Abrégé

The invention relates to an electron beam welding device (1) comprising: - a cathode (2) comprising an emitting surface (9) that emits electrons; - an anode (3) having an anode hole (4), wherein a positive voltage is applied to the anode relative to the cathode so as to create an electron beam (5) from the cathode towards the anode; - a beamforming electrode (6) comprising a flared surface arranged so as to focus the electron beam emitted between the cathode and the anode, characterised in that a portion (8) of the flared surface of the beamforming electrode (6) extends behind the emitting surface (9) of the cathode in the direction of emission of the electron beam.

Classes IPC  ?

• H01J 37/063 - Disposition géométrique des électrodes pour la formation du faisceau
• B23K 15/00 - Soudage ou découpage par faisceau d'électrons
• H01J 37/065 - Montage des canons ou de leurs éléments constitutifs
• H01J 37/315 - Tubes à faisceau électronique ou ionique destinés aux traitements localisés d'objets pour souder