Copper-coated solid wire electrode
A solid wire electrode coated with a thin copper layer to improve contact resistance and corrosion protection.
Physico-chemical mechanism of action
The copper coating forms a thin layer on the electrode that improves the contact between the wire and the electrolyte. Copper is a good conductor and thus prevents electrical losses. In addition, copper and some metals corrode faster than the solid wire electrode itself, which extends the life of the electrode.
Metallurgical relevance & risks during welding
An insufficient or missing copper layer can lead to poor contacts and faster corrosion. This can lead to electrolyte losses and shorter electrode life, which affects productivity in wire feeding.
Workshop practice & instructions
Make sure the copper coating is defect-free and thin. Check the integrity of the coating regularly and replace the electrode if there are signs of corrosion or weak contact.