阅读说明：本技术 一种具有透明釉的实心白瓷的制作工艺及透明釉料 (Manufacturing process of solid white porcelain with transparent glaze and transparent glaze ) 是由 郑雄伟 郑雄彭 于 2019-12-11 设计创作，主要内容包括：为了解决现有技术的不足,本发明提供了一种具有透明釉的实心白瓷的制作工艺及透明釉料。该种用于实心白瓷的透明釉料的原料组分包括：玻璃粉,钾长石,氧化锌、石英,碳酸锂,氧化铜为主。通过对用于实心白瓷的釉料的原料配方与制备方法进行创新,实心白瓷与透明釉在细节上的雕刻表现相得益彰,能所述实心白瓷对透明釉制时间长、与坯体的结合程度高的特点,反应出更优于传统瓷塑的效果。烧制时,通过对烧成温度、升温速率、降温保温等环节进行控制,提高产品烧成率；能降低实心陶瓷的烧成温度、减少实心陶瓷的烧制时间,大幅提高了实行瓷的烧成率,对推动德化白瓷的发展具有积极的意义而且具有积极的经济效益。(In order to solve the defects of the prior art, the invention provides a manufacturing process of solid white porcelain with transparent glaze and the transparent glaze. The transparent glaze for solid white porcelain comprises the following raw material components: glass powder, potassium feldspar, zinc oxide, quartz, lithium carbonate and copper oxide. Through innovating a raw material formula and a preparation method of the glaze for the solid white porcelain, the carving expressions of the solid white porcelain and the transparent glaze on details complement each other, the solid white porcelain has the characteristics of long time for manufacturing the transparent glaze and high combination degree with a blank body, and the reaction is better than the effect of the traditional porcelain plastics. During firing, links such as firing temperature, heating rate, cooling and heat preservation are controlled, so that the firing rate of the product is improved; the firing temperature of the solid ceramic can be reduced, the firing time of the solid ceramic can be reduced, the firing rate of the ceramic is greatly improved, and the ceramic has positive significance for promoting the development of the German white ceramic and positive economic benefit.)

1. The transparent glaze for the solid white porcelain is characterized by comprising the following raw material components: 23-28 parts of glass powder, 23-28 parts of potassium feldspar, 25-35 parts of zinc oxide, 20-25 parts of quartz, 1-3 parts of lithium carbonate and 1-5 parts of copper oxide.

2. The glaze for solid white porcelain of claim 1, which comprises the following raw material components: 24 parts of glass powder, 23 parts of potassium feldspar, 29 parts of zinc oxide, 20 parts of quartz, 1.5 parts of lithium carbonate and 2.5 parts of copper oxide.

3. The glaze for solid white porcelain of claim 1, which comprises the following raw material components: 26 parts of glass powder, 24 parts of potassium feldspar, 25 parts of zinc oxide, 22 parts of quartz, 1.5 parts of lithium carbonate and 1.5 parts of copper oxide.

4. A manufacturing process of solid white porcelain with transparent glaze is used for manufacturing the glaze for solid white porcelain according to any one of the requirements 1-3, and comprises the following specific steps:

step 1, preparing a solid white porcelain blank;

step 2, integrally drying the prepared ceramic-plastic green body until the water content of the ceramic-plastic green body is below 5%;

step 3, preparing a transparent glaze according to the raw material components of the transparent glaze for the solid white porcelain;

step 4, applying a transparent glaze of solid white porcelain on the surface of the ceramic blank, wherein the thickness of the glaze is 0.1-0.3 mm;

and 5, placing the prepared porcelain plastic blank into a kiln for firing, wherein the kiln reaches the firing temperature after 48-52 hours, the firing temperature is 1290-1298 ℃, the temperature is reduced by 20-30 ℃ after the firing temperature is reached, and the temperature is kept for 4-5 hours, and after the kiln is cooled, the glaze for the solid white porcelain is obtained.

5. The process for manufacturing solid white porcelain with transparent glaze according to claim 4, wherein the step of preparing transparent glaze in step 3 is as follows: mixing the raw material components of the transparent glaze according to the proportion, mixing and ball-milling for 20-30 hours, and passing through a 400-mesh and 500-mesh screen to obtain the transparent glaze.

6. The process for manufacturing the solid white porcelain with the transparent glaze according to claim 5, wherein the ball milling time material is mixed in the step 3: water: the proportion of the balls is 1: 1-2: 3-4.

7. the process for making solid white porcelain with transparent glaze according to claim 4, wherein: the glazing process in the step 4 is glaze spraying, and the glaze concentration during glaze spraying is 82-88 Baume.

8. The process for making solid white porcelain with transparent glaze according to claim 7, wherein: and 4, placing the ceramic blank body with the transparent glaze in a drying chamber for standing for 5-10 days after glazing in the step 4, keeping the temperature of the drying chamber at 25-29 ℃ and keeping the relative humidity constant at 35-45%.

9. The process for making solid white porcelain with transparent glaze according to claim 5, wherein: the temperature rise of the kiln in the step 4 is controlled as follows, and the temperature during firing is controlled as follows

In the preheating stage, the temperature of the kiln is increased to 200 ℃ from 8 to 10 hours;

in the temperature rise stage, the temperature of the kiln is raised from 200 ℃ to 1000 ℃ for 30-32 hours;

in the firing stage, the kiln is heated to the firing temperature from 1000 ℃ after 8-10 hours, and the temperature is kept for 10-20 minutes at the firing temperature;

in the cooling and heat preservation stage, the temperature of the kiln is reduced by 20-30 ℃, and the heat is preserved for 4-5 hours;

and in the slow cooling stage, the temperature of the kiln is uniformly cooled to normal temperature after 40-50 hours, and the kiln is taken out.

10. The process for making solid white porcelain with transparent glaze according to claim 9, wherein: and in the temperature reduction and insulation stage, the temperature of the kiln is reduced by 20-30 ℃ at a constant speed for 30-50 minutes.

Technical Field

The invention relates to the technical field of ceramic manufacture, in particular to a glaze for solid white porcelain and a preparation process thereof.

Background

The german porcelain began in the Song dynasty and the Ming dynasty developed greatly. With the prosperity of Buddhism in China, sculpture arts such as immortal Buddha figures and the like arouse great interest of porcelain workers. Yuanzhu, the German porcelain-plastic Buddha statue is very popular. In the future, the art and style of the Chinese porcelain art garden have been developed, and the Chinese porcelain art garden becomes a unique artistic flower.

The Dehua ceramic uses Dehua local kaolin as a raw material, and thick-matrix firing of the Dehua local kaolin is extremely difficult. The solid porcelain-plastic matrix is thick and solid, so that the creators can freely control the carving depth and the smoothness of the texture, and the product has more layering and jumping feeling. But the solid porcelain plastic is difficult to fire and has low yield. In order to solve the problems, the invention patent application of CN104859363A discloses a solid porcelain plastic and a preparation process thereof, the solid porcelain plastic and the preparation process thereof control the moisture content and the firing temperature of a blank, in the specific moisture content control, the existing solid porcelain adopts the traditional blank and glaze, but the glaze has great influence on the firing effect of the solid porcelain in the firing process, firstly, the firing time of the solid porcelain is long, the temperature change is slow, and the firing temperature of the solid porcelain glaze can be reduced by improving the firing temperature of the solid porcelain glaze; secondly, the transparent glaze material needs to be finely assembled with the blank body of the solid porcelain, so that the problems of air bubbles, separation, wrinkles and the like in the firing process are avoided as much as possible, and therefore, the improvement of the glaze material is needed by a porcelain plastics technologist to improve the yield of the solid porcelain plastics manufacturing process, the stability of the manufacturing process and the artistic expression effect of the solid porcelain plastics.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a manufacturing process of solid white porcelain with transparent glaze and the transparent glaze.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the transparent glaze for the solid white porcelain comprises the following raw material components: 23-28 parts of glass powder, 23-28 parts of potassium feldspar, 25-35 parts of zinc oxide, 20-25 parts of quartz, 1-3 parts of lithium carbonate and 1-5 parts of copper oxide

Further, the raw material components of the glaze for the solid white porcelain are as follows: 24 parts of glass powder, 23 parts of potassium feldspar, 29 parts of zinc oxide, 20 parts of quartz, 1.5 parts of lithium carbonate and 2.5 parts of copper oxide.

Further, the raw material components of the glaze for the solid white porcelain are as follows: 26 parts of glass powder, 24 parts of potassium feldspar, 25 parts of zinc oxide, 22 parts of quartz, 1.5 parts of lithium carbonate and 1.5 parts of copper oxide.

A manufacturing process of solid white porcelain with transparent glaze is used for manufacturing the glaze for solid white porcelain, and comprises the following specific steps:

step 1, preparing a solid white porcelain blank;

step 2, integrally drying the prepared ceramic-plastic green body until the water content of the ceramic-plastic green body is below 5%;

step 3, preparing a transparent glaze according to the raw material components of the transparent glaze for the solid white porcelain;

step 4, applying a transparent glaze of solid white porcelain on the surface of the ceramic blank, wherein the thickness of the glaze is 0.1-0.3 mm;

and 5, placing the prepared porcelain plastic blank into a kiln for firing, wherein the kiln reaches the firing temperature after 48-52 hours, the firing temperature is 1290-1298 ℃, the temperature is reduced by 20-30 ℃ after the firing temperature is reached, and the temperature is kept for 4-5 hours, and after the kiln is cooled, the glaze for the solid white porcelain is obtained.

Further, the step of preparing the transparent glaze in step 3 is as follows: mixing the raw material components of the transparent glaze according to the proportion, mixing and ball-milling for 20-30 hours, and passing through a 400-mesh and 500-mesh screen to obtain the transparent glaze.

Further, mixing and ball-milling materials in the step 3: water: the proportion of the balls is 1: 1-2: 3-4.

further, the glazing process in the step 4 is glaze spraying, and the glaze concentration during glaze spraying is 82-88 Baume.

Further, after glazing in the step 4, placing the ceramic blank body with the transparent glaze in a drying chamber for standing for 5-10 days, wherein the temperature of the drying chamber is kept constant at 25-29 ℃, and the relative humidity is kept constant at 35-45%.

Further, the temperature rise of the kiln in the step 4 is controlled as follows

In the preheating stage, the temperature of the kiln is increased to 200 ℃ from 8 to 10 hours;

in the temperature rise stage, the temperature of the kiln is raised from 200 ℃ to 1000 ℃ for 30-32 hours;

in the firing stage, the kiln is heated to the firing temperature from 1000 ℃ after 8-10 hours, and the temperature is kept for 10-20 minutes at the firing temperature;

in the cooling and heat preservation stage, the temperature of the kiln is reduced by 20-30 ℃, and the heat is preserved for 4-5 hours;

and in the slow cooling stage, the temperature of the kiln is uniformly cooled to normal temperature after 40-50 hours, and the kiln is taken out.

Further, in the temperature reduction and insulation stage, the temperature of the kiln is reduced by 20-30 ℃ at a constant speed for 30-50 minutes.

According to the glaze for the solid white porcelain, the raw material formula and the preparation method of the glaze for the solid white porcelain are innovated, the carving expressions of the solid white porcelain and the transparent glaze on the details complement each other, the solid white porcelain has the characteristics of long transparent glaze making time and high combination degree with a blank body, and the reaction effect is better than that of the traditional porcelain plastic. During firing, links such as firing temperature, heating rate, cooling and heat preservation are controlled, so that the firing rate of the product is improved; when the glaze for the solid white porcelain is used for firing trial porcelain, the firing temperature of the solid porcelain can be reduced, the firing time of the solid porcelain can be reduced, the firing rate of the solid porcelain is greatly improved, and the glaze has positive significance for promoting the development of the German white porcelain and has positive economic benefits.

Detailed Description

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

The transparent glaze for the solid white porcelain comprises the following raw material components: 23-28 parts of glass powder, 23-28 parts of potassium feldspar, 25-35 parts of zinc oxide, 20-25 parts of quartz, 1-3 parts of lithium carbonate and 1-5 parts of copper oxide.

The manufacturing process for the solid white porcelain by using the glaze for the solid white porcelain comprises the following specific steps:

step 1, preparing a solid white porcelain blank;

step 2, integrally drying the prepared ceramic-plastic green body until the water content of the ceramic-plastic green body is below 5%;

step 3, preparing the transparent glaze according to the raw material components of the transparent glaze for the solid white porcelain, wherein the steps for preparing the transparent glaze are as follows: mixing the raw material components of the transparent glaze in proportion, mixing and ball-milling for 20-30 hours, wherein the mixing and ball-milling materials are as follows: water: the proportion of the balls is 1: 1-2: 3-4, passing through a 400-mesh and 500-mesh screen to obtain a transparent glaze;

step 4, applying transparent glaze of solid white porcelain on the surface of the ceramic blank, wherein the thickness of the glaze is 0.1-0.3 mm, the glazing process is glaze spraying, the glaze concentration during glaze spraying is 82-88 Baume, placing the ceramic blank applied with the transparent glaze in a drying chamber, standing for 5-10 days, keeping the temperature of the drying chamber constant at 25-29 ℃, and keeping the relative humidity constant at 35-45%;

step 5, placing the prepared porcelain plastic blank into a kiln for firing, wherein the kiln reaches the firing temperature after 48-52 hours, the firing temperature is 1290-1298 ℃, and the temperature is reduced by 20-30 ℃ after reaching the firing temperature and then is kept for 4-5 hours, and the firing control is as follows:

in the preheating stage, the temperature of the kiln is increased to 200 ℃ from 8 to 10 hours;

in the temperature rise stage, the temperature of the kiln is raised from 200 ℃ to 1000 ℃ for 30-32 hours;

in the firing stage, the kiln is heated to the firing temperature from 1000 ℃ after 8-10 hours, and the temperature is kept for 10-20 minutes at the firing temperature;

in the cooling and heat preservation stage, the temperature of the kiln is reduced by 20-30 ℃ at a constant speed for 30-50 minutes, and the heat is preserved for 4-5 hours;

and in the slow cooling stage, the temperature of the kiln is reduced to normal temperature at a constant speed for 40-50 hours, and the solid white porcelain with the transparent glaze is obtained after being taken out of the kiln.