When we use electroless nickel plating solution, in theory, the workpiece as long as immersed in the plating solution at any position can obtain uniform coating.In the production process, the workpiece in the hole, slot, slot and other positions can not get good coating, mostly to deep hole, blind hole or through hole.
According to the field experience and the characteristics of the product electroless nickel plating solution Ni-809, Bigolly Technology has made an analysis, and the deep plating ability is poor mainly for the following three reasons:
1. Poor pre-processing of the workpiece.Due to the deep hole, blind hole or through hole position of the workpiece in the pre-treatment, there will be oil removal in place or cleaning is not clean, affecting the normal deposition of the workpiece nickel layer.Bigolly advises customers to add an ultrasonic cleaning process to the pre-treatment process to ensure that the workpiece is cleaned of oil and impurities in the deep hole, blind hole or through hole.
2. the workpiece hanging way is wrong.There are deep holes, blind holes or through holes of the workpiece, if the hole is down when the production, the bath in the hole can not be replaced in a timely manner, the reaction of the gas can not be discharged in a timely manner, so that the coating in the hole will be very thin, even leakage plating.Therefore, in the deposition of chemical nickel should be the workpiece hole position up, so that the hole deposition of chemical nickel layer when the plating bath can be alternating, reaction gas can be discharged in time, to ensure the normal deposition of chemical nickel layer.
3. Improper control of bath parameters.In the process of production, low nickel concentration, low temperature or low pH value in the plating solution will affect the deep plating ability of the workpiece.Therefore, the process parameters of the bath should be strictly controlled in the process range.
Therefore, the workpiece in the use of electroless nickel plating solution deep plating ability poor should pay attention to the above 3 points, timely troubleshooting causes, to ensure that the workpiece has a good deep plating ability.If you are interested in electroless nickel plating solution, please contact Bigolly customer service, can obtain free samples and detailed technical information!
If you want to learn more about electroless nickel plating,you can click to view "Common problem".