The working principle of anodizing equipment is based on electrochemical reaction, with the core being to generate an oxide film on the metal surface through an electrolysis process.
Equipment Working Process: The metal workpiece is placed in the electrolyte as the anode, and the cathode is usually made of aluminum plate or other conductive materials, forming a complete electrolytic cell. After direct current is applied, the following reactions occur: on the anode surface, aluminum atoms lose electrons and are oxidized to form aluminum ions. These ions react with oxygen ions or water molecules in the electrolyte to generate aluminum oxide, which deposits on the metal surface and gradually forms a dense oxide film. Meanwhile, a reduction reaction occurs at the cathode, releasing hydrogen gas or oxygen atoms.
Key Process Elements: The composition and concentration of the electrolyte directly affect the growth rate, thickness and properties of the oxide film. Process parameters such as current density and temperature must be strictly controlled to ensure the uniformity and quality of the film layer. The entire process usually includes pre-treatment, anodizing, sealing and other steps. Auxiliary equipment such as ultrasonic cleaners is used to improve surface cleanliness.
