Causes of powder coating for aluminum profiles

[China Aluminum Industry Network] Aluminum profiles have been used for many years in buildings, such as doors and windows, curtain walls, etc. due to their small specific gravity, easy processing, and large mechanical strength. Aluminum is a contrasting and vivid light metal with silvery white luster. Its corrosion resistance has the following two characteristics:

The higher the purity, the better the corrosion resistance, mainly because of the effect of pure aluminum in the air and oxygen, producing a thin layer of fine natural oxide film on the aluminum surface, which is faster and thicker than other metal oxide films. This in turn hinders the further corrosion of harmful gases and moisture in the air, which results in a maintenance effect.

Aluminum profiles have high mechanical strength but low corrosion resistance. The corrosion resistance of pure aluminum is good, but its mechanical strength is poor, which restricts the use of aluminum to a certain extent. For this reason, everyone participates in the appropriate participation of other metals such as magnesium, copper, zinc, etc. in aluminum to make various types of aluminum. Aluminum alloys greatly increase the mechanical strength of aluminum and greatly expand its use, but its corrosion resistance is inferior to that of pure aluminum, and therefore it can be corroded by oxidation. This requires the powder coating to maintain the aluminum profile.

In addition to the high corrosion resistance, the powder-coated aluminum profiles also have many advantages such as color diversification, good appearance, and so on. They are compatible with various colors of architectural exterior coatings and are used to different building styles.

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