Medium-temperature color glaze formula and sintering process thereof

A color glaze and formula technology, applied in the field of ceramic color glaze, can solve the problems of inconvenient acquisition of raw materials, large expansion system, small melting range, etc., and achieve the effects of improving glaze layer and mechanical properties, reducing firing temperature, and wide melting range

Inactive Publication Date: 2013-03-20
福建省德化县科力陶瓷厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a medium-temperature color glaze formula and its firing process in view of the above-mentioned deficiencies in the prior art, which can solve the problem that the raw materials of the existing color glaze formula are not easy to obtain, and the melting range of the existing color glaze is small and easy Bubbles and expansion system are large and the glaze is easy to crack, and at the same time, the grade of color glaze products is improved by controlling the firing atmosphere and firing temperature curve

Method used

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  • Medium-temperature color glaze formula and sintering process thereof
  • Medium-temperature color glaze formula and sintering process thereof

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Embodiment 1

[0018] Embodiment one: a kind of medium temperature color glaze formula, the basic glaze of this formula contains the raw material of following weight percentage:

[0019] Potassium and sodium composite feldspar 35-45%, kaolin 6-8%, quartz 13-18%, limestone 10-15%, talc 0-8%, zinc oxide 0-6%, barium carbonate 0-6%, ZrSiO4 5 -10%, Sericite 1-3%.

[0020] A successful glaze formula is not simply a reasonable combination of several raw materials. It is restricted and restricted by various conditions, such as raw material origin, material, body shape, performance, kiln structure, atmosphere, Firing temperature, curve, etc., focusing on the combination of glaze, glaze layer maturation temperature, coloring effect and glaze quality. In order to ensure the medium-temperature firing performance of the glaze water and prevent the appearance of color difference changes, the present invention selects potassium-sodium composite feldspar with a potassium-sodium ratio of 1:1 to replace the...

Embodiment 2

[0032] Embodiment two: a kind of medium temperature color glaze formula, the basic glaze of this formula contains the raw material of following weight percentage:

[0033] Potassium sodium composite feldspar 39%, kaolin 7%, quartz 16%, limestone 12%, talc 4%, zinc oxide 2%, barium carbonate 4%, ZrSiO4 8%, sericite 2%.

[0034] The colored glaze of this formula contains the raw material of following weight percentage:

[0035] Cobalt oxide 3%, Iron oxide 2%, Chromium oxide 1%.

Embodiment 3

[0036] Embodiment 3: The glaze formula of this color glaze is 0.30 KNaO, 0.25 CaO, 0.0406 MgO, 0.20 ZnO, 0.05 MgO, 0.40 Al2O3, 3.5 SiO2.

[0037] The firing process of the color glaze comprises the following steps:

[0038] 1. Green body selection: The quality of the glaze directly depends on the adaptability to the green body. To achieve the best glaze quality, you must choose a suitable green body. For the glaze, the weakly acidic body is matched with the alkaline glaze, the feldspar glaze chooses the body with high silicon content, and the lime glaze is matched with the body with high aluminum content;

[0039] 2. Preparation of glaze: The glaze quality of ceramic products is the key to determine the quality of its products. The key to determining the quality of the glaze lies in the scientificity and rationality of the glaze formula. The glaze formula of the present invention is as described above, and the glaze is prepared according to the formula of the above-mentioned ...

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Abstract

The invention discloses a medium-temperature color glaze formula and a sintering process thereof, wherein the parent glaze of the formula contains the following raw materials by weight percent: 35-45% of potassium-sodium integrated feldspar, 6-8% of kaolin, 13-18% of quartz, 10-15% of limestone, 0-8% of talcum, 0-6% of zinc oxide and 0-6% of barium carbonate. The formula is characterized in that the potassium-sodium integrated feldspar is selected in stead of potassium feldspar or solidum feldspar in combination with the local material reality, so that the production cost and sintering temperature are reduced, and simultaneously, the eutectic point of potassium and sodium is low, the melting range is wide, the solution viscosity is reduced slowly as the temperature rises, and the shrinkage of the glaze can be reduced; meanwhile, the mechanical properties, melting performance and thermal stability of the glaze layer are improved, and the dilatation coefficient of the glaze can be reduced to prevent crazing; and in addition, the elasticity of the glaze is improved, the glossiness of the glaze layer is improved, the surface tension of the glaze is reduced and the generation of the intermediate layer is promoted.

Description

technical field [0001] The invention belongs to the technical field of ceramic color glaze, and in particular relates to a medium-temperature color glaze formula and a firing process thereof. Background technique [0002] With the improvement of people's quality of life and the change of consumption concept, daily-use ceramic products are required to be practical, artistic and ornamental. In order to improve the practicality, artistry and appreciation of daily-use porcelain, it is often necessary to adopt a variety of surface decoration methods, and color glaze has become the first choice of the well-deserved. The research on glaze water largely depends on its stability in production, and the key to stability is that the formula must be reasonable. At the same time, cost issues need to be considered in production. The use of local abundant and relatively cheap raw materials is the first choice. Most of the existing color glaze formulas use potassium feldspar or albite. This...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86
Inventor 朱国天
Owner 福建省德化县科力陶瓷厂
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