Formula of starry sky glaze and firing manufacturing method
Technical Field
The invention relates to the technical field of ceramics, in particular to a starry sky glaze formula and a firing manufacturing method.
Background
The glaze is widely applied to daily life of people due to good smoothness, the key of the Jun porcelain lies in the porcelain glaze, glaze color changes generated by different firing processes are different, the formula of the glaze is also an important factor influencing the external color of a Jun porcelain finished product, and the formula of the glaze is also a key factor causing that the Jun porcelain enters one color in a kiln and leaves the kiln with multiple colors.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a starry sky glaze formula and a firing manufacturing method, the preparation method is simple, the prepared starry sky glaze Jun porcelain surface can refract a glaze effect of colorful brilliance under light, the yield is high, and the ornamental value is high.
In order to achieve the purpose, the invention is realized by the following technical scheme: the starry sky glaze comprises a ground glaze material and a surface glaze material, wherein the ground glaze material comprises the following raw materials in percentage by weight: 15% of potassium feldspar, 15% of albite, 23% of quartz, 7.5% of kaolin, 3% of dolomite, 5.5% of calcium carbonate, 5% of barium carbonate, 8% of glass, 9% of zirconium silicate and 9% of black material; the overglaze glaze material consists of the following raw materials in percentage by weight: 16% of A-38 feldspar, 16% of albite, 3.6% of Hunan black clay, 1% of zinc oxide, 3% of talcum, 2% of magnesium carbonate, 1.2% of calcium borate, 40% of bone ash, 4% of iron oxide, 3.2% of cerium oxide, 4% of boron carbonate and 6% of phosphor powder.
A starry sky glaze formula and a firing manufacturing method thereof comprise the following steps:
1. mixing the ground glaze material with water to prepare ground glaze water, and mixing the overglaze material with water to prepare overglaze water;
2. biscuit firing is carried out firstly, then base glaze water is applied to the porcelain blank body for base glaze firing, then overglaze glaze is applied to the porcelain blank body for overglaze firing, and finally polishing treatment is carried out.
The biscuiting step is as follows: firstly firing the porcelain blank body at 1-300 ℃ for 2 hours, then firing at 300-550 ℃ for 2 hours, and finally firing at 550-700 ℃ for 1.5 hours to finish bisque firing.
The method comprises the following specific steps of glaze firing of the ground coat: then plain firing is carried out, then scrubbing and air drying are carried out by clear water, the porcelain body on which the ground glaze water is applied in a glaze pouring mode is fired for 2.2 hours at the temperature of 1-300 ℃, is fired for 2 hours at the temperature of 600-.
The glaze firing of the overglaze comprises the following specific steps: after firing the ground glaze, heating to 100 ℃, spraying surface glaze water (in dense spots), naturally drying, then firing in a kiln, gradually raising the temperature, firing at 1-300 ℃ for 2.2 hours, firing at 300-600 ℃ for 2 hours, firing at 900-1100 ℃ for 2 hours, firing at 1100-1200 ℃ for 1 hour, and preserving the heat at 1200 ℃ for 20 minutes.
The invention has the beneficial effects that: the firing method is simple and reliable, the starry sky glaze Jun porcelain prepared by firing is bright and smooth in glaze color, high in glossiness, exquisite and bright, the appearance is just like starry sky, a glaze effect with seven-color brilliance is refracted under light, and the ornamental value is high.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The specific implementation mode adopts the following technical scheme: the starry sky glaze comprises a ground glaze material and a surface glaze material, wherein the ground glaze material comprises the following raw materials in percentage by weight: 15% of potassium feldspar, 15% of albite, 23% of quartz, 7.5% of kaolin, 3% of dolomite, 5.5% of calcium carbonate, 5% of barium carbonate, 8% of glass, 9% of zirconium silicate and 9% of black material; the overglaze glaze material consists of the following raw materials in percentage by weight: 16% of A-38 feldspar, 16% of albite, 3.6% of Hunan black clay, 1% of zinc oxide, 3% of talcum, 2% of magnesium carbonate, 1.2% of calcium borate, 40% of bone ash, 4% of iron oxide, 3.2% of cerium oxide, 4% of boron carbonate and 6% of phosphor powder.
A starry sky glaze formula and a firing manufacturing method thereof comprise the following steps:
1. mixing the ground glaze material with water to prepare ground glaze water, and mixing the overglaze material with water to prepare overglaze water;
2. biscuit firing is carried out firstly, then base glaze water is applied to the porcelain blank body for base glaze firing, then overglaze glaze is applied to the porcelain blank body for overglaze firing, and finally polishing treatment is carried out.
It is noted that the bisque firing step is specifically as follows: firstly firing the porcelain blank body at 1-300 ℃ for 2 hours, then firing at 300-550 ℃ for 2 hours, and finally firing at 550-700 ℃ for 1.5 hours to finish bisque firing.
It is worth noting that the specific steps of the glaze firing of the ground glaze are as follows: then plain firing is carried out, then scrubbing and air drying are carried out by clear water, the porcelain body on which the ground glaze water is applied in a glaze pouring mode is fired for 2.2 hours at the temperature of 1-300 ℃, is fired for 2 hours at the temperature of 600-.
In addition, the specific steps of glaze firing of the overglaze are as follows: after firing the ground glaze, heating to 100 ℃, spraying surface glaze water (in dense spots), naturally drying, then firing in a kiln, gradually raising the temperature, firing at 1-300 ℃ for 2.2 hours, firing at 300-600 ℃ for 2 hours, firing at 900-1100 ℃ for 2 hours, firing at 1100-1200 ℃ for 1 hour, and preserving the heat at 1200 ℃ for 20 minutes.
In the specific embodiment, the porcelain is scrubbed and dried by clear water after biscuit firing, then is glazed in a glaze spraying mode, the porcelain after glaze firing is heated to 100 ℃, is taken out, is sprayed with surface glaze in a dense point shape, is naturally dried, is fired in a kiln, and finally is subjected to surface polishing treatment, so that the starry sky glaze is manufactured.
The firing method of the specific embodiment is simple and reliable, and the starry sky glaze Jun porcelain fired is bright and translucent in glaze color, high in glossiness, exquisite and bright, as starry sky in appearance, and high in ornamental value, and refracts a glaze effect with seven-color brilliance under light.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.