This protective treatment is applicable only on the aluminium and its alloys.
It is ideal as a pre-varnishing film.
Because of its chrome-aluminium oxides and salts, the chromate film enables the items to resist against the corrosive agents and ensures also a good corrosion-proof against some aggressive chemical agents e.g. the concentrated nitric acid.
It concerns the aluminium surface converting to a gold-yellowish mixed aluminium chromate and oxides.
It preserves the electric conductivity of the item and it gives rise a good looking to the whole surface.
Chromate coating plant
Semi-automatic Jigs plant equipped with tanks which dimensions are the following: 3,50x1,00x1,20 meters.
The chromate coating is suitable for aluminium and its alloys.
Drying oven on the plant and the surface-preparing/chromate tanks are kept at 35 degrees.