Economical Potassium Chloride Acid Zinc Plating
ZN-638
I. Properties
1. This product is made up of brightener and base solution. It is a fast brightener with good plating.
2. The bath has excellent anti iron impurities. It is suitable for both rack plating and barrel plating.
3. The plating is easy to passivator with multicolor, white-blue, and white color because of its good gloss.
4. It is stable, with little consumption of brightener, wide range of temperature, high cloud point. It is suit for high temperature production.
2. Bath composition and Operation condition
| Bath composition and Operation condition: | Rack plating | Barrel plating |
| KCl | 180~220g/L | 200~240g/L |
| ZnCl2 | 60~70g/L | 40~55g/L |
| H3BO3 | 30~35g/L | 30~35g/L |
| ZN-638 A brightener | 0.3~1ml/L | 0.2-1 ml/L |
|
ZN-638 B base solution |
15-25ml/L | 15-25 ml/L |
| PH | 4.5~5.5 | 5.0~6.0 |
| Cathnode current density(Dk) | 0.5~5A/dm2 | 0.2~3A/dm2 |
| SK:SA | 1:1.5~2 | 1:1.5~2 |
| Anode | 0＃zinc ingot | 0＃zinc ingot |
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