METHOD FOR LASER AND LIGHT THERMAL TREATMENT OF METALLIC MATERIALS AT CONTROLLED TEMPERATURE CHANGE

摘要

FIELD: processes for laser thermal treatment of thin-sheet metallic materials, alloys, quenching high-strength steels with different thermal-physical properties, possibly used in machine engineering, aircraft manufacture, ship making. ^ SUBSTANCE: method comprises steps of acting upon treated zone by laser beam and at least by one light beam; controlling rate of temperature change of said zone due to motion of laser beam spot and at least of one light beam spot along thermal treatment line; providing elliptic shape of spots of light beam and laser beam at relation of sizes of lengthwise and crosswise axes of ellipse of spot of laser beam 2 : 1 and power density of irradiation in spot in range 10 5 - 107 Wt/cm. ^ EFFECT: possibility for receiving high-quality welded joint by laser and light thermal treatment method. ^ 16 cl, 5 dwg