Firstly, surface preparation is vital. The hardware parts should be thoroughly cleaned to remove any dirt, oil, or rust. Even a tiny residue can affect the quality of the oxidation layer. Solvent degreasing, mechanical cleaning, or chemical etching might be employed to ensure a clean and suitable surface.

Secondly, strict control of process parameters is essential. Parameters such as oxidation solution composition, temperature, and treatment time significantly impact the final result. For instance, an improper solution concentration could lead to uneven oxidation layers or poor corrosion resistance.

Finally, post - treatment care should not be overlooked. After oxidation, the parts may need to be rinsed thoroughly to remove any remaining solution. Additionally, appropriate sealing treatment can enhance the durability and appearance of the oxidation layer, protecting the hardware parts from environmental damage.