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(11)

EP 3 883 705 A1

(12)

(43) Date of publication: 29.09.2021 Bulletin 2021/39 (21) Application number: 20702285.6 (22) Date of filing: 27.01.2020

(51) International Patent Classification (IPC):  B22D 11/041(2006.01) B22D 11/12(2006.01) B22D 11/18(2006.01) B22D 11/115(2006.01) B22D 11/16(2006.01) (52) Cooperative Patent Classification (CPC): B22D 11/122; B22D 11/186; B22D 11/115; B22D 11/16; B22D 11/041 (86) International application number: PCT/EP2020/051958 (87) International publication number: WO 2020/157020 (06.08.2020 Gazette 2020/32)

(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: 30.01.2019 US 201962798702 P (71) Applicant: ABB SCHWEIZ AG 5400 Baden (CH)	(72) Inventors: YANG, Hongliang 724 82 Västerås (SE) SEDÉN, Martin 722 46 Västerås (SE) JACOBSON, Nils Peter 111 22 Stockholm (SE) LEHMAN, Anders 167 73 Bromma (SE) (74) Representative: Kransell & Wennborg KB  P.O. Box 27834 115 93 Stockholm 115 93 Stockholm (SE)