Anodic oxide films obtained using the hard anodizing

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Electrolyte have a “cold” metallic luster and, depending on the aluminum alloy, have different colors. On pure aluminum, with a process duration of up to 30 minutes, almost colorless films are formed, on technical aluminum with impurities, the films have a light golden color, on deformable aluminum alloys AMg2 and AMg2s, light golden coatings with a greenish tint are obtained, on magnesiums of the AMg6 type, black oxide films are formed, on D1T and D16T alloys, oxide films have a chinese overseas america data color, on unhardened alloys, such as B95, the color of the anodic coating varies from gray-blue to blue-black.

ALLOY BRAND COLOR OF ANODIC OXIDE COATING
A99, A97, A95, A5, A0 Light gray, greenish-golden
AMr3, AMr5, AMr6, AMc, From grey to grey-black
B95 From grey-blue to blue-black
AМr2, AМr2c From greenish-golden to brownish-golden
D1, D16 From blue-gray to green-gray
AL2, AL9, AL11 From light grey to dark grey
The standard thickness of hard anodic films used as an electrical insulating coating is 20-40 μm; to obtain a wear-resistant coating that works on friction, the thickness of the anodic films is 40-70 μm; to obtain a heat-insulating coating layer, the recommended thickness of the anodic films is within 100-120 μm.
Stages of the technological process:
CHEMICAL DEGREASING → ETCHING → BRIGHTENING → HARD ANODIZING* → PAINTING (if necessary) → SEALING
*To obtain a shiny anodized surface, after chemical degreasing and brightening, an electrochemical polishing stage is carried out (the etching stage is not carried out)

HARD ANODIZING OF ALUMINIUM
ANODIZING COST COST OF ANODIZING
Moscow / Saint Petersburg Set for 15 l Set for 30 l Set for 50 l
80-97 rub./dm2 83-98 rub./dm2 ~ 32 rub./dm2 ~ 27 rub./dm2 ~ 23.5 rub./dm2
Specific consumption rate of reagents for anodizing 1 square meter: reagent “OXIDANT-T100” – 4-5 g; reagent “ANODIC OXIDANT” – 1.2-1.4 g. Using the “HARD ANODIZING OF ALUMINUM” kit for 15 liters, it is possible to anodize parts with an area of ​​about 18 square meters.