來源：http://www.xiangbolan.com 發布時間：2021-08-12 15:11:15
Aluminum profile has been widely used in doors, windows, curtain walls and other commodities of buildings for many years because of its small proportion, easy processing and high mechanical strength. Aluminum is a vivid light metal with silver white luster, and its corrosion resistance has the following two characteristics:
The higher the purity, the better the corrosion resistance, mainly because pure aluminum reacts with oxygen in the air, and produces a thin fine and dense natural oxide film on the aluminum surface, which is much faster and thicker than other metal oxide films, thus inhibiting the further corrosion of harmful gases and moisture in the air and playing a protective role.
Aluminum profiles have high mechanical strength but low corrosion resistance. Although pure aluminum has good corrosion resistance, it has poor mechanical strength, which restricts the application of aluminum to a certain extent. Therefore, we participate in appropriate magnesium, copper, zinc and other metals in aluminum to make various types of aluminum alloys, which greatly improves the mechanical strength and greatly expands the application range of aluminum, but the corrosion resistance is worse than pure aluminum, so it can be corroded due to oxidation. This requires powder coating to protect aluminum alloy profiles.
In addition to high corrosion resistance, powder coated aluminum profile also has many advantages, such as diversified colors and good surface texture, which are taken care of with various colors of construction exterior wall coatings.