公开(公告)号：US20100122754A1

公开(公告)日：2010-05-20

申请号：US11528474

申请日：2006-09-28

申请人： Hirotsugu Kawanaka ,  Masahiko Arai ,  Hideo Yoda

发明人： Hirotsugu Kawanaka ,  Masahiko Arai ,  Hideo Yoda

IPC分类号： C21D8/00 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52 ,  C22C38/54

CPC分类号： F01D5/02 ,  C21D8/00 ,  C21D9/28 ,  C21D9/38 ,  C22C38/001 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52 ,  F01D5/28 ,  F05D2230/25 ,  F05D2230/40

摘要： A high-strength martensite heat resisting steel which has long-time creep rupture strength required for steam temperature condition of 600-630° C. and toughness at room temperature, and which is suitable for use as a material of a steam turbine rotor shaft and as large-sized forged steel with an improvement of hot forgeability. A method of producing the steel and applications of the steel are also provided. The high-strength martensite heat resisting steel contains 0.05-0.20% by mass of C, 0.1% or less of Si, 0.05-0.6% of Mn, 0.1-0.6% of Ni, 9.0-12.0% of Cr, 0.20-0.65% of Mo, 2.0-3.0% of W, 0.1-0.3% of V, 2.0% or less of Co, 0.02-0.20% of Nb, 0.015% or less of B, 0.01-0.10% of N, and 0.015% or less of Al, (W/Mo) being 4.0-10.0.

摘要翻译： 一种高温马氏体耐热钢，其蒸汽温度条件为600-630℃所需的长时间蠕变断裂强度，室温下的韧性，适用于汽轮机转子轴的材料， 作为大型锻钢，具有提高热锻性能。 还提供了钢的制造方法和钢的应用。 高强度马氏体耐热钢含有0.05-0.20质量％的C，0.1％或更少的Si，0.05-0.6％的Mn，0.1-0.6％的Ni，9.0-12.0％的Cr，0.20-0.65％ 的Mo，2.0〜3.0％的W，0.1-0.3％的V，2.0％以下的Co，0.02〜0.20％的Nb，0.015％以下的B，0.01-0.10％的N和0.015％以下的 的Al，（W / Mo）为4.0〜10.0。

公开(公告)号：US20070071599A1

公开(公告)日：2007-03-29

申请号：US11528439

申请日：2006-09-28

申请人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hideo Yoda

发明人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hideo Yoda

IPC分类号： F04D29/44

CPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C22C38/52

摘要： A high-strength heat resisting cast steel which has high creep rupture strength at temperatures of 620° C. or above, high toughness, and good weldability. A method of producing the steel, a steam turbine casing, a main steam valve casing, and a steam control valve casing, each casing being made of that steel, as well as a steam turbine power plant using those components are also provided. The high-strength heat resisting cast steel contains 0.06-0.16% by mass of C, 0.1-1% of Si, 0.1-1% of Mn, 8-12% of Cr, 0.1-1.0% of Ni, 0.7% or less of Mo, 1.9-3.0% of W, 0.05-0.3% of V, 0.01-0.15% of one or more of Nb, Ta and Zr in total, 0.1-2% of Co, 0.01-0.08% of N, and 0.0005-0.01% of B, the balance being Fe and unavoidable impurities.

摘要翻译： 高温耐热铸钢，其温度为620℃以上，蠕变断裂强度高，韧性高，焊接性好。 还提供了一种制造钢的方法，蒸汽轮机壳体，主蒸汽阀壳体和蒸汽控制阀壳体，每个壳体由该钢制成，以及使用这些部件的蒸汽轮机发电厂。 高强度耐热铸钢含有0.06-0.16质量％的C，0.1-1％的Si，0.1-1％的Mn，8-12％的Cr，0.1-1.0％的Ni，0.7％以下的 的Mo，1.9〜3.0％的V，0.05〜0.3％的V，0.01-0.15％的Nb，Ta和Zr中的一种或多种，​​Co：0.1〜2％，N：0.01-0.08％，N：0.0005 -0.01％的B，余量为Fe和不可避免的杂质。

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.

公开(公告)号：US20090068052A1

公开(公告)日：2009-03-12

申请号：US12153552

申请日：2008-05-21

申请人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Isao Takehara ,  Hidetoshi Kuroki

发明人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Isao Takehara ,  Hidetoshi Kuroki

IPC分类号： C22C38/52 ,  C22C38/44

CPC分类号： C22C38/44 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52 ,  C22C38/54

摘要： The invention is of a heat resisting martensitic steel comprising, by weight, 0.05 to 0.30% C, not more than 0.50% Si, not more than 0.60% Mn, 8.0 to 13.0% Cr, 0.5 to 3.0% Ni, 1.0 to 3.0% Mo, 0.1 to 1.5% W, 0.5 to 4% Co, 0.05 to 0.35% V, 0.02 to 0.30% in total of one or two elements selected from the group consisting of Nb and Ta, and 0.02 to 0.10% N, wherein a value of the square of a difference between the Ni amount and the Co amount, and the Ni amount are not more than values determined by a straight line drawn on a point A (1.0, 2.7%) and a point B (2.5, 1.0%) in the orthogonal coordinates shown in the attached drawing of FIG. 2 which represents a relationship between the above square value and the Ni amount, and an amount ratio of Mo/(Mo+0.5W) is not less than 0.5. The heat resisting steel is suitably used in various components of a gas turbine.

摘要翻译： 本发明是耐热马氏体钢，其含有0.05〜0.30％C，不大于0.50％Si，不大于0.60％Mn，8.0〜13.0％Cr，0.5〜3.0％Ni，1.0〜3.0％ Mo，0.1〜1.5％W，0.5〜4％Co，0.05〜0.35％V，0.02〜0.30％，1种或2种选自Nb和Ta的元素和0.02〜0.10％N，其中a Ni量和Co量之间的差的平方值，Ni量不大于通过点A（1.0,2.7％）和点B（2.5,1.0％）绘制的直线所确定的值， ）在图1的附图中示出。 2表示上述平方值与Ni量之间的关系，Mo /（Mo + 0.5W）的量比不小于0.5。 耐热钢适用于燃气轮机的各种部件。

公开(公告)号：US20050074356A1

公开(公告)日：2005-04-07

申请号：US10757847

申请日：2004-01-16

申请人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Isao Takehara ,  Hidetoshi Kuroki

发明人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Isao Takehara ,  Hidetoshi Kuroki

IPC分类号： F01D5/06 ,  C22C38/00 ,  C22C38/44 ,  C22C38/46 ,  C22C38/52 ,  C22C38/54 ,  F01D5/28 ,  F02C7/00

CPC分类号： C22C38/44 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52 ,  C22C38/54

摘要： The invention is of a heat resisting martensitic steel comprising, by weight, 0.05 to 0.30% C, not more than 0.50% Si, not more than 0.60% Mn, 8.0 to 13.0% Cr, 0.5 to 3.0% Ni, 1.0 to 3.0% Mo, 0.1 to 1.5% W, 0.5 to 4% Co, 0.05 to 0.35% V, 0.02 to 0.30% in total of one or two elements selected from the group consisting of Nb and Ta, and 0.02 to 0.10% N, wherein a value of the square of a difference between the Ni amount and the Co amount, and the Ni amount are not more than values determined by a straight line drawn on a point A (1.0, 2.7%) and a point B (2.5, 1.0%) in the orthogonal coordinates shown in the attached drawing of FIG. 2 which represents a relationship between the above square value and the Ni amount, and an amount ratio of Mo/(Mo+0.5 W) is not less than 0.5. The heat resisting steel is suitably used in various components of a gas turbine.

摘要翻译： 本发明是耐热马氏体钢，其含有0.05〜0.30％C，不大于0.50％Si，不大于0.60％Mn，8.0〜13.0％Cr，0.5〜3.0％Ni，1.0〜3.0％ Mo，0.1〜1.5％W，0.5〜4％Co，0.05〜0.35％V，0.02〜0.30％，1种或2种选自Nb和Ta的元素和0.02〜0.10％N，其中a Ni量和Co量之间的差的平方值，Ni量不大于通过点A（1.0,2.7％）和点B（2.5,1.0％）绘制的直线所确定的值， ）在附图中所示的正交坐标中图。 2表示上述平方值与Ni量之间的关系，Mo /（Mo + 0.5W）的量比不小于0.5。 耐热钢适用于燃气轮机的各种部件。

公开(公告)号：US08025746B2

公开(公告)日：2011-09-27

申请号：US11689546

申请日：2007-03-22

申请人： Hirotsugu Kawanaka ,  Masahiko Arai ,  Tateki Nakamura

发明人： Hirotsugu Kawanaka ,  Masahiko Arai ,  Tateki Nakamura

IPC分类号： C22C38/54 ,  C22C38/46 ,  C22C38/50

CPC分类号： F04D29/023 ,  C21D1/20 ,  C21D1/28 ,  C21D1/30 ,  C21D6/004 ,  C21D9/0068 ,  C21D2211/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  F04D29/4206 ,  F05D2230/21 ,  F05D2300/171

摘要： A casing is formed from an alloy which contains, by mass, 0.08-0.20% C, 0.05-0.45% Si, 0.10-0.30% Mn, 0.80-1.40% Ni, 1.00-1.40% Cr, 1.20-1.60% Mo, 0.10-0.30% V, 0.06-0.10% Ti, 0.0005-0.0010% B, not more than 0.01% P, not more than 0.01% S, and not more than 0.005% Al, the balance being Fe and unavoidable impurity elements. The casing has excellent high-temperature strength, high toughness and excellent weldability, and is applicable to casings used in high-temperature high-pressure steam environments.

摘要翻译： 壳体由合金形成，其含有0.08-0.20％的C，0.05-0.45％的Si，0.10-0.30％的Mn，0.80-1.40％的Ni，1.00-1.40％的Cr，1.20-1.60％的Mo，0.10 -0.30％V，0.06-0.10％Ti，0.0005-0.0010％B，不大于0.01％P，不超过0.01％S，不大于0.005％Al，余量为Fe和不可避免的杂质元素。 外壳具有优异的高温强度，高韧性和优异的焊接性，适用于高温高压蒸汽环境中使用的外壳。

公开(公告)号：US07632066B2

公开(公告)日：2009-12-15

申请号：US11480978

申请日：2006-07-06

申请人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Kenichi Murata ,  Hajime Toriya

发明人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Kenichi Murata ,  Hajime Toriya

IPC分类号： F01D25/00

CPC分类号： B22D13/02 ,  C22C38/001 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  F05B2260/60

摘要： A pipe for a steam turbine is formed of a centrifugal casting material to achieve resistance against higher temperatures and improve reliability of the pipe by employing, as a pipe material, a centrifugal casting material normalized to contain uniform and finer crystal grains. The centrifugal casting material is made of steel having a columnar structure in the radial direction with the crystal grain size number of 5 or more in a plane perpendicular to the radial direction. The steel includes 0.05-0.5% by mass C, not more than 1.0% Si, 0.05-1.5% Mn, 0.01-2.5% Ni, 8.0-13.0% Cr, 0.05-2.5% Mo, not more than 3.0% W, 0.05-0.35% V, 0.01-0.5% Nb, not more than 5% Co, 0.01-0.1% N, not more than 0.03% B, and not more than 0.05% Al.

摘要翻译： 用于汽轮机的管由离心铸造材料形成，以通过采用归一化为含有均匀和更细晶粒的离心铸造材料作为管材料来实现耐高温性和提高管的可靠性。 离心铸造材料由垂直于径向方向的平面中的晶粒尺寸数为5以上的在径向具有柱状结构的钢制成。 该钢含有0.05〜0.5质量％的C，不大于1.0％的Si，0.05-1.5％的Mn，0.01-2.5％的Ni，8.0-13.0％的Cr，0.05-2.5％的Mo，不大于3.0％的W，0.05 -0.35％V，0.01-0.5％Nb，不大于5％Co，0.01-0.1％N，不大于0.03％B和不大于0.05％Al。

公开(公告)号：US20070224041A1

公开(公告)日：2007-09-27

申请号：US11689546

申请日：2007-03-22

申请人： Hirotsugu Kawanaka ,  Masahiko Arai ,  Tateki Nakamura

发明人： Hirotsugu Kawanaka ,  Masahiko Arai ,  Tateki Nakamura

IPC分类号： F04D29/44

CPC分类号： F04D29/023 ,  C21D1/20 ,  C21D1/28 ,  C21D1/30 ,  C21D6/004 ,  C21D9/0068 ,  C21D2211/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  F04D29/4206 ,  F05D2230/21 ,  F05D2300/171

摘要： A casing is formed from an alloy which contains, by mass, 0.08-0.20% C, 0.05-0.45% Si, 0.10-0.30% Mn, 0.80-1.40% Ni, 1.00-1.40% Cr, 1.20-1.60% Mo, 0.10-0.30% V, 0.06-0.10% Ti, 0.0005-0.0010% B, not more than 0.01% P, not more than 0.01% S, and not more than 0.005% Al, the balance being Fe and unavoidable impurity elements. The casing has excellent high-temperature strength, high toughness and excellent weldability, and is applicable to casings used in high-temperature high-pressure steam environments.

摘要翻译： 壳体由合金形成，其含有0.08-0.20％的C，0.05-0.45％的Si，0.10-0.30％的Mn，0.80-1.40％的Ni，1.00-1.40％的Cr，1.20-1.60％的Mo，0.10 -0.30％V，0.06-0.10％Ti，0.0005-0.0010％B，不大于0.01％P，不超过0.01％S，不大于0.005％Al，余量为Fe和不可避免的杂质元素。 外壳具有优异的高温强度，高韧性和优异的焊接性，适用于高温高压蒸汽环境中使用的外壳。

公开(公告)号：US20070014671A1

公开(公告)日：2007-01-18

申请号：US11480978

申请日：2006-07-06

申请人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Kenichi Murata ,  Hajime Toriya

发明人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Kenichi Murata ,  Hajime Toriya

IPC分类号： F03B3/12

CPC分类号： B22D13/02 ,  C22C38/001 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  F05B2260/60

摘要： A pipe for a steam turbine is formed of a centrifugal casting material to achieve resistance against higher temperatures and improve reliability of the pipe by employing, as a pipe material, a centrifugal casting material normalized to contain uniform and finer crystal grains. The centrifugal casting material is made of steel having a columnar structure in the radial direction with the crystal grain size number of 5 or more in a plane perpendicular to the radial direction. The steel includes 0.05-0.5% by mass C, not more than 1.0% Si, 0.05-1.5% Mn, 0.01-2.5% Ni, 8.0-13.0% Cr, 0.05-2.5% Mo, not more than 3.0% W, 0.05-0.35% V, 0.01-0.5% Nb, not more than 5% Co, 0.01-0.1% N, not more than 0.03% B, and not more than 0.05% Al.

摘要翻译： 用于汽轮机的管由离心铸造材料形成，以通过采用归一化为含有均匀和更细晶粒的离心铸造材料作为管材料来实现耐高温性和提高管的可靠性。 离心铸造材料由垂直于径向方向的平面中的晶粒尺寸数为5以上的在径向具有柱状结构的钢制成。 该钢含有0.05〜0.5质量％的C，不大于1.0％的Si，0.05-1.5％的Mn，0.01-2.5％的Ni，8.0-13.0％的Cr，0.05-2.5％的Mo，不大于3.0％的W，0.05 -0.35％V，0.01-0.5％Nb，不大于5％Co，0.01-0.1％N，不大于0.03％B和不大于0.05％Al。