FIELD: soldering or unsoldering; welding.
SUBSTANCE: invention relates to a welded joint and a method for production thereof. Welded joint is obtained by laser welding. Superimposed steel sheets are welded with the formation of welded rollers in the form of a set of rings. Following steps are performed: plurality of metal sheets is laid on each other and the first weld bead is formed, and an additional two or more weld beads are formed on the outside of the first weld bead by irradiation with a laser. Surface hardness of the welded roller increases in the direction from the inner roller to the outer roller, which has excellent strength, which prevents the occurrence of cracks in the welded roller.
EFFECT: welded joint contains exactly the number of welded rollers that is required to ensure the strength of this joint.
7 cl, 5 dwg, 19 tbl, 1 ex
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