In the electrolytic cold zinc plating process the material to be treated is adequately degreased and prepared before being immersed in an electrolytic, acid or alkaline solution, containing zinc salts. Finally, a passage of current is created between the piece and the solution which causes the metal zinc to deposit on the surface of the piece itself.
After galvanizing, the particular treated enters in a passivation bath which creates a thin protective film which, once dried, increases resistance to atmospheric corrosion and improves its appearance. It is possible to apply an additional post-passivation sealant to increase corrosion resistance and smoothness.
The aesthetic aspect is metallic and the coloring depends on the passivation applied after the zinc layer. The treatment can take place in frame or barrel cycle : the evaluation is generally made by the customer based on technical needs and aesthetics required. Similarly, the type of passivation required is evaluated.
The cold electrolytic galvanizing allows a control to carry out at a micrometric level, a good aesthetic result and an excellent quality and price ratio. A further advantage of the treatment is its reversibility: it can be removed and applied again without compromising any characteristic of the substrate.
The materials to be treated can range from any ferrous alloy to aluminum or brass, making the coating affordable therefore from any product sector use of metals. Carpentry, packaging, hydraulics, automotive are just a few examples of sectors that make wide use of them.