Bright Zinc , alkaline for rack and barrel plating , ZN 50
Bright Zinc ZN 50 is an alkaline, non-cyanide process for rack and barrel plating. Features of Bright Zinc ZN 50 are as follows:
excellent metal distribution
especially good adhesion of zinc layers
high cathode current density range
The zinc deposits are bright over a wide current density range, and can be easily chromated or passivated.
The information in this data sheet is based on laboratory as well as practical experience. Figures quoted for operating limits and replenishment quantities are for guidance. Actual values necessary will depend on the components being plated (material and geometry), their application and plating plant conditions.
|
| Optimum |
|
| Zinc ions | 8 - 15 | － | g/l |
| Sodium hydroxide | 90 - 130 | － | g/l |
| Sodium carbonate | < 60 | － | g/l |
| Starter ZN 51 | 15 - 25 | 20 | ml/l |
| Replenisher ZN 52 | 0.5 - 2 | － | ml/l |
| Additive ZN 53 | 5 - 20 | － | ml/l |
| Additive ZINC P1 | 1 - 4 | － | ml/l |
| Additive ZINC P2 | 2 - 8 | － | ml/l |
| Temperature: | 20 - 30 | 25 | °C |
| Cathodic current density: | Max 5 | A/dm² |
| Anodic current density: | > 10 | A/dm² |
| Cathodic current efficiency: | see table below |
| Deposition speed: | see table below |
