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How to solve the problem of poor corrosion resistance of zinc alloy die castings?

2023-12-14 hits:0 source:News

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  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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