Manufacturing Process
Cleaning: Degreasing (Removal of surface oils) and thorough water rinsing.
Etching (Optional): Alkaline etching to create a uniform matte texture, followed by neutralization.
Desmutting: Acid dip to remove intermetallic residues.
Anodizing Process:
- Electrolytic Process: Aluminum acts as the anode in acidic electrolyte.
- Parameters: Voltage 12-20 V, Temperature 18-22°C, Time 30-60 minutes.
Coloring: Dyeing (organic/inorganic), Electrolytic coloring (tin/nickel salts), or Natural coloring.
Sealing: Hot Water Sealing (95-100°C), Cold Sealing (Nickel-fluoride), or Mid-Temperature Sealing.