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EP 3 914 402 A1

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(43) Date of publication: 01.12.2021 Bulletin 2021/48 (21) Application number: 19911234.3 (22) Date of filing: 25.01.2019

(51) International Patent Classification (IPC):  B21B 37/58(2006.01) B21B 37/68(2006.01) B21B 37/30(2006.01) (52) Cooperative Patent Classification (CPC): B21B 37/30; B21B 37/58; B21B 37/68 (86) International application number: PCT/JP2019/002557 (87) International publication number: WO 2020/152868 (30.07.2020 Gazette 2020/31)

(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 (71) Applicant: Primetals Technologies Japan, Ltd. Hiroshima-shi, Hiroshima 733-8553 (JP)

(72) Inventors: OMURA Akihiro Hiroshima-shi, Hiroshima 733-8553 (JP) SAKO Akira Hiroshima-shi, Hiroshima 733-8553 (JP) HIURA Tadashi Hiroshima-shi, Hiroshima 733-8553 (JP) TAKEGUCHI Toru Hiroshima-shi, Hiroshima 733-8553 (JP) KINOSE Ryohei Hiroshima-shi, Hiroshima 733-8553 (JP) FURUMOTO Hideaki Hiroshima-shi, Hiroshima 733-8553 (JP) KANEMORI Shinya Tokyo 1008332 (JP) (74) Representative: Strehl Schübel-Hopf & Partner  Maximilianstrasse 54 80538 München 80538 München (DE)