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公开(公告)号:US4414024A
公开(公告)日:1983-11-08
申请号:US411802
申请日:1982-08-26
申请人: Masao Siga , Seishin Kirihara , Mitsuo Kuriyama , Takatoshi Yosioka , Shintaro Takahashi , Takehiko Yoshida
发明人: Masao Siga , Seishin Kirihara , Mitsuo Kuriyama , Takatoshi Yosioka , Shintaro Takahashi , Takehiko Yoshida
CPC分类号: C22C38/22
摘要: This invention discloses martensitic heat-resistant steel consisting essentially of 0.1 to 0.2 wt. % of C, up to 0.4 wt. % of Si, up to 1 wt. % of Mn, 9 to 12 wt. % of Cr, 0.1 to 0.3 wt. % of V, 0.02 to 0.25 wt. % of Nb, 0.03 to 0.1 wt. % of N, up to 1 wt. % of Ni, molybdenum and tungsten in amounts falling within the range encompassed by lines connecting a point A (0.7 wt. % of Mo and 1.1 wt. % of W), a point B (1.2 wt. % of Mo and 1.1 wt. % of W), a point C (1.6 wt. % of Mo and 0.33 wt. % of W) and a point D (0.7 wt. % of Mo and 0.33 and wt. % of W) as shown in FIG. 1 and the balance of iron.The martensitic heat-resistant steel in accordance with the present invention is suitable for use in steam turbine blades and rotor shafts.
摘要翻译: 本发明公开了马氏体耐热钢,其基本上由0.1〜0.2重量% C%,高达0.4wt。 %的Si,高达1wt。 %的Mn,9〜12wt。 Cr%,0.1〜0.3wt。 V%,0.02〜0.25wt。 %的Nb,0.03〜0.1wt。 N%,至多1重量% 位于连接点A(0.7重量%的Mo和1.1重量%的W)的线所包围的范围内的Ni,钼和钨的%,点B(1.2重量%的Mo和1.1重量% W的百分比),点C(1.6重量%的Mo和0.33重量%的W)和点D(0.7重量%的Mo,0.33和W的重量百分比)如图1所示。 1和铁的余量。 根据本发明的马氏体耐热钢适用于汽轮机叶片和转子轴。
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公开(公告)号:US4585478A
公开(公告)日:1986-04-29
申请号:US607288
申请日:1984-05-04
申请人: Takatoshi Yoshioka , Seishin Kirihara , Masao Siga , Mitsuo Kuriyama , Takehiko Yoshida , Takanori Murohoshi
发明人: Takatoshi Yoshioka , Seishin Kirihara , Masao Siga , Mitsuo Kuriyama , Takehiko Yoshida , Takanori Murohoshi
IPC分类号: C22C38/00 , C22C38/32 , C22C38/54 , F01D25/00 , F01D25/24 , C22C38/06 , C22C38/28 , C22C38/50
CPC分类号: C22C38/32
摘要: A heat resisting steel suitable for use as the materials of steam turbine casings of steam turbines for thermal power generation. The steel has a composition consisting essentially of 0.05 to 0.2 wt % of C, 0.5 to 2.0 wt % of Cr, 0.5 to 2.0 wt % of Mo, 0.05 to 0.5 wt % of V, 0.002 to 0.1 wt % of Al, 0.0002 to 0.0030 wt % of B and the balance substantially Fe and inevitable impurities, wherein the sum of X and Al as obtained from the following formulae is not greater than 2920:X=10P+5Sb+4Sn+AsAl=xAl(x being a coefficient obtained from FIG. 4)where, P,Sb,Sn and As represent the contents of P,Sb,Sn and As contained as said inevitable impurities in terms of ppm, while Al represents the Al content in terms of ppm. This heat resisting steel exhibits a large resistance to cracking in stress relief annealing after welding, as well as a high creep rupture strength at high temperature, and shows only a low crack developing speed.
摘要翻译: 适用于火力发电用蒸汽轮机的汽轮机壳体材料的耐热钢。 该钢具有以下组成的组成:C:0.05〜0.2重量%,Cr:0.5〜2.0重量%,Mo:0.5〜2.0重量%,V:0.05〜0.5重量%,Al:0.002〜0.1重量% 0.0030重量%的B,余量基本上为Fe和不可避免的杂质,其中由下列公式得到的<上升& X和& upbar&A的总和不大于2920:X = 10P + 5Sb + 4Sn + As Al = xAl 从图4得到的系数)其中,P,Sb,Sn和As表示作为所述不可避免的杂质含有的P,Sb,Sn和As的含量,以ppm表示,而Al表示以ppm表示的Al含量。 该耐热钢在焊接后的抗应力消除退火中表现出较大的耐龟裂性,并且在高温下具有高的蠕变断裂强度,并且仅显示出低的裂纹显影速度。
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公开(公告)号:US4504554A
公开(公告)日:1985-03-12
申请号:US363493
申请日:1982-03-30
申请人: Takatoshi Yoshioka , Seishin Kirihara , Masao Siga , Takehiko Yoshida , Katsukuni Hisano , Toshimi Tan , Masahiro Kobayashi
发明人: Takatoshi Yoshioka , Seishin Kirihara , Masao Siga , Takehiko Yoshida , Katsukuni Hisano , Toshimi Tan , Masahiro Kobayashi
CPC分类号: F01D5/06 , F16C3/02 , F16C33/14 , F16C17/02 , F16C2220/24 , F16C2223/46 , Y10T428/12965 , Y10T428/12972
摘要: A steam turbine rotor shaft comprising the main body of the rotor shaft made of a high Cr steel of martensite structure, and a journal having a plurality of built-up welding layers formed successively said main body, the outer surface portion of the journal being made of steel containing 0.5 to 3 wt % of Cr, and a method of producing same.
摘要翻译: 一种蒸汽涡轮机转子轴,包括由马氏体组织的高Cr钢制成的转子轴的主体,以及具有连续形成的多个积层焊接层的轴颈,所述轴颈的外表面部分被制成 的含有0.5〜3重量%的Cr的钢及其制造方法。
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公开(公告)号:US06224334B1
公开(公告)日:2001-05-01
申请号:US08780441
申请日:1997-01-08
申请人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Yoshimi Maeno , Masateru Suwa , Ryoichi Kaneko , Takeshi Onoda , Hidefumi Kajiwara , Yasuo Watanabe , Shintaro Takahashi , Toshimi Tan
发明人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Yoshimi Maeno , Masateru Suwa , Ryoichi Kaneko , Takeshi Onoda , Hidefumi Kajiwara , Yasuo Watanabe , Shintaro Takahashi , Toshimi Tan
IPC分类号: F01D528
CPC分类号: F01D5/147 , C21D9/38 , C21D2211/002 , C22C38/44 , C22C38/46 , C22C38/48 , F01D5/02 , F01D5/06 , F01D5/141 , F01D5/28 , F01D5/288 , F05D2300/133 , F05D2300/171
摘要: A steam turbine comprising a rotor shaft integrating high and low pressure portions provided with blades at the final stage thereof having a length not less than 30 inches, wherein a steam temperature at first stage blades is 530° C., a ratio (L/D) of a length (L) defined between bearings of the rotor shaft to a diameter (D) measured between the terminal ends of final stage blades is 1.4 to 2.3. This rotor shaft is composed of heat resisting steel containing by weight 0.15 to 0.4% C, not more than 0.1% Si, 0.05 to 0.25% Mn, 1.5 to 2.5% Ni, 0.8 to 2.5% Cr, 0.8 to 2.5% Mo and 0.15 to 0.35% V and, further, the heat resisting steel may contain at least one of Nb, Ta, W, Ti, Al, Zr, B, Ca, and rare earth elements.
摘要翻译: 一种蒸汽轮机,包括集成高压部分和低压部分的转子轴,所述转子轴在其最后阶段具有不小于30英寸的长度,其中第一级叶片处的蒸汽温度为530℃,比率(L / D 限定在转子轴的轴承之间的长度(L)与在最终级叶片的末端之间测量的直径(D)为1.4至2.3。 该转子轴由含有0.15〜0.4%C,0.1%以下的Si,0.05〜0.25%的Mn,1.5〜2.5%的Ni,0.8〜2.5%的Cr,0.8〜2.5%的Mo和0.15重量的耐热钢构成。 至0.35%V,此外,耐热钢可以含有Nb,Ta,W,Ti,Al,Zr,B,Ca和稀土元素中的至少一种。
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公开(公告)号:US5536146A
公开(公告)日:1996-07-16
申请号:US305186
申请日:1994-09-13
申请人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Yoshimi Maeno , Masateru Suwa , Ryoichi Kaneko , Takeshi Onoda , Hidefumi Kajiwara , Yasuo Watanabe , Shintaro Takahashi , Toshimi Tan
发明人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Yoshimi Maeno , Masateru Suwa , Ryoichi Kaneko , Takeshi Onoda , Hidefumi Kajiwara , Yasuo Watanabe , Shintaro Takahashi , Toshimi Tan
IPC分类号: C21D9/38 , C22C38/44 , C22C38/46 , C22C38/48 , F01D5/02 , F01D5/06 , F01D5/14 , F01D5/28 , F01D7/00
CPC分类号: F01D5/147 , C21D9/38 , C22C38/44 , C22C38/46 , C22C38/48 , F01D5/02 , F01D5/06 , F01D5/141 , F01D5/28 , F01D5/288 , C21D2211/002 , F05D2300/133 , F05D2300/171
摘要: The present invention relates to a steam turbine comprising a rotor shaft integrating high and low pressure portions provided with blades at the final stage thereof having a length not less than 30 inches, wherein a steam temperature at first stage blades is 530.degree. C., a ratio (L/D) of a length (L) defined between bearings of the rotor shaft to a diameter (D) measured between the terminal ends of final stage blades is 1.4 to 2.3. This rotor shaft is composed of heat resisting steel containing by weight 0.15 to 0.4% C, not more than 0.1% Si, 0.05 to 0.25% Mn, 1.5 to 2.5% Ni, 0.8 to 2.5% Cr, 0.8 to 2.5% Mo and 0.15 to 0.35% V and, further, the heat resisting steel may contain at least one of Nb, Ta, W, Ti, Al, Zr, B, Ca, and rare earth elements.
摘要翻译: 汽轮机技术领域本发明涉及一种蒸汽涡轮机,其特征在于,包括转子轴,该转子轴在其最后阶段集成有高压部分和低压部分,叶片长度不小于30英寸,其中第一级叶片的蒸汽温度为530℃, 在转子轴的轴承之间限定的长度(L)与最终级叶片的末端之间测量的直径(D)的比(L / D)为1.4至2.3。 该转子轴由含有0.15〜0.4%C,0.1%以下的Si,0.05〜0.25%的Mn,1.5〜2.5%的Ni,0.8〜2.5%的Cr,0.8〜2.5%的Mo和0.15重量的耐热钢构成。 至0.35%V,此外,耐热钢可以含有Nb,Ta,W,Ti,Al,Zr,B,Ca和稀土元素中的至少一种。
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公开(公告)号:US5008072A
公开(公告)日:1991-04-16
申请号:US352472
申请日:1989-05-16
申请人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Soichi Kurosawa , Katsumi Iijima , Nobuyuki Iizuka , Yosimi Maeno , Shintaro Takahashi , Yasuo Watanabe , Ryo Hiraga
发明人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Soichi Kurosawa , Katsumi Iijima , Nobuyuki Iizuka , Yosimi Maeno , Shintaro Takahashi , Yasuo Watanabe , Ryo Hiraga
CPC分类号: C22C38/46 , C22C38/44 , Y10S60/909
摘要: A heat resistant steel of the present invention contains 0.05 to 0.2 wt. % of C, less than 0.5 wt. % of Si, less than 0.6 wt. % of Mn, 8 to 13 wt. % of Cr, 1.5 to 3 wt. % of Mo, 2 to 3 wt. % of Ni, 0.05 to 0.3 wt. % of V, 0.02 to 0.2 wt. % in total of either or both of Nb and Ta, 0.02 to 0.1 wt. % of N and the balance substantially Fe. Since a gas turbine of the present invention is constituted by members, such as discs, blades, shafts and so forth, made of alloys of this kind, the gas turbine has a structure in which it is possible to achieve a high level of creep rupture strength and Charpy impact value.
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公开(公告)号:US5624235A
公开(公告)日:1997-04-29
申请号:US530960
申请日:1995-09-20
申请人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Yoshimi Maeno , Masateru Suwa , Ryoichi Kaneko , Takeshi Onoda , Hidefumi Kajiwara , Yasuo Watanabe , Shintaro Takahashi , Toshimi Tan
发明人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Yoshimi Maeno , Masateru Suwa , Ryoichi Kaneko , Takeshi Onoda , Hidefumi Kajiwara , Yasuo Watanabe , Shintaro Takahashi , Toshimi Tan
CPC分类号: F01D5/147 , C21D9/38 , C22C38/44 , C22C38/46 , C22C38/48 , F01D5/02 , F01D5/06 , F01D5/141 , F01D5/28 , F01D5/288 , C21D2211/002 , F05D2300/133 , F05D2300/171
摘要: The present invention relates to a steam turbine comprising a rotor shaft integrating high and low pressure portions provided with blades at the final stage thereof having a length not less than 30 inches, wherein a steam temperature at first stage blades is 530.degree. C., a ratio (L/D) of a length (L) defined between bearings of the rotor shaft to a diameter (D) measured between the terminal ends of final stage blades is 1.4 to 2.3. This rotor shaft is composed of heat resisting steel containing by weight 0.15 to 0.4 % C, not more than 0.1 % Si, 0.05 to 0.25 % Mn, 1.5 to 2.5 % Ni, 0.8 to 2.5 % Cr, 0.8 to 2.5 % Mo and 0.15 to 0.35 % V and, further, the heat resisting steel may contain at least one of Nb, Ta, W, Ti, Al, Zr, B, Ca, and rare earth elements.
摘要翻译: 汽轮机技术领域本发明涉及一种蒸汽涡轮机,其特征在于,包括转子轴,该转子轴在其最后阶段集成有高压部分和低压部分,叶片长度不小于30英寸,其中第一级叶片的蒸汽温度为530℃, 在转子轴的轴承之间限定的长度(L)与最终级叶片的末端之间测量的直径(D)的比(L / D)为1.4至2.3。 该转子轴由含有0.15〜0.4%C,0.1%以下的Si,0.05〜0.25%的Mn,1.5〜2.5%的Ni,0.8〜2.5%的Cr,0.8〜2.5%的Mo和0.15重量的耐热钢构成。 至0.35%V,此外,耐热钢可以含有Nb,Ta,W,Ti,Al,Zr,B,Ca和稀土元素中的至少一种。
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公开(公告)号:US4850187A
公开(公告)日:1989-07-25
申请号:US010793
申请日:1987-02-04
申请人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Soichi Kurosawa , Katsumi Iijima , Nobuyuki Iizuka , Yosimi Maeno , Shintaro Takahashi , Yasuo Watanabe , Ryo Hiraga
发明人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Soichi Kurosawa , Katsumi Iijima , Nobuyuki Iizuka , Yosimi Maeno , Shintaro Takahashi , Yasuo Watanabe , Ryo Hiraga
CPC分类号: C22C38/46 , C22C38/44 , Y10S60/909
摘要: A heat resistant steel of the present invention contains 0.05 to 0.2 wt. % of C, less than 0.5 wt. % of Si, less than 0.6 wt. % of Mn, 8 to 13 wt. % of Cr, 1.5 to 3 wt. % of Mo, 2 to 3 wt. % of Ni, 0.05 to 0.3 wt. % of V, 0.02 to 0.2 wt. % in total of either or both of Nb and Ta, 0.02 to 0.1 wt. % of N and the balance substantially Fe. Since a gas turbine of the present invention is constituted by members, such as discs, blades, shafts and so forth, made of alloys of this kind, the gas turbine has a structure in which it is possible to achieve a high level of creep rupture strength and Charpy impact value.
摘要翻译: 本发明的耐热钢含有0.05〜0.2重量% %的C,小于0.5wt。 Si%,小于0.6wt。 %的Mn,8〜13wt。 Cr%,1.5〜3wt。 %的Mo,2〜3wt。 Ni的比例为0.05〜0.3wt。 V%,0.02〜0.2重量% Nb和Ta中的任一个或两者的总和为0.02〜0.1重量%。 N%,余量基本上为Fe。 由于本发明的燃气轮机由这种合金构成的诸如盘,叶片,轴等的构件构成,所以燃气轮机具有能够实现高水平的蠕变断裂的结构 强度和夏比冲击值。
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公开(公告)号:US5569338A
公开(公告)日:1996-10-29
申请号:US461521
申请日:1995-06-05
申请人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Yoshimi Maeno , Masateru Suwa , Ryoichi Kaneko , Takeshi Onoda , Hidefumi Kajiwara , Yasuo Watanabe , Shintaro Takahashi , Toshimi Tan
发明人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Yoshimi Maeno , Masateru Suwa , Ryoichi Kaneko , Takeshi Onoda , Hidefumi Kajiwara , Yasuo Watanabe , Shintaro Takahashi , Toshimi Tan
IPC分类号: C21D9/38 , C22C38/44 , C22C38/46 , C22C38/48 , F01D5/02 , F01D5/06 , F01D5/14 , F01D5/28 , C21D9/00
CPC分类号: F01D5/147 , C21D9/38 , C22C38/44 , C22C38/46 , C22C38/48 , F01D5/02 , F01D5/06 , F01D5/141 , F01D5/28 , F01D5/288 , C21D2211/002 , F05D2300/133 , F05D2300/171
摘要: The present invention relates to a steam turbine comprising a rotor shaft integrating high and low pressure portions provided with blades at the final stage thereof having a length not less than 30 inches, wherein a steam temperature at first stage blades is 530.degree. C., a ratio (L/D) of a length (L) defined between bearings of the rotor shaft to a diameter (D) measured between the terminal ends of final stage blades is 1.4 to 2.3. This rotor shaft is composed of heat resisting steel containing by weight 0.15 to 0.4% C, not more than 0.1% Si, 0.05 to 0.25% Mn, 1.5 to 2.5% Ni, 0.8 to 2.5% Cr, 0.8 to 2.5% Mo and 0.15 to 0.35% V and, further, the heat resisting steel may contain at least one of Nb, Ta, W, Ti, Al, Zr, B, Ca, and rare earth elements.
摘要翻译: 汽轮机技术领域本发明涉及一种蒸汽涡轮机,其特征在于,包括转子轴,该转子轴在其最后阶段集成有高压部分和低压部分,叶片长度不小于30英寸,其中第一级叶片的蒸汽温度为530℃, 在转子轴的轴承之间限定的长度(L)与最终级叶片的末端之间测量的直径(D)的比(L / D)为1.4至2.3。 该转子轴由含有0.15〜0.4%C,0.1%以下的Si,0.05〜0.25%的Mn,1.5〜2.5%的Ni,0.8〜2.5%的Cr,0.8〜2.5%的Mo和0.15重量的耐热钢构成。 至0.35%V,此外,耐热钢可以含有Nb,Ta,W,Ti,Al,Zr,B,Ca和稀土元素中的至少一种。
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公开(公告)号:US5383768A
公开(公告)日:1995-01-24
申请号:US893079
申请日:1992-06-03
申请人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Yoshimi Maeno , Masateru Suwa , Ryoichi Kaneko , Takeshi Onoda , Hidefumi Kajiwara , Yasuo Watanabe , Shintaro Takahashi , Toshimi Tan
发明人: Masao Siga , Yutaka Fukui , Mitsuo Kuriyama , Yoshimi Maeno , Masateru Suwa , Ryoichi Kaneko , Takeshi Onoda , Hidefumi Kajiwara , Yasuo Watanabe , Shintaro Takahashi , Toshimi Tan
CPC分类号: F01D5/147 , C21D9/38 , C22C38/44 , C22C38/46 , C22C38/48 , F01D5/02 , F01D5/06 , F01D5/141 , F01D5/28 , F01D5/288 , C21D2211/002 , F05D2300/133 , F05D2300/171
摘要: The present invention relates to a steam turbine comprising a rotor shaft integrating high and low pressure portions provided with blades at the final stage thereof having a length not less than 30 inches, wherein a steam temperature at first stage blades is 530.degree. C., a ratio (L/D) of a length (L) defined between bearings of the rotor shaft to a diameter (D) measured between the terminal ends of final stage blades is 1.4 to 2.3. This rotor shaft is composed of heat resisting steel containing by weight 0.15 to 0.4% C, not more than 0.1% Si, 0.05 to 0.25% Mn, 1.5 to 2.5% Ni, 0.8 to 2.5% Cr, 0.8 to 2.5% Mo and 0.15 to 0.35% V and, further, the heat resisting steel may contain at least one of Nb, Ta, W, Ti, Al, Zr, B, Ca, and rare earth elements.
摘要翻译: 汽轮机技术领域本发明涉及一种蒸汽涡轮机,其特征在于,包括转子轴,该转子轴在其最后阶段集成有高压部分和低压部分,叶片长度不小于30英寸,其中第一级叶片的蒸汽温度为530℃, 在转子轴的轴承之间限定的长度(L)与最终级叶片的末端之间测量的直径(D)的比(L / D)为1.4至2.3。 该转子轴由含有0.15〜0.4%C,0.1%以下的Si,0.05〜0.25%的Mn,1.5〜2.5%的Ni,0.8〜2.5%的Cr,0.8〜2.5%的Mo和0.15重量的耐热钢构成。 至0.35%V,此外,耐热钢可以含有Nb,Ta,W,Ti,Al,Zr,B,Ca和稀土元素中的至少一种。
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