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Anodization for aluminum components

Some spare parts, especially the aliminum components, require for anodization treatment. Anodization treatment can increasethe wear resistance, corrosion resistance, weather fastness, insulativity and adsorbability of the aluminum parts. Anodiztion treatment is suitable for all aluminum components, such as aluminum machining components, aluminum die casting, aluminum gravity casting and aluminum forging parts.

Normally used methods are Hard anodization and Soft anodization. Below, lets' talking about them more detaily.

1. Hard anodization

Thickness of anodization layer is 25 - 150μm. Mostly used thickness of anodization layer is 50 - 80μm. Layer thickness less than 25μm usually used for products with teeth, spiral parts, etc. For aluminum parts with wear resistance and insulativity requirement,the thickness should be about 50μm.

Anodization treating methods include Hard anodization of sulphuric acid,Hard anodic oxidation of oxalate,Hard anodic oxidation of mixed acid. The mostly used method is Hard anodic oxidation of oxalate.

Preparation before anodization includes processes of removing sharp edges, making smooth roughness, leaving certain machining allowance caused by thickness of the coating layer, designing special jigs, and protecting the not required anodizing surface.

2. Soft anodization

Similar process as hard anodization, but using different chemical liquids and achieving different coating thickness and hardness layer.Mostly, soft anodization can achive surfaces with more colours, such as red, yellow, green, etc.

If you have products required anodization treatment, please contact us.