[Aluminum parts customization]Why do aluminum profiles need powder coating?

Why do aluminum profiles need powder coating?

I believe many people are very familiar with the aluminum profile, but many people may not know why the aluminum profile bending manufacturers to carry out powder spraying? Below Aluminum parts customization China would like to give you a detailed introduction.

Aluminum profile with its small proportion, easy processing, mechanical strength and other characteristics for many years widely used in the building doors and Windows, curtain walls and other products. Aluminum is a relatively active light metal with silvery white luster, and its corrosion resistance has the following two characteristics:

The higher the purity, the better the corrosion resistance of the CNC machining Aluminum alloy parts, mainly because the pure aluminum in the air and oxygen, the production of a very thin layer of dense natural oxide film on the surface of aluminum, than other metal oxide film generated faster and thicker, and then prevent the further corrosion of harmful gas and water in the air, has a protective effect;

Aluminum profiles have high mechanical strength but low corrosion resistance. The corrosion resistance of pure aluminum is good, but the poor mechanical strength, which to a certain extent, restricted the application of aluminum, therefore, adding the right amount of people in the aluminum magnesium, copper, zinc and other metals, made into various types of aluminum alloy, the mechanical strength of aluminium is greatly increased, greatly expand the application range, but poor corrosion resistance than pure aluminum, so it may because of oxidation and corrosion. This requires powder coating to protect the aluminum alloy profile.

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