"White as jade, bright as mirror, thin as paper, sound like a slap" is a true portrayal of ceramics by the ancients. With the advent of the 5G era, ceramics, as a new type of mobile phone casing material, is also receiving more and more attention from industry professionals. . The following is a promotional video of the first-time technology ceramic mobile phone. Next, we will analyze the molding process of the ceramic Mobile Phone Case from the four aspects of dry pressing, sintering, polishing and CNC technology.
From microcrystalline zirconium nano ceramic powder to mobile ceramic body, mainly through dry pressing (or injection, casting, etc.), degumming and sintering, grinding and polishing, CNC processing, etc., as Sun Dasheng was born in the stone, Tai Shang Laojun It is very difficult to burn in the gossip furnace and to be polished into a Buddha in nine hundred and eighty-one. Therefore, it will be a mobile phone ceramic case, and it is not difficult to make a fool of eighty-one (just kidding). Below we understand the processing technology of the first technology ceramic mobile phone:
Dry pressing
Dry press forming, also known as press forming, is a microcrystalline zirconium nanoceramic raw material which is granulated, has good fluidity and is suitable for granules, and is loaded into a mold, and external pressure is applied through a plunger of the press to make the powder into a certain shape. The method of the blank. Dry press molding reduces the subsequent sintering time because the moisture content of the powder is below 7%.
sintering
The green body is sintered in a sintering furnace at a temperature higher than 2000 ° C to reduce pores in the formed body, enhance bonding between the particles, and improve mechanical strength, thereby obtaining a molded ceramic sintered body having a hardness comparable to that of sapphire.
Grinding and polishing
Grinding is mainly a kind of process to achieve rapid thinning. The mechanism of material stripping in ceramic grinding process is mainly based on rolling and crushing. Polishing is the use of a fine abrasive elastoplastic polishing machine to rub the surface of the workpiece to cause plastic flow on the surface of the workpiece to produce fine chips. Since the microcrystalline nano zirconia ceramic is hard, the polishing and polishing takes a long time, and the video is 350 minutes.
CNC
Ceramic CNC machining is mainly used for the trimming of the fuselage, and the curve of the mobile phone body is softer and the look is more comfortable. During ceramic grinding, brittle stripping of materials is accomplished by the formation or extension, flaking and chipping of voids and cracks. Since the microcrystalline nano zirconia ceramic is hard, it needs to be processed by surface treatment or diamond CNC tool.
Mobile phone ceramic case finished
After hundreds of complicated processes, as well as surface treatment after laser, PVD, AF treatment, etc., the mobile phone ceramic body with uniform crystal structure and shiny gloss is finally obtained.
Off-topic: Although compared with the 3D glass Phone Case, the ceramic phone case currently has the problems of high cost and low yield, but it is believed that with the continuous advancement of technology, ceramics will likely be in the mobile phone appearance market, and 3D glass for a long time. coexist.
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