TR-295 Trivalent chromium blue white passivation process with high corrosion resistance ; Passivator for zinc plating
1. TR-295 Properties
This product is trivalent chromium passivation process, has passed SGS international certification.
It is used in blue and white passivation process of zinc plating and has excellent corrosion resistance.
Trivalent chromium solution can reduce the cost of wastewater treatment and meet the requirements of environmental protection.
It has a long service cycle, and it is better to use the subsequent washing tank liquid backflow.
The passivation solution is stable with long service life and can be produced continuously.
This product has excellent resistance to white rust, neutral salt spray test time can reach more than 72 hours, and the use of sealing agent can also improve the salt spray test time.
2. TR-295 Technological process
Zinc plating → Washing with water → Brighten with dilute nitric acid → Washing with water → TR-295 → Washing with cool water → Washing with hot deionized water → drying
3. TR-295 Operating Condition
|Operating condition||Operating range|
|TR-295||30-60 ml/L(depends on passivation time)|
|Immerse time||10-40s (The higher the content, The less the passivation time)|