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Novel material for high-strength electric ceramies and preparation method of novel material

A new type of material and high-strength technology, applied in applications, household utensils, clay products, etc., can solve the problems of large dispersion of mechanical strength, unstable cold and hot performance, and inability to realize raw materials, etc., to achieve improved porcelain structure and uniformity properties, reduction of structural defects, reduction of iron impurities and free quartz content

Inactive Publication Date: 2019-12-20
湖南省醴陵市华电电瓷制造有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, calcined industrial alumina powder is mainly used in foreign countries to produce high-strength electric porcelain. Natural mineral raw materials such as clay and feldspar are also standardized raw materials that have been washed and processed, so the products produced have high reliability. The standardization of raw materials cannot be achieved in time
[0004] The disadvantage of the existing technology in the production of insulators is that the standardization of raw materials cannot be achieved, resulting in large dispersion of mechanical strength of the product
Second, the qualification rate of the whole process is not high and the cost is high
The third is that the cold and hot performance of the product is unstable, resulting in a shortened service life

Method used

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  • Novel material for high-strength electric ceramies and preparation method of novel material
  • Novel material for high-strength electric ceramies and preparation method of novel material
  • Novel material for high-strength electric ceramies and preparation method of novel material

Examples

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Effect test

Embodiment 1

[0026] A new type of material for high-strength electric porcelain, the composition range of the formula is as follows: calcined industrial alumina powder 5%, calcined mullite powder 30%, kaolin and bonded clay 30%, super potassium feldspar powder 20%, additives 1%.

[0027] Based on the above-mentioned material formula, a preparation method of a new material for high-strength electric porcelain is proposed, including the following steps:

[0028] Step 1: Use ball milling equipment to grind the obtained calcined mullite into powder, sieve, select the washed kaolin and super potassium feldspar, also use ball milling equipment to grind into powder, and sieve, use mullite resources, reduce The amount of calcined industrial alumina, through the synergistic reinforcement mechanism of mullite phase and corundum phase, realizes the high strength and high reliability of electric porcelain materials, uses eluted kaolin to replace natural clay minerals, and reduces iron impurities and fr...

Embodiment 2

[0033] A new material for high-strength electric porcelain, the composition range of the formula is as follows: calcined industrial alumina powder 10%, calcined mullite powder 25%, kaolin and bonded clay 25%, super potassium feldspar powder 18%, additives 3%.

[0034] The preparation method of this example is the same as the steps of Example 1, and will not be repeated here.

Embodiment 3

[0036] A new type of material for high-strength electric porcelain, the formula composition range is as follows: calcined industrial alumina powder 15%, calcined mullite powder 20%, kaolin and bonded clay 20%, super potassium feldspar powder 15%, additives 5%.

[0037] The preparation method of this example is the same as the steps of Example 1, and will not be repeated here.

[0038] Calcined mullite is selected from mullite in Xiangxi Autonomous Prefecture, Hunan Province. It is a mineral produced by aluminosilicate at high temperature. It has a large amount. Mullite will be formed when aluminosilicate is artificially heated. Natural mullite crystals are elongated needles in radial clusters. Mullite AI203-SI02 elemental system is the only stable binary compound under normal pressure. The chemical formula is 3AI203-2SI02. There are very few natural mollites, which are usually artificially synthesized by sintering or capacitance methods. Chemical formula A1xSi2-xO5.5-0.5x den...

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Abstract

The invention discloses a novel material for high-strength electric ceramies and a preparation method of the novel material. The novel material for the high-strength electric ceramies is prepared fromthe following components: 5-15% of calcined industrial aluminum oxide powder, 20-30% of calcined mullite powder, 20-30% of kaolin and binding clay, 15-20% of special-grade potassium feldspar powder and 1-5% of an addition agent. The preparation method of the novel material comprises the steps that the obtained calcined mullite is subjected to ball-milling into powder by adopting ball-milling equipment, sieving is carried out, the elutriated kaolin and special-grade potassium feldspar are selected and subjected to ball-milling into powder by adopting the ball-milling equipment as well, sievingis carried out, a powder material is mixed with the calcined industrial aluminum oxide powder, the addition agent is added to obtain slurry, a pressed powder material is made and extruded to blank materials of the electric ceramies with the required size by using a vacuum deairing machine after coarse milling, the blank materials of the electric ceramies are placed in a kiln for firing more than24 hours by adopting an oxidizing flame, and cooling is carried out to obtain the novel material for the high-strength electric ceramies. According to the novel material for the high-strength electricceramies and the preparation method of the novel material, structure defects in the ceramic quality are overcome, the ceramic quality structure and uniformity of a product are improved, the percent of pass of the product manufacturing process is increased, stabilization and reliability of the product performance are ensured, and the fuel cost is saved.

Description

technical field [0001] The invention relates to a novel material for electric porcelain, in particular to a novel material for high-strength electric porcelain and a preparation method thereof. Background technique [0002] Due to the high voltage level, large power transmission capacity and long power transmission distance of UHV power transmission and transformation projects, the requirements for operational reliability are particularly high. The high reliability of the system comes from the high reliability of each device or component. For electric porcelain products, its quality and performance largely depend on the raw material formula. Therefore, the formulation design of high-reliability electric ceramic new materials is particularly important. [0003] At present, calcined industrial alumina powder is mainly used in foreign countries to produce high-strength electric porcelain. Natural mineral raw materials such as clay and feldspar are also standardized raw materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/04C04B33/13C04B33/26C04B35/185C04B35/622C04B35/63
CPCC04B33/04C04B33/13C04B33/131C04B33/26C04B35/185C04B35/622C04B35/6303C04B2235/3463C04B2235/3472C04B2235/349C04B2235/6583C04B2235/96
Inventor 黄震虹樊阳春喻阳红朱保华兰旭
Owner 湖南省醴陵市华电电瓷制造有限公司
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