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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 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

Description

Additives play an important role in plating solution. In general, additives are added according to KA.h consumption. If the proportion is out of proportion, add it according to the bath volume after adjusting by hull bath experiment.

Without additive plating solution, the coating is gray and rough, and the range of cathode current density is very small.

After adding appropriate amount of additives, the coating can be fine and bright, the current density is expanded, the dispersion ability and covering ability are improved, too high additives will cause brittleness of the coating, passivation film fall off and color change.

The general total amount should be controlled within the range of 25-30ml/L.

 

 

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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