(19)

(11)

EP 2 459 758 A1

(12)

(43) Date of publication: 06.06.2012 Bulletin 2012/23 (21) Application number: 10736631.2 (22) Date of filing: 22.07.2010

(51) International Patent Classification (IPC):  C21D 1/34(2006.01) C21D 9/573(2006.01) F27D 17/00(2006.01) C21D 9/00(2006.01) B21B 45/02(2006.01) C21D 11/00(2006.01) (86) International application number: PCT/EP2010/004485 (87) International publication number: WO 2011/012257 (03.02.2011 Gazette 2011/05)

(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 (30) Priority: 27.07.2009 EP 09009688 (71) Applicant: Tata Steel Nederland Technology B.V. 1970 CA IJmuiden (NL)	(72) Inventor: PAULUSSEN, Geert NL-1970 CA Ijmuiden (NL) (74) Representative: Kruit, Jan  Tata Steel Nederland Technology B.V. Group Intellectual Property Services P.O. Box 10000 NL-1970 CA IJmuiden NL-1970 CA IJmuiden (NL)