Oil removal is an indispensable step in the plating process and is the key to ensuring good adhesion and surface finish of the electroplating. This article will elaborate on the importance of electroplating oil removal, and introduce the basic concepts of electroplating pretreatment.
Blackening of nickel plated workpieces in air is not usually a normal phenomenon, and may be caused by oxidation or sulfidation of the nickel plated surface. Nickel plating usually has good corrosion and oxidation resistance, but under certain circumstances, such as insufficient quality of plating, presence of contaminants in the environment, high humidity, or poor storage conditions, the surface of nickel plated parts may become discolored or blackened.
