Trivalent Chrome Black Passivation Agent ; Passivator for zinc plating ; FF-5847
Properties
The two-component system does not contain hexavalent chromium, the passivation film is uniform and bright, and alkaline galvanized and acidic galvanized coatings are all applicable.
Trivalent chromium Black Passivation process for zinc coating.
Operating Instruction
Formula and Operation Condition | Range |
FF-5847A | 80~120 ml/L |
FF-5847B | 80~120 ml/L |
PH | 2.0~2.4 |
Temperature | Room temperature |
Passivation time | 30~80 s |
Anodic Current Density | 1.0~3.0A/dm2 |
Agitation | Mechanical moving or air agitation |