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A method of reducing pinholes and air bubbles in glaze

A technology of pinholes and air bubbles, which is applied in the field of ceramic glaze processing, can solve the problems of reducing the transparency and glaze gloss of products, affecting the reputation and benefits of enterprises, and affecting the surface quality of products, etc., achieving bright color and easy glaze application. simple effect

Active Publication Date: 2018-08-24
界首市伟盛古窑彩陶制作发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It reduces the transparency and glaze gloss of the product, affects the surface quality of the product, reduces the quality level of the product, increases the production cost, reduces the income of employees, and also affects the reputation of the enterprise and the benefits of the enterprise
[0003] The causes of glaze pinholes and air bubbles involve a wide range of aspects, so how to reduce glaze pinholes and air bubbles as much as possible, improve product quality, and reduce production costs have always puzzled ceramic manufacturers. There is no effective solution yet. processing method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for reducing pinholes and air bubbles in a glaze comprising the steps of:

[0021] (1) Mixing of raw materials: After mixing all raw materials, add expanded vermiculite with a weight of 2.1% of all raw materials, and crush to 100-140 mesh to obtain crushed material;

[0022] (2) Primary melting: Add water with 13% weight of the crushed material to the crushed material, add it into the furnace, and gradually increase the temperature, first increase the temperature at a rate of 12°C / min for 20 minutes, and then increase it at a rate of 6°C / min to The highest temperature is 1320°C, and the temperature is kept for 15 minutes to obtain a primary molten material;

[0023] (3) Primary quenching: Place the primary molten material in a sodium nitrate solution quenching liquid with a mass concentration of 3.2% and cool it to 36~40°C to obtain a primary quenching material;

[0024] (4) Secondary melting: Add the primary quenching material into the furnace, gradually incr...

Embodiment 2

[0029] A method for reducing pinholes and air bubbles in a glaze comprising the steps of:

[0030] (1) Mixing of raw materials: After mixing all raw materials, add expanded vermiculite of 2.2% by weight of all raw materials, and crush to 100-140 mesh to obtain crushed material;

[0031] (2) Primary melting: Add water with 14% weight of the crushed material to the crushed material, add it into the furnace, and gradually increase the temperature, first increase the temperature at a rate of 12°C / min for 23 minutes, and then increase it at a rate of 6°C / min to The highest temperature is 1340°C, and the temperature is kept for 18 minutes to obtain a primary molten material;

[0032] (3) Primary quenching: Place the primary molten material in a sodium nitrate solution quenching liquid with a mass concentration of 3.3% and cool it to 36~40°C to obtain a primary quenching material;

[0033] (4) Secondary melting: Add the primary quenching material into the furnace, gradually increase...

Embodiment 3

[0038] A method for reducing pinholes and air bubbles in a glaze comprising the steps of:

[0039] (1) Mixing of raw materials: After mixing all raw materials, add expanded vermiculite with a weight of 2.3% of all raw materials, and crush to 100-140 mesh to obtain crushed material;

[0040] (2) Primary melting: add water with 15% weight of the crushed material to the crushed material, add it into the furnace, and gradually increase the temperature, first increase the temperature at a rate of 13°C / min for 25 minutes, and then increase it at a rate of 7°C / min to The maximum temperature is 1360°C, and the temperature is kept for 20 minutes to obtain a primary molten material;

[0041] (3) Primary quenching: Place the primary molten material in a sodium nitrate solution quenching liquid with a mass concentration of 3.4% and cool it to 36~40°C to obtain a primary quenching material;

[0042] (4) Secondary melting: Add the primary quenching material into the furnace, gradually incr...

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Abstract

The invention mainly relates to the technical field of ceramic glaze processing and discloses a method for decreasing glaze pinholes and bubbles; the method comprises: mixing materials, melting for the first time, quenching for the first time, melting for the second time, quenching for the second time, ball-milling and pulverizing, and glazing and firing; the method is simple and convenient to perform, and can decrease glaze pinholes and bubbles by 90.9% and save product cost by 21.2%; the raw materials are crushed, water is added for melting, mixing well the materials is facilitated, sodium nitrate solution is added for quenching, double melting and quenching are performed, emission of the gas from the materials is quickened, the stability, mobility and compactness of the glaze are improved, glaze can be applied evenly, the cost can be saved as low-temperature slow firing is performed, the glaze has bright color and zero pinholes and bubbles, has matching expansion coefficient, and has smooth surface, good corrosion resistance and service life extended by 16.4%.

Description

technical field [0001] The invention mainly relates to the technical field of ceramic glaze processing, in particular to a method for reducing glaze pinholes and air bubbles. Background technique [0002] Glaze pinholes and air bubbles are one of the main defects in ceramic production. It reduces the transparency and glaze gloss of the product, affects the surface quality of the product, reduces the quality level of the product, increases the production cost, reduces the income of employees, and also affects the reputation and benefits of the enterprise. [0003] The causes of glaze pinholes and air bubbles involve a wide range of aspects, so how to reduce glaze pinholes and air bubbles as much as possible, improve product quality, and reduce production costs have always puzzled ceramic manufacturers. There is no effective solution yet. processing method. Contents of the invention [0004] In order to remedy the defects of the prior art, the purpose of the present invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/14C04B41/86
CPCC04B41/5022C04B41/86C04B41/4535C04B41/0072
Inventor 孙伟刘少标
Owner 界首市伟盛古窑彩陶制作发展有限公司
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