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Anodizing is a process in which an aluminum or aluminum alloy product is used as an anode and is placed in an electrolyte solution to be electrified, and an aluminum oxide film is formed on the surface thereof by electrolysis, which is called anodization of aluminum and aluminum alloys. After anodizing, the aluminum surface can generate several micrometers - hundreds of microns of oxide film. Compared with the natural oxide film of aluminum alloy, its corrosion resistance, wear resistance and decorativeness have obviously improved and improved.Hardware copper sand blast product Supplier
The type of anodization Anodization has long been widely used in the industry. There are many ways to name different names. The following classification methods can be summed up:
Divided by current type: DC anodizing, AC anodizing, and can shorten the production time to achieve the required thickness, the film is thick and uniform, and the corrosion resistance is significantly improved pulse current anodizing.
Divided by the electrolyte: sulfuric acid, oxalic acid, chromic acid, mixed acid and natural coloring anodized with organic sulfonic acid solution.
According to the nature of the film layer: ordinary film, hard film (thick film), porcelain film, bright modified layer, the barrier layer of the role of semiconductor and other anodizing.
The application of direct current sulfuric acid anodization is the most common, because it is suitable for anodization of aluminum and most of aluminum alloys; the film is thick, hard and wearable, and better corrosion resistance can be obtained after sealing. Film colorless and transparent, strong adsorption capacity, easy to color; processing voltage is lower, less power consumption; CNC turning copper sand blast product Supplier processing process does not have to change the voltage cycle, is conducive to continuous production and practical operation automation; sulfuric acid harm to humans than chromium acid, a wide range of goods , Low price, etc.
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