| 摘要 |
The present invention relates to an anodizing process for preventing discoloration, which does not contain nickel salt, and a sealing agent for anodizing for preventing discoloration thereby. The anodizing process for preventing discoloration comprises: a degreasing process; an etching process; a primary anodizing process; a primary dye coloring process; a primary sealing process; a drying and processing process; a secondary degreasing process; a secondary anodizing process; a secondary dye coloring process of dyeing an oxidized coating layer formed through the secondary anodizing process with a desired color; a secondary sealing process, and a drying and completing process. Thus, the present invention does not cause allergies as a sealing agent used during the sealing process does not contain nickel. |
