Improved method of forming a tubular blank into a structural...

B - Operations – Transporting – 23 – P

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B23P 17/00 (2006.01) B21D 26/02 (2006.01) B21J 5/04 (2006.01)

Patent

CA 2497359

A method of forming an elongated metal blank (10) into a structural component having a predetermined outer configuratio (A). The method includes providing a shape imparting cavity or shell section (200a, b) formed of a rigid material which includes an innersurface defining the predetermined shape, placing the metal blank (10) into the cavity or shell section (200a, b), and forming the metal blank (10) into the component by heating axial portions of the metal blank (10) and forcing a fluid at a high pressure into the metal blank (10) until the metal blank at least partially conforms to at least a portion of the inner surface of the cavity or shell section (200a, b) to form the structural component.

L'invention concerne un procédé pour transformer une découpe métallique allongée en un composant structurel ayant une configuration prédéterminée. Le procédé consiste à créer une cavité de formage ou une section de gaine à partir d'un matériau rigide, qui comprend une surface interne définissant la forme prédéterminée, à placer la découpe métallique dans une cavité de formage ou une section de gaine et à transformer la découpe métallique par le réchauffement des parties axiales de la découple métallique et par l'injection d'un fluide haute pression dans la découpe métallique, et ce jusqu'à ce que la découpe métallique s'adapte au moins partiellement à une partie de la surface interne de la cavité ou de la partie de gaine, de manière à former le composant structurel désiré.

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