| 摘要 |
The invention relates to the mechanical treatment by pressure of sheet material. A bent profile of special-purpose rolled products contains elements of profile connected by inflection points, on which longitudinal corrugations are executed. The profile is executed with a thickness of 1.0-2.0 mm, the corrugations are located at least on different sides from each inflection point in the sections of the adjacent elements of profile adjacent to it. In this case, the corrugations are directed by convexity inside the profile and are executed with a height, which makes 1.5-3.0 of the profile thicknesses, and the distance in the cross section of profile from the apex of angle of curvature between adjacent elements of profile to the axis of symmetry of each adjacent with this inflection point corrugation makes 3.0-8.0 of profile thicknesses. The invention ensures the reduction of the metal content of the bent special profile and simplification of the manufacture guaranteeing the assigned hardness of the profile.
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