copper plating line——tank system
copper plating line——pay-off and take-up machines
copper plating is a crucial procedure for producing solid welding wires. the surface of the semi-finished wires after drawing is washed out of lubricant and dirt through degreasing, hot water rinsing, electrolytic alkali and pickling as well as water rinsing and then gains copper plating by chemical methods. after further hot water rinsing, drying and skin-passing, the solid welding wires will be finished. good plating can raise the electric conductivity of the welding wires besides protecting the wire surface.
the reciprocal wire copper plating line (the wire passing reciprocally in the tank) has a high plating speed and occupies a small space. but being complex in structure, the reciprocal line is always single wire or two wires and therefore suitable for small-scale production.
the expanded straight type copper plating line (the wire passing straightly through the tank) is often designed for multi-wires. the length of tanks ensures that there is enough time for cleaning and copper plating. the stability of the copper plating quality is thus well guaranteed.
the inlet wire diameter isφ0.8—φ1.6, the outlet wire diameter isφ2.0—φ5.0, the wire speed is 3m/s.