公开(公告)号：EP2172299A2

公开(公告)日：2010-04-07

申请号：EP09169007.3

申请日：2009-08-31

申请人： Hitachi Ltd.

发明人： Sato, Jun ,  Imano, Shinya ,  Doi, Hiroyuki

IPC分类号： B23K35/00 ,  C22C19/05 ,  F01D5/00

CPC分类号： C22C19/055 ,  B23K35/004 ,  B23K35/304 ,  B23K2201/001 ,  C22C19/056 ,  C22F1/10 ,  F01D5/063 ,  Y02T50/671

摘要： The present invention provides, in a γ' phase precipitation strengthening type Ni-base alloy, an alloy excellent in heat treatment capability and weldability and suitable for joint with a ferritic steel. Further, the present invention provides a welded turbine rotor having the strength, ductility, and toughness simultaneously over the whole welded structure when a precipitation strengthening type Ni-base alloy having a heatproof temperature of 675°C or higher is joined to a ferritic steel.
A Ni-base alloy according to the present invention contains cobalt, chromium, aluminum, carbon, boron, and at least either tungsten or molybdenum with the remainder being nickel and inevitable impurities, having an alloy composition including 12 to 25 percent by mass of Co, 10 to 18 percent by mass of Cr, 2.0 to 3.6 percent by mass of Al, 0.01 to 0.15 percent by mass of C, 0.001 to 0.03 percent by mass of B, the total amount of tungsten and molybdenum being 5.0 to 10 percent by mass.
A welded turbine rotor is structured by joining orbuilding up by welding a second Ni-base alloy to a first Ni-base alloy that a γ' phase solid solution temperature thereof is 900°C or higher and a creep fracture strength at 675°C is 100 MPa or more, and further welding a ferritic steel to the second Ni-base alloy. The second Ni-base alloy is a γ' phase (Ni 3 Al) precipitation strengthening type Ni-base alloy, a γ' phase solid solution temperature thereof is 850°C or lower.

摘要翻译： 本发明在3相析出强化型Ni基合金中提供了热处理能力和焊接性优良的合金，适用于与铁素体钢接合。 此外，本发明提供一种当将耐热温度为675℃以上的析出强化型Ni基合金与铁素体钢接合时，在整个焊接结构上同时具有强度，延展性和韧性的焊接式涡轮转子。 根据本发明的Ni基合金包含钴，铬，铝，碳，硼，至少钨或钼，其余为镍和不可避免的杂质，其合金组成包括12至25质量％的Co ，10〜18质量％的Cr，2.0〜3.6质量％的Al，0.01〜0.15质量％的C，0.001〜0.03质量％的B，钨和钼的总量为5.0〜10质量％ 质量。 焊接的涡轮转子通过将第二Ni基合金焊接到第一Ni基合金上来结合或构造，其中3相固溶温度为900℃以上，675℃下的蠕变断裂强度为 100MPa以上，进一步将铁素体钢焊接到第二Ni基合金。 第二Ni基合金是三相（Ni 3 Al）析出强化型Ni基合金，其3相固溶温度为850℃以下。

公开(公告)号：EP0753704A1

公开(公告)日：1997-01-15

申请号：EP96111206.7

申请日：1996-07-11

申请人： HITACHI, LTD.

发明人： Fukui, Yutaka ,  Kashimura, Tetsuo ,  Kodama, Hideyo ,  Doi, Hiroyuki ,  Hiraga, Ryo

IPC分类号： F23R3/00 ,  C22C38/10

CPC分类号： F23R3/00 ,  C22C38/105 ,  F01D5/288 ,  F02C6/18 ,  F23C2900/03001 ,  Y02T50/671 ,  Y10S60/902

摘要： A cylindrical gas turbine combustor, burning injected fuel and guiding the combustion gas to turbine nozzles 14, is characterized in that a cylindrical portion of the combustor such as combustor liner 15, a transition piece 16, exposed to the combustion gas is made of austenitic Fe base casting alloy, Ni base casting alloy or Co base casting alloy. The gas turbine combustor which has excellent thermal fatigue and long life is obtained. A gas turbine employs the combustor.

摘要翻译： 燃烧喷射燃料并将燃烧气体引导到涡轮喷嘴14的圆柱形燃气轮机燃烧器的特征在于，暴露于燃烧气体的燃烧器衬套15，过渡件16等燃烧器的圆筒部分由奥氏体Fe 基底铸造合金，Ni基铸造合金或Co基铸造合金。 获得具有优异的热疲劳和长寿命的燃气轮机燃烧器。 燃气轮机采用燃烧器。

公开(公告)号：EP0190408A1

公开(公告)日：1986-08-13

申请号：EP85114219.0

申请日：1985-11-07

申请人： HITACHI, LTD.

发明人： Usami, Kenichi ,  Kirihara, Seishin ,  Morimoto, Tadaoki ,  Doi, Hiroyuki ,  Okada, Michiya

IPC分类号： C22C38/40 ,  C10J3/48

CPC分类号： C22C38/40 ,  Y02E20/16 ,  Y10S148/909

摘要： A structural component 17 for a coal gasification system is subjected to a hot gaseous atmosphere, produced by the reaction between coal and a gasifier, such as oxygen, air, steam or hydrogen.
The component should resist sulphide embrittlement, a corroslon form caused by H 2 S at high temperature, and is made of a Cr-Ni-Al-Si alloy steel, consisting essentially of, by weight:


Fe balance, with a minimum of 50%.

公开(公告)号：EP0120704A3

公开(公告)日：1986-07-02

申请号：EP84302072

申请日：1984-03-27

申请人： HITACHI, LTD. ,  BABCOCK-HITACHI KABUSHIKI KAISHA

发明人： Usami, Kenichi ,  Kirihara, Seishin ,  Doi, Hiroyuki ,  Asano, Choichi ,  Sukekawa, Masayuki ,  Sakaguchi, Yasuhide

IPC分类号： F22B37/04 ,  F22B37/10

CPC分类号： B32B15/01 ,  F22B37/04 ,  Y10S122/13 ,  Y10S165/905 ,  Y10T428/12965

摘要： A boiler tube having a double-tube structure constituted by an innertube and an outertube integrated with each other. The innertube is made of an alloy consisting essentially of, by weight, 0.02 to 0.15% of C, 0.5 to 3.5% of Si, not greater than 2% of Mn, 25 to 40% of Ni, 20.5 to 27% of Cr, 0.5 to 3% of Mo, not greater than 1% of Nb and the balance Fe and having a substantially fully austenite structure. The outertube is made of an alloy consisting essentially of, by weight, 0.02 to 0.2% of C, not greaterthan 3.5% of Si, not greaterthan 2% of Mn, 33 to 45% of Ni, 30 to 40% of Cr and the balance Fe and having a substantially fully austenite structure. The innertube made of the alloy having the composition specified above exhibits a high resistance to steam oxidation without any reduction in high-temperature strength even at elevated steam temperature, while the outer tube made of the alloy having the composition specified above exhibits a superior resistance to corrosion by coal combustion gas.

公开(公告)号：EP0120704A2

公开(公告)日：1984-10-03

申请号：EP84302072.8

申请日：1984-03-27

申请人： HITACHI, LTD. ,  BABCOCK-HITACHI KABUSHIKI KAISHA

发明人： Usami, Kenichi ,  Kirihara, Seishin ,  Doi, Hiroyuki ,  Asano, Choichi ,  Sukekawa, Masayuki ,  Sakaguchi, Yasuhide

IPC分类号： F22B37/04 ,  F22B37/10

CPC分类号： B32B15/01 ,  F22B37/04 ,  Y10S122/13 ,  Y10S165/905 ,  Y10T428/12965

摘要： A boiler tube having a double-tube structure constituted by an innertube and an outertube integrated with each other. The innertube is made of an alloy consisting essentially of, by weight, 0.02 to 0.15% of C, 0.5 to 3.5% of Si, not greater than 2% of Mn, 25 to 40% of Ni, 20.5 to 27% of Cr, 0.5 to 3% of Mo, not greater than 1% of Nb and the balance Fe and having a substantially fully austenite structure. The outertube is made of an alloy consisting essentially of, by weight, 0.02 to 0.2% of C, not greaterthan 3.5% of Si, not greaterthan 2% of Mn, 33 to 45% of Ni, 30 to 40% of Cr and the balance Fe and having a substantially fully austenite structure. The innertube made of the alloy having the composition specified above exhibits a high resistance to steam oxidation without any reduction in high-temperature strength even at elevated steam temperature, while the outer tube made of the alloy having the composition specified above exhibits a superior resistance to corrosion by coal combustion gas.

公开(公告)号：EP2722407A2

公开(公告)日：2014-04-23

申请号：EP13189010.5

申请日：2013-10-16

申请人： Hitachi Ltd.

发明人： Oikawa, Shinji ,  Yoda, Hideo ,  Arai, Masahiko ,  Doi, Hiroyuki

IPC分类号： C21D6/00 ,  C21D9/00 ,  C21D1/18 ,  C21D1/26 ,  C22C38/44

CPC分类号： F01D5/28 ,  C21D1/18 ,  C21D1/26 ,  C21D6/004 ,  C21D9/0068 ,  C21D2211/004 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/06 ,  C22C38/44

摘要： A precipitation hardening martensitic stainless steel is provided with excellent mechanical property and corrosion resistance and contains, by mass, 0.1% or less of C; 0.1% or less of N; 10.0% ~ 15.0% of Cr; 10.0% ~ 15.0% of Ni; 0.5% ~ 2.5% of Mo; 1.0% ~ 3.0% of Al; 1.0% or less of Si; 1.0% or less of Mn, and the rest is Fe and inevitable impurities. A steam turbine long blade (10) is made of the precipitation hardening martensitic stainless steel.

摘要翻译： 沉淀硬化马氏体不锈钢具有优异的机械性能和耐腐蚀性，并且质量含有0.1％以下的C; 0.1％以下的N; 10.0％〜15.0％的Cr; 10.0％〜15.0％的Ni; 0.5％〜2.5％的Mo; 1.0％〜3.0％的Al; 1.0％以下的Si; 1.0％以下的Mn，其余为Fe和不可避免的杂质。 蒸汽轮机长叶片（10）由沉淀硬化马氏体不锈钢制成。

公开(公告)号：EP2584149A2

公开(公告)日：2013-04-24

申请号：EP12188808.5

申请日：2012-10-17

申请人： Hitachi Ltd.

发明人： Arai, Masahiko ,  Doi, Hiroyuki ,  Yoda, Hideo ,  Tanaka, Katsumi

IPC分类号： F01D5/28 ,  B23P15/04

CPC分类号： F01D5/288 ,  B23K15/0006 ,  B23K15/0093 ,  B23K2201/001 ,  F01D5/28 ,  F05D2230/233 ,  F05D2300/11 ,  F05D2300/17

摘要： Disclosed is a turbine blade including a turbine blade substrate (63) including an iron-base alloy; an erosion shield plate (61) including a Co-base alloy; and a shim (62) including a Ni-Fe alloy, in which the erosion shield plate (61) is fixed to a leading edge of the turbine blade substrate (63) with the shim (62) therebetween by an electron beam welding. Thus, a turbine blade having a highly reliable, bonded portion of an erosion shield, and a turbine rotor and a steam turbine using the turbine blade are provided.

摘要翻译： 公开了一种涡轮叶片，其包括具有铁基合金的涡轮叶片基板（63） 包括Co基合金的侵蚀屏蔽板（61） 以及包括Ni-Fe合金的垫片（62），其中通过电子束焊接其中垫片（62）将侵蚀屏蔽板（61）固定到涡轮叶片基板（63）的前缘。 因此，提供了具有高度可靠的防腐蚀屏蔽部分的涡轮叶片，以及使用涡轮叶片的涡轮机转子和蒸汽轮机。

公开(公告)号：EP2455496A1

公开(公告)日：2012-05-23

申请号：EP11188417.7

申请日：2011-11-09

申请人： Hitachi, Ltd.

发明人： Oikawa, Shinji ,  Yoda, Hideo ,  Arai, Masahiko ,  Doi, Hiroyuki

IPC分类号： C21D6/00 ,  C21D6/02 ,  C21D9/00 ,  C22C38/18 ,  C22C38/40 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/60

CPC分类号： C22C38/18 ,  C21D6/00 ,  C21D6/004 ,  C21D6/02 ,  C21D9/0068 ,  C21D2211/008 ,  C22C38/40 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/60

摘要： It is an objective of the present invention to provide a precipitation-hardening martensitic stainless steel having well-balanced properties of high mechanical strength, high toughness and good corrosion resistance properties. There is provided a precipitation-hardening martensitic stainless steel comprising: 0.10 mass% or less of C; 13.0 to 15.0 mass% of Cr; 7.0 to 10.0 mass% of Ni; 2.0 to 3.0 mass% of Mo; 0.5 to 2.5 mass% of Ti; 0.5 to 2.5 mass% of Al; 0.5 mass% or less of Si; 0.1 to 1.0 mass% of Mn; and the balance including Fe and incidental impurities, in which the mass% content of the Ti (represented by [Ti content]), the mass% content of the Al (represented by [Al content]) and the mass% content of the C (represented by [C content]) satisfy relationships of "0.5 ≤ [Ti content] ≤ 2.5" and "0.5 ≤ [Al content] + 2[C content] ≤ 2.7".

摘要翻译： 本发明的目的是提供具有高机械强度，高韧性和良好耐腐蚀性能的均衡性能的沉淀硬化马氏体不锈钢。 提供了一种沉淀硬化马氏体不锈钢，其包含：0.10质量％以下的C; 13.0〜15.0质量％的Cr; 7.0〜10.0质量％的Ni; 2.0〜3.0质量％的Mo; 0.5〜2.5质量％的Ti; 0.5〜2.5质量％的Al; 0.5质量％以下的Si; 0.1〜1.0质量％的Mn; 余量包括Fe和偶氮杂质，其中Ti（以[Ti含量]表示）的质量％含量，Al（由[Al含量]表示）的质量％含量和C的质量％含量 （由[C含量表示]）满足“0.5‰¤[Ti含量]‰¤2.5”和“0.5‰[Al含量] + 2 [C含量]‰¤2.7”的关系。

公开(公告)号：EP2305952A3

公开(公告)日：2012-01-18

申请号：EP10172758.4

申请日：2010-08-13

申请人： Hitachi Ltd.

发明人： Imano, Shinya ,  Doi, Hiroyuki ,  Sato, Jun

IPC分类号： F01D5/06 ,  B23K9/00

CPC分类号： B23K31/02 ,  B23K2201/001 ,  B23K2203/18 ,  B23K2203/26 ,  F01D5/063 ,  F01D5/066 ,  F05C2201/0466 ,  F05D2300/132

摘要： To provide a steam turbine rotor and a steam turbine which are highly reliable.
The steam turbine rotor is characterized in that a forged material B having a hollow structure is joined to a forged material A of a Ni group super-alloy by welding, and weld back waves on an inner surface are removed, and the inner surface is smoothed, and a forging material C and a forging material B are joined to each other with a bolt.

公开(公告)号：EP2305952A2

公开(公告)日：2011-04-06

申请号：EP10172758.4

申请日：2010-08-13

申请人： Hitachi Ltd.

发明人： Imano, Shinya ,  Doi, Hiroyuki ,  Sato, Jun

IPC分类号： F01D5/06 ,  F01D5/28 ,  B23K9/00

CPC分类号： B23K31/02 ,  B23K2201/001 ,  B23K2203/18 ,  B23K2203/26 ,  F01D5/063 ,  F01D5/066 ,  F05C2201/0466 ,  F05D2300/132

摘要： To provide a steam turbine rotor and a steam turbine which are highly reliable.
The steam turbine rotor is characterized in that a forged material B having a hollow structure is joined to a forged material A of a Ni group super-alloy by welding, and weld back waves on an inner surface are removed, and the inner surface is smoothed, and a forging material C and a forging material B are joined to each other with a bolt.

摘要翻译： 提供高可靠性的汽轮机转子和汽轮机。 蒸汽轮机转子的特征在于，具有中空结构的锻造材料B通过焊接与Ni基超合金的锻造材料A接合，并且去除内表面上的焊后反波，并且使内表面平滑 ，并且锻造材料C和锻造材料B通过螺栓彼此接合。