150T/M Semi-Automatic Aluminum Anodizing Line for Kitchen & Bathroom Fittings | ≥15μm Film, Electrolytic Coloring & Mid-Temp Nickel Salt Sealing

This 150T/M semi-automatic anodizing line is developed specially for aluminum kitchen and bathroom hardware. It achieves minimum 15 μm oxide film thickness, matched with electrolytic coloring and mid-temperature nickel salt sealing. The complete process delivers superior UV fading resistance and long-term anti-corrosion performance for sanitary hardware.

1. Workpiece hanging and fixture assembly
2. Degreasing to remove lubricant, cutting oil and surface contaminants
3. Alkaline etching to realize uniform brushed texture base
4. Neutralization rinsing to eliminate alkali residue
5. Multi-stage pure water cleaning to avoid cross contamination
6. DC hard anodizing to build oxide film ≥15 μm
7. Electrolytic coloring for Brushed Silver / Gunmetal / Champagne tone
8. Cascaded pure water rinsing after coloring
9. Mid-temperature nickel salt sealing to maximize corrosion resistance
10. Final cleaning, air drying and offline visual inspection

• Stable ≥15μm thick oxide film, meets high anti-corrosion requirements of bathroom humid environment.
• Electrolytic coloring technology effectively suppresses UV discoloration compared with conventional organic dyeing.
• Adopts mid-temperature nickel salt sealing formula, prioritizing salt spray performance for sanitary hardware.
• Supports mainstream market colors: brushed silver, gunmetal and champagne with consistent batch tone.
• Semi-automatic configuration balances investment cost and production stability for medium-scale manufacturers.

• Semi-automatic gantry travelling crane & dedicated hanging fixtures
• High stability DC anodizing rectifier unit
• Constant temperature heating & cooling circulation system
• Automatic chemical dosing system
• Multi-grade pure water recycling equipment
• Wastewater treatment system for surface treatment workshop
• Air drying tunnel and inspection workstation

Q1: Why choose electrolytic coloring instead of ordinary dyeing for bathroom fittings?

A: Electrolytic coloring particles embed inside oxide film, offering outstanding UV fading resistance suitable for long-term indoor wet use.

Q2: What benefits does mid-temperature nickel salt sealing bring?

A: Nickel salt sealing greatly improves salt spray performance. This process is optimized for customers who take corrosion resistance as primary requirement.

Q3: Can this line switch to other custom colors besides silver, gunmetal and champagne?

A: Extra color formulas can be developed. Additional process verification is required for new color tones.

Q4: Is this semi-auto line upgradable to fully automatic model in the future?

A: The frame and tank layout reserve expansion space. We can upgrade driving and control modules later if production expands.

Q5: Can this equipment be combined with electrophoresis process afterwards?

A: If higher surface protection is needed, we can design an extended version: anodizing + electrophoresis integrated production line.