公开(公告)号：US07540711B2

公开(公告)日：2009-06-02

申请号：US11172929

申请日：2005-07-05

申请人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Kennichi Murata ,  Hideo Yoda

发明人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Kennichi Murata ,  Hideo Yoda

IPC分类号： F04D29/04

CPC分类号： F01D5/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  F01D5/28 ,  F05C2201/0466 ,  F05D2240/60 ,  F05D2300/131 ,  F05D2300/132 ,  F05D2300/161

摘要： The invention provides a heat resisting steel having superior high-temperature strength and notch rupture strength, a rotor shaft using the heat resisting steel, a steam turbine using the rotor shaft, and a power plant using the steam turbine. The heat resisting steel is made of a Cr—Mo—V low-alloy steel containing 0.15-0.40% by weight of C, not more than 0.5% of Si, 0.05-0.50% of Mn, 0.5-1.5% of Ni, 0.8-1.5% of Cr, 0.8-1.8% of Mo and 0.05-0.35% of V, and having a (Ni/Mn) ratio of 3.0-10.0.

摘要翻译： 本发明提供一种具有优异的高温强度和切口断裂强度的耐热钢，使用该耐热钢的转子轴，使用该转子轴的蒸汽轮机，以及使用该蒸汽轮机的动力装置。 耐热钢由Cr-Mo-V低合金钢制成，含有0.15-0.40重量％的C，不超过0.5％的Si，0.05-0.50％的Mn，0.5-1.5％的Ni，0.8 -1.5％的Cr，0.8-1.8％的Mo和0.05-0.35％的V，并且（Ni / Mn）比为3.0-10.0。

公开(公告)号：US20060216145A1

公开(公告)日：2006-09-28

申请号：US11172929

申请日：2005-07-05

申请人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Kennichi Murata ,  Hideo Yoda

发明人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Kennichi Murata ,  Hideo Yoda

IPC分类号： F04D29/44

CPC分类号： F01D5/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  F01D5/28 ,  F05C2201/0466 ,  F05D2240/60 ,  F05D2300/131 ,  F05D2300/132 ,  F05D2300/161

摘要： The invention provides a heat resisting steel having superior high-temperature strength and notch rupture strength, a rotor shaft using the heat resisting steel, a steam turbine using the rotor shaft, and a power plant using the steam turbine. The heat resisting steel is made of a Cr—Mo—V low-alloy steel containing 0.15-0.40% by weight of C, not more than 0.5% of Si, 0.05-0.50% of Mn, 0.5-1.5% of Ni, 0.8-1.5% of Cr, 0.8-1.8% of Mo and 0.05-0.35% of V, and having a (Ni/Mn) ratio of 3.0-10.0.