How to clean aluminum surface oxidation?

It is not recommended to deal with aluminum surface oxidation. Aluminum oxidation will form a dense aluminum oxide film on the surface, which will prevent the internal aluminum oxidation. Its chemical properties are the same as alumina. However, unlike ordinary oxide films, anodized aluminum can be dyed by electrolytic coloring. If treated, aluminum is a chemically active metal, so it will continue to react with oxygen to produce alumina. If treated all the time, aluminum will eventually become thinner and thinner.

Anodizing can significantly improve the corrosion resistance of aluminum alloy, improve the surface hardness and wear resistance of aluminum alloy, and have good decoration after proper coloring treatment. The coloring technology of anodic oxide film of aluminum and its alloys can be divided into three types: chemical coloring, electrolytic coloring and electrolytic whole coloring.

Anodizing is carried out under high voltage, which is an electrochemical reaction process. Conductive oxidation (also called chemical oxidation) does not need electricity, but only needs to be soaked in drugs. This is a pure chemical reaction. Anodic oxidation takes a long time, often tens of minutes, while conductive oxidation takes only tens of seconds.

Aluminum is a white light metal, and its content in the earth's crust is second only to oxygen and silicon, ranking third. Aluminum is very important and widely used in aviation, construction and automobiles.