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What are the matters needing attention in copper and aluminum casting

There are four precautions for copper and aluminum casting:

   1. When casting copper and aluminum castings, the parts and the hanger must be shaken frequently to ensure the uniformity of the plating color and prevent the phenomenon of mottling during silver plating that affects the appearance of the plating.

2. The actual surface area of copper and aluminum castings is many times larger than the calculated surface area. The impulse current density during electroplating is about 3 times higher than that of ordinary parts, and the pre-plating time is also longer than that of ordinary parts.


  3. Under the charged tank, use the impulse current density to electroplate the workpiece under the condition of shaking the workpiece for 5 minutes, and then switch to the normal current density. Because of the loose and porous metal structure of the copper-aluminum cast copper parts, strict process requirements are required during the electroplating process.

 4. The cleaning of each process should prevent the solution remaining in the pores from affecting the next process.

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