阅读说明：本技术 一种釉面不龟裂的釉上彩工艺瓷的制备工艺 (Preparation process of non-cracking glaze-surface over-glaze decoration craft porcelain ) 是由 苏昆仑 于 2019-09-29 设计创作，主要内容包括：一种釉面不龟裂的釉上彩工艺瓷的制备工艺,釉上彩工艺瓷包括坯体和釉料,釉料包括以下原料：石英岩、夕线石、海泡石、白云石、硼砂、石粉、低温熔块、氧化锆、氧化锌、氧化钇,釉料中的海泡石、夕线石的热膨胀系数小,通过二者的配合可降低釉料的热膨胀系数,使釉料热膨胀系数小于坯体的热膨胀系数,石粉可以提高釉料的细腻度,增加釉面的美观,同时釉料中还包括有低温熔块,低温熔块通过煅烧制成,可有效降低釉料的烧成温度,低温熔块中的硅灰石的热膨胀系数小,可进一步降低釉料的热膨胀系数,使釉料热膨胀系数小于坯体的热膨胀系数,保证釉料烧制时,不会龟裂,保证工艺瓷的釉面的美观。(A preparation technology of an over-glaze decoration craft porcelain with a non-cracking glaze surface comprises a blank body and a glaze material, wherein the glaze material comprises the following raw materials: the glaze comprises quartz rock, sillimanite, sepiolite, dolomite, borax, mountain flour, low-temperature frits, zirconium oxide, zinc oxide and yttrium oxide, wherein the sepiolite and the sillimanite in the glaze have small thermal expansion coefficients, the thermal expansion coefficient of the glaze can be reduced through the matching of the sepiolite and the sillimanite, the thermal expansion coefficient of the glaze is smaller than that of a blank body, the mountain flour can improve the fineness of the glaze and increase the attractiveness of the glaze, meanwhile, the glaze also comprises the low-temperature frits, the low-temperature frits are prepared through calcination, the firing temperature of the glaze can be effectively reduced, the thermal expansion coefficient of wollastonite in the low-temperature frits 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 the blank body, cracking is avoided when the.)

1. A preparation process of an over-glaze decoration craft porcelain with a non-cracking glaze surface is characterized by comprising the following steps: the glaze-colored craft porcelain comprises a blank body and a glaze material,

the blank body comprises the following raw materials in parts by weight: 22-25 parts of potash feldspar, 18-22 parts of halloysite, 35-40 parts of germanized quartz, 10-15 parts of diatomite, 10-15 parts of dolomite, 5-8 parts of vermiculite, 3-5 parts of hematite, 4-8 parts of boron nitride, 1-3 parts of lanthanum oxide, 1-2 parts of zirconium silicate and 0.5-0.8 part of yttrium oxide;

the glaze comprises the following raw materials in parts by weight: 30-40 parts of quartzite, 18-22 parts of sillimanite, 12-15 parts of sepiolite, 10-15 parts of dolomite, 5-8 parts of borax, 3-5 parts of stone powder, 10-12 parts of low-temperature frit, 1-3 parts of zirconia, 4-8 parts of zinc oxide and 1-2 parts of yttrium oxide;

the preparation process comprises the following steps:

weighing and proportioning raw materials according to a raw material formula of a blank, and respectively crushing, sieving and performing wet ball milling to prepare blank slurry;

step two, weighing and mixing the raw materials of the low-temperature frit uniformly, putting the mixture into a smelting furnace, smelting the mixture into the low-temperature frit at the temperature of 1150-,

weighing and batching the raw materials except the low-temperature frit of the glaze, respectively crushing, sieving and uniformly mixing the raw materials, and performing wet ball milling on the raw materials and the quenched low-temperature frit to prepare glaze slurry;

step four, preparing the blank slurry prepared in the step one into a blank body;

step five, the green body is sent into a kiln and is biscuited for 7-9h at the temperature of 980-;

step six, applying the glaze slip prepared in the step three on the surface of the biscuit;

and seventhly, after the glaze slurry on the surface of the biscuit is dried, putting the biscuit into a kiln, and firing and forming the biscuit in a reducing atmosphere at the firing temperature of 1130-.

2. The process for preparing the non-cracking glazed artistic porcelain according to claim 1, wherein the process comprises the following steps: the low-temperature frit comprises the following raw materials in parts by weight: 20-25 parts of mullite, 10-15 parts of wollastonite, 5-8 parts of siderite, 3-5 parts of boric acid, 4-8 parts of magnesium oxide, 1-3 parts of calcium carbonate, 1-2 parts of titanium oxide and 0.5-0.8 part of cobalt oxide.

3. The process for preparing the non-cracking glazed artistic porcelain according to claim 1, wherein the process comprises the following steps: in the seventh step, the firing is controlled as follows:

and (3) low-temperature stage: raising the temperature in the kiln from normal temperature to 300 +/-10 ℃, and burning for 50-70 min;

and (3) decomposition and oxidation stage: heating the kiln to 950 +/-5 ℃ for 3.5-4.5 hours;

and (3) a high-temperature strong reduction stage: heating the kiln to 1145 +/-15 ℃ for 3.8-4.2 hours;

and (3) high-fire heat preservation stage: controlling the temperature in the kiln to be 1145 +/-15 ℃, and burning the kiln for 1.8-2.2 hours;

and (3) natural cooling stage: cooling in the kiln to 30-60 deg.c for over 8 hr.

4. The process for preparing the non-cracking glazed artistic porcelain according to claim 1, wherein the process comprises the following steps: when wet ball milling is performed on the blank slurry in the first step, wet grinding is performed on the raw materials in a ball mill for 18-20 hours, the grinding medium is water, and the raw materials are as follows: ball: water-1: 1.2-1.5: 0.8-1.

5. The process for preparing the non-cracking glazed artistic porcelain according to claim 1, wherein the process comprises the following steps: when wet ball milling is carried out on the glaze slip in the third step, the raw materials are ground in a ball mill for 24-30h, the grinding medium is water, and the raw materials are as follows: ball: water-1: 1.8-2: 1-1.2.

6. The process for preparing the non-cracking glazed artistic porcelain according to claim 1, wherein the process comprises the following steps: the forming method of the green body in the fourth step is hand-pulling green body forming or rolling forming or slip casting forming.

7. The process for preparing the non-cracking glazed artistic porcelain according to claim 1, wherein the process comprises the following steps: in the sixth step, the glazing mode of the glaze slurry is glaze pouring or glaze dipping.

8. The process for preparing the non-cracking glazed artistic porcelain according to claim 1, wherein the process comprises the following steps: the thickness of the glaze is 0.3-0.5 mm.

Technical Field

The invention belongs to the field of preparation of craft porcelain, and particularly relates to a preparation process of an over-glaze decoration craft porcelain with a non-cracking glaze surface.

Background

The ceramic industry is an energy-consuming household, occupies a large proportion of energy consumption, and the reduction of the energy consumption of ceramic production is a long-term and important task in the ceramic industry.

The glazing technique is one of the main decoration techniques of ceramics, and is characterized by that it uses various colour materials to draw various decorations on the fired porcelain glaze, then makes the porcelain glaze go into the kiln for two times, and usually includes coloured drawing porcelain, coloured decoration porcelain, blue and white colored porcelain, five-colour porcelain, pink porcelain, coloured gold porcelain and enamel colour, etc.. The glaze for glazing color is required to have strong adhesive force, can be effectively attached to the glaze surface of porcelain, has excellent corrosion resistance, wear resistance and weather resistance, and has good pattern rendering effect.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a preparation process of an overglaze color craft porcelain with a non-cracking glaze surface.

The invention adopts the following technical scheme:

a process for preparing the technical enamel with non-cracking surface includes such steps as preparing raw enamel, coating the raw enamel on the raw enamel,

the blank body comprises the following raw materials in parts by weight: 22-25 parts of potash feldspar, 18-22 parts of halloysite, 35-40 parts of germanized quartz, 10-15 parts of diatomite, 10-15 parts of dolomite, 5-8 parts of vermiculite, 3-5 parts of hematite, 4-8 parts of boron nitride, 1-3 parts of lanthanum oxide, 1-2 parts of zirconium silicate and 0.5-0.8 part of yttrium oxide;

the glaze comprises the following raw materials in parts by weight: 30-40 parts of quartzite, 18-22 parts of sillimanite, 12-15 parts of sepiolite, 10-15 parts of dolomite, 5-8 parts of borax, 3-5 parts of stone powder, 10-12 parts of low-temperature frit, 1-3 parts of zirconia, 4-8 parts of zinc oxide and 1-2 parts of yttrium oxide;

the preparation process comprises the following steps:

weighing and proportioning raw materials according to a raw material formula of a blank, and respectively crushing, sieving and performing wet ball milling to prepare blank slurry;

step two, weighing and mixing the raw materials of the low-temperature frit uniformly, putting the mixture into a smelting furnace, smelting the mixture into the low-temperature frit at the temperature of 1150-,

weighing and batching the raw materials except the low-temperature frit of the glaze, respectively crushing, sieving and uniformly mixing the raw materials, and performing wet ball milling on the raw materials and the quenched low-temperature frit to prepare glaze slurry;

step four, preparing the blank slurry prepared in the step one into a blank body;

step five, the green body is sent into a kiln and is biscuited for 7-9h at the temperature of 980-;

step six, applying the glaze slip prepared in the step three on the surface of the biscuit;

and seventhly, after the glaze slurry on the surface of the biscuit is dried, putting the biscuit into a kiln, and firing and forming the biscuit in a reducing atmosphere at the firing temperature of 1130-.

Further, the low-temperature frit comprises the following raw materials in parts by weight: 20-25 parts of mullite, 10-15 parts of wollastonite, 5-8 parts of siderite, 3-5 parts of boric acid, 4-8 parts of magnesium oxide, 1-3 parts of calcium carbonate, 1-2 parts of titanium oxide and 0.5-0.8 part of cobalt oxide.

Further, in the seventh step, the firing is controlled as follows:

and (3) low-temperature stage: raising the temperature in the kiln from normal temperature to 300 +/-10 ℃, and burning for 50-70 min;

and (3) decomposition and oxidation stage: heating the kiln to 950 +/-5 ℃ for 3.5-4.5 hours;

and (3) a high-temperature strong reduction stage: heating the kiln to 1145 +/-15 ℃ for 3.8-4.2 hours;

and (3) high-fire heat preservation stage: controlling the temperature in the kiln to be 1145 +/-15 ℃, and burning the kiln for 1.8-2.2 hours;

and (3) natural cooling stage: cooling in the kiln to 30-60 deg.c for over 8 hr.

Further, when wet ball milling is performed on the blank slurry in the step one, the raw materials are wet-milled for 18-20 hours in a ball mill, the milling medium is water, and the raw materials: ball: water-1: 1.2-1.5: 0.8-1.

Further, when wet ball milling is performed on the glaze slip in the third step, the raw materials are wet-milled for 24-30 hours in a ball mill, the milling medium is water, and the raw materials: ball: water-1: 1.8-2: 1-1.2.

Further, the forming method of the green body in the fourth step is hand-pulling green body forming or rolling forming or slip casting forming.

Further, in the sixth step, the glazing mode of the glaze slurry is glaze pouring or glaze dipping.

Further, the thickness of the glaze is 0.3-0.5 mm.

As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: the sepiolite and the sillimanite in the glaze have small thermal expansion coefficients, the thermal expansion coefficient of the glaze can be reduced by matching the sepiolite and the sillimanite, so that the thermal expansion coefficient of the glaze is smaller than that of the blank, the stone powder can improve the fineness of the glaze and increase the attractiveness of the glaze, and meanwhile, the glaze also comprises the low-temperature frit which is prepared by calcining.

Detailed Description

The invention is further described below by means of specific embodiments.

A non-cracking glazed artistic porcelain comprises a blank and a glaze material, wherein the thickness of the glaze material is 0.3-0.5 mm.

The blank body comprises the following raw materials in parts by weight: 22-25 parts of potash feldspar, 18-22 parts of halloysite, 35-40 parts of germanized quartz, 10-15 parts of diatomite, 10-15 parts of dolomite, 5-8 parts of vermiculite, 3-5 parts of hematite, 4-8 parts of boron nitride, 1-3 parts of lanthanum oxide, 1-2 parts of zirconium silicate and 0.5-0.8 part of yttrium oxide.

The glaze comprises the following raw materials in parts by weight: 30-40 parts of quartzite, 18-22 parts of sillimanite, 12-15 parts of sepiolite, 10-15 parts of dolomite, 5-8 parts of borax, 3-5 parts of stone powder, 10-12 parts of low-temperature frit, 1-3 parts of zirconia, 4-8 parts of zinc oxide and 1-2 parts of yttrium oxide.

The low-temperature frit comprises the following raw materials in parts by weight: 20-25 parts of mullite, 10-15 parts of wollastonite, 5-8 parts of siderite, 3-5 parts of boric acid, 4-8 parts of magnesium oxide, 1-3 parts of calcium carbonate, 1-2 parts of titanium oxide and 0.5-0.8 part of cobalt oxide.

The preparation process comprises the following steps:

weighing and proportioning raw materials according to a raw material formula of a blank, and respectively crushing, sieving and performing wet ball milling to prepare blank slurry;

step two, weighing and mixing the raw materials of the low-temperature frit uniformly, putting the mixture into a smelting furnace, smelting the mixture into the low-temperature frit at the temperature of 1150-,

weighing and batching the raw materials except the low-temperature frit of the glaze, respectively crushing, sieving and uniformly mixing the raw materials, and performing wet ball milling on the raw materials and the quenched low-temperature frit to prepare glaze slurry;

step four, preparing the blank slurry prepared in the step one into a blank body;

step five, the green body is sent into a kiln and is biscuited for 7-9h at the temperature of 980-;

step six, applying the glaze slip prepared in the step three on the surface of the biscuit;

and seventhly, after the glaze slurry on the surface of the biscuit is dried, putting the biscuit into a kiln, and firing and forming the biscuit in a reducing atmosphere at the firing temperature of 1130-.

Specifically, in the seventh step, the firing is controlled as follows:

and (3) low-temperature stage: raising the temperature in the kiln from normal temperature to 300 +/-10 ℃, and burning for 50-70 min;

and (3) decomposition and oxidation stage: heating the kiln to 950 +/-5 ℃ for 3.5-4.5 hours;

and (3) a high-temperature strong reduction stage: heating the kiln to 1145 +/-15 ℃ for 3.8-4.2 hours;

and (3) high-fire heat preservation stage: controlling the temperature in the kiln to be 1145 +/-15 ℃, and burning the kiln for 1.8-2.2 hours;

and (3) natural cooling stage: cooling in the kiln to 30-60 deg.c for over 8 hr.

When wet ball milling is carried out on the blank slurry in the first step, the raw materials are wet-milled for 18-20h in a ball mill, the milling medium is water, and the raw materials are as follows: ball: water-1: 1.2-1.5: 0.8-1.

When wet ball milling is carried out on the glaze slip in the third step, the raw materials are ground in a ball mill for 24-30h, the grinding medium is water, and the raw materials are as follows: ball: water-1: 1.8-2: 1-1.2.

The forming method of the blank body in the fourth step is hand-pulling blank forming or rolling forming or slip casting forming.

In the sixth step, the glazing mode of the glaze slurry is glaze spraying or glaze dipping.