METHOD FOR ELECTRON-BEAM WELDING Russian patent published in 2011 - IPC B23K15/00 B23K28/02 

FIELD: technological processes.

SUBSTANCE: invention relates to the method of electron-beam welding and is designed to produce non-detachable welded joints. The method includes generation of an electronic beam (3), its deflection and displacement relative to the gun axis, arrangement of the beam focus inside a welded part (1) and maintenance of the beam (3) focus position along the thickness of the welded joint as permanent. Deflection and displacement of the electronic beam (3) from the gun axis is carried out with alternating magnetic field. The field is developed with supply of AC current to the lower portion of the welded part via current contact jaws (4), which are arranged at two sides symmetrically to the joint at the distance between them, equal to the width of the welding joint in the upper portion of the welded part. The magnetic field is displaced in direction of welding with the speed equal to the speed of electronic beam. The value of the alternating current supplied via current contact jaws (4) is selected provided that the width of the joint in the root zone is equal to the width of the joint in the upper part of the welded joint.

EFFECT: method makes it possible to increase quality of the welded joint by improvement of the root part of the joint and elimination of the defect area in the middle part of the joint.

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