Electrode for plasma arc torch and method of making same

Details Electrode for plasma arc torch and method of making same Electrode for plasma arc torch and method of making same

H - Electricity

05

H

H05H 1/34 (2006.01) B23K 10/00 (2006.01)

Patent

CA 2279800

An electrode for a plasma arc torch comprises a copper holder having a lower end which mounts an emissive element serving as the cathode terminal for the arc during operation. A relatively non-emissive separator formed of silver alloyed with 0.5 to 4 percent of copper or other metals surrounds the emissive element and separates the emissive element from the copper holder at the exposed end face of the electrode. The separator serves to prevent the arc from detaching from the emissive element and attaching to the copper holder.

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