(19)

(11)

EP 3 555 334 A1

(12)

(43) Date of publication: 23.10.2019 Bulletin 2019/43 (21) Application number: 16823022.5 (22) Date of filing: 16.12.2016

(51) International Patent Classification (IPC):  C22C 37/00(2006.01) C22C 37/10(2006.01) C21D 5/00(2006.01) C22C 37/04(2006.01) C22C 33/08(2006.01) C21D 5/02(2006.01) (86) International application number: PCT/FI2016/050889 (87) International publication number: WO 2018/109259 (21.06.2018 Gazette 2018/25)

(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: MA MD (71) Applicant: Wärtsilä Finland Oy 65100 Vaasa (FI)	(72) Inventor: LAINE, Jarkko 65100 Vaasa (FI) (74) Representative: Berggren Oy, Helsinki & Oulu  P.O. Box 16 Eteläinen Rautatiekatu 10A 00101 Helsinki 00101 Helsinki (FI)