Acid Potassium Chloride Zinc Electroplating Brightener
Acid potassium chloride zinc electroplating brightener 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
Description
Process of hydrogen removal:
190-230 ℃
More than 3 hours
Carburizing and tin welding parts temperature 140℃-160℃
Hydrogen removal should be carried out immediately after plating, and the parts should be scrapped after more than 4 hours.
Other steel parts must be dehydrogenated within 4 hours after electroplating.
Spring parts, thin-wall parts (wall thickness less than 0.5mm), high-strength steel parts, must be dehydrogenated.
Copper and copper alloy parts can be free of hydrogen removal.
For parts that cannot be heated too high, a lower temperature (140℃-160℃) can be used to extend the time of hydrogen removal.
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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