Why should the surface treatment of aluminum products be done? After long-term exposure to the air, aluminum will turn black after chemical reaction with other elements. The corrosion potential of aluminum is relatively negative, and the surface treatment of aluminum alloy profiles can improve the corrosion resistance, decoration and functionality of the data.
Appearance treatment classification?
Chrome: suitable for aluminum and aluminum alloy, magnesium and magnesium alloy products. The chemical conversion film with a thickness of 0.5-4um is formed on the surface of the product, which has good adsorption property and is mainly used as the bottom coating layer.
Anodizing: make the surface of the product form a fine oxide layer with hardness of 200-300hv, and its wear resistance is excellent.
Electroplating: nickel plating, silver plating, gold plating, zinc plating, copper plating, chromium plating, etc.
Coating: also known as electrophoretic coating, it is divided into dip coating, spray coating, spray coating, brush coating, etc., mainly dip coating and spray coating. The colloidal particles of organic resin are deposited on the surface of the workpiece by electrochemical method to form a bright or colorful organic coating. Its corrosion resistance is good, not easy to change color, good adhesion.
Electroless plating: it is a method that metal ions can be recovered and deposited on the surface of parts with the help of the oxidation and rehabilitation effect of rehabilitation agent in the same solution during the period of no current passage.
Electrophoretic treatment: the colloidal particles of organic resin are deposited on the parts by electrochemical method to form organic coatings with bright or various colors.
The construction of aluminum alloy profiles requires its corrosion resistance, weather resistance, wear resistance, good appearance decoration, long service life and other characteristics. Only when the surface treatment of aluminum products is good, can it be used for a long time. After that, the appearance treatment must be carried out to make it meet the required requirements, so as to play the role of protective layer and decorative layer on the profile surface.
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