公开(公告)号：US11453042B2

公开(公告)日：2022-09-27

申请号：US16316444

申请日：2017-07-13

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Shinji Kamoto ,  Koichi Kondo ,  Yusaku Kobayashi ,  Hideki Uchida ,  Yugo Matsui ,  Daisuke Hirota ,  Shunji Matsuzaki

IPC分类号： B21J9/02 ,  B21H7/00 ,  B21H9/02 ,  B21J13/10 ,  B21H9/00

摘要： A forging roll device includes, a pair of roll axes which are provided so that an axis center of each of the roll axes are parallel to each other and in which a die is attached to each of the roll axes; and a material holder/conveyer which conveys a held shaping target material between the pair of roll axes, wherein, each one of the pair of roll axes includes a plurality of die attaching surfaces positioned in a circumferential direction, and an outer circumferential surface between any of two of the plurality of die attaching surfaces in each one of the pair of roll axes is closer to a planar surface than a cylindrical surface with the axis center as the center.