Hydroformed product

B - Operations – Transporting – 21 – D

Patent

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Details

B21D 53/88 (2006.01) B21D 26/02 (2006.01)

Patent

CA 2684303

This invention provides a hydroformed article comprising a metal pipe as a material which has been integrally worked by cold plastic working. The hydroformed article is characterized in that (x) one or more bent parts are provided, (y) a tube expanded part is provided at at least one part of the bent parts. The dimension of the tube expanded part in a direction toward a bent outer side (or inner side) in a cross section perpendicular to the tube axis, and in a direction perpendicular to the direction is at least 1.35 times the equivalent circle diameter of the end of the metallic pipe, and (z) the inner side (or outer side) of the bent part has a substantially identical radius of curvature.

L'invention concerne un article hydroformé comprenant un tuyau en métal en tant que matériau intégralement usiné par façonnage plastique à froid. L'article hydroformé est caractérisé en ce que (x) une ou plusieurs parties courbées sont prévues, (y) une partie étendue de tube est munie d'au moins une partie des parties courbées. La dimension de la partie étendue de tube dans une direction orientée vers un côté externe courbé (ou côté interne) dans une section transversale perpendiculaire à l'axe du tube, et dans une direction perpendiculaire à la direction équivaut à au moins 1,35 fois le diamètre du cercle de l'extrémité du tuyau métallique, et (z) le côté interne (ou le côté externe) de la partie courbée présente un rayon de courbure sensiblement identique.

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