MULTICOLOR FORMATION METHOD OF ALUMINUM SURFACE

A multicolor formation method of an aluminum surface, which easily forms multiple colors on a surface of a product made of aluminum through a simple process, is provided. A multicolor formation method of an aluminum surface comprises the steps of: coating an organic paint comprising organic dyes or inorganic pigments on a surface of an aluminum product manufactured through casting or forging; polishing and removing a portion of a film of the organic paint coated aluminum product; and anodizing the film removed portion of the aluminum product to form an oxide film on the aluminum product, introducing colors onto the formed oxide film, and sealing the colors introduced onto the oxide film. The organic paint is selected from epoxy-based, polyester-based, and acryl-based paints. The film is formed by applying a process selected from an oxalate process, a sulfuric acid process and a chromic acid process to the anodizing process. The colors are introduced onto the oxide film through electrolytic coloring or dye coverage.