Why aluminum alloys should be anodized by anodizing

Why aluminum alloys should be anodized by anodizing:

First of all, aluminum alloy has the advantages of light weight, corrosion resistance, good processing performance, high thermal conductivity and good electrical conductivity. However, aluminum alloys themselves also have many disadvantages and weaknesses.

1. The hardness of aluminum is relatively low, and the wear resistance is relatively poor.

2. The volume shrinkage of aluminum during the solidification process is very large.

3. High expansion coefficient of aluminum.

4. The melting point of aluminum is relatively low, and the use temperature cannot exceed 200. Therefore, the use at high temperature is limited.

5. The elastic modulus of aluminum is only 1/3 of steel.

6. The potential of aluminum is very negative, so when aluminum is in contact with dissimilar metals, as an anode, it is easy to cause serious galvanic corrosion.

The anodizing of aluminum is to overcome the above shortcomings of aluminum, mainly the defects of the surface properties of aluminum, thereby expanding the application range and service life of aluminum. Fundamentally, it is to improve the protection, decoration and functionality of aluminum alloys.

Anodizing protection mainly refers to preventing the corrosion of aluminum and protecting the appearance of aluminum. Decorative is mainly from an aesthetic point of view, improving its appearance quality, such as improving metallic luster, coloring various colors, etc. Functionality refers to increasing surface hardness, wear resistance, electrical insulation, etc. Taking advantage of the porosity of anodized films, it is also possible to impart electromagnetic and photoelectric functions to the surface.

So this is all that information that you need to know. We Haomei aluminum have a long history. I'm professional experience in the manufacturing and sale of our aluminum. If you want to buy it, you can contact us through emails.