FIELD: processes for laser thermal treatment of thin-sheet metallic materials, metal alloys, hardened high-strength steels with different thermal-physical properties, possibly in machine engineering, aircraft- and ship manufacture.
SUBSTANCE: method comprises steps of acting by means of laser beam and at least by means of one light beam upon treated zone; controlling rate of temperature change of said zone due to interrelated movement of spots of laser beam and at least of one light beam along line of thermal treatment; providing elliptical shape of spots of laser beam and light beam at relation of sizes of lengthwise and crosswise axes of ellipses of spot of laser beam equal to 2 : 1 and density of irradiation in spot 105 - 107 Wt/cm2.
EFFECT: possibility for providing high-quality welded joint by means of laser-light thermal treatment.
13 cl, 5 dwg
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