Francool Technology (Shenzhen) Co., Ltd.

3C electronics

Glass grinding defoamers must have a high degree of uniformity and should be ground very clean. Grinding optical glass, generally containing abrasive abrasive cerium oxide, the formulation of the suspending agent has a stable foam, and if the formation of a stable foam broke the uniformity of abrasive, grinding surface finish will have an impact. In the abrasive added silicone defoamers, you can protect the quality of optical glass grinding process.

Taking the processing of metal case of mobile phone as an example, common processes include aluminum ingot, CNC machining, nano-antenna injection molding, polishing, LOGO developing shadowing, sandblasting, primary anode, high gloss processing, fine milling cavity, secondary anode, Hot-melt nuts, inspection and shipment processes. Below, we take the music cell phone aluminum alloy metal shell processing procedures to introduce the general metal phone case processing technology. Its processing technology is very typical, representing the general metal phone case manufacturing process. And I introduced what steps in these processes require cleaning.

Aluminum extrusion cleaning: This process is mainly degreasing cleaning, including the cleaning of drawing oil, stamping oil and so on.

CNC CNC milling machine cleaning after cleaning: deburring cleaning, cleaning fluid residue

Sand blasting process after cleaning: dust cleaning, cleaning ink protective layer. In other metal phone also includes the addition of plastic in addition to plastic ink

Anode cleaning: cleaning oil, fingerprints, dust

Back to shelter cleaning: cleaning the ink does not hurt the substrate

1. The main surface of the solid oil, dirt, fingerprints and other dirty cleaning. The substrate, coating, ink and other security-free corrosion.

2. Neutral products, safety and environmental protection; in the composition there is no need for special labeling of harmful substances.

3. Dissolved completely, easy to rinse.

Mobile phone metal shell CNC machining process solution

In this era of user experience is highly valued, more and more mobile phones, notebooks, wearable device manufacturers began to force the shell material. Only from the mobile phone field, mobile phone shell material is gradually from the engineering plastics to metal transition.

There have been many combinations of cell phone case material evolution: plastic and metal, glass and metal, all plastic, all glass, etc., but ultimately did not overshadow the limelight of all-metal. From the actual touch experience, full metal phone does have superior experience in many aspects, regardless of appearance or feel better than other materials.

Mention all the metal, must mention CNC. At present, all-metal enclosures of 3C products are basically machined by Computer numerical control machine tools (CNC). CNC because of its high efficiency, high precision, the advantages of stable processing quality 3C shell manufacturers must have the equipment.

All-metal CNC machining process first pioneered by Apple - Aluminum solid aluminum column from the die-casting, precision machining first cutting into the fuselage of the prototype, with the body gradually formed, the shape of the keyboard on the fuselage And a variety of minor structures have been milled out. This process contains a total of nine CNC milling technology, nine technology will get a sophisticated one-piece shell.

Shell manufacturers from programming to obtain the finished product need to go through roughing, semi-roughing, semi-finishing, finishing and other processes, many times the whole process requires more than 10 stations in order to obtain finished products, you want to improve the yield, each process All need strict control.
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First, CNC machining Pre-order work: modeling and programming

Before CNC machining begins, you first need to model and program. The difficulty of 3D modeling is determined by the product structure. The complicated product modeling is more difficult and the process of programming is more and more complex. Programming includes the processing of the process settings, tool selection, speed setting, the feed rate of each tool and so on. In addition, different products have different clamping methods, the fixture must be designed before processing, and some special fixtures need to be made for some complicated structures.

Programming includes the entire product processing technology, although the follow-up are completed by the CNC automation, but the pre-programming must practice experienced personnel to operate, to avoid multiple trial and error to raise costs.

Second, the main processing technology (manufacturing all-metal mobile phone shell required for the main CNC machining process)

The use of high-speed drilling center will be precise aluminum plate mill into a certain size of the regular three-dimensional volume, ready for the next process.

Rough milling: roughed out the lumen structure after positioning, the positioning column combined with the clamp, milling to the outside most of the redundant material.

Milling antenna slot: all-metal shell signal problem is very tricky, the antenna slot to be milling out the signal for the transmission path to keep the necessary connection points to ensure the body strength and overall sense.

CNC finishing: fine milling cavity, the external structure, the outer surface, such as the side.

Polishing: Polishing with a high-speed, precision CNC machine removes knives and prepares for subsequent blasting.

Sandblasting: The metal surface treatment into a matte effect.


Anode: Color the phone and anodize the aluminum into gold. At the same time improve the stability of the surface material

Secondary anode: the fuselage surface to form a solid and dense oxide film, wear resistance is further enhanced.

Plastic shell molding using injection molding process, just open the mold can be mass production, high yield. The all-metal body CNC machining rate by the shell structure complexity and accuracy requirements together, it is difficult to achieve such a high yield plastic case, in order to balance the high cost, most of the manufacturing enterprises in the face of price wars will choose to purchase A large number of CNC equipment to reduce overall costs, to meet the productivity requirements.