| 摘要 |
A method of producing a composite component, in which a hollow section is expanded, at least in regions, by internal high pressure. In a first step a region of the hollow section is expanded until it comes to lie against an edge region of a cavity of a combined hydroforming and injection mold. In a second step the cavity is filled with an injection molding compound. In a third step the hollow section, at least in regions, is expanded further, which increases the internal high pressure. |
| 主权项 |
1. A method of producing a composite component having a corrugated structure, in which a hollow section is expanded, at least in regions, by internal high pressure, comprising:
a first step of expanding a region of the hollow section until the region lies against an edge region of a cavity of a combined hydroforming and injection mold; a second step, that begins after the first step has finished, of filling the cavity with an injection molding compound; and a third step, that begins after the second step has finished, of further expanding the hollow section into the cavity, at least in regions, which increases the internal high pressure, wherein
in the third step, an increasing pressure expands the hollow section into the mold cavity thereby pushing back a still warm and formable compound material,during the further expansion in the third step a valve of at least one exit channel of the cavity is opened, so that the injection molding compound displaced by the expansion of the hollow section emerges from the cavity, andthe corrugated structure has wave crests and troughs. |
