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How does zinc alloy die casting solve the problem of poor corrosion resistance

2023-12-29 hits:0 source:News



  Cause analysis:

  1、 Deviation of various element contents in alloys:

  1. The Cu content is too high;

  2. Low Mg content;

  3. Ni content is too high;

  2、 Zinc alloy die castings have not undergone surface protection treatment.

  3、 Damage to surface protective layer, such as machining surface, peeling of coating, etc.

  Corresponding measures:

  1. Optoelectronic spectroscopic analysis; The chemical composition of the components should be strictly controlled within the range required by the standard, preferably close to the median.

  2. The working environment is not particularly harsh; It can be shot peened or polished. The working environment is harsh, and the surface needs to be chrome or nickel plated.

  3. The zinc alloy die-casting processing surface is best used as an assembly surface; Strictly control the quality of the coating, and no peeling, peeling, or leakage defects are allowed.

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