When we use nickel sulfamate additives in the production process, a certain amount of internal stress is generated when the crystallization of the plated layer is changed. When the internal stress of the plating layer is large, the hardness of the plating layer is large, easy to peel, crack, and poor ductility. So, what are the factors that affect the internal stress of the plating layer?
The failure of yellowing after plating in the barrel nickel plating process in electroplating plant will undoubtedly increase the difficulty of delivery, whether it is the delay of production schedule or the waste of raw materials, it is a loss. So in addition to the yellowing of the water imprint and the yellowing of the pinhole, what other reasons can cause yellowing after plating?
Yellowing of zinc-nickel alloy plating in the low current region is usually related to process parameters, bath composition and operating conditions. The following are a few possible causes of yellowing in the low current region:
Wetting agents play an important role in the bright sulfate copper plating process , mainly used to reduce the surface tension, so as to improve the contact between the bath solution and the surface of the object to be plated, to enhance the fluidity of the solution and to prevent the adhesion of air bubbles on the surface of the workpiece. Failure to add a wetting agent to the bright sulfate copper plating bath can lead to a variety of plating failures.
The interaction of the different components in the potassium chloride galvanizing system is complex. The fact that the plating is not bright instead of bright after the addition of a potassium chloride galvanizing brightener may be due to a number of factors, and here are some possible explanations: