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    Martensitic heat-resistant steel
    1.
    发明授权
    Martensitic heat-resistant steel 失效
    马氏体耐热钢

    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

    IPC分类号： C22C38/00 ,  C22C38/22

    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。

    Heat resisting steel
    2.
    发明授权
    Heat resisting steel 失效
    耐热钢

    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＆lt;上升＆amp; X和＆amp; 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。

    Rotor shaft and manufacturing method thereof
    4.
    发明授权
    Rotor shaft and manufacturing method thereof 失效
    转子轴及其制造方法

    公开(公告)号：US4497670A

    公开(公告)日：1985-02-05

    申请号：US463854

    申请日：1983-02-04

    申请人： Masao Siga ,  Seishin Kirihara ,  Takatoshi Yoshioka ,  Katsukuni Hisano ,  Toshimi Tan ,  Yoji Akutsu ,  Kei Kobayashi

    发明人： Masao Siga ,  Seishin Kirihara ,  Takatoshi Yoshioka ,  Katsukuni Hisano ,  Toshimi Tan ,  Yoji Akutsu ,  Kei Kobayashi

    IPC分类号： F01D5/06 ,  B23P11/02 ,  C21D9/14 ,  C21D9/38 ,  F01D25/16 ,  C21D9/28

    CPC分类号： C21D9/14 ,  B23P11/02 ,  C21D9/38 ,  F16C35/02

    摘要： A rotor shaft for steam turbines has a journal portion to be supported by a bearing. The journal portion is provided with a sleeve for a bearing made of an alloy of bainite structure comprising 0.04 to 0.35% C, 0.2 to 2% Mn, less than 1% Si, 0.5 to 3% Cr, less than 5% Ni, and less than 0.5% V, having yield strength of more than 50 kg/mm.sup.2 and Lt of less than 24. The sleeve is divided into two semicylindrical segments, and they are arranged on a small diameter portion of the shaft adjacent to said journal portion, welded into one piece, and subjected to stress relief treatment at a temperature higher than a temperature of tempering conducted to the sleeve before welding. The welded sleeve is fitted on the journal portion by shrink-fit so that the sleeve can be served as a superior bearing.

    摘要翻译： 用于蒸汽轮机的转子轴具有由轴承支撑的轴颈部分。 轴颈部分设有用于由贝氏体组织合金制成的轴承套筒，该套筒包括0.04-0.35％的C，0.2到2％的Mn，小于1％的Si，0.5到3％的Cr，小于5％的Ni，以及 屈服强度大于50kg / mm2，Lt小于24.套筒被分成两个半圆柱形部分，并且它们布置在与所述轴颈部分相邻的轴的小直径部分上， 焊接成一体，在比焊接前对套筒进行回火温度高的温度下进行应力消除处理。 焊接套管通过收缩配合安装在轴颈部分上，使得套筒可以作为优越的轴承。

    Heat resisting steel
    5.
    发明授权
    Heat resisting steel 失效
    耐热钢

    公开(公告)号：US4477280A

    公开(公告)日：1984-10-16

    申请号：US452292

    申请日：1982-12-22

    申请人： Masao Shiga ,  Seishin Kirihara ,  Mitsuo Kuriyama ,  Takatoshi Yoshioka ,  Ryoichi Sasaki

    发明人： Masao Shiga ,  Seishin Kirihara ,  Mitsuo Kuriyama ,  Takatoshi Yoshioka ,  Ryoichi Sasaki

    IPC分类号： C22C38/00 ,  C22C38/22 ,  C22C38/48 ,  F01D5/02 ,  F01D5/28 ,  C22C38/06

    CPC分类号： C22C38/22

    摘要： A heat resisting steel suitable for use as material of steam turbine parts. The steel has a substantially whole tempered martensite structure and consisting essentially of, by weight, 8 to 13% of Cr, 0.5 to 2% of Mo, 0.02 to 0.5% of V, 0.02 to 0.15% of Nb, 0.025 to 0.1% of N, 0.05 to 0.25% of C, not greater than 0.6% of Si, not greater than 1.5% of Mn, not greater than 1.5% of Ni, 0.0005 to 0.02% of Al, 0.1 to 0.5% of W and the balance substantially Fe, the ratio W/Al between W content and Al content ranging between 10 and 110.

    摘要翻译： 适用于汽轮机部件材料的耐热钢。 该钢具有基本上整个回火的马氏体结构，并且基本上由以下组成：Cr：8〜13％，Mo：0.5〜2％，V：0.02〜0.5％，Nb：0.02〜0.15％，Nb：0.02〜 N，0.05〜0.25％的C，不大于0.6％的Si，不大于Mn的1.5％，不大于1.5的Ni，0.0005至0.02％的Al，0.1至0.5％的W，余量基本上 Fe，W含量和Al含量之间的W / Al比在10和110之间。

    Boiler tube
    6.
    发明授权
    Boiler tube 失效
    锅炉管

    公开(公告)号：US4505232A

    公开(公告)日：1985-03-19

    申请号：US593931

    申请日：1984-03-27

    申请人： Kenichi Usami ,  Seishin Kirihara ,  Hiroyuki Doi ,  Choichi Asano ,  Masayuki Sukekawa ,  Yasuhide Sakaguchi

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

    IPC分类号： B32B15/01 ,  C22C38/00 ,  C22C38/54 ,  F22B37/04 ,  F22B37/06

    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 inner tube and an outer tube integrated with each other. The inner tube 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 outer tube is made of an alloy consisting essentially of, by weight, 0.02 to 0.2% of C, not greater than 3.5% of Si, not greater than 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 inner tube 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.

    摘要翻译： 一种具有由内管和彼此一体化的外管构成的双管结构的锅炉管。 内管由以下组成的合金制成，该合金主要由C：0.02〜0.15％，Si：0.5〜3.5％，Mn：2％以下，Ni：25〜40％，Cr：20.5〜27％ ，0.5〜3％的Mo，不大于1％的Nb，余量为Fe，并具有基本上完全奥氏体的结构。 外管由以下组成的合金制成，该合金主要由以下组成：C：0.02〜0.2％，Si：3.5％以下，Mn：2％以下，Ni：33〜45％，Ni：30〜40％ Cr和余量Fe并具有基本上完全奥氏体的结构。 由具有上述组成的合金制成的内管即使在升高的蒸汽温度下也具有高的耐蒸汽氧化性，而不会降低高温强度，而由具有上述组成的合金制成的外管显示出优异的电阻 由煤燃烧气体腐蚀。

    High-strength austenitic steel
    8.
    发明授权
    High-strength austenitic steel 失效
    高强度奥氏体钢

    公开(公告)号：US4581067A

    公开(公告)日：1986-04-08

    申请号：US547573

    申请日：1983-11-01

    申请人： Katsumi Iijima ,  Norio Yamada ,  Seishin Kirihara ,  Masao Shiga ,  Masayuki Sukekawa ,  Takatoshi Yoshioka ,  Kiyoshi Hiyama

    发明人： Katsumi Iijima ,  Norio Yamada ,  Seishin Kirihara ,  Masao Shiga ,  Masayuki Sukekawa ,  Takatoshi Yoshioka ,  Kiyoshi Hiyama

    IPC分类号： C22C38/00 ,  C22C38/48 ,  C22C38/58 ,  F01D1/00 ,  F01D17/10 ,  F01D25/24 ,  C22C38/06

    CPC分类号： C22C38/001 ,  C22C38/58

    摘要： A high-strength austenitic steel having a fully austenite structure and consisting essentially of 0.02 to 0.15 wt % of C, not greater than 1.5 wt % of Si, not greater than 2.5 wt % of Mn, 8 to 20 wt % of Ni, 13 to 25 wt % of Cr, 0.02 to 0.25 wt % of Al, not greater than 0.1 wt % of N, at least one of 0.001 to 0.01 wt % of B, 0.02 to 0.5 wt % of Nb, 0.01 to 0.2 wt % of Ti and 0.02 to 0.6 wt % of V and the balance substantialy Fe, with the weight ratio (Al/N) ranging between 1 and 4.5. This steel is suitable for use as the material of, for example, inner casing of steam turbine, valve body incorporated in the steam turbine, rotor shaft, and chemical equipment such as reaction pipe and vessel for styrene monomer producing facility.

    摘要翻译： 具有完全奥氏体组织的高强奥氏体钢，主要由C：0.02〜0.15重量％，Si：1.5重量％以下，Mn：2.5重量％以下，Ni：8〜20重量％，13 至25重量％的Cr，0.02-0.25重量％的Al，不大于0.1重量％的N，0.001至0.01重量％的B，0.02至0.5重量％的Nb，0.01至0.2重量％的Nb， Ti和0.02〜0.6重量％的V，余量基本上为Fe，重量比（Al / N）为1〜4.5。 该钢适用于汽轮机的内壳，汽轮机内的阀体，转子轴，苯乙烯单体生产设备的反应管，容器等的化学设备。

    Welded structure having improved mechanical strength and process for making same
    9.
    发明授权
    Welded structure having improved mechanical strength and process for making same 失效
    具有改善机械强度的焊接结构及其制造方法

    公开(公告)号：US4348131A

    公开(公告)日：1982-09-07

    申请号：US147329

    申请日：1980-05-06

    申请人： Shizuka Shimanuki ,  Toshimi Matsumoto ,  Hiroshi Sato ,  Tsutomu Onuma ,  Seishin Kirihara

    发明人： Shizuka Shimanuki ,  Toshimi Matsumoto ,  Hiroshi Sato ,  Tsutomu Onuma ,  Seishin Kirihara

    IPC分类号： B23K9/00 ,  B23K9/23 ,  B23K33/00 ,  C21D9/50

    CPC分类号： C21D9/50 ,  B23K9/23 ,  C21D2251/00 ,  Y10T403/21 ,  Y10T403/257 ,  Y10T403/478 ,  Y10T403/479

    摘要： A welded structure and a method for making same wherein a plurality of weld metals, such as martensitic steel and austenitic steel, differing in coefficient of thermal expansion from each other are deposited in a plurality of layers thicknesswise of the welded structure in a gap defined by structural members to be welded in such a manner that a layer of the weld metal of higher coefficient of thermal expansion is covered by a layer of the weld metal of lower coefficient of thermal expansion in a weld formed, to improve brittle fracture strength, fatigue strength and stress corrosion cracking resistance of the weld. By subjecting the welded structure to stress relief annealing treatment, it is possible to produce compressive stress on the surface of the layer of the weld metal of lower coefficient of thermal expansion.

    摘要翻译： 一种焊接结构及其制造方法，其特征在于，在焊接结构的厚度方向上以多个等级彼此不同的热电偶热膨胀系数的焊接金属（例如马氏体钢和奥氏体钢）以由 要焊接的结构构件，使得具有较高热膨胀系数的焊接金属层被形成的焊接中的热膨胀系数较低的焊接金属层覆盖，以提高脆性断裂强度，疲劳强度 和焊缝的抗应力腐蚀开裂性。 通过对焊接结构进行应力消除退火处理，可以在较低的热膨胀系数的焊接金属层的表面产生压应力。