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Piebald crystalline glaze and firing method thereof

A crystallized glaze and mottled technology, applied in the field of mottled crystallized glaze and its firing, can solve the problems of undefined size range and shape of macroscopic crystals, achieve various colors, reduce firing difficulty, and simple system

Inactive Publication Date: 2019-07-16
WUXI INST OF ARTS & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the firing system, the cooling rate is very fast, about 23°C per minute, but the formula is mainly manganese crystals, and the size range and shape of the macroscopic crystals under this firing system are not clear.

Method used

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  • Piebald crystalline glaze and firing method thereof
  • Piebald crystalline glaze and firing method thereof
  • Piebald crystalline glaze and firing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A mottled crystal glaze only comprises the following components in parts by weight: 20 parts of glass powder, 22 parts of zinc oxide, 50 parts of potassium feldspar, and 7 parts of dolomite. Coloring accelerator: 4 parts of nickelous oxide and copper oxide. Glaze is applied on pottery blanks such as purple sand blanks, and can also be used on white pottery blanks.

[0052] A firing method for piebald crystal glaze, comprising the following steps:

[0053] 1) After the raw materials are weighed according to the formula, all the raw materials except zinc oxide are poured into the ball mill tank, according to the material: ball: water = 1: 1.5: 1.2 and quickly ball milled for 6 minutes;

[0054] 2) Add the weighed zinc oxide to the ball-milled glaze obtained in step 1), and continue ball-milling for 2 minutes;

[0055] 3) pass the glaze obtained in step 2) through an 80-mesh sieve, and set aside;

[0056] 4) Dip or spray glaze on the surface of the product, the thicknes...

Embodiment 2

[0060] A mottled crystal glaze, which only contains the following components in parts by weight: 30 parts of glass powder, 20 parts of zinc oxide, 41 parts of potassium feldspar, 10 parts of calcite, and a coloring crystal accelerator: 6 parts in total of nickelous oxide and iron oxide . Glaze is applied on white clay clay with low iron content.

[0061] A firing method for piebald crystal glaze, comprising the following steps:

[0062] 1) After the raw materials are weighed according to the formula, all raw materials except zinc oxide are poured into the ball mill tank, according to the material: ball: water = 1: 1.5: 1.0 rapid ball mill for 6 minutes;

[0063] 2) Add the weighed zinc oxide to the ball-milled glaze obtained in step 1), and continue ball-milling for 2 minutes;

[0064] 3) pass the glaze obtained in step 2) through an 80-mesh sieve, and set aside;

[0065] 4) Dip or spray glaze on the surface of the product, the thickness of the glaze layer is 1.0mm;

[006...

Embodiment 3

[0069] A mottled crystal glaze, which only comprises the following components in parts by weight: 20 parts of glass powder, 25 parts of pure zinc oxide, 50 parts of potassium feldspar, 10 parts of calcite, 2 parts of kaolin and 4 parts of flux. The colored crystal accelerator is 5 parts of nickelous oxide and iron oxide.

[0070] Adding kaolin as an additive is to improve the suspension stability of the glaze, and adding flux is to reduce the viscosity of the high-temperature glaze melt, reduce the crystal growth resistance, and make the surface smoother and more beautiful.

[0071] The flux is any carbonate of lithium, sodium and potassium.

[0072] A firing method for piebald crystal glaze, comprising the following steps:

[0073] 1) After the raw materials are weighed according to the formula, all raw materials except zinc oxide are poured into the ball mill tank, according to the material: ball: water = 1: 1.5: 1.0 rapid ball mill for 6 minutes;

[0074] 2) Add the weigh...

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Abstract

The invention discloses formula composition of piebald crystalline glaze. Components of the formula composition of the piebald crystalline glaze only comprise glass powder, zinc oxide, potassium feldspar, dolomite, calcite and a coloring crystallization-promoting agent. Meanwhile, a high-temperature uninsulated firing system of the piebald crystalline glaze is provided. By changing the componentsof traditional crystalline glaze and changing a traditional thought of long-time thermal insulation necessary to firing of coarse-grain crystalline glaze cooperatively, under conditions of supercooling below 400 DEG C and an average cooling rate of 120-210 DEG C / h, the artistic crystalline glaze with bright glaze and a flower-like crystal habit can also be produced, the diameter of crystal flowersis about 3-10 mm, the external boundary is obvious, the interior is radial, and the glaze has a multi-color effect. The technology has the significant characters that the firing system is simple, andenergy consumption is reduced, and is especially suitable for small and medium devices, and application prospects are wild.

Description

technical field [0001] The invention relates to a crystalline glaze and a production process thereof, in particular to a mottled crystalline glaze and a firing method thereof. Background technique [0002] With the improvement of people's life taste and art appreciation ability, the decoration requirements of ceramic products are also correspondingly improved. Ceramic crystal glaze is popular because of its difficult system, high-end atmosphere, and high artistic value. The products include various crystal flowers and colorful background colors. Many furnishings are collected by museums. Small and medium-sized ceramic vases have become the new favorites on tea tables and desks. [0003] At present, there has been a general consensus in the literature on the crystallization glaze process, that is, high temperature and long-term heat preservation are crucial to the growth of coarse-grained crystals, and even play a decisive role. For example, in the document Ceramic Glaze Co...

Claims

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Application Information

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IPC IPC(8): C03C8/00C04B33/34C04B41/86
CPCC03C8/00C04B33/34C04B41/86C04B41/5022C04B2235/6565C04B2235/6567C04B2235/661
Inventor 王超陈富强邵汉强王丹丹
Owner WUXI INST OF ARTS & TECH
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