We know that coloured aluminium sheets are usually those that have been spray-dyed with PE and PVDF spray materials. Unlike the original aluminium colour of silver and white, aluminium sheets can be available in a wider range of colours. However, at the same time, the colour of aluminium sheets of different compositions will change accordingly after they have been anodised, so you can choose the right type for you after comparing the traditional coloured painted and anodised coloured aluminium sheets. So let's have a look at the colours of anodised coloured aluminium sheets next!
If we look at the requirement for a colourless and transparent oxide film after oxidation, the 5 and 6 series aluminium alloy sheets are better and can also be coloured after oxidation. If all that is required is the ability to anodise and form a dense anodised film, and there is no requirement for colour, most aluminium alloy sheets can be oxidised. However, before selecting the oxidation process, we should have an understanding of the aluminium or aluminium alloy material, because, the quality of the aluminium sheet material and the different ingredients it contains will directly affect the quality of the coloured aluminium sheet after anodising. For example, if the surface of the aluminium has bubbles, scratches, peeling, roughness and other defects, all defects will still be visible after anodising. The alloy composition, on the surface appearance after anodising, also has a direct impact. For example, the presence of some copper can cause coloured aluminium sheets to turn red, while silicon can make them grey. These are all related to anodising and will be described in detail in the next article, and we hope to help you in the process of purchasing aluminium sheets and coloured aluminium sheets.
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