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Preparation process of overglaze color craft porcelain with non-cracking glaze surface

A preparation process and glaze color technology, which is applied in the production of ceramic materials, etc., can solve the problems of affecting the appearance quality and easy cracking, and achieve the effect of small thermal expansion coefficient, improved fineness, and beautiful appearance

Active Publication Date: 2019-12-27
FUJIAN PROVINCE DEHUA ZHENNAN CERAMIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glazes for overglaze colors not only require strong adhesion and can effectively adhere to the glazed surface of porcelain, but also require excellent corrosion resistance, wear resistance and weather resistance, and good pattern rendering effects. Currently, overglaze colors are in the second firing During the manufacturing process, it is easy to crack and seriously affects the appearance quality, which needs further improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Disclosed is an overglaze craft porcelain with no cracks on the glaze surface, which includes a body and glaze, and the thickness of the glaze is 0.3mm.

[0055] The green body includes the following raw materials in parts by weight: 22 parts of potassium feldspar, 22 parts of halloysite, 35 parts of Dehua quartz, 15 parts of diatomite, 10 parts of dolomite, 5 parts of vermiculite, 5 parts of hematite, nitrogen 4 parts of boron oxide, 3 parts of lanthanum oxide, 1 part of zirconium silicate, and 0.8 part of yttrium oxide.

[0056] The glaze includes the following raw materials in parts by weight: 30 parts of quartzite, 22 parts of sillimanite, 12 parts of sepiolite, 15 parts of dolomite, 5 parts of borax, 5 parts of stone powder, 10 parts of low-temperature frit, 1 part of zirconia, 8 parts of zinc oxide, 1 part of yttrium oxide.

[0057] The low-temperature frit includes the following raw materials in parts by weight: 20 parts of mullite, 15 parts of wollastonite, 5 p...

Embodiment 2

[0077] Disclosed is an overglaze craft porcelain with no cracks on the glaze surface, comprising a body and glaze, the thickness of which is 0.5 mm.

[0078] The green body includes the following raw materials in parts by weight: 25 parts of potassium feldspar, 18 parts of halloysite, 40 parts of Dehua quartz, 10 parts of diatomite, 15 parts of dolomite, 8 parts of vermiculite, 3 parts of hematite, nitrogen 8 parts of boron oxide, 1 part of lanthanum oxide, 2 parts of zirconium silicate, and 0.5 part of yttrium oxide.

[0079] The glaze includes the following raw materials in parts by weight: 40 parts of quartzite, 18 parts of sillimanite, 15 parts of sepiolite, 10 parts of dolomite, 8 parts of borax, 3 parts of stone powder, 12 parts of low-temperature frit, 3 parts of zirconia, Zinc oxide 4 parts, yttrium oxide 2 parts.

[0080] The low-temperature frit includes the following raw materials in parts by weight: 25 parts of mullite, 10 parts of wollastonite, 8 parts of siderit...

Embodiment 3

[0100] Disclosed is an overglaze craft porcelain with no cracks on the glaze surface, comprising a body and glaze, and the thickness of the glaze is 0.4mm.

[0101] The green body includes the following raw materials in parts by weight: 24 parts of potassium feldspar, 20 parts of halloysite, 37 parts of Dehua quartz, 12 parts of diatomite, 12 parts of dolomite, 6 parts of vermiculite, 4 parts of hematite, nitrogen 6 parts of boron oxide, 2 parts of lanthanum oxide, 1.5 parts of zirconium silicate, and 0.6 parts of yttrium oxide.

[0102] The glaze includes the following raw materials in parts by weight: 35 parts of quartzite, 20 parts of sillimanite, 13 parts of sepiolite, 12 parts of dolomite, 6 parts of borax, 4 parts of stone powder, 11 parts of low-temperature frit, 2 parts of zirconia, 6 parts of zinc oxide, 1.5 parts of yttrium oxide.

[0103] The low-temperature frit includes the following raw materials in parts by weight: 22 parts of mullite, 13 parts of wollastonite,...

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Abstract

The invention relates to a preparation process of overglaze color craft porcelain with a non-cracking glaze surface. The overglaze color craft porcelain comprises a green body and glaze, wherein the glaze comprises the following raw materials: quartz stone, sillimanite, sepiolite, dolomite, borax, stone powder, low-temperature frit, zirconium oxide, zinc oxide and yttrium oxide. The thermal expansion coefficients of sepiolite and sillimanite in the glaze are small; therefore, the thermal expansion coefficient of the glaze can be reduced through the matching of the two; the thermal expansion coefficient of the glaze is smaller than that of the green body; besides, the stone powder can improve the fineness of the glaze and improve the aesthetics of glazed surfaces; meanwhile, the glaze alsocomprises a low-temperature frit, which is prepared by calcining, so that the firing temperature of the glaze can be effectively reduced; in addition, the thermal expansion coefficient of wollastonitein the low-temperature frit is small, the thermal expansion coefficient of the glaze can be further reduced, the thermal expansion coefficient of the glaze is smaller than that of a green body, cracking of the glaze during firing is avoided, and the attractiveness of the glaze surface of the craft porcelain is guaranteed.

Description

technical field [0001] The invention belongs to the field of craft porcelain preparation, and in particular relates to a preparation process of overglaze color craft porcelain with no cracks on the glaze surface. Background technique [0002] The ceramic industry is a large energy consumer, which accounts for a large proportion of energy consumption. Reducing the energy consumption of ceramic production is a long-term and important task for the ceramic industry. Among all energy consumption methods, reducing the firing temperature of the green body, Achieving low-temperature fast firing is a fundamental solution to excessive energy consumption, and its superiority has formed a consensus in the ceramic industry. [0003] Overglaze coloring is one of the main decorative techniques of ceramics. It uses various colored materials to draw various patterns on the glaze of fired porcelain, and then enters the kiln for the second time, usually including painted porcelain, colored dec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14C04B35/622C04B41/86C03C8/20C03C8/02
CPCC04B35/14C04B35/622C04B41/009C04B41/5022C04B41/86C03C8/20C03C8/02C04B2235/349C04B2235/321C04B2235/386C04B2235/3227C04B2235/3248C04B2235/3225C04B2235/656C04B2235/6567C04B2235/658C04B2235/6583C04B41/4535C04B41/0072Y02P40/60
Inventor 苏昆仑
Owner FUJIAN PROVINCE DEHUA ZHENNAN CERAMIC CO LTD