(19)
(11) EP 3 350 355 A1

(12)

(43) Date of publication:
25.07.2018 Bulletin 2018/30

(21) Application number: 16846935.1

(22) Date of filing: 20.04.2016
(51) International Patent Classification (IPC): 
C22F 1/043(2006.01)
C22F 1/053(2006.01)
C22C 21/06(2006.01)
C22C 21/10(2006.01)
 C22F 1/047(2006.01)
C22C 21/02(2006.01)
C22C 21/08(2006.01)
(86) International application number:
PCT/NO2016/000014
(87) International publication number:
WO 2017/048130 (23.03.2017 Gazette 2017/12)
(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 RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD

(30) Priority: 18.09.2015 NO 20151232

(71) Applicant: Norsk Hydro ASA
0240 Oslo (NO)

(72) Inventors:
  • TUNDAL, Ulf
    6600 Sunndalsøra (NO)
  • REISO, Oddvin
    6600 Sunndalsøra (NO)

(74) Representative: Speck, Philip 
Norsk Hydro ASA Intellectual Property Department P.O. Box 980 Skøyen
0240 Oslo
0240 Oslo (NO)

   


(54) METHOD FOR THE MANUFACTURING OF EXTRUDED PROFILES THAT CAN BE ANODIZED WITH HIGH GLOSS SURFACES, THE PROFILES BEING EXTRUDED OF AN AGE HARDENABLE ALUMINIUM ALLOY THAT CAN BE RECRYSTALLIZED AFTER COLD DEFORMATION, FOR EXAMPLE A 6XXX OR A 7XXX ALLOY