Black nickel salt matters needing attention and maintenance

Black nickel salt matters needing attention and maintenance

1. The current density of black nickel plating is very low, and the addition of black nickel salt is mainly due to the loss of lead.Determine the specific gravity of the bath regularly and add black nickel salt in time to maintain the stability of the bath.To increase the specific gravity of 1beo, 12 g/l black nickel salt should be added.

2: black nickel adjustment salt contains a high concentration of blackening agent, to get a bright dark black, you can add black nickel adjustment salt 3-5 g/l each time, excessive addition may cause the low area to appear a transition color (blue, yellow or brown), slightly excessive, can be taken out of part of the plating solution, add water dilution, at the same time add black nickel step salt 5-15 g/l.

3: to get an elegant light black, it is advisable to stop adding black nickel salt instead of black nickel salt.

4: when the production is stopped for a long time, there may be crystals precipitates and sink at the bottom of the tank. Before the plating tank is used again, it is advisable to heat it until it is completely dissolved, clean the activated anode and scrub the end point of the anode rod.

5: black nickel salt is easy to contact with the air (weathering), the color gradually deepened, brown-green, but does not affect the quality of the product.