| 摘要 |
This method press-molds a final molded article that is provided with a top plate section, a vertical wall section, and a flange section, and that has at least one curved section in the lengthwise direction thereof. The press-molding method has: a first molding step that, when forming the top plate section, the vertical wall section, the curved section, and the flange section, in a plane perpendicular to a high-strength steel plate and containing a horizontal line linking the center of the curve of the curved section and the intersection section of the flange section and the vertical wall section, the flange section is worked in a bending manner at the intersection section until the angle of the flange section with respect to the horizontal line becomes α1; and a second molding step that additionally bends/works the flange section at the intersection section after the first molding step until the angle of the flange section with respect to the horizontal line in the plane becomes α2. The additional bending angle β, which is α1 - α2, is caused to be in a predetermined range, reducing warping and torsion of the final molded article. |
