Summer is the time when aluminum prodsucts such as aluminum sheets, aluminum coils, and aluminum strips are exposed to water corrosion and oxidation. Although there is a classification of aluminum oxide sheets in aluminum sheet prodsucts, the oxidation of aluminum oxide sheets and aluminum sheets are completely different things. The difference between alumina sheet and aluminum sheet oxidized:
1. Alumina sheet generally refers to: after the aluminum sheet is oxidized by acid and alkali, a protective film is formed on the surface of the aluminum sheet. The general oxide film is silver-white. If customers have special requirements, they can also be oxidized into different colors according to customer requirements.
Oxidation is divided into: ordinary oxidation, anodic oxidation and hard oxidation.
The ordinary oxidation of aluminum sheet refers to the formation of a protective film on the surface of the aluminum sheet after the aluminum sheet passes through the acid and alkali launders to clean the surface of the aluminum sheet, which is called an oxide film.
Anodizing of aluminum sheet refers to a process in which the aluminum sheet is energized during the oxidation process after ordinary oxidation.
Then the difference between anodized aluminum sheet and hard anodized aluminum sheet is: the depth of anodized oxide film is called shallow, and the depth of hard anodized oxide film is called deep.
2. The oxidation of the aluminum sheet generally refers to the same corrosion phenomenon on the connected part of the aluminum sheet or aluminum coil, and the size and pattern of the corrosion area are the same.
The reasons for this situation:
1: The temperature is too high when the aluminum sheet or aluminum coil is packaged. Steam is formed in the package, and the aluminum sheet and aluminum coil are corrodsed due to moisture.
2: The aluminum sheet or aluminum coil is exposed to rain, so that the rainwater can be poured into the package. The aluminum sheet and aluminum coil are corrodsed.
3: Corrosion will occur in aluminum sheets and aluminum coils in an environment with high humidity.
How to avoid this kind of phenomenon:
1: Let the aluminum sheet and aluminum coil cool naturally before packaging.
2: The fan can be used to cool down the aluminum sheet and aluminum coil.
3: When packaging, the aluminum sheet and aluminum coil are packaged with plastic sheet first, and then packaged with cardboard.
4: In the process of cargo transportation, tell the driver to cover the tarp.
5: In a high degree environment, put more desiccant in the package. And put the aluminum sheet and aluminum coil in a relatively dry environment.