It is becoming more and more difficult for a mobile phone to gain a market advantage. The pursuit of differentiation from the fuselage and materials has become the direction that manufacturers have been exploring. The change of metal, glass, ceramic, mobile phone shell material has also brought a lot of opportunities to its processing equipment market, and since the release of Mi 5, the ceramic material used in the body has become the research direction of various manufacturers. The performance of the material itself does determine the performance of the product, but the processing process from the material to the finished product also plays a crucial role in the quality of the product. The material and the technology are closely related. At present, the use of zirconia ceramics terminal enterprises Apple, Huawei, Xiaomi, One Plus, OPPO and so on.
So, what is ceramic injection molding CIM technology?
01 What is ceramic ?
Ceramics are mainly divided into traditional ceramics and special ceramics.
Traditional ceramics are made of clay (including clay, porcelain clay, kaolin, etc.), quartz, feldspar and other natural minerals, which are crushed, formed and sintered. Because it has the advantages of fire resistance, acid and alkali resistance, oxidation resistance, good electrical insulation and easy cleaning, it is widely used.
Special ceramics to alumina, magnesium oxide, zirconia, lead oxide, titanium oxide, silicon carbide, boron carbide, silicon nitride, boron nitride and other artificial compounds as raw materials, using traditional or special methods for grinding, forming, high temperature firing. Some are also machined or polarized after firing, in order to achieve the precise requirements of size and shape, or make the product with specific ferroelectric properties. Special ceramics can be broadly divided into structural ceramics and functional ceramics two categories. Structural ceramics in strength, hardness, wear resistance, heat resistance, corrosion resistance and other aspects are far more than traditional ceramics. Functional ceramics have ferroelectric, antiferroelectric, magnetic, gas sensitive, heat sensitive, fast ion conduction and other special properties.
The ceramic material on the mobile phone is zirconia, because the ceramic zirconia hardness is high, corrosion resistance, high temperature resistance, has good physical characteristics, suitable for making small complex parts.
02 Advantages of ceramic materials injection molding？
Noble texture, and sapphire (single crystal alumina) with the gem grade material;
The color is round, with high refractive index and strong dispersion, with good visual effect;
Low thermal conductivity, warm jade, compared with metal, plastic more skin-friendly;
Insulation material, will not shield the signal, will not affect the antenna layout;
Good mechanical properties, high bending strength, Mohs hardness and sapphire, bending resistance, wear resistance;
High dielectric constant for fingerprint sensor expandable area clearer and sharper image.
Post time: Jan-12-2023