FIELD: transport; machine building.
SUBSTANCE: group of inventions relates to the field of transport machine building. Said stretched article for structural element of vehicle comprises section of top plate, convex sections of rib line, side walls, end wall, angular walls, concave section of rib line and flange adjacent to concave section of rib line. Method of making said article for a structural element includes steps of stamping a workpiece having a tensile strength of 980 MPa or more. First intermediate molded by product drawing is performed by drawing. Pressure is applied to the intermediate end wall of the second intermediate molded article drawing in the first direction by means of a pressing tool. Device for making said article for structural element comprises forming dies and pressing tool.
EFFECT: higher rigidity of structural element of vehicle.
14 cl, 23 dwg
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|
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