Arc electrode
AssigneeAGA Aktiebolag
InventorsJan O. Johansson, Jan-Erik Andersson, Tomasz Niklewski, Lars E. Edshammar
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Abstract
An electrode for electric arc processes composed of a water-cooled holder (1) into which is fitted a case hardened of diffusion coated insert of zirconium or hafnium. The diffusion zone (5) consists of carbide, nitride, boride or silicide, compounds with very high melting points that will supress reactions between the holder and the insert that cause deterioration of the electrode.
Claims7
An electrode for plasma arc working in active or inert media comprising a holder of high thermal and electrical conductivity into which is fitted a diffusion coated or case hardened zirconium or hafnium insert to provide a diffusion zone of high temperature compounds between said holder and said insert.
Dependencies are inferred from the claim text.