Copper plating line

Copper plating line products

Copper plating line process:

Electroless copper plating line is a process for printed circuit board manufacturing, often called sink-copper or PTH, which is a self-catalytic redox reactions. First treatment with activator agent, adsorbed on insulating substrate layer surface of active particles usually as metal palladium particles (palladium is a very expensive metal, the price is high and has been rising, to reduce cost now practical colloidal copper process is in the application), copper ions are first reduced on these active palladium metal particle, which these reduced metal copper nuclei itself has become a copper ion catalyst layer, so that copper reduction proceed on these new copper nuclei surfaces.

Electroless copper plating: traditional copper plating mostly as vertical lines, process are similar, the general process is:
Cleaning → Neutralization → Degreasing → Microetching → Pre-ditching → Activation → Chemical copper plating.

The main components are cathode and anode in copper plating line:

Cathode: giving rise to the starting & end a couple of stainless steel rod having a pair of electrical contact ring, copper brush is pressed against the copper ring in order to get good contact, connected to the negative pole of rectifiers. By retaining roller, the cathode cut off contact with plating solution.
Copper plating line anode: 2 titanium plate installed in plating bath, these two anode pieces connect with positive rectifies pole by electricity cable directly. Anode soaked in chemical plating solution.

Chemical copper plating line principle:

Electroless copper plating on the surface of the catalytic activity by the action of a reducing agent to precipitate the copper ions reduced:
Reduction (cathode) reactions: CuL2 + + 2e- → Cu + L
Oxide (anode) reaction: R → O + 2e-
Thus, with hypophosphite as a reducing agent for chemical copper plating main reaction is: 2H2PO2- + Cu2 + + 2OH- → Cu + 2H2PO3 + H2 ↑
In addition to the establishment of the thermodynamics, chemical reactions must also meet dynamics conditions. Like other chemical copper as the catalytic reaction thermal energy is required to cause a reaction, which is why only when the chemical bath plating deposition get speed plating under certain temperature. Theoretically copper plating speed to express by increasing the concentration of the reaction product of reactant concentrations and reduce the speed. In actual use, the electroless copper plating solution containing certain additives, its have too many factors to effect, the situation becomes too complicated. Thus, most of the electroless copper plating dynamics research is limited to the most basic component of the bath at the start.

And copper plating line rectifiers normally as following specification:

Rectifiers for Copper Plating Line

Rectifiers for Copper Plating Line

1 reply
  1. mohsen ghanbari
    mohsen ghanbari says:

    Dear Sir/Madam
    We would appreciate of you for consideration and response.
    We would like have a production line earthing rod with plating method.
    We need a copper electroplating line for making100x1.5 earthing rod per day
    Steel Rod materials: CK45
    Steel Rod Diameters: Φ 14-22mm
    Steel Rod Length: 1.5 meter
    Copper plating: max. 300 microns
    Capacity for every day: 100 earthing rod per day.
    Surface quality is very important.
    Cohesion copper on steel rod and softness is very important.
    Cost of production is very important.
    How much consumption Chemical solution, Acidic solution, copper, …we need for plating 100 rod per day. (list of materials with price).
    What electrical power required for whole line? (add to list)
    Please optimized rectifier powers minimum.
    Did you run this line previously?
    Can we visit this line in your customer’s factory on china?
    We need your engineer coming to Iran for implementation and training. please add this items to price list.
    Did you run this line previously?
    Can you send earthing rod samples for me?
    Would you please help and send to me whole line price list & Performa & catalogue & etc.

    Best regards
    Mohsen Ghanbari

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