METHOD OF ELECTRON-BEAM WELDING OF A PLATE WITH FINNED SURFACE Russian patent published in 2017 - IPC B23K15/00 B23K31/02 B23K33/00 B23P15/02 B23P15/04 

FIELD: metallurgy.

SUBSTANCE: welding is carried out from the side of plate. Preliminary places of welding are applied on the outer surface of plate, coinciding with the places of welding on the finned surface. In welding places single-stage through-holes are made with decreasing diameter in the depth of plate. Welded parts are combined. Pins are set in holes made in plate before contact with the fin. The height of pin exceeds the depth of inner hole in plate. After that, spot welding is carried out in the places where pins are installed. The height of pin protrusion into the outer hole is at least half of its depth. Plate and finned surface can be made of thin-sheeted titanium alloy.

EFFECT: minimum values of post-welding deformations, high accuracy of assembly of welded parts, excluding their mutual displacement, and possibility of obtaining quality welded joints in different spatial positions.

3 cl, 1 dwg, 1 ex