1. TR-295H Properties
1. Trivalent chromium passivation process without hexavalent chromium has passed SGS international certification.
2. It is applied to the blue and white passivation process of zinc plating and has particularly excellent anti-corrosion performance.
3. Trivalent chromium solution can reduce the cost of wastewater treatment and meet the environmental protection requirements of customers to disable hexavalent chromium passivation film.
4. The passivation solution is stable, long service life and can be produced continuously.
5. This product has excellent anti white rust ability. The white fog time in neutral salt fog test can reach more than 72 hours. When used in combination with sealant, the salt fog test time can be improved.
2. TR-295H Technological process
Zinc plating → Washing with water → Brighten with dilute nitric acid → Washing with water → TR-295H → Washing with cool water → Washing with hot deionized water → drying
3. TR-668 Operating Condition
| Operating condition | Operating range |
| TR-295H | 30-70 ml/L(depends on passivation time) |
| Immerse time | 30-60s (The higher the content, The less the passivation time) |
| Temp. | 20-30℃ |
| pH | 2.0-3.0 |
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