Quite frequently the default level of steel corrosion resistance is too low for given usage. Spontaneously created firm barrier layer of oxides protecting against steel corrosion is very thin and vulnerable to mechanical damage. In case of unfavourable conditions like high moisture or contact with saltwater or other aggresive media there is a good risk of protection layer damage and consequently - corrosion. Electrochemical passivation is economically efficient and exceptionally effective method of improving natural corrosion resistance of metals. It is possible to increase the thickness of steel protection layer tenfold and provide its appropriate hardness and firmness. Such a protection layer is an excellent barrier against most common environmental corrosion factors. Electrochemical passivation has no impact on shape of processed detail - only its surface proprieties are modified in a positive manner.
Chemical passivation of steel leads to a tenfold increase in the thickness of the protective oxide layer on the surface of the product. If the process was carried out correctly, this layer is hard and tight, does not prone to flaking and permanently isolates the live metal from the corrosive influence of the environment. Passivation does not modify the shape of the treated surface, but only changes its properties, increasing its resistance to corrosion.
We achieve passivation by electropolishing and etching the detail