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Why Should You Anodize Your Aluminum Extrusion?

by Nice Rapid | Mar 25,2021 | Aluminum Extrusion

After you've finished the production of your aluminum extrusion parts and products, the next question is always how to finish it. With the current competitive manufacturing and consumer sector, clients are now looking for aesthetically pleasing and modern parts and products that will match their specifications and requirements.

There are a wide variety of options to choose from, this can be quite tricky and exhaustive especially if you don't know which method to choose. One of the most highly recommended options is anodizing. In this post, we are going to show you exactly why you should choose it.

Why choose Anodization? And, why would you want an iodized fish?

Aluminum has a naturally occurring oxide film that protects it against corrosion. Anodization is a process that most extruders use to thicken the film, all of the profiles are inserted onto the solution; a direct current, high amperage, and low voltage.

anodized aluminum profile

Anodization will

  • Increases corrosion resistance.
  • Increase resistance to wear.
  • It creates a porous surface that is ideal for accepting dyes.
  • Provide better paint adhesion for paint primers and glues.
  • Improve surface emissivity.

Anodization Will Not

  • Enhance the strength of the aluminum itself.
  • Brings a higher electrical conductivity within the anodization layer.

Reasons of anodizing

If you are looking to apply color to your aluminum extrusion project, anodizing is the ideal solution that will provide you with the right look and appearance. When an aluminum material is oxidized, it will create a porous surface on the oxidation layer making it perfect for die application.

The dye will slowly seep onto the pores, after the application of the dye all of the pores will be sealed. What this essentially means is that the dye will be locked in essentially becoming part and parcel of the aluminum. The dye will be wholly embedded on the oxidation layer thus the color won’t fade or peel with sunlight.

Will anodizing improve corrosion resistance on aluminum extrusion applications?

One of the main purposes and roles of anodizing is to enhance the corrosion resistance of aluminum parts and products. Not only will extend the longevity of the product but also boost its strength making it ideal for harsh environments.

Anodized aluminum extrusions are mostly used in aquatic environments even in space attesting to their robustness and toughness.

Does anodizing reduce electrical conductivity?

Other applications need electrical conductivity, it has been proven that anodized finishing is more than likely to significantly reduce electrical conductivity in the oxidation layer. If you are looking to hit two birds with one stone and achieve both electrical conductivity and corrosion resistance then the only solution is dual finishing your extrusion layer.

In layman's terms what it means is you can do a chromate conversion coating as well as anodizing the aluminum. With dual-finish you’ll achieve the much-desired corrosion resistance as well as electrical conductivity.

Anodizing all of your aluminum extrusion goes a long way in enhancing the durability of your parts and products ensuring that they stand out in the market.

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