For structural design, aluminum die-casting process will definitely be encountered in the work. The following is a summary of the surface treatment methods of Aluminum Die Casting Components:

1. Phosphating of aluminum
The effects of accelerator, fluoride, Mn2+, Ni2+, Zn2+, PO4; and Fe2+ on the phosphating process of aluminum were studied in detail by means of SEM, XRD, potential-time curve, and film weight change.

Second, the alkaline electrolytic polishing process of Aluminum Die Casting Components
The alkaline polishing solution system was studied, and the effects of corrosion inhibitors, viscosity agents, etc. on the polishing effect were compared, and an alkaline solution system with good polishing effect was successfully obtained. Additives that improve longevity while also improving polishing results.

3. Environmentally friendly chemical polishing of aluminum and aluminum alloys
Determined to develop a new environmentally friendly chemical polishing technology based on phosphoric acid monosulfuric acid, which should achieve zero emission of NOx and overcome the quality defects of previous similar technologies. The key to the new technology is to add some compounds with special effects to the base fluid to replace nitric acid. To this end, it is first necessary to analyze the triacid chemical polishing process of aluminum, especially the effect of nitric acid. The main function of nitric acid in chemical polishing of aluminum is to inhibit pitting corrosion and improve polishing brightness. Combined with the chemical polishing test in pure phosphoric acid-sulfuric acid, it is believed that the special substances added in phosphoric acid-sulfuric acid should be able to inhibit pitting corrosion, slow down general corrosion, and must have better leveling and brightening effects.

4. Electrochemical surface strengthening treatment of aluminum and its alloys
The process, properties, morphology, composition and structure of ceramic-like amorphous composite conversion films formed by anodic oxidation deposition of aluminum and its alloys in neutral systems were preliminarily discussed.

Five, YL112 aluminum alloy surface oxidation treatment technology
Aluminum Die Casting Components are widely used in structural parts of automobiles and motorcycles. In the process of various heat treatment, machining, transportation and storage, the metal surface will inevitably be oxidized, resulting in an uneven oxide layer. At the same time, it is also easy to be polluted by various oils and adsorb some other impurities. Oil stains and some adsorbates, the thinner oxide layer can be cleaned with solvent, chemical treatment and mechanical treatment successively, or directly treated with chemical treatment. For severely oxidized metal surfaces, if the oxide layer is thick, it cannot be directly cleaned with solvent and chemical treatment, but it is better to perform mechanical treatment first.

Usually treated Aluminium Die Casting Components surfaces are highly reactive and more susceptible to recontamination by dust, moisture, etc. For this purpose, the treated metal surfaces should be glued as quickly as possible.