Acid Potassium Chloride Zinc Electroplating Brightener

Boric Acid H3BO3

The main function of boric acid H3BO3 is to inhibit the increase of PH value of the bath, so that the bath PH value remains relatively stable, and the coating can be uniform and bright. When boric acid content is insufficient, the range of cathode current density will be reduced, the current is not open, the coating is easy to burn, resulting in rough gray coating and loss of light. In order to stabilize PH value of bath, it is necessary to maintain proper boric acid content. But the boric acid content should not be too high, if the content is too high, the coating will blossom, so at the general temperature, more than 45g/L will crystallize and precipitate. So the appropriate boric acid content is 30-40g/L, winter to take 30g/L is appropriate, summer boric acid content can be increased to 35-40g/L.

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.

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