Alkaline Copper Plating Chemicals for Button, Zipper, Lighting low cost and easy operate. cyanide type
Alkaline Cyanide Copper Plating Chemicals for button, zipper, buckle
1. Features
1.Bright and smooth coating, the crystallization of dense, small gap;
2. Wide range of current density, excellent coverage;
3. Impurities in high-tolerance, easy to control;
4.Selected to use in basic parts of different material, especially for zinc alloy die castings;
5. You can use Sodium salt to make up plating solution, low-cost.
Widely applied in the base copper plating, for garment accessories like zipper, button, buckle
2. The component of the plating solution
Materials | Make-up volume | |
Zinc alloy | Iron parts | |
Cuprous cyanide | 45-65g/L | 35-50g/L |
Sodium cyanide | 66-93g/L | 52-70g/L |
Sodium hydroxide | 1-3g/L | 10-20g/L |
Neochel | 30-50ml/L | 30-50ml/L |
CuppA3# L-3 brightener | 5-7mlL | 5-7ml/L |
CuppA3# L-4 auxiliary agent | 5ml/L | 5ml/L |
3. Work Conditions
Operating parameters | Standard volume | |
Zinc alloy | Iron parts | |
Copper metal | 32-46g/L | 35-50g/L |
Free sodium cyanide | 17-22g/L | 13-20g/L |
Sodium hydroxide | 1-3g/L | 10-20g/L |
temperature | 50-65°C | 45-55°C |
Current density | 2-5 AMP/DM2 | 2 AMP/DM2 |
agitate | Air agitate and cathode swing | Air agitate and cathode swing |
anode | Pure copper | Pure copper |
Anode bag | necessary | necessary |
filtering | Continuous filtering | Continuous filtering |
4. Solution Preparation:
1. Fill the clean tank with 2/3 full of deionised water and then heat to about 50°C;
2. Add required quantity of the potassium/sodium hydroxide; stir to get it dissolve completely. Add required Neochel or sodium cyanide, stir further to get it dissolve completely.
3. Add the required cuprous cyanidewith vigorous stirring to get it dissolve completely;
4. Add 4-6g/L activated carbon, stir the solution continuously for about two hours and then let it stay for above four hours or a whole night.
5. Filter the plating solution into a clean plating tank with a filtering pump;
6. Add the water to required volume;
7. Electrolyze the solution for about 4-8 hours by low current density (0.5 AMP/ DM2) with wave-shaped stainless steel cathode;
8. Add the additives and stir the solution thoroughly, heat it to working temperature and operate the bath.
widely applied in plating industries, for the base copper layer, with good quality and easy operation.
Alkaline Copper Cyanide Plating Chemicals for Button, Zipper, Lighting
