Semi-Automatic Anodizing Production Line with 2,500 T/M Capacity, Modular Design, and RoHS and REACH Compliance
Price:
Customized Price
MOQ:
I set
Delivery Time:
60-90 days
Brand:
MEI-AL
Product Description
Semi-Automatic Anodizing Line for Household Aluminum Hardware (2,500 T/M)
Overview
This semi-automatic anodizing line is configured for processing aluminum household products, including storage racks, towel rails, bathroom shelves, and organizer components. Designed for an average production output of 2,500 metric tons per month, the line combines guided hoist movement with programmable process parameters.
The system uses Type II sulfuric acid anodizing to form a clear or colored protective oxide layer. Semi-automated operation provides flexibility for handling varied workpiece geometries, rack loading layouts, and batch size adjustments while maintaining continuous chemical tank management.
Technical Specifications
| Parameter | Specification / Value |
|---|---|
| Applicable Workpieces | Aluminum towel racks, storage shelves, bathroom hardware, extruded rails |
| Operation Mode | Semi-automatic (PLC-monitored hoist with manual rack loading/unloading) |
| Anodizing Type | Type II Sulfuric Acid Anodizing |
| Film Thickness | 8 µm - 25 µm (adjustable by process dwell time and current density) |
| Surface Finish | Matte, satin chemical etch, bright polished, dyed finishes (black, gold, bronze, silver) |
| Process Temperature | Normal Temperature |
| Current Density | 1.2 - 1.8 A/dm² |
| Production Capacity | 2,500 Tons / Month |
| Sealing Method | Mid-temperature nickel-free sealing or hot water sealing |
Anodizing Process Flow
1. Racking & Loading: Workpieces are secured onto titanium jigs to maintain electrical contact.
2. Chemical Pre-treatment:
- Degreasing: Removes residual lubricants and surface oils.
- Rinsing: Cascade water rinse.
- Alkaline Etching / Satin Etch: Creates a uniform matte surface texture on aluminum extrusions.
- Desmutting: Neutralizes surface alkaline residues and clears insoluble alloying elements.
3. Anodizing: Direct current electrolysis in a room-temperature sulfuric acid bath to build the oxide layer.
4. Coloring / Dyeing (Optional): Organic dyeing or electrolytic coloring for decorative surface finishes.
5. Sealing: Closes the porous aluminum oxide layer to impede corrosion and lock in pigments.
6. Drying & Unloading: Hot-air drying followed by manual rack unloading and inspection.
Key Features
Controlled Film Thickness: Direct current rectifiers with ramp control and digital timing maintain target oxide layer growth within defined milligram and micron tolerances.
Automated Process Control: Centralized PLC interface monitors hoist movement sequence, bath immersion timing, temperature thresholds, and rectifier outputs.
Batch Color Consistency: Controlled dye bath chemistry, continuous fluid agitation, and automated temperature regulation reduce visual shade variance across production runs.
Temperature & Filtration Control: Industrial chillers and titanium heat exchangers maintain anodizing electrolyte at room-temperature operating levels, supported by continuous particulate filtration.
Flexible Surface Finishing: Multi-tank layout supports switching between bright, satin, clear, and color anodizing cycles based on specific household product designs.
Production Line Configuration
The complete plant layout integrates mechanical, electrical, and fluid handling sub-systems:
- Process & Anodizing Tanks: Reinforced steel structure with polypropylene (PP) or PVC linings, fitted with air spargers and cooling coils.
- Overhead Hoist Crane System: Semi-automatic track hoist for programmed lifting, transport, and lowering of product racks between process steps.
- Rectifier System: High-efficiency IGBT rectifiers equipped with voltage and current regulation.
- Chilling & Heat Exchanger System: Water-cooled chiller paired with acid-resistant titanium heat exchangers for bath thermal regulation.
- Exhaust & Air Scrubbing System: Push-pull ductwork collecting tank fumes, routed to a wet scrubber unit for neutralization before discharge.
- Filtration & Circulation Systems: Magnetic drive filter pumps to maintain bath homogeneity and prevent debris accumulation.
- DI Water Unit: Reverse osmosis system delivering low-conductance water for interstage rinsing and sealing tanks.
Frequently Asked Questions
Which aluminum alloys are compatible with this anodizing line?
The line accommodates common extruded and sheet alloys used in household products, such as 6063, 6061, 6005, and 5052 series aluminum.
Why choose a semi-automatic line over a fully automatic system for 2,500 T/M capacity?
Semi-automatic operation allows manual adjustment of rack positioning for complex 3D shapes like towel racks and corner shelves, while maintaining automated control over chemical dwell times and bath parameters.
Why is room temperature anodizing selected for household hardware?
Standard Type II sulfuric acid anodizing operates at room temperature (ambient), which is effective for building decorative and corrosion-resistant oxide films (8-25 µm) on consumer hardware without excessive energy consumption required for low-temperature hard anodizing.
How is temperature stability maintained in the main anodizing tank?
Titanium heat exchangers connected to a dedicated chiller unit continuously circulate the electrolyte, dissipating heat generated during the electrolytic reaction.
How are acid fumes managed during operation?
Lateral exhaust hoods mounted on the tank rims pull acid mist into a central ducting system leading to a vertical packed-bed chemical scrubber.
Get a Customized Aluminum Anodizing Line Layout and Process Solution
Line layouts, tank dimensions, rectifier capacities, and waste treatment integrations can be tailored to match specific factory floor dimensions, power supply specifications, and target product geometries. Contact our engineering team with your daily throughput targets and product engineering drawings to receive a technical proposal and equipment footprint assessment.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Guangdong MEI-AL Technology Co., Ltd.
Location
No. 1, Changgang North Road, Changhongling Industrial Park, Shishan Town, Nanhai City, Foshan City
Contact Person
rainbow