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Process for making high temperature color glaze for porcelain

A production method and production process technology, applied in the field of ceramic glaze, can solve the problems of low body strength, unable to fully meet the requirements of industrial production of high-temperature daily-use porcelain color glaze, high cost and unable to meet mass production, etc. The effect of stability

Inactive Publication Date: 2005-03-16
HUNAN HUALIAN CHINA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The glaze of the product produced by this method is clear and the texture is good, but because the melting point of the material of the frit is very low, the firing temperature must be controlled below 1080°C, so that the strength of the green body is low, and lead (Pb) and cadmium are easily precipitated on the glaze (Cd) and other heavy metal substances, making the product fail to meet the hygienic standard requirements
In order to increase the firing temperature, there is currently an inert gas protection method in China to increase the firing temperature. Although the firing temperature can reach 1300°C, the cost is too high to meet the requirements of mass production due to the use of the inert gas protection method.
[0009] Double package method: The so-called double package method is to add additives on the basis of frit glaze, and use zirconia (ZrO 2 ) and silicon oxide (SiO 2 ) colloid wrapped frit glaze powder method for glazing, that is, the combination of method and method improves the stability of the glaze, but due to the introduction of zirconia (ZrO 2 ) makes the glaze have the bad point of method
[0010] Through the analysis of the above methods, it can be seen that the current methods cannot fully meet the requirements of industrial production of high-temperature daily-use porcelain glazes, so it is necessary to improve this

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] This embodiment is the production method of cadmium series high-temperature color glaze.

[0033] 1. Basic frit making

[0034] The proportioning of the mass portion of basic frit material is:

[0035] 15 parts of boric acid, 10 parts of borax, 10 parts of soda ash, 5 parts of red lead

[0036] 5 parts of zinc oxide, 25 parts of feldspar powder, 30 parts of quartz powder

[0037] Ingredients according to the above composition, dry ball milling and mixing evenly. It is melted and melted at 1300°C-1350°C, and the basic frit is obtained after water quenching, dried and crushed into fine powder.

[0038] 2. Preparation of cadmium color glaze

[0039] The proportioning of the mass portion of cadmium series color glaze is:

[0040] 100 parts of basic frit, 3 parts of cadmium color base, 0.01 part of metal cerium powder

[0041] According to the above composition and ingredients, the wet ball glaze is 48 hours, which is the glaze.

[0042] 3. Production of high temperat...

example 2

[0045] This embodiment is still the production method of cadmium-based series high-temperature colored glazes, the main difference being that the mass and weight ratio of cadmium-based colored glazes is:

[0046] 100 parts of basic frit, 9 parts of cadmium color base, 8 parts of metal cerium powder

[0047] The manufacturing process of high-temperature colored glaze products is the same as that of Example 1, except that the kiln is a tunnel kiln, the firing temperature is 1100°C-1150°C, and the firing time is 8 hours, so that the red cadmium glaze series products can be produced.

example 3

[0049] This embodiment is the production method of chrome series high-temperature color glaze.

[0050] 1. Production of basic frit

[0051] The proportioning of the mass portion of basic frit material is:

[0052] 10 parts of boric acid, 10 parts of borax, 10 parts of soda ash, 5 parts of red lead

[0053] 5 parts of zinc oxide, 20 parts of feldspar powder, 35 parts of quartz powder

[0054] Ingredients according to the above composition, dry ball milling and mixing evenly. It is melted and melted at 1250°C-1350°C, and the basic frit is obtained after water quenching, dried and crushed into fine powder.

[0055] 2. Preparation of chrome color glaze

[0056] The proportioning of the mass portion of chrome color glaze is:

[0057] 100 parts of basic frit, 5 parts of chrome color base, 0.1 part of metal palladium powder

[0058] According to the above composition and ingredients, the wet ball glaze is 45-48 hours, which is the glaze.

[0059] 3. Production of high temperatu...

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Abstract

The invention provides a process for making high temperature color glaze for porcelain by employing fused block protection method, which comprises, preparing base fused blocks by means of conventional methods, assembling base fused blocks with base glaze with metal coloring agent by a finite proportion, charging at least one addition agent having lower fusible point and stronger oxidizing property than the chromophoric metal in the base glaze, so as to protect the chromophoric metal from being oxidized and sublimated.

Description

Technical field: [0001] The invention relates to a method for preparing and preparing enamel and a process thereof, in particular to a method for producing high-temperature colored glaze for daily-use porcelain and the process thereof, and belongs to the field of ceramic glazes. technical background: [0002] Daily-use porcelain is now generally divided into high-temperature porcelain, medium-temperature porcelain and low-temperature porcelain. Among them, high-temperature porcelain is very popular because of its high strength and good structure, and the wall can be made very thin. However, it is quite difficult to make high-temperature colored glazes, mainly because many glaze ingredients used for color development are easily sublimated and oxidized at high temperatures, and lose their effect. For example, when cadmium compounds are applied to glaze, they can be yellow and red. The colorant of cadmium yellow glaze is mainly cadmium sulfide (CdS), and it starts to volatiliz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/02C03C8/18C04B33/34
Inventor 钟国前
Owner HUNAN HUALIAN CHINA IND
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