| 摘要 |
A process for forming an initial section or like component featuring a hollow interior to a final shape by means of high internal pressure in the sealed hollow interior using a medium that can flow is such that, in order to shape-form the initial section featuring at least one corner region-preferably at least two corner regions-the wall sections adjacent to the corner region are pre-shaped in a curved manner-as viewed in cross-section-counter to the direction of applied pressure, and subsequently re-shaped by applying the high internal pressure of the medium that can flow, displacing the corner region in the direction in which the pressure is applied. To that end a section with hollow space delimited by section walls is employed in which two section walls define each corner region of the section cross-section, whereby at least one of the section walls at the corner region features a region that is curved in cross-section. Preferred is a polygonal cross-section, the section walls of which feature the inwards curved region between each of the corner regions or, such in which selected section walls connecting two corner regions each feature a curved region.
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