How to solve the problems of oxidation discoloration and water stains on workpieces after electroplating nickel and chemical nickel plating layers

Nickel plating is commonly used in industries such as hardware, electronics, and automotive. Nickel plating is a method of depositing a layer of nickel on metals or certain non metals through electrolysis or chemical methods. It can be applied to locally electroplate corroded parts,Electroplated nickel platingIt has high stability, excellent polishing performance, relatively high hardness, and a wide range of applications, and can be used as a protective decorative coating. However, after nickel plating, sometimes there may be problems such as workpiece oxidation discoloration and water stains returning to rust. How can this be solved?

The first reason for the discoloration of the workpiece due to oxidation and the appearance of water stains and rust isNickel plating layerThe phenomenon of a certain porosity between the microstructure lattices can easily attack the nickel layer and the substrate metal below it, reducing the corrosion resistance of the coating. A recommended solution to this problem is to use a nickel surface anti discoloration protective agent, a water-based system, non-toxic and odorless, forming a hydrophobic film layer, quickly dehydrating, leaving no water stains, and the protective film does not change the appearance gloss and weldability. It has an isolation effect, leaving no fingerprints at the touch of the hand, effectively delaying the corrosive liquid's erosion behavior on the workpiece.

Recommended process flow:

Nickel plated parts → washed with water → soaked in protective agent (40-50 ℃) → left idle for about 15 seconds → rinsed with purified water → dried