What is the firing temperature of pottery?

2024-09-25 10:56

Pottery is not a unique invention in China. Archaeological discoveries have proved that many countries and regions

Pottery is not a unique invention in China. Archaeological discoveries have proved that many countries and regions in the world have invented pottery one after another. However, China has made a big step forward on the basis of pottery-the earliest invention of porcelain has written a glorious page in the history of human civilization.
Although porcelain and pottery are two different substances, there is a close relationship between them. Without the invention of pottery and the experience gained from the continuous improvement of pottery making technology, porcelain could not have been invented alone. The invention of porcelain is the result of our ancestors constantly understanding the performance of raw materials, summarizing firing technology and accumulating rich experience in the long-term pottery making process, thus producing quantitative change to qualitative change.
The difference between pottery and porcelain is mainly as follows:
1. firing temperature is different
The firing temperature of pottery is generally lower than that of porcelain, with a minimum of 800 ℃ and a maximum of about 1100 ℃. The firing temperature of porcelain is relatively high, mostly above 1200 ℃, and some even reach about 1400 ℃.
Different degrees of 2. hardness
The pottery firing temperature is low, the blank is not completely sintered, the sound asks questions when knocking, the carcass hardness is poor, and some can even use steel knives to draw grooves. The firing temperature of porcelain is high, the carcass is basically sintered, the sound is crisp when knocked, and it is difficult to make grooves on the surface of the carcass with a general steel knife.
3. use different raw materials
Pottery can be made into blanks using general clay, while porcelain needs to choose specific materials to make blanks on Gao Ling. The firing temperature is at the temperature stage required for pottery, which can become pottery. For example, ancient white pottery was fired in this way. At the temperature required for firing porcelain, the body made of kaolin becomes porcelain. However, when the clay made of pottery is burned to 1200 ℃, it is impossible to become porcelain and will be melted into glass.
4. transparency is different
The body of pottery is not translucent even if it is relatively thin. For example, the black pottery of the Longshan culture is as thin as an eggshell, but it is not transparent. Porcelain carcass regardless of thin thickness, have the characteristics of translucent.
5. different glaze
There are two kinds of pottery: unglazed and glazed. The glaze of glazed pottery can be melted at a lower firing temperature. There are two kinds of glaze for porcelain, which can be fired at a high temperature with the carcass at one time, or at a high temperature, low temperature glaze can be hung on the high temperature element, and the second low temperature firing.

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