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Preparation method of insulator
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A technology for insulators and raw materials, which is applied in the field of insulator preparation, can solve problems such as broken blanks, umbrella cracks, and poor results, and achieve the effects of increasing the strength of the blank body, reducing the broken blank rate, and improving fluidity
Inactive Publication Date: 2020-01-17
萍乡市鸿泰高压电瓷电气厂
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Problems solved by technology
Therefore, in the process of molding and repairing, it is often caused by insufficient strength of the green body itself, uneven moisture, poor stability of the trimming machine, extremely high hardness and strength of raw materialcrystal particles such as corundum in the green body, and resistance of the tool itself. The phenomenon of broken blanks will also cause main body cracks and umbrella cracks due to thickness and moisture during the glazing process, which seriously affects the pass rate of the product process
Most manufacturers take measures to control the moisture content of the powder and the drying temperature and time, but with little effect, especially in the dry season of winter and spring, the phenomenon of billet breakage and umbrella cracking is more serious
Method used
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Embodiment 1
[0017] A preferred embodiment of the present invention, a method for preparing an insulator, comprising the following raw materials in weight percent: bauxite 43-51%, feldspar raw materials 10-15%, Zhangcun clay 6-9%, calcined kaolin 8% ~12%, soft clay 17~21%, water reducer 0.25~0.30%, body strengthening agent 0.1~0.5%, water 32~35%.
[0018] The preparation method of water reducing agent is as follows:
[0019] (1) Mix 10-30 parts of propylene-based monomers containing amide groups, 10-30 parts of oligosaccharides containing aldehyde groups, 0.01-0.1 parts of polymerization inhibitors, and 1-10 parts of basic catalysts into 50-80 parts In water, keep warm at 30-90°C for 1-6h;
[0022] In this example, 10 parts of acrylamide, 20 parts of glucose, and 65 pa...
Embodiment 2
[0029] (1) Configure raw materials
[0030] Weigh bauxite, albite, Zhangcun soil, Datong soil, left cloud soil, self-made water-reducing agent and green body reinforcing agent respectively according to weight percentage, mix each raw material of described insulator material, obtain base material, base material The material is heated and solidified, cooled to obtain an insulator material, and the raw materials of the insulator material are mixed and placed in an insulator mold, heated and solidified, cooled, and the insulator mold is removed to obtain an insulator.
[0031] (2) Test effect
[0032] The powder at the press machine was formed by cold isostatic pressing to prepare test strips and perform flexural strength tests. The average strength of the white test strips prepared with the green body strengthening formula was 2.85MPa, and the strength of the unglazed test strips was 182.3MPa , while the average strength of the white blank test strip prepared by the conventional...
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Abstract
The invention discloses a preparation method of an insulator. The insulator comprises the following raw materials in percentage by weight: 43-51% of alumina, 10-15% of feldspar raw materials, 6-9% ofZhangcun clay, 8-12% of calcined kaolin, 17-21% of soft clay, 0.25-0.30% of a water reducing agent, 0.1-0.5% of a green body reinforcing agent and 32-35% of water. The insulator disclosed by the invention is simple in formula, and has a good application effect on solving the problems of umbrella cracking and main body cracking in the dry molding and fettling process of extra-high voltage rod-shaped post porcelain insulators with large size and heavy weight; the invention also provides a simple preparation method and application.
Description
technical field [0001] The invention relates to the field of insulators, in particular to a method for preparing an insulator. Background technique [0002] 特 High voltage has the characteristics of trans-regional, large-capacity, long-distance, low-loss power transmission and land resource saving, and has become a hot spot for development in countries all over the world. The UHV power grid is also known as the "electric power highway". It is understood that the transmission power of a 1100kV line is more than 4 million kilowatts, and the transmission capacity is twice that of the 750kV main network in Northwest China and five times that of the 550kV line. The operation of the UHV power grid requires a large number of UHV rod-shaped post porcelain insulators. [0003] At present, the more famous companies in the world that produce rod-shaped post porcelain insulators include Japan's NGK and Germany's CERAM. NGK Company is now able to produce 1100kV rod-shaped post insulat...
Claims
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Application Information
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