Tell me about the general manufacturing process. Everyone knows how to make ceramics, and they are all sintered after powder molding. However, the powder embryo has pores, and the crystal structure changes during the sintering process. In addition to often being inexplicably broken, resulting in a decrease in the yield, the type variable is also difficult to control. It is normal for a flat embryo to go in and out to be curved. Moreover, because the embryo itself is very fragile, the fine configuration of the mobile phone case cannot be pressed out at all, and the finer shape can only be processed by subsequent machining. But the hardness and wear resistance of ceramics are basically processed by almost no other processing method except for the grinding of tools covered with diamond powder! In this case, it is not only the problem of high processing costs, but also many shapes cannot be made at all! So you can't rely on machining to complete all the details, and the accuracy of direct sintering is poor. For the size of the mobile phone case, it is good that the directly sintered parts can have a tolerance of 0.1mm. For mobile phones, this tolerance is almost intolerable

The problem of powder sintering makes it difficult to do a good job in the microscopic uniformity of the material, and various problems will occur. For powder metallurgy, it is still possible to forge at a thick sintering, and ceramics are not possible at all. To put it bluntly, ceramics are equivalent to the embryonic parts of powder smelting. The spindles are directly processed to make parts without forging, and they cannot be turned or milled, but can only be ground...............

In addition, the hard powder that has been processed by ceramic grinding is very harmful to the machine and increases the cost...........

comprehensive point of view, the cost performance is too low............................. If the "performance" is only wear-resistant, when other people's mobile phones are made of metal, then the unique ceramic shell is bound to become a gimmick, for manufacturers, "performance" immediately doubled, so there will be millet such as to go directly on the ceramic