Trivalent black chromium plating additives HN-902 series
Product introduction:
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.
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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Sur-precision Metal Technology CO, Ltd., One of subordinates of Highnic Group, is a large-scale enterprise specializing in electroplating additive production and technological development. It locates in central part of Nonferrous Metal Industrial Development Zone, Nanhai, Foshan city, Guangdong, China. The company has established a R&D team and introduced world-class leading facilities to develop new electroplating technologies. The whole product series cover various metal finishing additives, PCB speciality chemical and PVB phosphorus copper anode, automobile aluminum wheels, etc.
HIGHNIC holds the worldwide leading position in general metal finishing technology, AS HIGHNIC's production base, Sur-precision Metal provides a wide rang of metal finishing additives covering technologies for the entire spectrum of decorative and functional surface treatment. It is used for various materials form steel, aluminum and magnesium to engineered plastic. Our principle is to create a long-term partnership with customers under the efforts of professional knowledge, extensive experience and progressive core technology.
