Method for fabrication of tubes using rolling and extrusion

(19)

(11)

EP 2 311 998 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	26.03.2014 Bulletin 2014/13

(43)	Date of publication A2:
	20.04.2011 Bulletin 2011/16

(21)	Application number: 10251472.6

(22)	Date of filing: 19.08.2010

(51)

International Patent Classification (IPC):

C22C 1/04^(2006.01)

C22C 21/00^(2006.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
	Designated Extension States:
	BA ME RS

(30)

Priority:

16.10.2009 US 589104

(71)	Applicant: United Technologies Corporation
	Hartford, CT 06101 (US)

(72)	Inventor:
	Pandey, Awadh B. Jupiter, Florida 33458 (US)

(74)	Representative: Hall, Matthew Benjamin
	Dehns St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)

(54)	Method for fabrication of tubes using rolling and extrusion

(57) A method for producing a high strength aluminum alloy tubing containing L1₂ dispersoids from an aluminum alloy powder containing the L1₂ dispersoids. The powder is consolidated into a billet having a density of about 100 percent. The tube is formed by at least one of direct extrusion, Mannesmann process, pilgering, and rolling.

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