FIELD: process engineering.
SUBSTANCE: invention relates to method of jointing two or more parts by cold butt joint and laser welding and can be used in machine building. Prior to laser welding, parts (1, 2) are locked relative to each other on at least one of superimposed flat sections (1a, 2a) by cold butt joint. Then said parts are welded together by laser. Laser welding seam (4) is arranged nearby locking area (3) formed by cold butt joint. Laser welding seams (4) are made by straight and parallel beams nearby said butt joint area (3). Said seams (4) are oriented along direction of maximum stress.
EFFECT: gapless contact of parts, minimum warpage caused by welding.
8 cl, 3 dwg
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