Q: How can I reduce nickel plating defects over zinc die-cast substrate?
A: In the case of zinc die-cast the substrate is directly responsible for introducing zinc contamination to the nickel tank. Zinc is a toxin to nickel plating baths and will significantly reduce performance and bath life. It is important to address this issue early in the process which is typically:- surface prep
- copper plate
- nickel plate
- post treatment
The best corrective action is