Product Overview
Our OEM custom metal phone middle frame is precision‑manufactured from high‑grade 6063 aluminum alloy via
full‑process CNC milling combined with NMT nano‑injection molding technology. Designed as critical structural
housing for smartphones, especially for iPhone assembly, this metal phone middle cover delivers ultra‑tight
dimensional tolerance up to ±0.005 mm. Multiple surface treatments including sandblasting and anodizing gold
are available to satisfy appearance and durability requirements for mass‑production electronic structural
components.
Mobile Phone Middle Cover Cost Analysis
Key Features
1,Premium Material: 6063 aluminum alloy, lightweight, high rigidity and good thermal dissipation
2,Ultra‑high Precision: Strict tolerance ±0.005 mm, guarantee seamless assembly for smartphone internal components
3,NMT Nano‑injection Technology: Metal‑plastic composite structure, solves antenna signal restriction and
supports 5G antenna & wireless charging function
4,Custom Surface Finish: Sandblasting, anodizing, highlight cutting, laser engraving & screen‑printing optional
5,Strict QC Control: Full‑inspection on each procedure to stabilize mass‑production quality
6,Full‑service OEM: Accept custom drawings, samples or idea‑based development
Complete Processing Steps
1. CNC Roughing Process: Remove excess aluminum material for basic frame contour
2. NMT Nano‑injection Molding: Inject plastic onto aluminum substrate to realize metal‑plastic composite
breakpoint structure for antenna performance
3. CNC Finish Machining: Fine milling to achieve final precise dimension & assembly structure
4. Surface Treatment: High‑light cutting, anodizing, laser radium carving or screen printing for final appearance effect
Nano-Injection Process
Metal materials are evolving to achieve higher strength and thinner thickness. Antenna signal limitations
necessitate breakpoint design, where plastic connects metal segments through the nano-injection process.
Options such as plastic injection frames with PC composite back covers and IMT integrated injection phone back
covers fulfill 5G antenna RF specifications and support wireless charging.
Mobile injection molded housings are precision structural parts. They require accurate dimensions and consistent
mass manufacturing. Today’s smartphones demand high precision on structural details and surface finish to
maintain ultra-small assembly gaps.
Fixture processing diagram（CNC Machining Service）
Why Choose XL Precision MFG
1,Over 10‑year CNC precision machining experience, senior engineering team provide optimization suggestion for
your drawing
2, Fast quotation & flexible lead time for prototype and bulk order
3, Full quality accountability for defective products
4,Support prototype trial and large‑volume batch manufacturing
Batch Completion Picture(Precision Machining Services)
Get Your Custom Solution Now
Send your drawing, specification or sample to us for competitive quotation. We support OEM custom metal
phone protective frame for various smartphone projects.
