Anodized aluminum coil |
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Sulfuric acid anodizing process of aluminum as the anode placed in sulfuric acid electrolyte, the use of electrolysis, the anodic aluminum oxide film formed on the surface is known as sulfuric acid anodizing of aluminum. Because sulfuric acid anodizing current exchange inefficient, poor corrosion resistance of oxide film, the hardness is low, so it is rarely used. Is widely used at home and abroad DC sulfuric acid anodizing, anodized with other acid compared to production costs, characteristics and performance of oxide film has obvious advantages: 1. The production cost is low; 2. Film transparency; 3. corrosion resistance and good wear resistance; 4. electrolytic coloring, and chemical stain easily. |
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