| 摘要 |
An anodizing method of outward spare parts for a wrist-watch comprising surface treatment, honing, racking, electrolyc degreasing, neutralization and coloring is characterized by anodizing solution composition of 10-30% H2SO4, 3-20g/l Al and the anodizing condition of 15-50V, solution temperature 5≦̸C±50, current density 1.5-3A/dm2 and the treating time 30-60 minutes and the treating dye solution of concentration 0.1-20g/l, pH 3.5-8.0, 50-70≦̸C and treating time 30seconds-60minutes. This method has the advantage of increased hardness and the variety of color with the use of Al. The Al used are alloy number 5052, 5056, 5N01 by KSD6701-82 and KSD6763-83.
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