A method for electron beam welding under a local vacuum

摘要

The machine has a device (4,14,15) for creating a partial vacuum in an enclosure (4), and welding unit (3) including at least an electron gun designed to generate an electron beam The electron gun (3) is carried on a movable support (5) which permits displacement of the gun (3) along at least two different axes. The partially evacuated enclosure (4) is surrounded by at least a part of the electron gun (3) and both are supported by a chassis (6). This chassis (6) has at least a guide which guides the displacement of the electron gun (3). The partial vacuum generating system (4, 14,15) creates a local partial vacuum on both sides of the zone to be welded.