Acid Potassium Chloride Zinc Electroplating Softener
Softener Solubilizing main brightener, auxiliary brightening effect, increase the coating thickness in low area, improve the depth capacity of the bath, reduce the surface tension of the bath, on the cathode surface wetting effect. The content in the bath is 25ml/L - 30ml/L The coating brittleness increases and passivation quality is affected by high content. The content is too low, the bright effect is not good, the coating is easy to flower, stay in the air and change color quickly.
Description
Acid potassium chloride zinc electroplating softener
Packing specifications: 25kg/plastic drum
200kg/plastic drum
1000kg/plastic drum on metal pallet
Payment: T/T or L/C
Delivery Port: Tianjin or Qingdao
Test Institution: SGS or CCIC
Capacity: 1000 MT per month
Period of Validity: 7 days
USE: 1. Metal surface treatment electro-galvanized
2. Galvanized standard parts, such as screw, nuts, and bolts
3. Metal accessories and metal fittings need to be galvanized
4. Electric galvanizing parts color has silver white, blue white, and color
Common failures and processing method
|
Problem Description |
Probable cause |
Solutions |
|
Poor brightness |
Lack of brightener Lack of softener Organic impurity pollution |
Brightener supplement Softener supplement Activated carbon filtration |
|
Poor coverage No coating in hole and concave
|
Lack of brightener Lack of softener Low potassium chloride The bath temperature becomes higher Aluminum impurity pollution |
Brightener supplement Softener supplement Potassium chloride supplement Lowering temperature Treat with zinc powder |
|
The bright range is narrow and the coating is easy to burn
|
The PH value of the bath increases Lack of zinc Lack of boric acid Lack of softener |
Adjust PH value with dilute hydrochloric acid Zinc chloride supplement Boric acid supplement Softener supplement |
|
The coating has white mist
|
Effect of organic impurities Poor cleaning after plating |
Activated carbon filtration Change the cleaning water |
|
The coating blackening after acid dipping |
Iron impurity Copper impurity |
Hydrogen peroxide treatment and filtration Treat with zinc powder |
|
Roller holes appear in the coating
|
Lack of softener Iron impurity Excessive current Lower zinc Over loading of work
|
Softener supplement Hydrogen peroxide treatment and filtration Lower total current Zinc chloride supplement Reduced loading |
The coating has high brightness, low brittleness, turbidity point of the bath can reach more than 80℃, and bright coating can be plated at 65℃. Its comprehensive performance can be completely comparable with similar foreign products, characteristics are as follows:
1. The bath does not contain ammonium, the wastewater is not polluted and easy to treat.
2. The coating is bright, suitable for low chromium passivation.
3. Adaptable to all kinds of basic materials, such as carbon steel, penetrant steel, cast iron, zinc pressure casting parts can be plated with bright zinc layer.
4. Coating brittleness is small, suitable for thicker zinc plating layer.
5. Additive consumption is low, plating solution maintenance is easy, conducive to reducing production costs.
6. The bath foam is low, both barrel and rack plating can be used.
7. Bath temperature range is wide.
Bath formula and technological parameters
|
|
concentration range |
Standard concentration |
|
KCl |
200-230 g/L |
220g/L |
|
ZnCl |
60-100 g/L |
60g/L (barrel) |
|
Boric Acid |
30-40 g/L |
35 g/L |
|
HL-93 Softening Agent |
20-30 g/L |
25 g/L |
|
HL-93 Brightening Agent |
0.6 ml/L- 1.0 ml/L |
0.8ml/L |
|
Temperature (℃) |
10-55℃ |
40℃ |
|
PH value |
4.8-5.6 |
5.2 |
|
DK (A/dm2) |
0.1-5 |
3 |
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