Weldable aluminium alloy structural component

Details Weldable aluminium alloy structural component Weldable aluminium alloy structural component

B - Operations, Transporting

32

B

B32B 15/01 (2006.01) C22C 21/06 (2006.01)

Patent

CA 2367752

Improved shape and strength of the weld in a welded structure are obtained by use of a weldable aluminium product comprising a structural component which is a sheet, a plate or an extruded body and is made of an aluminium alloy containing not more than 1.5 wt % Zn. This component has, adhered on at least one side, a cladding layer made of an AA7xxx-series alloy having a corrosion potential lower than that of said alloy of said structural component. The alloy of the structural component is preferably an AA5xxx-series alloy containing Mg in the range 2 to 6 wt %.

Pour améliorer la forme et la solidité de la soudure dans une structure soudée, on utilise un produit en aluminium soudable comprenant un élément de structure qui peut être une feuille, une plaque ou un corps extrudé et qui est constitué d'un alliage d'aluminium contenant au maximum 1,5 % en poids de Zn. Cet élément est tel que sur au moins un de ses cotés adhère une couche de placage réalisée en alliage de série AA7xxx dont le potentiel de corrosion est inférieur à celui de l'alliage de l'élément de structure. L'alliage de l'élément de structure est de préférence un alliage de série AA5xxx dont le pourcentage en poids de Mg compris entre 2 et 6.

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