(19)

(11)

EP 3 963 114 A1

(12)

(43) Date of publication: 09.03.2022 Bulletin 2022/10 (21) Application number: 20719642.9 (22) Date of filing: 21.04.2020

(51) International Patent Classification (IPC):  C21D 8/02(2006.01) C22C 38/04(2006.01) B21B 37/26(2006.01) (52) Cooperative Patent Classification (CPC): C21D 8/0236; C22C 38/02; C22C 38/46; C22C 38/44; C22C 38/04; C21D 2211/002; C21D 2211/005; C23C 2/06; C22C 38/54; C22C 38/58; C21D 2211/008; C23C 2/02; C21D 9/46; C23C 2/12; C22C 38/50; C21D 8/0226; C22C 38/48; C22C 38/42; C21D 6/005; C21D 8/0273; C21D 1/673; C21D 6/008 (86) International application number: PCT/EP2020/061108 (87) International publication number: WO 2020/221628 (05.11.2020 Gazette 2020/45)

(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: KH MA MD TN (30) Priority: 30.04.2019 EP 19171939 (71) Applicant: Tata Steel IJmuiden B.V. 1951 JZ Velsen-Noord (NL)	(72) Inventors: ENNIS, Bernard Leo 1970 CA IJMUIDEN (NL) MOSTERT, Richard 1970 CA IJmuiden (NL) CELOTTO, Steven 1970 CA IJmuiden (NL) KOP, Theo Arnold 1970 CA IJmuiden (NL) (74) Representative: Group Intellectual Property Services  c/o Tata Steel Nederland Technology B.V. P.O. Box 10000 - 3G.37 1970 CA IJmuiden 1970 CA IJmuiden (NL)