Anodising of aluminium is an electrolytic surface treatment process where the work is made anodic in a acid solution. This is normally sulphuric acid, but this can be replaced with other acids for specialised coatings. The process is unlike other finishing methods. Where most processes coat the surface with an organic or inorganic deposit, anodising is a conversion of the base material itself to form a protective oxide coating.
This finish also goes by the names Silk Etch, Vapour Blasting, Slurry Blasting, Aqua Blasting and Wet Blasting. It is a blasting process where a slurry of water and an abrasive that is pressure boosted with compressed air is pumped through guns onto the part being processed. The choice of abrasive can produce finishes from a semi-bright to a textured finish.
READ MORE >