China promotion Environmental Aluminum passivation before powder coating

 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