Surface pretreatment is a critical step in the anodizing process, as it ensures the aluminum surface is clean, smooth, and free from contaminants before the oxide layer is formed. Proper pretreatment enhances the quality, appearance, and performance of the anodized finish. The specific pretreatment steps may vary depending on the type of anodizing (e.g., standard, hard, or bright anodizing) and the desired outcome (e.g., decorative vs. functional).
Below is an overview of the key surface pretreatment steps involved in preparing aluminum for anodizing.
