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Surface finishes

Services d’anodisation aluminium

Nous proposons l’anodisation de type II et III, qui sont des finitions de surface idéales pour les pièces en aluminium. L’anodisation renforce les pièces en aluminium et est disponible en plusieurs couleurs, selon le type. Tous les types d’anodisation augmentent le délai d’exécution et le coût par pièce.

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Anodizing type II

Surface preparation Colors Glossiness Cosmetic availability Thickness** Visual appearance
As machined (Ra 3.2μm / Ra 126μin) Clear, Black, Red, Blue, Orange, Gold Glossy (Above 20 GU) No 50μm to 150μm Parts are anodized directly after machining. Machining marks will be visible.
Bead blasted Clear, Black, Red, Blue, Orange, Gold Matte (Below 10 GU) Cosmetic on request for clear: 8 to 12μm(0.0003” to 0.0004”) black and color: 12 to 16μm(0.0004” to 0.0006”) Grainy texture, matte finish
Bead blasted Clear, Black, Red, Blue, Orange, Gold Glossy (Above 20 GU) Cosmetic on request for clear: 8 to 12μm(0.0003” to 0.0004”) black and color: 12 to 16μm(0.0004” to 0.0006”) Grainy texture, glossy finish
Brushing(Ra 1.2μm / Ra 47μin) Clear, Black, Red, Blue, Orange, Gold Glossy (Above 20 GU) Cosmetic on request for clear: 8 to 12μm(0.0003” to 0.0004”) black and color: 12 to 16μm(0.0004” to 0.0006”) Parts are manually brushed to reduce marks, then anodized. Brushing lines will be visible.
Tolerances for all surface preparations are held after anodizing

Anodizing type III

Surface preparation Colors Cosmetic availability Thickness Visual appearance
As machined (Ra 3.2μm / Ra 126μin) Black, Natural (thicker layers will appear darker) No 35 to 50μm(0.0013” to 0.0019”) Parts are anodized directly after machining. Machining marks will be visible.
Non standard requests

* We supply a range of standard colors (see Color options). If you need a particular RAL or Pantone color code, please contact sales@hubs.com

**As a standard our anodizing thickness will follow ISO 7599: ISO class AA10 (for clear) and ISO class AA15. If your parts require different standards, please contact sales@hubs.com

Color options for aluminum anodizing type II

Color anodizing can have some variation in color due to standard alloy tolerance variations. Check the color scheme below to see the color range.

Black (Black MLW)
Similar to: RAL 9004, Pantone Black 6
Clear
Similar to: depends on material
Sample part showcasing red anodizing
Red (Red ML)
Similar to: RAL 3031, Pantone 1805
Sample part showcasing blue anodizing
Blue (Blue 2LW)
Similar to: RAL 5015, Pantone 3015
Sample part showcasing orange anodizing
Orange (Orange RL)
Similar to: RAL 1037, Pantone 715
Sample part showcasing gold anodizing
Gold (Gold 4N)
Similar to: RAL 1012, Pantone 612

Color options for aluminum anodizing type III

Sample part showcasing aluminum anodizing type III in black color
Black
Sample part showcasing aluminum anodizing type III in natural color
Natural
(thicker layers will appear darker)

Design considerations for aluminum anodizing

  • Anodizing involves suspending parts via a “jig” or “rack.” This will leave marks on your part where anodizing wasn’t possible. If there are areas on which you can’t accept “jig” marks, please remember to include a technical drawing indicating these areas and follow our cosmetic procedure. Learn more about this on our surface finishing page
  • Anodizing insulates your parts, reducing their conductivity.
  • Masking is not required by default, as anodizing doesn’t raise the thickness of your part significantly. Remember to indicate in your CAD file whether you want specific part areas to be masked or plugged.
  • Type III anodizing, in contrast, adds substantial thickness to your part’s surface. We recommend plugging and masking threaded/reamed holes or other critical-to-function surfaces.

Le processus d’anodisation d’Hubs

L’anodisation est un procédé électrolytique permettant à la fois de protéger les pièces en aluminium contre l’usure et la corrosion et d’améliorer leur aspect cosmétique. Voici les étapes de base de l’anodisation d’une pièce :

  • Connectez la pièce à une anode.

  • Immergez la pièce dans une solution électrolytique acide.

  • Appliquez une cathode à une électrode métallique dans la solution.

  • Les ions positifs réagissent avec les ions négatifs de l’oxygène et la surface devient poreuse.

  • Une couche d’oxyde d’aluminium se forme alors sur la pièce.

  • Utilisez des inhibiteurs de corrosion ou des colorants à des fins cosmétiques.

  • Scellez les nanopores.

Envoyez vos pièces anodisées en production dès aujourd’hui

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