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A firing adjustment method for porcelain insulators in strong reduction stage

A technology of porcelain insulators and adjustment methods, which is applied to home appliances, other home appliances, clay products, etc., can solve the problems of occasional occurrence of orange glaze and no detailed regulations, etc., and achieve the goal of improving the appearance quality of the glaze surface and preventing crystallization Effect

Active Publication Date: 2019-01-25
XIAN XD HIGH VOLTAGE PORCELAIN INSULATOR CO LTD +1
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  • Summary
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  • Description
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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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Embodiment Construction

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

[0021] For a better illustration, take a certain kiln (5 divisions) as an example as follows:

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

[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, on the basis of medium protection, reduce the primary air flow in each sub-region, generally controlled at 160-180m 3 / h, the gas flow is generally controlled at 28-33m 3 / h. The total primary air flow is controlled at 800-900m 3 / h, the total gas flow is controlled at 145-165m 3 / h. In this way, the actual furnace air-fuel ratio is 5-5.5. The purpose of doing this is to rapidly increase the CO content in the furnace and reduce the oxygen content in a short period of time, that is,...

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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 method for adjusting firing of porcelain insulators in a strong reduction stage. Background technique [0002] In the electric porcelain industry, the most common problems on the surface of porcelain parts are crystallization, glaze bubbles, and orange glaze. These three defects are directly related to the sintering treatment method in the strong reduction stage. [0003] The firing process of porcelain insulators generally includes four stages: low temperature, oxidation, reduction, and cooling. The reduction phase includes a strong reduction phase and a weak reduction phase. Strong reduction stage, that is, the firing process of changing the fire at -1100°C. Firing at this stage is very critical. Improper handling will result in defects such as high oxygen, crystallization, glaze bubbles, and orange glaze. Million-volt large-scale porcelain sleeve or ro...

Claims

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Application Information

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Patent Type & Authority Patents(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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