1. TR-668 Properties
1. Environmental trivalent chromium passivation solution, in line with RHOS directive, clean production processes.
2. The zinc plating workpiece layer appears translucent after white-blue passivation.
3. Economy passivation solution, impurities high tolerance, long life cycle and low cost.
2. TR-668 Technological process
Zinc plating → Washing with water → Brighten with dilute nitric acid → Washing with water → TR-668 → Washing with cool water → Washing with hot deionized water → drying
3. TR-668 Operating Condition
|Operating condition||Operating range|
|TR-668||40-70 ml/L(depends on passivation time)|
|Immerse time||10-40s (The higher the content, The less the passivation time)|