(19)

(11)

EP 3 704 282 A1

(12)

(43) Date of publication: 09.09.2020 Bulletin 2020/37 (21) Application number: 18873592.2 (22) Date of filing: 29.10.2018

(51) International Patent Classification (IPC):  C22C 38/04(2006.01) C22C 38/02(2006.01) C22C 38/38(2006.01) C22C 38/16(2006.01) C22C 38/20(2006.01) C22C 38/24(2006.01) C22C 38/12(2006.01) C22C 38/06(2006.01) C22C 38/14(2006.01) C22C 38/32(2006.01) C22C 38/22(2006.01) C22C 38/26(2006.01) (86) International application number: PCT/CN2018/112367 (87) International publication number: WO 2019/085855 (09.05.2019 Gazette 2019/19)

(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: 02.11.2017 CN 201711063360 (71) Applicants: Easyforming Steel Technology Co., Ltd. Chongqing 401120 (CN) Volkswagen Aktiengesellschaft 38440 Wolfsburg (DE)	(72) Inventors: YI, Hongliang Jiangsu 215000 (CN) XIONG, Xiaochuan Jiangsu 215000 (CN) OPITZ, Tobias 38102 Braunschweig (DE) (74) Representative: Patentanwälte Ruff, Wilhelm, Beier, Dauster & Partner mbB  Kronenstraße 30 70174 Stuttgart 70174 Stuttgart (DE)