The difference between bone china and ceramics.

Bone china, as a cultural artwork, was invented by the British. When making pottery, the ashes of herbivores such as cows and sheep are added to make it appear the natural milky white color of natural bone meal. What is the difference between the two traditional ceramics? The difference? The bone china dinnerware supplier will answer for everyone:

Bone china is made by adding about 30% herbivore bone meal (best bone meal) to the ceramic raw materials, and then undergoing three firing processes of high-temperature biscuit firing, low-temperature glaze firing, and decal firing. Because it adopts over-firing, that is, biscuit firing and then glaze firing after polishing the blank, the bone china has good regularity. The addition of bone ashes increases the hardness and light transmittance of bone china, and its strength is twice that of daily-use porcelain; the bone ashes are combined with a unique firing process to eliminate porcelain clay impurities, making bone china delicate, transparent and white (visually unique Clean feeling), light weight, few flaws, thinner than ordinary porcelain. Of course, the higher the proportion of bone powder, the lower the proportion of clay in the raw material, the lower the viscosity of the porcelain body, the easier it is to burn during the production process, and the molding requires higher technology. Therefore, high-quality bone china (bone powder content 45% and more Above) is more precious.

The previous introduction is about the difference between bone china and ceramics:

1. Different raw materials

The raw materials of porcelain are kaolin, porcelain stone, etc., and bone china is bone meal, clay, etc.

2. Permeability

As mentioned above, the raw material bone powder of bone china makes its permeability very good. Porcelain generally does not have good permeability. Thin porcelain such as Linglong porcelain can transmit light.

3. Firing process

Bone china is a low-temperature porcelain with a maximum firing temperature of 1220 degrees Celsius. It is made after over-firing. The firing temperature of Chinese porcelain is relatively high because the pigments of the floral decoration are caused by heavy metals and require high temperatures to develop.

The raw material bone meal of porcelain makes its permeability very good

4. Flower decoration craft

Bone china can only be decals. Bone china is overglaze. As for porcelain, it can be hand-painted, semi-hand-painted, decals, etc. Porcelain decals can be over-glazed or under-glazed. The underglaze decals are transferred to the ceramic body, and of course the overglaze decals are transferred to the glaze. There are differences in the coloring of the same hand-painted pattern, the decal magnifying glass can see the network grid pattern, of course, you can also check whether the corner position pattern has gaps, overlaps, etc.

5. Unit of measurement

The measurement unit of bone china is "head" and the measurement unit of porcelain is "piece". "Head" does not refer to the number of bone powders of animals used in bone china, but refers to the quantity of the whole set of bone china; "piece" is a comprehensive measurement unit used for cutting tools, which facilitates the formulation of wages, prices, production quotas, etc. It not only represents the unit of measurement for the specifications of cut porcelain, but also represents the difficulty of making porcelain.

6. Thermal insulation

Bone china has a better heat preservation effect and can retain the taste of tea or coffee for a longer time.

7. Water absorption

Bone china has a lower water absorption rate than porcelain, so it is easier to clean. Generally, it can be washed with warm water, which gives people a unique sense of cleanliness.

8. Appearance characteristics

Bone China, the milky white of natural bone meal, with a little yellow in the white, similar to milk powder, the white of porcelain will be blue and white, bright white, etc. Bone china is relatively thin, with a thickness of only 2 to 2.5 mm, which is much lighter than porcelain.

The characteristics of high-quality bone china are thin, light, transparent, milky white, and the sound of tapping is as clear as a bell, and the echo is long-lasting; good china is characterized by smooth and flawless surface and crisp sound; bone china is currently the only recognized high-end china Kind.