A WELDING WIRE

摘要

PURPOSE: A welding wire is provided to increase welding speed by comprising a conductive layer for easy transmission of electricity to a core layer. CONSTITUTION: A welding wire comprises a core layer(10), an ionized electric potential layer(30), and a conductive layer. The core layer is molten into globules with the arc heat of welding. The ionized electric potential layer is formed out of elements having low ionization energy on the surface of the core layer. The conductive layer is formed between the core layer and the ionized electric potential layer or on the surface of the ionized electric potential layer in order to transmit the electricity flowing in a wire to the core layer.