Aluminum alloy surface appears black, mildew phenomenon, how should be cleaned?

In industrial production and processing, aluminum alloy after a long time storage, the surface will appear black, mold and other oxidation corrosion phenomenon, will affect the quality of the product, appearance, price. Aluminum alloy surface appears black, mildew phenomenon, how should be cleaned?

In the process of aluminum alloy surface treatment, aluminum alloy surface cleaning process is very important. The surface cleaning process of aluminum alloy includes oil removal cleaning, oxidation removal cleaning, passivation treatment and other processes.

Aluminum alloy oil removal:

Immerse the aluminum alloy in the liquid of the aluminum alloy oil remover cleaner, wait a few minutes, and remove the water. The oil removal time needs to be adjusted according to the serious situation of the oil pollution on the surface.

At present, aluminum alloy oil removal cleaning process is the use of aluminum alloy special oil removal cleaning agent, by a variety of emulsifiers with emulsification, cleaning, solubilization, osmotic decomposition and other capabilities and a variety of organic salt scientific combination.

Aluminum alloy special oil removal cleaning agent in the composition, added aluminum alloy special corrosion inhibitor, in the process of oil removal cleaning, cleaning agent will not cause corrosion to the aluminum alloy matrix.

Aluminum oxide removal:

Immerse the washed aluminum alloy in the aluminum alloy mold remover tank, wait for a few minutes, wash clean. The time for removing oxidation of aluminum alloy needs to be determined according to the oxidation of the aluminum alloy surface.

At present, aluminum alloy peeling process is the use of aluminum alloy mold remover, after aluminum alloy mold remover treatment, can remove aluminum alloy surface oxide, get a clean surface consistent and has a certain luster of the natural aluminum alloy.

Finally, the washed aluminum alloy is passivated to keep it black and mildew free for a long time.