Ni-base alloy, high-temperature member for steam turbine and welded rotor for turbine using the same, and method for manufacturing the same
    2.
    发明授权
    Ni-base alloy, high-temperature member for steam turbine and welded rotor for turbine using the same, and method for manufacturing the same 有权
    镍基合金,蒸汽轮机的高温部件和使用其的涡轮机的焊接转子及其制造方法

    公开(公告)号:US08883072B2

    公开(公告)日:2014-11-11

    申请号:US12551884

    申请日:2009-09-01

    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 or building 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 (Ni3Al) 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γ-相析出强化型Ni基合金中提供了热处理能力和焊接性优异的合金,适用于与铁素体钢接合的合金。 此外,本发明提供了一种在整个焊接结构中具有强度,延展性和韧性的焊接式涡轮转子,当耐热温度为675℃以上的析出强化型Ni基合金与铁素体钢 。 根据本发明的镍基合金包含钴,铬,铝,碳,硼,以及至少钨或钼,其余为镍和不可避免的杂质,其合金组成包含12〜25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γ'相固相温度为900℃以上的第一Ni基合金和675°的蠕变断裂强度下, C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γ'相(Ni3Al)析出强化型Ni基合金,γ'相固溶温度为850℃以下。

    Nickel base wrought alloy
    3.
    发明授权
    Nickel base wrought alloy 有权
    镍基锻造合金

    公开(公告)号:US08524149B2

    公开(公告)日:2013-09-03

    申请号:US12728292

    申请日:2010-03-22

    IPC分类号: C22C19/05 C22C30/00

    CPC分类号: C22C19/055

    摘要: A nickel base alloy includes: by mass, 0.001 to 0.1% of carbon; 12 to 23% of chromium; 15 to 25% of cobalt; 3.5 to 5.0% of aluminum; 4 to 12% of molybdenum; 0.1 to 7.0% of tungsten; and a total amount of Ti, Ta and Nb being not more than 0.5%. A parameter Ps represented by a formula (1) shown below is 0.6 to 1.6, Ps=−7×[C]−0.1×[Mo]+0.5×[Al]  (1) where [C] indicates an amount of carbon; [Mo] indicates an amount of molybdenum; and [Al] indicates an amount of aluminum, by mass percent.

    摘要翻译: 镍基合金包括:质量计,0.001〜0.1%的碳; 12〜23%的铬; 15〜25%的钴; 3.5〜5.0%的铝; 4〜12%的钼; 0.1〜7.0%的钨; Ti,Ta和Nb的总量不大于0.5%。 由下式(1)表示的参数Ps为0.6〜1.6,Ps = -7×[C] -0.1×[Mo] + 0.5×[Al](1)其中,[C]表示碳数; [Mo]表示钼的量; 和[Al]表示铝的质量%。

    Low-thermal-expansion Ni-based super-heat-resistant alloy for boiler and having excellent high-temperature strength, and boiler component and boiler component production method using the same
    5.
    发明授权
    Low-thermal-expansion Ni-based super-heat-resistant alloy for boiler and having excellent high-temperature strength, and boiler component and boiler component production method using the same 有权
    用于锅炉的低热膨胀Ni基超耐热合金并具有优异的高温强度,以及使用其的锅炉部件和锅炉部件生产方法

    公开(公告)号:US08444778B2

    公开(公告)日:2013-05-21

    申请号:US12675688

    申请日:2008-08-29

    IPC分类号: C22C19/05 C22F1/10

    摘要: Disclosed is a low-thermal-expansion Ni-based super-heat-resistant alloy for a boiler, which has excellent high-temperature strength. The alloy can be welded without the need of carrying out any aging treatment. The alloy has a Vickers hardness value of 240 or less. The alloy comprises (by mass) C in an amount of 0.2% or less, Si in an amount of 0.5% or less, Mn in an amount of 0.5% or less, Cr in an amount of 10 to 24%, one or both of Mo and W in such an amount satisfying the following formula: Mo+0.5 W=5 to 17%, Al in an amount of 0.5 to 2.0%, Ti in an amount of 1.0 to 3.0%, Fe in an amount of 10% or less, and one or both of B and Zr in an amount of 0.02% or less (excluding 0%) for B and in an amount of 0.2% or less (excluding 0%) for Zr, with the remainder being 48 to 78% of Ni and unavoidable impurities.

    摘要翻译: 公开了一种用于锅炉的低热膨胀Ni基超耐热合金,其具有优异的高温强度。 可以焊接合金,而不需要进行任何时效处理。 该合金的维氏硬度值为240以下。 该合金含有0.2质量%以下的Si(以质量计),0.5%以下的Si,0.5%以下的Mn,10〜24%的Cr,1种或2种 的Mo和W的量满足下式:Mo + 0.5W = 5〜17%,Al为0.5〜2.0%,Ti为1.0〜3.0%,Fe为10% 以下的B和Zr中的一种或两种,B的含量为0.02%以下(不包括0%),Zr的含量为0.2%以下(不含0%),余量为48〜78 %的Ni和不可避免的杂质。

    Ni-Fe based super alloy, process of producing the same and gas turbine
    6.
    发明授权
    Ni-Fe based super alloy, process of producing the same and gas turbine 有权
    Ni-Fe基超级合金,其制造方法和燃气轮机

    公开(公告)号:US08043068B2

    公开(公告)日:2011-10-25

    申请号:US11206131

    申请日:2005-08-18

    IPC分类号: F01D5/14

    摘要: A Ni—Fe based super alloy having high strength and toughness at high temperatures even when used in high-temperature environments, and a process of producing the super alloy. A turbine disk using the super alloy, a process of producing the turbine disk, a turbine spacer using the super alloy, and a process of producing the turbine spacer, as well as a gas turbine are also provided. The Ni—Fe based super alloy contains not more than 0.03% by weight of C, 14-18% of Cr, 15-45% of Fe, 0.5-2.0% of Al, not more than 0.05% of N, 0.5 to 2.0% of Ti, 1.5-5.0% of Nb, and Ni as a main ingredient.

    摘要翻译: 即使在高温环境下使用时,也能够在高温下具有高强度和韧性的Ni-Fe系超合金,以及超合金的制造方法。 还提供了使用超级合金的涡轮盘,制造涡轮盘的方法,使用超级合金的涡轮间隔件,以及制造涡轮间隔件的工艺以及燃气轮机。 Ni-Fe基超合金含有不超过0.03重量%的Cr,14-18%的Cr,15-45%的Fe,0.5-2.0%的Al,不超过0.05的N,0.5-2.0 Ti的%,Nb的1.5〜5.0%,Ni为主要成分。

    NI-BASE ALLOY, HIGH-TEMPERATURE MEMBER FOR STEAM TURBINE AND WELDED ROTOR FOR TURBINE USING THE SAME, AND METHOD FOR MANUFACTURING THE SAME
    8.
    发明申请
    NI-BASE ALLOY, HIGH-TEMPERATURE MEMBER FOR STEAM TURBINE AND WELDED ROTOR FOR TURBINE USING THE SAME, AND METHOD FOR MANUFACTURING THE SAME 有权
    NI-BASE合金,用于蒸汽涡轮机的高温部件和使用该涡轮机的涡轮机的焊接转子及其制造方法

    公开(公告)号:US20100059146A1

    公开(公告)日:2010-03-11

    申请号:US12551884

    申请日:2009-09-01

    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 or building 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 (Ni3Al) 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γ-相析出强化型Ni基合金中提供了热处理能力和焊接性优异的合金,适用于与铁素体钢接合的合金。 此外,本发明提供了一种在整个焊接结构中具有强度,延展性和韧性的焊接式涡轮转子,当耐热温度为675℃以上的析出强化型Ni基合金与铁素体钢 。 根据本发明的镍基合金包含钴,铬,铝,碳,硼,以及至少钨或钼,其余为镍和不可避免的杂质,其合金组成包含12〜25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γ'相固相温度为900℃以上的第一Ni基合金和675°的蠕变断裂强度下, C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γ'相(Ni3Al)析出强化型Ni基合金,γ'相固溶温度为850℃以下。

    Turbine Rotor
    9.
    发明申请
    Turbine Rotor 审中-公开
    涡轮转子

    公开(公告)号:US20100028155A1

    公开(公告)日:2010-02-04

    申请号:US12509537

    申请日:2009-07-27

    IPC分类号: F01D5/14

    摘要: An object of the present invention is to provide a turbine rotor with high reliability of strength. The turbine rotor includes two rotors which are connected at the butted portions of the rotors via a weld without forming penetration beads. Specifically, the turbine rotor includes a rotor for low pressure, a rotor for high pressure, and a center hole formed at a center portion of the turbine rotor. The rotors for low pressure and for high pressure are integrated together into a steam turbine rotor by welding respective ends of the rotors to each other. The respective ends of the rotors are in contact with each other via at least two contact faces in a radial direction and an axial direction of the turbine rotor. At least parts of the respective ends are welded together.

    摘要翻译: 本发明的目的是提供一种高可靠性的涡轮转子。 涡轮转子包括两个转子,其通过焊接在转子的对接部分处连接而不形成穿透珠。 具体而言,涡轮转子包括低压用转子,高压用转子和形成在涡轮转子的中心部的中心孔。 通过将转子的相应端部彼此焊接,用于低压和高压的转子被集成在一起成为蒸汽轮机转子。 转子的相应端部经由涡轮机转子的径向方向和轴向方向上的至少两个接触面彼此接触。 各端的至少部分焊接在一起。

    Pipe for steam turbine, manufacturing process of same, main stream pipe and reheat pipe for steam turbine, and steam turbine power plant using those pipes
    10.
    发明授权
    Pipe for steam turbine, manufacturing process of same, main stream pipe and reheat pipe for steam turbine, and steam turbine power plant using those pipes 有权
    蒸汽轮机管道,制造工艺相同,蒸汽轮机主流管道和再热管,以及使用这些管道的蒸汽轮机发电厂

    公开(公告)号:US07632066B2

    公开(公告)日:2009-12-15

    申请号:US11480978

    申请日:2006-07-06

    IPC分类号: F01D25/00

    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。