Sintering process for automobile ceramic sparking plug

A spark plug and ceramic technology, applied in the field of ceramic parts manufacturing, can solve problems such as difficulty in further improving spark plug machining dimensional accuracy, reliability directly affecting engine power, and inability to meet market requirements, achieving good product performance and high machining dimensional accuracy. , The effect of adjustable dimensional accuracy

Inactive Publication Date: 2014-12-24
东莞市品酷机动车配件实业有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The function of the spark plug is to discharge the pulsed high-voltage electricity sent by the high-voltage wire, break down the air between the two electrodes of the spark plug, and generate electric sparks to ignite the mixed gas in the cylinder; as one of the key ignition components of gasoline or gas engines, the spark plug, It cooperates with the ignition system and the fuel supply system to make the engine work, and the reliability of the spark plug directly affects the power and exhaust emission of the engine; due to the increase of the cylinder compression ratio, the ignition voltage of the spark plug must be increased accordingly, so The working environment of spark plug porcelain insulators will become more and more harsh, and the traditional manufacturing process of spark plug porcelain insulators is mostly slurry injection hot pressing mol

Method used

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Examples

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Example Embodiment

[0018] Example

[0019] A kind of ceramic spark plug sintering process for automobile, comprises the following steps:

[0020] First, add the dry powder with a good ratio into the hopper of the isostatic pressing machine, and enter the lower mold cavity of the mold through the connecting pipe connecting the outlet of the hopper and the mold. The travel time of the upper mold is 2s, and the flow at the outlet of the hopper is adjusted. The valve drives the punch of the upper mold of the abrasive tool through the hydraulic cylinder to enter the lower mold cavity and stays for 4 seconds. At this time, the air in the cavity is removed through the vacuum valve, and the raw material is vacuum compacted into a spark plug blank, and the spark plug blank is compacted. , the qualified spark plug light blank is ground and shaped by a grinding machine with a rotating speed of 1500r / min, and its surface is polished by a polishing wheel with a rotating speed of 800-1000r / min, which can effe...

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PUM

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Abstract

The invention relates to the technical field of ceramic part manufacturing, in particular to a sintering process for an automobile ceramic sparking plug. The sintering process comprises the five steps of isostatic compaction, abrasive machining, biscuit firing, glazing and high-pressure sintering. According to the sintering process, dry pressing molding is used for replacing a traditional slurry injection hot briquetting process, an isostatic press is used for conducting cold press molding on dry powder, and in the process engineering, the parameters such as the feeding amount of the dry powder, the heating temperature and time, the thickness of an enamel layer are continuously optimized. A formed sparking plug product is high in density, small in sintering shrinkage, stable in thermal performance, high in production efficiency and high in applicability.

Description

Technical field: [0001] The invention relates to the technical field of manufacturing ceramic parts, in particular to a sintering process for ceramic spark plugs used in automobiles. Background technique: [0002] The function of the spark plug is to discharge the pulsed high-voltage electricity sent by the high-voltage wire, break down the air between the two electrodes of the spark plug, and generate electric sparks to ignite the mixed gas in the cylinder; as one of the key ignition components of gasoline or gas engines, the spark plug, It cooperates with the ignition system and the fuel supply system to make the engine work, and the reliability of the spark plug directly affects the power and exhaust emission of the engine; due to the increase of the cylinder compression ratio, the ignition voltage of the spark plug must be increased accordingly, so The working environment of spark plug porcelain insulators will become more and more harsh, and the traditional manufacturin...

Claims

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Application Information

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IPC IPC(8): H01T21/02C04B35/64C04B41/86B28B3/02
Inventor 董宝亮
Owner 东莞市品酷机动车配件实业有限公司
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