Aluminum oxide electric porcelain

A technology of alumina and industrial alumina, which is applied in the field of insulators, can solve the problems of low calcination temperature of bauxite, non-dense porcelain, high content of iron and titanium impurities, and achieve small strength dispersion, uniform structure of porcelain, and high reliability. high effect

Inactive Publication Date: 2007-07-04
叶胜平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calcined bauxite replaces quartz, and the strength of porcelain material is improved. However, due to the low calcination temperature of bauxite, the porcelain is an incomplete corundum polymer with holes, so the total porosity of this type of porcelain is as high as 15%, and the porcelain is not good. Density will undoubtedly affect the electromechanical properties and aging properties of the product
In addition, the content of iron and titanium impurities in bauxite is high, the quality is unstable, and the product performance is highly dispersed. Therefore, foreign countries (such as Japan) do not use bauxite in the formula of suspension porcelain insulators.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] High-voltage electric porcelain materials are made of a variety of mineral raw materials, which are processed and calcined according to a certain ratio. The technological process of developing high-strength electric porcelain formula and manufacturing products is:

[0015] Batching—ball milling—squeezing mud—vacuum extrusion—shaping—drying—glazing—firing.

[0016] Numbering

industry

oxidation

aluminum

Feldspar

clay

Silicic acid

Aluminum Magnesium

plasticized

agent

main chemical composition

%

body ratio

Weight g /

cm 3

Bending strength Mpa

SiO 2

Al 2 o 3

porcelain

glazed

1％

15

25

48

1

55

33

＞2.4

＞115

＞140

2％

20

25

53

2

50

39

＞2.5

＞130

＞155

3％

25

20

52

2

45

44

＞2.5

...

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Abstract

The invention relates to alumina oxide electric porcelain, belonging to transmission and distribution device, which in detail is an insulator for transmission line. The proportioning by weight comprises: industrial alumina oxide 20-40%, feldspar 12-28%, clay 45-55%, and alumina silicate-magnesium plasticizer 1-3%. The produced disc suspended ceramic insulator is characterized by strong strength, long durability and good pollution resistance and so on.

Description

technical field [0001] The invention relates to power transmission and transformation equipment, in particular to an insulator used in power transmission lines. Background technique [0002] High-voltage electric porcelain is an important insulating part of power transmission and transformation system. The performance of high-voltage electric porcelain material determines the performance of insulating parts, thus affecting the economy and reliability of the power system. For a long time, the electric porcelain materials used in domestically produced line suspension insulators are mainly "silicon porcelain" and "aluminous bauxite porcelain". Among them, silicon porcelain: 20% to 25% of quartz is introduced into the formula of electric porcelain, SiO 2 The content is 60% to 65%, with quartz as the main crystal phase, and the bending strength of porcelain is about 80Mpa, which is a kind of ordinary quartz porcelain. Because the crystal shape transformation of quartz is accomp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10
Inventor 叶胜平
Owner 叶胜平
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