What are the manufacturing processes of aluminum alloy mobile phone backplane?
The manufacturing process of aluminum alloy mobile phone backplane is a complex and delicate process, which involves multiple steps and technologies. Here are some of the main manufacturing processes:
1. Selection of raw materials
Aluminum-magnesium alloy, aluminum-manganese alloy, aluminum-silicon alloy, etc., are commonly used aluminum alloy types, and they have different characteristics and application scenarios.
2. Design and modeling
Using CAD software (such as UG) for 3D modeling, design the specific shape and structure of the back of the phone.
3. CNC machining
Aluminum extrusion: The aluminum alloy through the extrusion press to form a sheet or profile.
Rough milling of the inner cavity: Rough machining of the initially formed back plate to remove excess material and prepare for subsequent finishing.
Precision milling of surfaces and sides: high-precision cutting using CNC machines to achieve the size and shape required by the design.
Milling antenna slot: In order not to affect the signal transmission, slots are cut on the metal backplane, and T processing and nano injection molding are carried out to enhance the signal penetration.
4. Surface treatment
Polishing: Improve the surface smoothness, may need to achieve a mirror effect.
Sandblasting: Creates a matte effect or a specific texture.
Anodizing: forming an oxide film on the surface of aluminum alloy to increase wear resistance, corrosion resistance and aesthetics.
Highlight chamfering: Use a diamond cutter to highlight the edges and enhance the visual effect.
5. Pre-assembly treatment
Hot melt nuts: Install nuts on the backplane to secure other components.
Inspection: The quality of the finished product is tested to ensure that there are no defects and that the specifications are met.
6. Final assembly
After all the above processes, the qualified aluminum back plate will be sent to the production line and assembled together with other components into a complete mobile phone device.
Each of these steps requires precise control to guarantee the quality and performance of the final product. In addition, with the development of technology, new processes will continue to be introduced into this process, such as laser welding, new surface coatings, etc., to further enhance the competitiveness of products and user experience.
