(19)

(11)

EP 3 068 919 A1

(12)

(43) Date of publication: 21.09.2016 Bulletin 2016/38 (21) Application number: 14799438.8 (22) Date of filing: 17.11.2014

(51) International Patent Classification (IPC):  C23C 8/12(2006.01) C23C 18/16(2006.01) B21C 37/04(2006.01) C23C 22/63(2006.01) D07B 1/06(2006.01) (86) International application number: PCT/EP2014/074713 (87) International publication number: WO 2015/071449 (21.05.2015 Gazette 2015/20)

(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 (30) Priority: 15.11.2013 EP 13005383 (71) Applicant: Tata Steel UK Limited London SW1P 4WY (GB)	(72) Inventors: BÖHM, Henagama Liyanage Mallika NL-1970 CA IJmuiden (NL) GRAHAM, Kevin Victor NL-1970 CA IJmuiden (NL) BÖHM, Sivasambu NL-1970 CA IJmuiden (NL) (74) Representative: Bodin, Andre  Tata Steel Nederland Technology B.V. Group Intellectual Property Services P.O. Box 10000 - 3G.37 1970 CA IJmuiden 1970 CA IJmuiden (NL)