In layman’s terms: pottery made of clay is called pottery, and pottery made of china clay is called porcelain. Ceramics is the general term for pottery, stoneware and porcelain. Generally speaking, two different types of clay, namely pottery clay and china clay, are used as raw materials. Ingredients, molding, drying, roasting and other processes can be called ceramics. Ceramics include a wide range, some are resistant to water, and some are resistant to acids. They are widely used in construction, chemical, electricity, machinery and other industries and daily use Decoration and other aspects. In addition, products made of materials other than clay and made according to the ceramic manufacturing process are also called ceramics, such as steatite porcelain, metal ceramics, capacitor ceramics, magnetic ceramics, etc. It is widely used in radio, atomic energy, Rocket, semiconductor and other industries. At present, all ceramic products are commonly referred to as “inorganic non-metallic solid materials.
Pottery and porcelain are daily necessities that people often come into contact with. Sometimes they look similar on the surface, but after all, they have their own characteristics and are different.
Pottery is generally made of clay. The temperature of firing pottery is generally between 900-1050°C. If the temperature is too high, the pottery will be burnt and deformed. The carcass of pottery is relatively loose and has many pores, so it has strong water absorption. The surface of general pottery is unglazed, even if it is glaze, it is low-temperature glaze.
The history of pottery in our country is about 10,000 years old. In primitive society, pottery was made by hand kneading into a certain shape at the beginning, and later developed into a clay stick of the same thickness, then the clay stick was built into a certain shape, and the inside and outside were smoothed by hand. . At the stage of patrilineal society, the rotation system appeared. After entering the feudal society, he invented the molding method, which is to fill the pottery clay into the mold and take out the full shape of the utensil. It is speculated that the most primitive firing method is the heap firing method, in which the sun-dried pottery is burned in open firewood. Six or seven thousand years ago, pottery kilns were used to make pottery.
