Dacr Technique
Treatment envelope and mechanism of anti-rust
Advantages of Dacr

1¡¢Anti-rust property (Salt spray test) and durability (cyclic test) are more superior

Salt spray After test 480 hour execution Salt spray After test 2000-hour execution
1. Dacr
2.Ni/Zn £º BLACK
3.Ni/Zn £º YELLOW
4.Fe/Zn £º YELLOW
5.Fe/Zn £º BLACK
6.Galvanized Zn £º YELLOW
7. Galvanized Zn £º GREEN
8. Fusion zinc plating
After cyclic test 480 hour execution  

2¡¢Hot corrosion-resisting properties are superior

Surface status after heating for 12 hours
at 300¡ãC
Zinc Plating: YELLOW

 Dacr Treatment

Surface status after heating for 12 hours
at 300¡ãC
Zinc Plating: YELLOW

 Dacr Treatment

3¡¢Preventing the electrochemical corrosion against AI

1.Dacr treatment
2.Ni/Zn¡¡YELLOW
3.Ni/Zn¡¡BLACK
4.Fe/Zn¡¡YELLOW
5.Fe/Zn¡¡BLACK
6.Galvanized Zn yellow
7.Galvanized Zn green
The enlarged photograph after the screws being removed

4¡¢Avoid the electroplating brittleness

Galvanized Treatment Dacr Treatment
  Hold Time Good Articles Defect Articles
Dacr Treatment 100hr not reached
100hr over 		90
90		 0
0
Zinc Plating
(has not passed through drying treatment)		 100hr not reached
100hr over 		0
0		 90
90
Zinc Plating
(has passed through drying treatment)		 100hr not reached
100hr over 		30
12		 60
78

5¡¢ Superior Permeability


6¡¢ Recoating can be done at Dacr treatment surface


7¡¢ It can treat many metals


8¡¢ Don't worry about environmental pollution occurrence



 
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