Environment-friendly aluminum passivator
Environment-friendly aluminum passivator------liquid, no Cr+6
ⅠPerformance and application domain
Aluminum passivator is a kind of liquid product for passivation treatment , applied to chemical conversion coating process for aluminum and its alloys, and not containing Cr+6. After mixing with water, in the dipping and spraying application, it can form an amorphous inorganic coating on metal surface. The coating has the functions as follows:
* It has good adhesion to painting coating and good resistance to corrosion.
* Bare coating has very strong corrosion resistance.
* Coating has lower conductive resistance .
Aluminum passivator can be used in dipping or spraying process.
Aluminum passivator coating is with color, which depends on alloy composition and operation conditions
Ⅱ characteristics
Appearance: dark green transparent liquid
Specific gravity : 20°C 1.015-1.017
Be soluble to water.
Acidity product
Ⅲ Preparation: 1000L, mixing with deionized water.
Concentration : 5-8% (spraying) 15-20%(dipping)
Temperature: 30 to 40 °C
Treatment time: 2 -4 min (spraying) 5 -10min (dipping)
Spraying pressure 1-1.5bar
Adjust indexes according to requirements.
Ⅳ Process flow: dipping
1.Pre-degreasing—2. degreasing—3.water rinsing—4. water rinsing—5.delustering —6. Water rinsing —7. Pure water rinsing—8. Passivation— 9. Water rinsing— 10. Deionized water rinsing—11. Drying
V Package
25KG/barrel, 200Kg/barrel
