(19)

(11)

EP 2 513 357 A1

(12)

(43) Date of publication: 24.10.2012 Bulletin 2012/43 (21) Application number: 09805823.3 (22) Date of filing: 18.12.2009

(51) International Patent Classification (IPC):  C25C 3/08(2006.01) B21B 1/16(2006.01) C25C 3/16(2006.01) (86) International application number: PCT/IB2009/007830 (87) International publication number: WO 2011/073713 (23.06.2011 Gazette 2011/25)

(84) Designated Contracting States: 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 (71) Applicant: Arcelormittal Investigación y Desarrollo SL 48910 Sestao, Bizkaia (ES)	(72) Inventor: BOURDOUXHE, Michel L-4967 Clemency (LU) (74) Representative: pronovem  Meyers & Van Malderen 261, route d'Arlon B.P. 111 8002 Strassen 8002 Strassen (LU)