The acid copper-based process with electrolytic thickness has the purpose of creating deposits of considerable thickness of copper in order to level out and improve the surfaces of the various parts with a considerable aesthetic quality increase.
Thicknesses from 3 to 100 microns can be made according to your need.
The copper plating is applied exclusively by electroplating, operating in electrolytic baths in which the object to be coppered acts as a cathode, while the anode is made of pure copper cathodes. In acid baths, the electrolyte is made up of a concentrated solution of sulfate of copper with sulfuric acid added to increase its electrical conductivity and improve the etching of the anodes.
The acid copper baths allow to obtain notable and compact thicknesses, but they have the drawback of not being usable for the direct ramming of iron objects because these, immersed in the copper sulphate solution, give rise to the so-called cementation phenomenon. As a consequence, the thicknesses of a certain thickness must be applied on the iron objects in two stages, first in an alkaline bath and then subjecting the object, whose surface is now protected against cementation by a thin layer of copper, to a subsequent branching in acid bath.
The copper plating is used both as a protection against atmospheric corrosion and to improve the adhesion and the protective value of a subsequently applied nickel plating.
Frequently copper plating is also used in electronics and in industrial electrotechnics for the production of printed circuits and for the covering of steel wires.
The electroplated acid copper layer is not uniform in its distribution, in particular there will be areas such as the edges or points where there will be a very marked deposition, while in the holes and in the undercut the deposition will be much lower. It still has an excellent penetration.
We can coat the following materials after appropriate preparation treatments:
- Aluminum and its alloys after special preparation
- Carbon steels also heat treated
- Stainless steels
- Cast iron after sandblasting
- Copper and its alloys
The maximum dimensions of the parts that we can work are 1600x1100x300.