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Cyanide Copper Plating Additive
Cyanide Copper Plating Process
1. Feature
1. Bright and smooth coating, with a dense and fine crystallization;
2. Wide range of current density, excellent performance in covering;
3. High-tolerance to impurities, the bath is easy to be controlled.
4. Selected to use in basic parts of different material, especially for zinc alloy die castings;
5. Easy maintenance with low-cost.
2. Conditions and Compositions of Bath
Material and Condition |
Range |
|
Zinc alloy |
Iron parts |
|
Copper cyanide |
45-65 g/L |
30-40 g/L |
Free Sodium cyanide |
10-18 g/L |
10-15 g/L |
Potassium Hydroxide |
1-3 g/L |
10-20g/L |
L-5 Neochel |
40-60 ml/L |
30-55 ml/L |
L-3 Brightener |
5-7 ml/L |
5-7 ml/L |
L-4 Auxiliary agent |
5 ml/L |
5 ml/L |
Cathode current density |
0.25-3A/dm2 |
1.5 A/dm2 |
Anode current density |
0.25-2A/dm2 |
1 A/dm2 |
Temperature |
35-45℃ |
35-45℃ |
Ph Value |
10.5-11.5 |
12 |
Anode |
Purple Copper |
|
3. Make-up for 1L Bath
Material |
Quantity |
Copper cyanide |
50 g |
Sodium cyanide |
75 g |
L-5 Neochel |
50 g |
L-3 brightener |
7 ml |
L-4 auxiliary agent |
5 ml |
4. Operation to Start-up The Bath
1. Put deionized water to 1/3 of the tank.
2. Add required sodium cyanide, stir to dissolve completely;
3. Add the required copper cyanide with vigorous stirring to dissolve completely
4. Add L-5 Neochel into the solution and stir to dissolve.
5. Add water to required standard volume;
6. Add activated carbon 1-2g/L into bath, stirring vigorous for 1 hours, after 4 hours stay still and do filtration.
7. Add L3 Brightener and L4 Auxiliary.
8. Heating to 40°C， and trial plating can be proceed.
9. Make-up process finished.
For more details, welcome to contact us any time.
