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OUR ACTIVITIES
Treatment by chemical conversion
Chemical chromating (Alodine 1200)[...]
Treatment by electrolytic conversion
anodic oxidation in sulphuric acid and anodic oxidation in chromic acid transform [...]
Electrolytic deposition
Silver or nickel-cadmium coatings, used as protection on steel, metal containing copper, aluminium and zinc alloys, are obtained by electrolysis
Electrolytic and chemical deposition: Silver plating
Applications :
Steels
Stainless steels
Copper alloys
Aluminium alloys
Advantages:
Higher electrical conductivity
Good resistance to friction, resistance to hot seizing (500°C)
Bath capacity :
(L) 350 mm x (l) 350 mm x (P) 400 mm
Electrolytic deposition: Cadmium plating
Applications :
Stainless steel
Steels
Copper alloys
Aluminium alloys
Advantages:
Poor resistance to electrical contact
Resistance to corrosion
Bath capacity :
(L) 1500 mm x (l) 700 mm x (P) 630 mm
Electrolytic deposition: Nickel plating
Electrolytic deposition may give a bright or dull finish:
- dull nickel plating has the appearance of raw nickel. These deposits withstand very high temperatures and have a high degree of ductility.
- bright nickel plating owes its brightness to the use of organic components called brightening agents. These chemicals, called "levellers", help smooth out the irregularities in the substrate.
Applications :
Stainless steels
Copper alloys
Aluminium alloys
Advantages:
Extremely fine structure
High degree of hardness
Corrosion resistance
Bath capacity :
Nickel sulfamate : (L) 1500 mm x (l) 400 mm x (P) 630 mm
Bright nickel : (L) 1500 mm x (l) 400 mm x (P) 630 mm
Other surface treatments
Passivation of stainless steels [...]
