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Wednesday 17 July 2019
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An Anodised Finish for YourAluminium Extrusions

When purchasing aluminium from Edmo, you will have your choice of aluminium finishes. It is difficult to state which finish is the best but anodisingaluminium has many great benefits when compared to others. Anodising is done to protect aluminium extrusions from wear and tear. Aluminium oxide naturally occurs when aluminium comes into contact with oxygen. Anodising is the process of adding aluminium oxide to aluminium for its protective benefits. Anodising enables aluminium to be used for many functions and in many places such as in ships and rocket ships.

Protection from Damage

The major benefit of anodisingaluminium extrusions is to protect them from damage. The thick film of aluminium oxide will protect the metal encased within from a wide variety of wear and tear processes. The primary protection is against corrosion.

All metals corrode when they come in contact with a particular substance or even just air and water. By anodising, only the layer of aluminium oxide gets corroded and the metal extrusions within are protected. Anodising provides aluminium with such an incredible capacity for wear that it is used in the harshest of environments.

The increased durability of aluminium as a result of anodising has the bonus benefit of reduced maintenance of aluminium extrusions. Since they are rarely ever damaged, the cost and effort that it would take to repair other metals is simply eradicated. The only reason to replace an aluminium part would be the lack of oxygen and you would have to leave the planet for that. Anodisingaluminium will not make the aluminium stronger but it will make it unbelievably easy to maintain.

Ability to Dye

Another reason to anodisealuminium would be that it enables manufacturers and designers the ability to dye their extrusions. When you anodisealuminium, a porous surface is created in the aluminium oxide layer.

Dye can then very easily seep into the pores and after the dye is applied the pores can be sealed hence locking in the dye and its colour. The dye becomes part and parcel of the aluminium itself. Being able to give a metal colour enables aluminium to be used alongside other materials in a way that other metals cannot.

Increase in Metal Lifespan

Anodisingaluminium can significantly extend the aluminium’s lifespan because in the case of damage, you can always expose the metal to more oxygen and create a protective aluminium oxide layer. The metal can then last longer despite more substantial use.

Anodising will protect the metal from damage from ultraviolet rays from the sun, abrasions and harsh chemicals. Hence, aluminium can stay out in any environment without losing colour or structural integrity. Therefore, you save much in terms of money and effort that you would otherwise use in searching for replacement extrusions. Anodising will even increase the metal’s adhesive character further increasing its range of applications.

Reduced Conductivity

The only drawback to anodisingaluminium extrusions would be the reduction of electrical conductivity. The layer of aluminium oxide that covers the aluminium has less conductivity than the metal beneath it. However, there are strategies to overcome this disadvantage such as dual finishing where anodising is done alongside another form of finishing.