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Production method of composite high-energy discharge zinc oxide resistor disc

A zinc oxide resistor sheet and resistor sheet technology, applied in resistor manufacturing, resistors, varistors, etc., can solve problems such as bursting, valve breakdown, uneven current distribution, etc., and achieve stable comprehensive performance and high current flow. , the effect of improving uniformity

Inactive Publication Date: 2017-04-05
李晓忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The study found that the main reason affecting the flow capacity of the resistor is that the internal microscopic structure of the valve plate leads to the uneven current distribution, and the heat generated thereby leads to the formation of internal thermal stress, which causes the valve plate to break down or burst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of a composite high-throughput zinc oxide resistance sheet, comprising the following steps:

[0018] (1) The resistor sheet is composed of the following components by weight: 83 parts of ZnO, 83 parts of Sb 2 o 5 1 part, Sb 2 o 3 2 parts, NiO 1 part, Ni 2 o 3 0.5 part, Bi 2 o 3 0.1 part, B 2 o 3 1 part, AgNO 3 0.1 parts, 0.2 parts of mullite, 5 parts of glass powder;

[0019] (2) First mix all the components weighed above except ZnO, calcined and pulverize; after pulverization, ball mill until the particle size is less than 0.5 μm, then mix with the main material ZnO and add water to form a uniform slurry, and mix the slurry with The water mass percentage is controlled at 50%; then the slurry is spray-dried into pellets;

[0020] (3) Adjust the water content time of the pellets to 30 minutes, control the moisture content of the pellets at 2%, and then press it into a disc-shaped green body; put the green body into a kiln and deglue at...

Embodiment 2

[0023] A preparation method of a composite high-throughput zinc oxide resistance sheet, comprising the following steps:

[0024] (1) The composite high-flow zinc oxide resistance sheet The resistance sheet is composed of the following components in parts by weight: 93 parts of ZnO, 93 parts of Sb 2 o 5 3 parts, Sb 2 o 3 4 parts, NiO 2 parts, Ni 2 o 3 2.2 parts, Bi 2 o 3 0.8 parts, B 2 o 3 2 parts, AgNO 3 0.6 parts, 1.2 parts of mullite, 8 parts of glass powder;

[0025] (2) First mix all the components weighed above except ZnO, calcined, and pulverize; after pulverization, ball mill until the particle size is less than 1.4 μm, then mix with the main material ZnO and add water to form a uniform slurry, and mix the slurry with The water mass percentage is controlled at 55%; then the slurry is spray-dried into pellets;

[0026] (3) Adjust the water content time of the pellets to 35 minutes, control the moisture content of the pellets at 2.5%, and then press it into...

Embodiment 3

[0029] A preparation method of a composite high-throughput zinc oxide resistance sheet, comprising the following steps:

[0030] (1) The resistor sheet is composed of the following components in parts by weight: 84 parts of ZnO, 84 parts of Sb 2 o 5 1.3 parts, Sb 2 o 3 2.4 parts, NiO 1.2 parts, Ni 2 o 3 0.7 parts, Bi 2 o 3 0.3 parts, B 2 o 3 1.2 parts, AgNO 3 0.2 parts, 0.3 parts of mullite, 5.5 parts of glass powder;

[0031] (2) First mix all the components weighed above except ZnO, calcined and pulverize; after pulverization, ball mill until the particle size is less than 0.7 μm, then mix with the main material ZnO and add water to form a uniform slurry. The water mass percentage is controlled at 52%; then the slurry is spray-dried into pellets;

[0032] (3) Adjust the water content time of the pellets to 33 minutes, control the moisture content of the pellets at 2.1%, and then press it into a disc-shaped green body; put the green body into a kiln to deglue a...

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Abstract

A production method of a composite high-energy discharge zinc oxide resistor disc comprises the following steps: 1, weighing components of the resistor disc, comprising, by weight, 83-93 parts of ZnO, 1-3 parts of Sb2O5, 2-4 parts of Sb2O3, 1-2 parts of NiO, 0.5-2.2 parts of Ni2O3, 0.1-0.8 parts of Bi2O3, 1-2 parts of B2O3, 0.1-0.6 parts of AgNO3, 0.2-1.2 parts of mullite and 5-8 parts of glass powder; 2, mixing and calcining all the weighed components except the ZnO, crushing the mixed and calcined components, mixing the crushed components, the main material ZnO and water to form a uniform slurry, and carrying out spray drying on the slurry to obtain pellets; 3, adjusting the water bearing time of the pellets to 30-35 min, controlling the water content of the pellets to 2-2.5%, compacting the pellets to form a circular green body, adding the green body into a kiln, and carrying out 510-550 DEG C dumping; and 4, sintering the dumped green body at 1300-1400 DEG C, carrying out heat insulation for 6-8 h to obtain a ceramic sheet, grinding two end surfaces of the sintered ceramic sheet, and carrying out heat treatment. The method has the advantages of simple process, and suitableness for industrial production, and the composite zinc oxide resistor disc has the advantages of uniform component and structure and high energy discharge.

Description

technical field [0001] The invention relates to a preparation method of a composite high-throughput zinc oxide resistance chip, which belongs to the technical field of resistance chip materials. Background technique [0002] my country's economy is in the process of rapid development, the demand for electricity is growing rapidly, and the distribution of my country's power resources is unbalanced. In order to adjust this situation, it is necessary to establish a long-distance, large-capacity transmission system, so it is necessary to develop UHV transmission projects. In 2009, my country's first UHV transmission line, Jindongnan, Nanyang, and Jingmen UHV AC test demonstration line projects were energized and trial run, thermal power from Shanxi entered Hubei through 1000kV UHV transmission lines for the first time, and the two major power grids in North China and Central China were realized for the first time networked operation. In the near future, the country will build mo...

Claims

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Application Information

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IPC IPC(8): H01C7/112H01C17/00
Inventor 李晓忠
Owner 李晓忠
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