Stable Solution Electroplating Chemicals SN-2 Acid Tin Plating Brightener
Product Details
Brightener For SN-2 Acid Tin Plating
1. Features
1. As stable process and excellent leveling ability, it can produce bright, good weldability plating.
2. It can produce tin plating even at low concentration of tin metal because of a wide range of bath concentration of plating operation.
3. Good dispersion ability, high current efficiency, suitable for roll plating and hanging plating, with fine and bright coating crystals and a wide range of brightness.
4. It is very stable in the plating solution, and the consumption is calculated by adding in ampere hours.
2. Process specification conditions
|
Composition and conditions |
Optimal condition |
Range of technology |
|
Stannous sulfate |
25g/L |
20~30g/L |
|
Sulfuric acid(CP) |
140g/L |
120~180g/L |
|
SN-2 make-up |
20ml/L |
18~25ml/L |
|
SN-2 brightener |
1ml/L |
0.5~2ml/L |
| Temperature | 18°C | 18~25°C |
|
Cathode move |
20 times/min |
15~25 times/min |
|
The average cathode current density |
1A/dm2 |
0.5~3.0A/dm2 |
|
Voltage |
6V |
|
|
Cooling Tube |
(Polyvinyl fluoride) or copper tube with Teflon outer |
|
|
Filter |
PP filter continuous filtration |
|
|
Anode |
99.99% Tin plate |
|
|
Rack plating |
Titanium, PVC cladding |
|
|
Anode bags |
Usually no need |
|
|
Plating bath |
Steel with lining of PE, PP, PVC plastic or acid resistant fiberglass. |
|
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