Composite ceramic resistor and manufacture method thereof

A technology of composite ceramics and resistors, which is applied in the manufacture of resistors, resistors, non-adjustable metal resistors, etc., can solve the problems of cumbersome process and traditional resistors that cannot meet the requirements of application technology, and achieve simple equipment and process, and facilitate industrialization The effect of production, high reliability

Active Publication Date: 2010-05-05
NANJING ZHAONENG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wire-wound and film-type resistor insulators and resistors are made separately, and then connected, the process is cumbersome
[0003] The current power electronics technology is developing rapidly, and the requirements for various components are also increasing. In many application fields, components are required to meet various technical conditions at the same time. Traditional resistors are far from meeting the requirements of application technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] formula:

[0027] Bauxite 50Kg

[0028] Kaolin 40Kg

[0029] Talc powder 3Kg

[0030] Carbon 1Kg

[0031] Sodium silicate 1Kg

[0032] Carboxymethyl cellulose 1Kg

[0033] water 4Kg

[0034] Put the above-mentioned weighed raw materials bauxite, kaolin, talcum powder and carbon into the ball mill for 24 hours, and spray the bonding agent prepared by the above-mentioned weighed sodium silicate, carboxymethyl cellulose and water after grinding. Mix well and pass through an 8-mesh sieve; after stale for 16 hours, use a friction press to granulate, the particle size is less than 5mm, and press the granulated material with a 60-ton hydraulic press to make a cylinder with a diameter of Φ12mm and a height of 12mm Put it into a reducing atmosphere furnace at 1200 ℃ to burn the composite ceramic resistance blank; after cooling to room temperature, spray copper electrodes on the two garden surfaces with a flame spray gun, solder the pins, and finally encapsulate them with r...

Embodiment 2

[0036] formula:

[0037] formula:

[0038] Bauxite 70Kg

[0039] Kaolin 10Kg

[0040] Talc powder 1Kg

[0041] Carbon 8Kg

[0042] Sodium silicate 1Kg

[0043] Carboxymethyl cellulose 1Kg

[0044] Polyvinyl alcohol 1Kg

[0045] Water 8Kg

[0046] Put the above-mentioned weighed raw materials bauxite, kaolin, talcum powder and carbon into the ball mill for 36 hours, and spray after the grinding is prepared by the above-mentioned weighed sodium silicate, carboxymethyl cellulose, polyvinyl alcohol and water. Aqueous binder solution, mix well and pass through 8-mesh sieve; after aging for 20 hours, use a friction press to granulate, the particle size is less than 5mm; use a 300T hydraulic press to press the granulated material into an inner diameter of 34mm, an outer diameter of 152mm, and a thickness of 25mm The ring is fired in a reducing atmosphere furnace at 1500°C to burn the composite ceramic resistance blank, and after it is cooled to room temperature after being re...

Embodiment 3

[0048] formula:

[0049] formula:

[0050] Bauxite 55Kg

[0051] Kaolin 13Kg

[0052] Talc powder 10Kg

[0053] Carbon 15Kg

[0054] Sodium silicate 1Kg

[0055] Water 6Kg

[0056] Put the above-mentioned weighed raw materials of bauxite, kaolin, talcum powder and carbon into the ball mill for 48 hours, and spray the binder aqueous solution prepared by the above-mentioned weighed sodium silicate and water after grinding, and mix well. Pass through an 8-mesh sieve after uniformity; after stale for 16 hours, use a friction press to granulate, with a particle size of less than 5mm; use a 200T hydraulic press to press the granulated material into a ring with an outer diameter of 112mm and a thickness of 25mm, and burn it in a reducing atmosphere furnace at 1350°C Form a composite ceramic resistor billet, after it is cooled to normal temperature after it is released from the furnace, aluminum electrodes are sprayed on the two garden surfaces, and the remaining surfaces are co...

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Abstract

The invention relates to a composite ceramic resistor and a manufacture method thereof, belonging to the field of power electronics. The manufacture method of the composite ceramic resistor is suitable for a breaker switch-on resistor, a high-pressure pulse line, a laser, a particle accelerator, and the like. The composite ceramic resistor is manufactured by adopting bauxite, kaolin, talc powder and carbon as main materials through ball-milling, mixing with water and a binding agent, rotting, curing, granulating, compression moulding for forming a raw blank, sintering and metal electrode coating. The composite ceramic resistor comprises the following raw materials in percentage by weight: 50-70 percent of bauxite, 10-40 percent of kaolin, 1-10 percent of talc powder, 1-15 percent of carbon, 1-3 percent of binding agent and 4-8 percent of water.

Description

technical field [0001] The invention relates to a composite ceramic resistor and a manufacturing method thereof, belonging to the field of power electronics. The manufacturing method of the composite ceramic resistor is prepared by using the manufacturing method of the invention, and is suitable for circuit breaker closing resistors, high-voltage pulse lines, lasers, particle accelerators, etc. technical background [0002] In the field of power electronics, traditional resistors are mainly wirewound and film resistors, all of which are conductive materials attached to insulating ceramics, and the effective volume is small. Wire-wound resistors have limited spacing between turns and cannot withstand high voltages; they have large inductance and have limited ability to withstand high currents and high energy. The current section of the film resistor is small, and the impact resistance and reliability are not high. Wire-wound and film-type resistor insulators and resistors ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/00H01C17/30C04B35/622
Inventor 谢伟彬
Owner NANJING ZHAONENG ELECTRIC
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