Aluminum Powder Spraying Process Analysis
Aluminum profiles Aluminum alloys have been used for many years in building doors, windows, curtain walls and other products because of their small specific gravity, easy processing, and large mechanical strength. In addition to the high corrosion resistance, the powder-coated aluminum profiles also have many advantages such as a variety of colors and a good surface texture, which echoes with various colors of architectural exterior paints to adapt to different building styles. Because aluminum is a relatively light metal with a silvery white luster, it has corrosion resistance and has the following two main characteristics:
Aluminum powder coating
1. The higher the purity, the better the corrosion resistance, mainly because pure aluminum reacts with oxygen in the air, producing a thin layer of dense natural oxide film on the aluminum surface, which is faster and thicker than other metal oxide films. In many cases, aluminum profiles prevent the further corrosion of harmful gases and moisture in the air and play a protective role.
2. Aluminum profiles Aluminum alloys 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 application of aluminum to a certain extent. For this reason, people add appropriate amounts of magnesium, copper, zinc, and other metals into aluminum to make various types of aluminum. Aluminum alloys greatly increase the mechanical strength of aluminum and greatly expand the application range, but its corrosion resistance is inferior to that of pure aluminum. Therefore, aluminum profiles may be corroded by oxidation. This requires powder coating to protect the aluminum profiles.
Previous: Basic Knowledge on Aluminum Profile