Alkaline Zinc Plating Revisited

Alkaline non-cyanide zinc (ANCZ) plating has been prevalent in the plating industry for about 50 years. It has become a preferred process for finishers who require a fairly bright zinc-plated finish on parts that have challenging geometrical shapes. ANCZ is typically the chosen zinc process for complicated geometrical shapes due to its ability to plate zinc at a preferred low ratio of zinc thickness from the high current density areas to the low current density areas. Thickness ratios can range anywhere from 1:1 to 2:1 from the high current density area to the low current density area. Bath … [Read more...]

Nickel Stripper Issues and Answers

A customer alerted us to an issue with their acid-based anodic nickel stripper. The issue had been ongoing for at least a couple of months and they had tried many different things to solve the issue. One of the issues was the automatic backwash filtration system had been down for an extended period. It was thought that was the main culprit, based on the appearance of the strip solution showing a great deal of floating solids that would settle to the bottom when there was no circulation. Filtration Fixed, but… The filtration system was fixed, and the customer decided to dump and make … [Read more...]