Hard Anodisation
Hard anodisation
Hard anodisation is a special variety of anodisation.
Advantages:
With this process it is possible to manufacture especially hard, thick and abrasion-resistant layers that satisfy industry’s requirements for:
- Abrasion
- Friction
- Electric breakdown field strength
- Corrosion resistance
Application:
Hard anodisation is used, among other things, for:
- Cylinders
- Toothed wheels
- Bearings
- Piston rods
- Clutch discs
Structure and appearance after treatment:
- The impression of metal is retained
- The hard anodisation layer is transparent so that the surface can be given structure or coloured black
- The surface is given a light brown to dark grey colour according to alloy, my layer and hardness
- For a standard hard anodisation the surface becomes rougher than with traditional anodisation HAI Horsens can minimise the roughness of the surface
Layer thickness:
- 30-150 my depending on the alloy an the process
- With 50 my, a hardness of 400-450 HV can be achieved depending on the alloy and the process.
Colouring:
- Hard anodisation can be coloured black
Alloys:
- The majority of alloys can be used
Standards
HAI hard anodises in accordance with DS/EN 12373 and Mil-A-8625 Type III/ Class 1/ Class 2, as well as customer-specific standards. Certificates and reports of surface tests from our own laboratory can be drawn up with the customer.
Alloys
- Al99/ 99,5
- AlMn1 - AlMn1Mg0,5/1 - AlMnCu
- AlMg1 - AlMg2,5 - AlMg3 - AlMg5
- AlMgSi0,5/ 0,7/ 1
- AlMg2Mn0,3/ 0,8
- AlZnMgCu0,5/ 1,5
Standards
HAIs specific hard anodisations:
- Type 2000
- Type 6000
- Type 7000