Chemical composite plating process
2022-01-25
Just as composite electroplating mostly uses electroplating nickel as the carrier, chemical composite plating also uses electroless nickel plating as the carrier. This is because the stability of electroless nickel plating is better, the mechanical properties of the coating are also better, and a thicker coating with more consistent performance can be obtained.
The composition of the base liquid for electroless nickel plating used as an electroless composite plating layer is as follows.
In this base solution, various functional particles are dispersed by air stirring to obtain chemical composite plating. Commonly used particles and dosages are as follows.
There are also some other particles such as sulfides, carbides, oxides, etc. that can be tried, and the dosage can also be determined through experiments according to the designed content in the coating. Of course you can also add
Some additives to improve the performance of the coating.
The particle size and relative density of the selected particles are as follows.
The consumption of chemical plating solution is calculated according to the load of 0.6dm2 per liter, and it is updated once every 3 hours. The above examples are wear-resistant chemical composite coatings. Other processes such as friction-reducing electroless plating or other functional electroless plating have been developed.
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