FIELD: technological processes.
SUBSTANCE: profile includes base, horizontal and lateral shelves of given size. Lateral profile shelves of given thickness feature vertical slits of defined width at defined distance from each other. Method involves preliminary perforation of edge areas of strip blank to form slits of given size, and further blank element overcast in rollers of profile bending mill to form final cross-section. Slits are made at definite tilt against lengthwise axis of blanks. After profile forming, obtained lateral shelves are rolled out in die clenching horizontal shelves by puncheon contacting profile base to reach vertical position of slits in lateral shelves.
EFFECT: reduced metal consumption of articles and constructions without adverse effect on durability characteristics.
6 cl, 2 dwg, 1 ex
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