FIELD: welding jobs.
SUBSTANCE: invention relates to the method of continuous butt-welding with plasma and laser, and method of producing pipes by proposed welding method and can be used in machine building. The proposed method comprises a continuous feed of workpiece 0.1 to 0.2 mm-thick parts to be welded together, that face each other. It includes preheating of welded parts by plasmatron and irradiating them, thereafter, by laser for them to be welded together. Method of producing metal pipe comprises a continuous feed of a sheet metal band and processing the sheet workpiece to produce a round-section product. The said processing comprises preheating the seam by plasmatron and welding by laser.
EFFECT: proposed method accelerate welding rate and increase welding efficiency.
16 cl, 9 dwg
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