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On American time September 7th, Apple has officially unveiled new iPhone14 Series, and the price of version iPhone 14 Pro Max 1TB has reached to $1099, turned to the most expensive iphone ever.
That also means how fancy the phone case is, then what is the material of the phone frame and the producing process? We will introduce in the below article.
Regular Version Iphone—- Aerospace-grade Aluminum
Regular Iphone frame is made of aerospace-grade aluminum.
Material Advantage
This kind of material has nice heat transfer which is better than other metal; and its light quality makes lower weight;
what’s more, its plasticity is good for machining, can do various of surface treatment (Anodizing, Electrostatic Coating, Electrophoresis, Polishing, Brush, Sand Finishing, etc ) , strengthen its corrosion resistance and abrasive resistance.
Because of its good strength, plasticity, toughness, corrosion resistance and abrasive resistance, it often use in the manufacture of airplane and aircraft.
Machining Process
1.CNC Molding-Grinding-Polishing- Color plating-Cover- Anodizing-Off Cover
2.Mirror polishing of aluminum is relatively difficult, manual polishing is completely unable to achieve its requirements, so we can use plane grinding machine.
The process of polishing mainly divided into two parts: ① white polishing leather+ AIO rough polishing liquid, to remove the CNC knife lines; ② Polishing pad+ SiO2 polishing liquid, which can reach an ideal super-mirror surface within only 10mins.
Pro Version Iphone—–Surgical-grade stainless steel
Pro version Iphone frame is made of surgical-grade stainless steel (316 stainless steel).
Material Advantage
Because 316 stainless steel has excellent characteristics such as good mechanical properties, easy processing, corrosion resistance and oxidation resistance, good strength, durability and high temperature resistance, it is often used to make surgical equipment and implants, so it is also called “surgical grade stainless steel”.
Machining Process
Before polishing, grinding the milling cutter lines by sanding belts (Standard Process: #320-#400-#600). We can start polishing only after smoothing the milling cutter lines.
New Process
After our effort, using bias-cut sisal wheel after high-effective BK chemical treatment, match with our polishing compound with special cutting strength, and eight head batch-type round polishing machine, then you don’t need to grind the milling cutter lines any more.
It not only can finish a smooth and bright surface more effectively, improve the capacity to 100%, but also the pass rate reach up to 97%. Estimated reach to the high class satin effect after polishing and sand blasting.
