Preparation method of Jun porcelain with natural cracks

A preparation process and natural crack technology, which is applied in the field of Jun porcelain preparation technology with natural cracks, can solve the problems of difficult firing, complicated production process, and low rate of Jun porcelain treasures, and achieve the effect of preventing shedding

Inactive Publication Date: 2018-01-19
YUZHOU ZHENGYUJUN KILN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production process of Jun porcelain has always been complicated, and it is not easy to fire. From the selection of materials to the firing of finished products, there are many processes to go through. The reason for the extremely low treasure rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1. Put the dried green body into the kiln for firing. When the firing temperature rises to 550°C, close the kiln door, and stop the fire when the temperature continues to rise to 980°C. The heating rate at this stage is 20-2°C / min, take it out after cooling, and get the plain tire;

[0033] Step 2: Attach a layer of 0.1cm-thick green body slurry on the surface of the plain body, and then put it into the kiln again for secondary firing. When the temperature is 550°C, the heating rate is 12-1°C / min. When the temperature rises to 980°C, the heating rate is 5°C. At this time, the heating rate should not be too fast to prevent the outer layer of the green body from falling off;

[0034] Step 3. When the plain embryo after the secondary firing is cooled to 190°C, it is taken out and placed in a constant temperature and pressure container with a pressure of 200MPa and a temperature of 80°C. After being kept warm for 1 hour, it is taken out and naturally cooled to room te...

Embodiment 2

[0045] Step 1. Put the dried green body into the kiln for firing. When the firing temperature rises to 575°C, close the kiln door, and stop the fire when the temperature continues to rise to 990°C. The heating rate at this stage is 21°C / min. Take it out after cooling to get plain tires;

[0046] Step 2: Attach a layer of 0.15cm-thick green body slurry on the surface of the plain body, and then put it into the kiln again for secondary firing. When the temperature is 575°C, the heating rate is 13°C / min, and the temperature rises When the heating rate is as high as 990°C, the heating rate is 6°C. At this time, the heating rate should not be too fast, so as to avoid the outer layer of the green body from falling off;

[0047] Step 3. When the plain embryo after the secondary firing is cooled to 195°C, it is taken out and placed in a container with a pressure of 200MPa and a temperature of 90°C. After being kept warm for 1.5 hours, it is taken out, and naturally cooled to room temp...

Embodiment 3

[0058] Step 1. Put the dried biscuit into the kiln for firing. Close the kiln door when the firing temperature rises to 600°C, and stop the fire when the temperature continues to rise to 1000°C. The heating rate at this stage is 22°C / min. Take it out after cooling to get plain tires;

[0059] Step 2: Attach a layer of 0.2cm-thick green body slurry on the surface of the plain tire, and then put it into the kiln again for secondary firing. When the temperature is 600°C, the heating rate is 14°C / min, and the temperature rises The temperature rise rate is 7°C when the temperature is as high as 1000°C. At this time, the temperature rise rate should not be too fast to avoid the outer layer of the green body from falling off;

[0060] Step 3. When the plain embryo after the secondary firing is cooled to 200°C, take it out and place it in a container with a pressure of 200MPa and a temperature of 100°C, take it out after keeping it warm for 2 hours, and cool it naturally to room tempe...

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Abstract

A preparation method of Jun porcelain with natural cracks comprises specific steps as follows: step 1, a dried biscuit is placed in a kiln for primary firing and a base is obtained; step 2, a layer ofbiscuit material which is 0.1-0.2 cm thick is attached to the surface of the base, and the base is placed in the kiln again for secondary firing; step 3, the base subjected to secondary firing is taken out and placed in a constant-temperature and constant-pressure container after being cooled to 200 DEG C, kept at the constant temperature for 1-2 h, taken out and naturally cooled to the room temperature; step 4, the base subjected to secondary firing is glazed and the glazed base is dried again; step 5, the glazed base is placed in the kiln to be fired, and three stages of glaze firing are performed during firing. The biscuit is subjected to a series of biscuit firing and glaze firing, the strength of the biscuit of Jun porcelain is improved, glazing of the biscuit is facilitated, unevenconcave-convex surfaces occur due to existence of natural cracks on surfaces, and the Jun porcelain is brighter in color gradation due to difference between heating degrees during heating.

Description

technical field [0001] The invention belongs to the field of Jun porcelain, in particular to a preparation process of Jun porcelain with natural cracks. Background technique [0002] Jun kiln is one of the five famous kilns in the Song Dynasty in China. It is on par with Ru, Guan, Ge and Ding kilns. The traditional works of Jun porcelain, such as statues, tripods, bowls, washers, and bottles, are placed in the court room, which is magnificent and full of brilliance; Chen's few cases are pleasing to the eye and elegant. However, the production process of Jun porcelain has always been complicated, and it is not easy to fire. From the selection of materials to the firing of finished products, there are many processes to go through. The reason for the extremely low treasure rate. [0003] The traditional firing method of Jun kiln is to use copper oxide as the colorant and fire at 1280-1300°C. The bisque is firstly fired before being glazed, and then fired after being glazed. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/34C04B41/86
Inventor 王现锋
Owner YUZHOU ZHENGYUJUN KILN CO LTD
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