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OUR ACTIVITIES
Treatment by chemical conversion
Chemical chromating (Alodine 1200)[...]
Treatment by electrolytic conversion
General information
Anodising: anodic oxidation in sulphuric acid and anodic oxidation in chromic acid transform the aluminium layer into an alumina layer, protecting the metal from corrosion.
Colouring: The pores created during the anodising process, absorb colour with no effect on the metal nature of the aluminium.
Sealing: Protects the anodised aluminium from corrosion by sealing the pores. The surface of the metal becomes hard and smooth.
OChromic Acid Anodising (OAA): Bengough-Stuart process, Process BF5
Uses:
Enables a material health inspection to be carried out before sealing
Anti-corrosion treatment
BF5 Treatment: Optimised sealing, primer treatment for painting.
Acts as a resist if hard anodising is to be carried out at a later stage
Advantages:
Offers excellent protection against corrosion
Barely modifies tolerance values (virtually no swelling)
Electrical insulation
Bath capacity :
(L) 1900 mm x (l) 500 mm x (P) 850 mm
Sulphuric Acid Anodising (SAA) Titanium Anodising (TA)
This type of anodising is applied to aluminium and its alloys. It results in layers of a thickness between 5 and 25 µm (of which 1/3 is excess thickness: swelling)
Uses:
Decorative coating
Coating subjected to frequent cleaning
Part subjected to slight abrasions
Advantages:
Excellent protection against corrosion
Easy to colour
Electrical insulation
Resistance to friction and abrasion
Bath capacity :
(L) 1900 mm x (l) 500 mm x (P) 850 mm
Electrolytic deposition
Silver or nickel-cadmium coatings, used as protection on steel [...]
Other surface treatments
Passivation of stainless steels [...]
