How to solve the problem of poor corrosion resistance of zinc alloy die castings.80x20 aluminum extrusion

　　During the assembly process, zinc alloy die castings may experience premature oxidation or moisture corrosion on the surface. The reasons include: ① deviation in various contents of the alloy, ② lack of surface protection treatment for zinc alloy die castings, and ③ damage to the surface protection layer, such as peeling off of the machining surface and coating.

　　The following measures can be taken to solve the problem:

　　1. Optoelectronic spectroscopy analysis requires strict control of chemical composition during ingredient melting, ensuring that it falls within the standard requirements and is preferably close to the median;

　　2. Can be shot peened or polished;

　　3. It is best to use the machined surface as an assembly surface. Strictly control the quality of the coating, and no peeling, peeling, or leakage defects are allowed.

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