Electrode for arch-plasma torch, comprises a hollow electrode body with one-eyed disc-shaped bottom comprising a cylindrical central structure projecting towards an inner side of electrode body

摘要

The electrode (1) for arch-plasma torch, comprises a hollow electrode body with one-eyed disc-shaped bottom (3) comprising a cylindrical central structure (4) projecting towards an inner side of electrode body. The central structure forms a housing for receiving an emissive insert (2). Intersection between the electrode bottom and side wall of the central structure presents a first radius of curvature (0.1-1 mm) and/or intersection between the side wall and a top of the structure presents a second radius of curvature (0.1-1 mm). The electrode (1) for arch-plasma torch, comprises a hollow electrode body with one-eyed disc-shaped bottom (3) comprising a cylindrical central structure (4) projecting towards an inner side of electrode body. The central structure forms a housing for receiving an emissive insert (2). Intersection between the electrode bottom and side wall of the central structure presents a first radius of curvature (0.1-1 mm) and/or intersection between the side wall and a top of the structure presents a second radius of curvature (0.1-1 mm). The structure constitutes a surface of an internal part (5) of the electrode body. The insert is inserted in the housing of the central structure. The top of the structure has conical or tapered shape.