(19)

(11)

EP 2 768 989 A1

(12)

(43) Date of publication: 27.08.2014 Bulletin 2014/35 (21) Application number: 12759372.1 (22) Date of filing: 12.09.2012

(51) International Patent Classification (IPC):  C21D 1/20(2006.01) C22C 38/04(2006.01) C22C 38/26(2006.01) C21D 9/46(2006.01) C22C 38/06(2006.01) (86) International application number: PCT/EP2012/003823 (87) International publication number: WO 2013/037485 (21.03.2013 Gazette 2013/12)

(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 (30) Priority: 13.09.2011 EP 11007431 (71) Applicant: Tata Steel IJmuiden BV 1970 CA IJmuiden (NL)	(72) Inventor: ENNIS, Bernard Leo NL-1970 CA IJmuiden (NL) (74) Representative: Kruit, Jan  Tata Steel Nederland Technology BV Group Intellectual Property Services - 3G37 P.O. Box 10000 1970 CA Ijmuiden 1970 CA Ijmuiden (NL)