Sintering adjusting method of porcelain insulator in strong reduction period

A technology of porcelain insulators and adjustment methods, which is applied to clay products, other household appliances, household appliances, etc., can solve the problems of lack of detailed regulations and the occurrence of orange glaze, so as to prevent crystallization and improve the appearance quality of glazed surfaces. Effect

Active Publication Date: 2017-02-22
XIAN XD HIGH VOLTAGE PORCELAIN INSULATOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operation methods are generally abstract. When the products to be fired in the kiln change, the corresponding parameter adjustments have a strong human subjective consciousness.
How to implement the requirements, that is, there are no detailed regulations on how to operate the kiln firing operators. When the operators only rely on experience to handle on-site, different personnel will produce different results, such as crystallization, glaze foam, orange glaze happens from time to time

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with specific embodiments.

[0021] In order to better illustrate, take a kiln (5 zones) as an example:

[0022] The first stage, after changing the fire (970℃-980℃), it takes 0.5 hours:

[0023] The amount of air in the kiln is greater than the amount of CO, that is, the kiln is still in an oxidizing atmosphere, the ratio of air to gas is 12.5-10.5, and the kiln pressure is 5Pa. At this time, reduce the primary air flow in each sub-region on the basis of China Insurance, and generally control it at 160-180m 3 / h, the natural gas flow is generally controlled at 28-33m 3 / h. The total primary air volume is controlled at 800-900m 3 / h, the total gas volume is controlled at 145-165m 3 / h. In this way, the actual air-fuel ratio in the furnace is 5-5.5. The purpose of this is to rapidly increase the CO content in the furnace in a short time and reduce the oxygen content, that is, the entire furnace reaches a ...

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PUM

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Abstract

The invention provides a sintering adjusting method of a porcelain insulator in a strong reduction period. By the adjustment of the proportion of the amount of combustion-supporting wind and the amount of fuel gas in a furnace, the sintering adjusting method of the porcelain insulator in the strong reduction period is improved and ameliorated, and is applicable to sintering of large blanks of megavolt hollow insulator, rod types and the like, a unified norm is formed, and generating of crystallization, glaze bubbles and orange peel defects is effectively eliminated.

Description

Technical field [0001] The invention belongs to the production field of electric porcelain products, and relates to a firing adjustment method of a porcelain insulator in a strong reduction stage. Background technique [0002] In the electric porcelain industry, the most common problems on the surface of porcelain pieces are crystallization, glaze bubbles, and orange glaze. These three defects are directly related to the burning treatment method in the strong reduction stage. [0003] The firing process of porcelain insulators generally includes 4 stages of low temperature, oxidation, reduction and cooling. The reduction phase includes a strong reduction and a weak reduction phase. The strong reduction stage is the firing process at -1100℃. Firing at this stage is very critical, and improper handling will cause defects such as high oxygen, crystallization, glaze bubbles, and orange glaze. Large-scale ceramic sleeves or rods of one million volts occupy a large volume in the kiln...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/26C04B33/32
CPCC04B33/26C04B33/32C04B2235/6586
Inventor 王宜斌李小圣薛显锋
Owner XIAN XD HIGH VOLTAGE PORCELAIN INSULATOR CO LTD
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