In the production process of using barrel nickel brightener, sometimes the iron ions in the plating solution are relatively high, and the brightness of the produced workpiece is relatively poor, which is prone to yellowing and whitening.And a few days after the treatment with hydrogen peroxide, this phenomenon appeared again. What is the reason?
Bigolly Technology made an analysis based on the field experience and the characteristics of the product's barrel nickel brightener Ni-117,When the iron impurity in the plating solution is high, the iron hydroxide will precipitate and be mixed in the plating layer, which is easy to make the plating layer brittle.There are three main reasons for the high concentration of iron ions in the plating solution:
1. The introduction of rust on the surface of the workpiece.In some factories, the barrel plating parts are not pickled as needed, but soaked in clean water after pickling in the early stage, so that there is already floating rust on the surface of the workpiece during electroplating.Although the floating rust will not affect the bonding force of the workpiece, with the rotation of the drum, the floating rust will dissolve into iron ions in the plating solution.
2. The workpiece falls into the plating tank from the door seam.In some production lines, their drums have been used for a long time, and the drums are deformed and cannot be closed tightly.In this way, when small workpieces are produced, the workpieces are likely to fall into the coating from the door seam.
3. Small workpieces or small discs during punching fall into the plating tank from the roller eye.Some small workpieces or small wafers for punching, which are smaller than the eye of the drum, are easy to fall from the eye of the drum into the plating tank when the drum is rotated.
Iron ion is a relatively common metal impurity, and it is also a more difficult impurity to deal with.Therefore, in the production process of using barrel nickel brightener, we should pay attention to these small details, and regularly do electrolytic treatment or hydrogen peroxide treatment of the plating solution to reduce the accumulation of iron ions in the plating solution and reduce the failure rate.If you are interested in barrel nickel brightener,please contact Bigolly customer service to get free samples and detailed technical information!
If you want to know more about nickel plating,you can check "common problem".