Electrochemical Coloring Production Line

Aluminium alloy electrochemical coloring is a process of obtaining different colors by the "interference" effect on light through depositing very tiny metal and metal oxide particles on the bottom of the micro-pores on the porous anodic oxide film.
When coloring, put the aluminum alloy into a sulfuric acid solution to make a clean, transparent, and porous anodized film. Then move it into an acidic metal salt solution, impose alternating current treatment to it, and irreversibly electrodeposits metal particles on the bottom of the pores on the oxide film. The weather resistance, corrosion resistance, and service life of the electrochemically colored film are better than the ones of dyed film, and its energy consumption and coloring cost are much lower than the dyed film.
In addition to aluminum alloys, titanium alloys can also be electrochemically colored. The process is to form a transparent oxide film on the surface of the titanium alloy in an electrochemical manner and form different colors by the interference effect of the oxide film on the light. The surface of the colored titanium alloy can create more than four colors, such as green, blue, purple, and golden, and improves the wear resistance, corrosion resistance, and weather resistance. Similarly, this process can also apply stainless steel products, and it significantly expands the scope of stainless steel use. The mature color series includes colors such as black, brown, dark brown, navy blue, gem blue, blue, gray, light yellow, golden yellow, golden red, purple-red, sky blue, green, yellow-green.
Please note that it forms a transparent oxide film on the surface of silver-white stainless steel. It is not a colored coating. The surface does not have any coating and is non-toxic.

The process of electrochemical coloring: