mud refining in vacuum, the epoxy resin are coated onto it after baked with high temperature. The performance of the product is very good, the environment protection performance is good, and the cost is low.
Description
Technical field
The present invention relates to insulating part on a kind of transformer and preparation method thereof, specifically, is ceramic insulator of a kind of open type dry-type transformer and preparation method thereof.
Background technology
The transformer of home and abroad use at present has oil immersion insulation transformer, epoxy resin open type dry-type transformer, open type dry-type transformer three major types, wherein the open type dry-type transformer is because of simple in structure, electric property is superior, cost is low, production cycle is extremely short, the system that has been powered uses in a large number, and the main flow of transformer market after will becoming.It adopts NOMEX aromatic polyamides paper is main insulation.
But important insulating element---the pectination stay and the insulating support pad piece of open type dry-type transformer all adopt epoxy material to make at present, easily cause partial discharge, and easily aging, easily the moisture absorption causes insulation property poor, has influenced the transformer electric property.
Summary of the invention
The technical problem to be solved in the present invention is that the insulating element of open type dry-type transformer easily causes partial discharge, and easily aging, easily the moisture absorption causes the problem of insulation property difference.
Ceramic insulator of the present invention is mainly made by the raw material of following each weight ratio: aluminium vanadine 38-45%, feldspar 20-25%, clay 30-42%.
The present invention also provides two kinds of preparation methods of ceramic insulator simultaneously.
A kind of preparation method may further comprise the steps:
1. each raw material is prepared in proportion, insert and make mud in the ball mill behind the ball milling, behind vacuum pugging, make moulded pottery not yet put in a kiln to bake again.
2. with moulded pottery not yet put in a kiln to bake biscuiting to 950 ℃-1050 ℃ in kiln, cooling.
3. the base substrate of water cutting mode after with biscuiting is processed into required form.
4. finished base substrate is burnt to 1200 ℃-1300 ℃ in kiln again, get product after the cooling.
Alternative preparation method may further comprise the steps:
1. each raw material is prepared in proportion, insert and make mud in the ball mill behind the ball milling, behind vacuum pugging, make the moulded pottery not yet put in a kiln to bake of required form with hot pressing mode again.
2. moulded pottery not yet put in a kiln to bake is inserted and burn to 1200 ℃-1300 ℃ cooling in the kiln.
3. get product behind the outer surface spray epoxy to cooled blank.
Beneficial effect of the present invention: (1) good insulation preformance; (2) be difficult for wearing out long service life; (3) can not descend because of the moisture absorption causes electric property; (4) with low cost; (5) adopt inorganic material to make environmentally safe.
Embodiment
Embodiment 1 (preparation pectination stay)
Get aluminium vanadine 42%, feldspar 22%, clay 36% according to weight ratio, mix postposition and go into ball milling in the ball mill, make mud then, behind vacuum pugging, make the rectangle moulded pottery not yet put in a kiln to bake again; In kiln about biscuiting to 1000 ℃, the base substrate of cooling back water cutting mode after with biscuiting is processed into required form with moulded pottery not yet put in a kiln to bake; Again finished base substrate is burnt in kiln to about 1240 ℃, get product after the cooling.
This pectination stay is the new product that substitutes traditional epoxy pectination stay, adopts high-strength porcelain prescription, through ball milling, and system mud, vacuum pugging aftershaping, first middle high-temperature firing, ultra-high pressure water fluid jet cutting, method productions such as twice firing.It is not only by the environment-friendly materials of inorganic composition and makes, and intensity, hardness height, and good insulating is difficult for moisture absorption and deformation after the sinter molding, and cost is low, and market prospects are very optimistic.
Embodiment 2 (preparation insulating support pad piece)
Get aluminium vanadine 38%, feldspar 25%, clay 37% according to weight ratio, mix postposition and go into to make mud in the ball mill behind the ball milling, behind vacuum pugging, make the moulded pottery not yet put in a kiln to bake of required form with hot pressing mode again; Moulded pottery not yet put in a kiln to bake inserted in the kiln burn to about 1260 ℃, the cooling back gets product behind the thick epoxy resin of the outer surface spraying 0.3mm of blank.
This insulating support pad piece adopts ball milling, system mud, and hot extrusion briquetting technique behind the vacuum pugging, spray epoxy after 1260 ℃ of not glazings of high temperature are burnt till, product design is attractive in appearance, good electric property, partial discharge is low, do not make moist, good environmental protection, cost significantly reduces.
Claims (7)
1, ceramic insulator is characterized in that: it is mainly made by the raw material of following each weight ratio: aluminium vanadine 38-45%, feldspar 20-25%, clay 30-42%.
2, ceramic insulator according to claim 1 is characterized in that: the weight ratio of described each raw material is: aluminium vanadine 42%, feldspar 22%, clay 36%.
3, the preparation method of ceramic insulator is characterized in that it may further comprise the steps:
A prepares each raw material in proportion, inserts and makes mud in the ball mill behind the ball milling, makes moulded pottery not yet put in a kiln to bake again behind vacuum pugging.
B is with moulded pottery not yet put in a kiln to bake biscuiting to 950 ℃-1050 ℃ in kiln, cooling.
The base substrate of c water cutting mode after with biscuiting is processed into required form.
D burns finished base substrate to 1200 ℃-1300 ℃ in kiln again, gets product after the cooling.
4, preparation method according to claim 3 is characterized in that: in step b, and biscuiting to 1000 ℃.
5, preparation method according to claim 3 is characterized in that: in steps d, burn to 1240 ℃.
6, the preparation method of ceramic insulator is characterized in that it may further comprise the steps:
A prepares each raw material in proportion, inserts and makes mud in the ball mill behind the ball milling, behind vacuum pugging, makes the moulded pottery not yet put in a kiln to bake of required form with hot pressing mode again.
B inserts moulded pottery not yet put in a kiln to bake and burns to 1200 ℃-1300 ℃ cooling in the kiln.
Get product behind the outer surface spray epoxy of c to cooled blank.
7, preparation method according to claim 6 is characterized in that: the coating thickness of described epoxy resin is 0.1-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106507 CN1269141C (en) | 2003-12-03 | 2003-12-03 | Ceramic insulation piece and method for preparing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106507 CN1269141C (en) | 2003-12-03 | 2003-12-03 | Ceramic insulation piece and method for preparing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1547217A true CN1547217A (en) | 2004-11-17 |
| CN1269141C CN1269141C (en) | 2006-08-09 |
Family
ID=34334208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310106507 Expired - Fee Related CN1269141C (en) | 2003-12-03 | 2003-12-03 | Ceramic insulation piece and method for preparing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1269141C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224384A (en) * | 2013-05-10 | 2013-07-31 | 湖南省醴陵市浦口华高电瓷电器有限公司 | 500kV explosion and quake resistant high-strength porcelain sleeve and production method thereof |
| CN109571643A (en) * | 2018-12-29 | 2019-04-05 | 肇庆鼎晟电子科技有限公司 | Thermistor chip water knife cutting-up technique |
-
2003
- 2003-12-03 CN CN 200310106507 patent/CN1269141C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224384A (en) * | 2013-05-10 | 2013-07-31 | 湖南省醴陵市浦口华高电瓷电器有限公司 | 500kV explosion and quake resistant high-strength porcelain sleeve and production method thereof |
| CN109571643A (en) * | 2018-12-29 | 2019-04-05 | 肇庆鼎晟电子科技有限公司 | Thermistor chip water knife cutting-up technique |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1269141C (en) | 2006-08-09 |
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