Bone china is graded like ceramics, which usually depends on the texture of the material, manufacturing technology and color painting design, and during the firing process, its regularity, whiteness, transparency, thermal stability and other physical and chemical indicators The requirements are extremely high, resulting in a high rejection rate. Due to the exquisite materials, fine production and strict standards, the value is higher than other porcelain types. So how to identify bone china and its pros and cons?
1. Hold the bone china in your hand and observe. The color of good bone china is the unique natural milky white of natural bone powder. The content of bone powder is an important technical indicator to distinguish the grade of bone china. Observe the permeability of the bone china with bright light, and see whether the composition of the cup is meticulous or not. ).
2. Feel the fineness and hardness of the porcelain by hand. The addition of bone powder makes bone china lighter than other types of porcelain, and can be thinner than ordinary porcelain.
3. Another important external feature of bone china because of the formula is the sound when the bone china collides. Put two high-grade bone china bowls on the flat hands and collide. Note that bone china The hardness is very high, and such a collision will not be damaged. After the collision of high-grade bone china, the sound of “clang” is as crisp as a bell, and there is an echo, and the echo time is longer, while other porcelain types It emits a dull “ding” sound, and there is basically no echo.