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    Turbine rotor, manufacturing method thereof and steam turbine using turbine rotor
    2.
    发明公开
    Turbine rotor, manufacturing method thereof and steam turbine using turbine rotor 有权
    涡轮转子制造方法，并与涡轮机转子的蒸汽轮机

    公开(公告)号：EP2676759A3

    公开(公告)日：2016-11-23

    申请号：EP13172975.8

    申请日：2013-06-20

    申请人： Mitsubishi Hitachi Power Systems, Ltd.

    发明人： Nishioka, Eiji ,  Murata, Kenichi ,  Endo, Kazuhiko ,  Sato, Jun ,  Namatame, Toshio ,  Imano, Shinya

    IPC分类号： B23K9/04 ,  B23K9/167 ,  B23K9/173 ,  B23P15/04 ,  F01D5/06 ,  B23P15/00 ,  B23K101/00 ,  B23K101/06

    CPC分类号： F01D5/08 ,  B23K9/044 ,  B23K9/048 ,  B23K9/167 ,  B23K9/173 ,  B23K2201/001 ,  B23K2201/06 ,  B23P15/006 ,  F01D5/063

    摘要： The present invention is a turbine rotor (20) which includes: a high temperature side rotor base material (21), and a low temperature side rotor base material (22). The high temperature side rotor base material (21) and the low temperature side rotor base material (22) respectively include concavities (26, 27) and grooves. The turbine rotor (20) has an enclosed space section formed by the concavity (26) of the high temperature side rotor base material (21) and the concavity (27) of the low temperature side rotor base material (22) being disposed opposingly, and a gap formed by the groove of the high temperature side rotor base material (21) and the groove of the low temperature side rotor base material (22) being disposed opposingly. The turbine rotor (20) contains a buildup welding section (23) formed between the high temperature side rotor base material (21) and the low temperature side rotor base material (22). The buildup welding section (23) has the same composition as that of the high temperature side rotor base material (21) or the low temperature side rotor base material (22), and has a penetration bead on the enclosed space section side, and the gap contains a weld metal filled therein. Thus, a stable penetration bead can be formed in a dissimilar material welded rotor (20) combining two kinds of alloy materials different in thermal property, and then generation of a non-welded portion of a butting section that becomes a start point of fracture can be suppressed.

    TURBINE ROTOR, METHOD OF MANUFACTURING SUCH TURBINE ROTOR, AND STEAM TURBINE HAVING SUCH TURBINE ROTOR
    4.
    发明授权
    TURBINE ROTOR, METHOD OF MANUFACTURING SUCH TURBINE ROTOR, AND STEAM TURBINE HAVING SUCH TURBINE ROTOR 有权
    涡轮转子，制造这种涡轮转子的方法以及具有这种涡轮转子的蒸汽涡轮

    公开(公告)号：EP2676759B1

    公开(公告)日：2018-04-11

    申请号：EP13172975.8

    申请日：2013-06-20

    申请人： Mitsubishi Hitachi Power Systems, Ltd.

    发明人： Nishioka, Eiji ,  Murata, Kenichi ,  Endo, Kazuhiko ,  Sato, Jun ,  Namatame, Toshio ,  Imano, Shinya

    IPC分类号： B23K9/04 ,  B23K9/167 ,  B23K9/173 ,  B23P15/04 ,  F01D5/06 ,  B23P15/00 ,  B23K101/00 ,  B23K101/06

    CPC分类号： F01D5/08 ,  B23K9/044 ,  B23K9/048 ,  B23K9/167 ,  B23K9/173 ,  B23K2101/001 ,  B23K2101/06 ,  B23P15/006 ,  F01D5/063

    摘要： The present invention is a turbine rotor (20) which includes: a high temperature side rotor base material (21), and a low temperature side rotor base material (22). The high temperature side rotor base material (21) and the low temperature side rotor base material (22) respectively include concavities (26, 27) and grooves. The turbine rotor (20) has an enclosed space section formed by the concavity (26) of the high temperature side rotor base material (21) and the concavity (27) of the low temperature side rotor base material (22) being disposed opposingly, and a gap formed by the groove of the high temperature side rotor base material (21) and the groove of the low temperature side rotor base material (22) being disposed opposingly. The turbine rotor (20) contains a buildup welding section (23) formed between the high temperature side rotor base material (21) and the low temperature side rotor base material (22). The buildup welding section (23) has the same composition as that of the high temperature side rotor base material (21) or the low temperature side rotor base material (22), and has a penetration bead on the enclosed space section side, and the gap contains a weld metal filled therein. Thus, a stable penetration bead can be formed in a dissimilar material welded rotor (20) combining two kinds of alloy materials different in thermal property, and then generation of a non-welded portion of a butting section that becomes a start point of fracture can be suppressed.