Acid Potassium Chloride Zinc Electroplating Softener

Electroplating is in the electrolyte containing some metal ions, will be plated workpiece as the cathode, through a certain waveform of low-voltage direct current, so that metal ions get electrons, constantly deposited in the cathode for metal processing process. So as to prevent corrosion, improve wear resistance, electrical conductivity, reflective and improve the appearance of the role.

 

Potassium chloride type weakly acidic galvanizing electrolyte is a kind of cyanide-free galvanizing process developed rapidly in recent years, which is referred to as potassium salt galvanizing.

 

It is characterized by simple electrolyte composition, stable electrolyte, fine coating, bright, high current efficiency, wide operating temperature range (5 ~ 60℃), simple wastewater treatment. The chemical dissolution of the anode in the electrolytic cell leads to the increase of the concentration of main salt ions in the electrolyte.

 

Our main products are chemical additives, which used in manufacture zinc electroplating bath, for improve the brightness of galvanized layer on metal surface.

 

Acid potassium chloride zinc plating brightener, which used in manufacture zinc electroplating bath, for improve the brightness of galvanized layer on metal surface.

 

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.

 

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.

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: 5000 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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