DISSIMILAR MATERIALS BONDING WITH ELECTRONIC BEAM TECHNIQUE Russian patent published in 2017 - IPC B23K9/23 B23K33/00 B23K15/00 

FIELD: electricity.

SUBSTANCE: grooves (3) are made in the detail, which is made of the low-melting material. The protrusion (4) is made in the detail, which is made of the heat-resistant material, to match with the groove. The ruled welding surfaces are obtained in the joint zone. The groove (3) and the protrusion (4) are fused together when assembling the joint zone, providing the hard contact in between. The scarf butt joint with the variable clearance between the ruled welding surfaces in the shape of the toe-in angle is formed. The brazing is carried out with the electronic beam (5). The beam (5) is moved in reference to the edge towards the low-melting detail (1) over a fixed distance. The low-melting detail (1) is melted and the permanent joint is formed after the crystallization. The cylinder details that are made of the dissimilar materials are connected to each other with the ring seam. The plain details that are made of the dissimilar materials are connected to each other with the longitudinal seam.

EFFECT: welding stress and deformations reduction, expulsion from the weld area of the intermetallic phases, which enhances the strength and the tightness of the details permanent joint.

8 cl, 4 dwg, 1 tbl