Black Anodizing For Aluminum Prototype

The commonly used for aluminum prototype is black oxidation treatment which is to anodize the aluminum through an electric current in the sulfuric acid electrolyte to form a thin oxide film of about 10 microns on the aluminum surface, and then use a black organic dye to prepare the dyeing solution Do dyeing.

Because the artificially formed oxide film has many small pores invisible to the naked eye, melanin can enter all the pores, making the originally silver-white aluminum surface black.

In order to achieve black matte, it can be sandblasted before oxidation to form a matte surface, which becomes matte black after oxidation coloring.

Black oxidation anodizing treatment of aluminum prototype surface is a very complicated process. Various colors can be obtained through oxidation(anodizing), which requires the use of various chemical raw materials, mainly various acids, such as: phosphoric acid, sulfuric acid, nitric acid and other chemical raw materials , to go through many processes, must also be heated.