30-60T/M Automatic Aluminum Anodizing Production Line for 3C Phone Housing | 8–12μm Fine Sandblasting & Dyeing Process
This dedicated anodizing line is customized for 3C aluminum phone housing mass production. It stably achieves 8-12 μm uniform oxide film with fine sandblasting and consistent dyeing results. Strict parameter locking minimizes color difference and surface defects for consumer electronics standards.
Technical Specifications
| Item | Technical Parameter |
| Target Application | 3C aluminum phone housing / middle frame |
| Oxide Film Thickness | 8 μm ~ 12 μm (controllable adjustment) |
| Standard Surface Process | Fine sandblasting + anodizing + organic dyeing + hot sealing |
| Allowable Alloy Series | 5052 / 6061 / 6063 aluminum alloy |
| Color Consistency | ΔE ≤ 1.5 under standard light source |
| Film Hardness | ≥ HV320 |
| Production Mode | Gantry automatic hanging operation |
| Tank Material | PP anti-corrosion tank body |
| Control System | PLC automatic temperature, time & current control |
Production Process
- Workpiece loading & fixture positioning
- Degreasing and alkaline etching to remove machining traces
- Neutralization cleaning to eliminate alkaline residue
- Precision fine sandblasting for uniform matte base surface
- Secondary pure water rinsing to avoid cross-contamination
- DC anodizing to form 8-12μm oxide film
- Organic dyeing with constant temperature circulation
- Multi-stage pure water rinsing after dyeing
- Hot water sealing to lock color and boost corrosion resistance
- Final cleaning, air drying & offline inspection
Core Advantages
- Stable 8-12μm film thickness control, meeting high-standard 3C appearance requirements
- Optimized pre-treatment and sandblasting station, effectively reduce visible scratch & flow mark
- Closed-loop temperature & current system ensures batch-to-batch color uniformity for phone housings
- Modular tank layout supports quick switch between multiple color orders
- Low wastewater fluctuation, convenient to match supporting wastewater treatment facilities
Supporting Equipment List
- Gantry automatic travelling crane & hanging jigs
- High-precision DC stabilized anodizing rectifier
- Constant temperature heating & cooling unit
- Multi-stage pure water recycling system
- Automatic chemical dosing device
- Wastewater treatment system for surface treatment production
- Air drying tunnel & finished product inspection workstation
Frequently Asked Questions
Q1: Can this line adjust oxide film thickness outside 8-12μm?
The line is optimized for 8-12μm for 3C phone housing. We can adjust parameters for 6-15μm range upon request.
Q2: What sand grain size is matched for fine sandblasting of mobile phone frames?
We support customized blasting media. Standard matching glass bead or alumina sand for delicate matte texture.
Q3: Is the dyeing process able to achieve low-fading requirement for consumer electronics?
We adopt high light-fastness organic dyes with complete sealing process to reduce color fading risk.
Q4: What daily output can this anodizing line reach for aluminum phone housings?
Output depends on fixture layout and cycle time. We provide capacity simulation based on your product dimension.
Q5: Does the equipment support future upgrade for other 3C parts such as notebook frames?
Modular design allows process upgrade for laptop housings, smart watch frames and similar aluminum 3C components.