Electrode for use in plasma arc working torch.

摘要

An electrode for use in a plasma arc working torch having an insert (3) of refractory metal inserted in a hollow (201) formed in a base electrode (2) is disclosed wherein the insert has a nickel film (41) electroplated and a noble metal film (42) plated thereon and is pressed (51-54) into position. It is also disclosed that a metal (21) having a low melting point is filled in a space defined by the hollow of the base electrode (2) and the end face of the insert (3). <IMAGE>