Trivalent Black Chrome Plating Additive

Trivalent Black Chrome Plating Additive

I.M.T's trivalent black chrome plating additives are developed for replacing the tradition hexavalent chrome plating agents. The process has excellent covering and dispersive ability, high tolerance against sulfate and chloride ion and without worry about the water pollution with easy waste disposal.

Details

Trivalent black chrome plating additive

I.M.T's trivalent black chrome plating additives are developed for replacing the tradition hexavalent chrome plating agents. The process has excellent covering and dispersive ability, high tolerance against sulfate and chloride ion and without worry about the water pollution with easy waste disposal.


Item No. HN-902

 

Application and advantage

1. Green products without hex chromium and simple waste water disposal

2. Even and esthetic coating with good covering power and dispersive ability

3. No organic solvent in the plating solution, excellent tolerance against sulfate and chloride ion

4. It won't cause bad plating result when power off, the deposition rate is faster than that of hexavalent chromium plating.

5. Adopting graphite anode can improve the quality and stability of the bath.

 

Composition

HN-904 make-up salt

HN-902 stabilizer

HN-905 Complexant

HN-906 wetting agent

HN-901 Additive


Bath composition and working conditions

Bath composition

working condition

HN-904 make-up salt

480-520g/L

HN-902 stabilizer

70-90 mL/L

HN-905 Complexant

18-22 mL/L

HN-906 wetting agent

1-3 mL/L

HN-901 Additive

25-35 mL/L

Metallic Chromium 

20-25g/L

Temperature

40-50°c

pH value

2.6-3.0

Cathode current density

10-22 amp./dm²

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