A standard anodizing machine is specialized equipment designed to form oxide films on light metals such as aluminum, magnesium, and titanium through electrolytic oxidation. The core principle involves using the workpiece as the anode in a specific electrolyte (e.g., sulfuric acid, oxalic acid) and passing an electric current, which induces an oxidation reaction on the metal surface, producing a dense, wear-resistant, and colorable oxide layer. It is widely used in the aerospace, electronics, construction, and consumer goods industries, suitable for products such as aluminum alloy doors and windows, smartphone frames, and aerospace components.
Core Components of a Standard Anodizing Machine：
Electrolytic System – The central unit, consisting of:
Corrosion-resistant plating tanks made of PP or PVC, selected according to the type of electrolyte,Electrode assemblies, with the workpiece as the anode and lead or stainless steel plates as the cathode, and An adjustable DC power supply (10–25 V) with current density controlled according to the desired oxide film thickness.
Electrolyte Circulation System – Maintains uniform electrolyte composition and stable temperature through filtration and temperature control (15–25°C), preventing localized over-oxidation.
Control System – Operated via PLC and touchscreen, enabling real-time monitoring of voltage, current, temperature, and oxidation time, ensuring precise control of oxide film thickness (typically 5–20 μm, with hard anodizing reaching 50 μm or more).
Post-treatment Module – Provides rinsing, coloring (e.g., electrolytic or organic coloring), and sealing (hot water or nickel salt sealing to enhance corrosion resistance), expanding the functional and decorative applications of the oxide layer.
Key Advantages
The oxide film bonds tightly with the substrate, making it resistant to peeling, with a hardness of HV300–500 (higher for hard anodizing) and excellent wear resistance.
Its porous structure allows diverse coloring, meeting decorative requirements.
Requires minimal pretreatment and is compatible with various light metal substrates.
Lower energy consumption than plating processes and environmentally friendly, producing a non-toxic surface coating.
The standard anodizing machine is therefore a core solution for strengthening, protecting, and enhancing the appearance of light metal surfaces.
