METHOD OF ALUMINIUM ALLOY BUTT WELD LASER-ARC WELDING BY CONSUMABLE ELECTRODE Russian patent published in 2016 - IPC B23K26/348 B23K26/40 

FIELD: metallurgy.

SUBSTANCE: parts are welded at laser beam and arc effects in one molten pool in the medium of inert gas. Laser beam and arc torch are inclined in opposite directions relative to perpendicular to the surface of parts being welded. Laser beam is focused above the surface of said parts, its spot diameter equal to (0.4-0.6) mm ahead the arc discharge point at preset distance therefrom at the threshold power density required for the welding process start while, in the run, said laser beam is inclined forward through 8-9 degrees. Arc torch is located behind the laser beam at the angle of 40-50 degrees. The distance between the laser radiation spot centre and arc discharge point is kept equal to (0.1-0.2) of the electrode diameter.

EFFECT: weld of stable depth with the characteristics approximating to 1, no pores, minimum power input, higher welding rate.

2 cl, 1 dwg, 1 ex