Many people define Dongguan hard anodizing as a common oxidation process. Since anodic oxidation, a type of chemical surface treatment, is not as widely used as electroplating, and anodizing like brushed oxidation is mainly used for decorative surfaces, let's find out if they are the same.

Dongguan Hard Anodizing

The answer is no. Hard anodizing is not a regular oxidation process. Hard anodizing typically results in black or the natural color of the oxide film, which is determined by the composition of the aluminum alloy material. The oxide film in hard anodizing is split, with half渗透 into the interior of the aluminum alloy and the other half adhering to the surface, causing the external dimensions of the product to increase and the internal bore to decrease after hard anodizing, whereas in regular oxidation, the external dimensions decrease and the internal bore increases.

The benefits of hard anodization lie in the significantly increased hardness of the metal after oxidation, reaching an HV500 hardness index. Moreover, its oxide layer is thicker than that of standard oxidation processes and boasts strong adhesion, making it less prone to flaking. An additional advantage is that despite all these benefits, it is non-toxic. Users can confidently wear or use alloys that have been treated with hard anodization.