[China Aluminum Industry Network] Aluminum profiles have been used for many years in building materials such as doors and windows, curtain walls, etc. due to their small specific gravity, easy processing, and large mechanical strength. Aluminum is a vivid light metal with silvery white luster. Its corrosion resistance has the following two characteristics:
The higher the purity, the better the corrosion resistance. The first reason is that pure aluminum acts on the edge of the air and oxygen, producing a thin layer of fine natural oxide film on the surface of aluminum, which is faster and thicker than other metal oxide films. It further deters further corrosion of harmful gases and moisture in the air and plays a protective role.
Aluminum profiles have high mechanical strength but low corrosion resistance. Although the corrosion resistance of pure aluminum is good, the mechanical strength is poor, which restricts the use of aluminum to a certain extent. For this reason, we participate in the appropriate participation of other metals such as magnesium, copper, and zinc in aluminum to make various types of aluminum. The aluminum alloy greatly increases the mechanical strength of aluminum and greatly expands the application range, but its corrosion resistance is inferior to that of pure aluminum, and thus it can be corroded by oxidation. This requires powder coating to protect the aluminum profiles.
In addition to the high corrosion resistance, the powder-coated aluminum profiles also have many advantages such as diversified colors, good surface texture, etc., and take care of the construction of exterior wall coatings of various colors. .
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