Introduction to knowledge of thin-walled porcelain

Thin-embryo porcelain is also called. Out of porcelain? 、? Eggshell porcelain? . It is one of the famous special craft products among the traditional famous porcelain varieties in Jingdezhen. So, what do you know about thin-walled porcelain? The following is a knowledge introduction of thin-walled porcelain that I have compiled for you, hoping to help you.

Artistic characteristics of thin-walled porcelain

There are many kinds of glazes on porcelain, and thin-embryo porcelain is one of them. Thin-embryo porcelain, also known as bodiless porcelain, is used to describe that it is so thin that it can hardly be lifted. The production requirements of thin-walled porcelain are extremely high, among which trimming is the most difficult and key. After the green body is formed, when the glaze hanging in the container is dry, that is, the green body on the surface without glaze hanging is scraped off, and almost only one layer of glaze is left, and then the scraped surface is coated with glaze juice. Take off the blank and put it on the basket, and repeat it one hundred times before you can repair the blank with a thickness of two or three millimeters to the eggshell. After burning, look carefully at the porcelain and it seems that the fetal bone has been removed, hence the name? Born? . During Yongle period, Jingdezhen kiln began to make thin-walled porcelain, which made great achievements during Chenghua period; During the period of Qin Long and Wanli, even some advanced folk kilns were able to produce high-quality thin-walled porcelain with special names such as thin-walled porcelain, summer lamp and preserved egg cup.

From batching, drawing, smelting (cutting), glazing to painting and firing, it takes more than 40 processes, all of which are fired by hand in three times. It is especially beneficial to blank space and artistic processing. After rough cutting, fine cutting and fine cutting, the rough blank with a thickness of two or three millimeters can be cut to about 0.5 mm, and the thickness of the carcass is mostly within 1 mm, which is called: as thin as cicada wings, as bright as glass and as light as clouds. It is light, beautiful, exquisite in workmanship and good in light transmission. It is one of the famous traditional porcelains in Jingdezhen, China. There are blue and white patterns on the thin tire (see blue and white porcelain), which is called blue and white thin tire porcelain; Painted with pastel patterns (see pastel porcelain), it is called pastel thin-walled porcelain. Yongle period of Ming dynasty (1403? 1424), Jingdezhen made thin-walled porcelain, which had made great achievements in Chenghua years, and in Wanli years (1573? 1620)? Egg curtain cup? In the Qing Dynasty, we began to formally produce exquisite products such as cups as thin as eggshells and glow lamps. In addition to Jingdezhen, Liling, Hunan, Fengxi, Guangdong, Tangshan, Hebei and Jiangyin, Jiangsu can now produce thin-walled porcelain. After the founding of the People's Republic of China, the technology of thin-shell porcelain has been inherited and developed, and the thickness, transmittance and whiteness of many products have reached or exceeded the highest level in history. In addition to Jingdezhen, Liling, Hunan, Fengxi, Guangdong, Tangshan, Hebei and Jiangyin, Jiangsu can now produce thin-walled porcelain.

Innovation and application of traditional thin-shell porcelain technology

1. Compared with modern technology, thin-shell porcelain is made by traditional technology.

Traditional hand-made thin-walled porcelain requires a strong technical content, and every step of the process, such as selecting materials, drawing blanks, repairing blanks, painting and glazing, cannot be neglected, and it will be wasted if it is not done well. Especially in the trimming process, the blank with a thickness exceeding 10 mm is carefully trimmed to a thickness of about 0.8 mm in the hands of skilled craftsmen. Such fine work needs to be improved in the boxing ring. It can be said that the performance of these handicrafts is an unforgettable and painstaking cultural accumulation. With the continuous innovation of ceramic production and processing, technology and science and technology are combined. The production process of modern thin-shell porcelain is no longer purely manual. From the improvement of ceramic raw material formula to a series of production processes such as molding process, firing process and decoration process, there are extremely strict production lines, and practical products made by hand are replaced by mass production by large machines.

2. Innovation of manufacturing technology of thin-walled porcelain.

Innovation is to be good at absorbing and using the latest scientific and technological achievements. In the long process of ceramic development, ceramists have developed many new technologies through repeated experiments and explorations, which also gives us more reference and play. Modern ceramic molding technology is applied to the production of thin-walled porcelain, and the combination of new technologies makes ceramic art more colorful. Traditional thin-walled porcelain is generally formed by drawing and then trimming. The ingenious application of clay molding and grouting molding combined with modern ceramic art can not only greatly improve work efficiency, but also achieve unexpected results in complex, light and irregular modeling. Innovative manufacturing technology: ① membrane manufacturing: enclose a square with a flat plate, fill the gap and pour gypsum slurry. The height is generally not less than 5cm, and the length and width depend on the size of the tool. Repair the model after removing the template, and level the watch with a saw blade or a knife. On one surface, the concave surface is repaired. The thinner the surface, the better. This surface must be smooth and smooth, and can be sanded thin. This step is very important to avoid the consequences of not thinning the tire. (2) Grouting molding: the slurry is injected into the concave surface of the mold, which can be used as an auxiliary tool to scrape off excess slurry when it is uniformly adsorbed on the mold wall. When the moisture in the mud is gradually absorbed by the mold to form green mud, cut the mud board according to your own ideas and surround it for molding.