FIELD: mechanical engineering. SUBSTANCE: after volumetric heat treatment of punch and die their working edges are strengthened by continuous laser radiation. Laser strips are applied in the direction away from punch center or die periphery towards cutting edges, square to their contour at a pitch S = 0.8-0.5d where d = diameter of laser beam spot on workpiece surface. Final operation is finishing fused edges. EFFECT: higher efficiency. 2 cl, 4 dwg, 1 tbl
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