Composite tube

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 15/18 (2006.01) B32B 15/20 (2006.01) C10G 75/00 (2006.01) C22C 9/10 (2006.01)

Patent

CA 2534326

A composite tube having a corrosion resistant member and a load-bearing member is provided. The corrosion resistant member is a Cu-Al alloy and has a wall thickness of at least 0.5 mm, while the load-bearing member is a Fe, Ni or Co based alloy having a wall thickness of at least 1 mm. The composite tube can be manufactured by conventional means like extrusion, rolling, welding etc. The composite tube is to be used in environments where the risk of metal dusting, coking or carburisation is high.

La présente invention a trait à un tube composite comportant un élément résistant à la corrosion et un élément porteur de charge. L'élément résistant à la corrosion est un alliage de cuivre et d'aluminium et présente une épaisseur de paroi égale ou supérieure à 0,5 mm, tandis que l'élément porteur de charge est un alliage à base de fer et de nickel ou de cobalt présentant une épaisseur de paroi égale ou supérieure à 1 mm. Le tube composite peut être fabriqué par un procédé classique tel que l'extrusion, le laminage, le soudage ou analogue. Le tube composite est destiné à être utilisé dans des environnements où le risque d'empoussièrement métallique, de calaminage ou de carburation est élevé.

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