Heat-resisting steel, method for thermally treating heat-resisting steel, and components made of heat-resisting steel
    5.
    发明授权
    Heat-resisting steel, method for thermally treating heat-resisting steel, and components made of heat-resisting steel 有权
    耐热钢,耐热钢热处理方法以及由耐热钢制成的部件

    公开(公告)号:US06821360B2

    公开(公告)日:2004-11-23

    申请号:US09725234

    申请日:2000-11-29

    IPC分类号: C22C3818

    摘要: A heat-resisting steel comprising 0.15-0.30 wt. % C, 0.05-0.3 wt. % Si, 0.01-0.7 wt. % Mn, 1.8-2.5 wt. % Cr, 0.15-0.23 wt. % V, 1.5-2.5 wt. % W, 0.01-0.02 wt. % Ti, 0.01-0.08 wt. % Nb, 0.005-0.03 wt. % N, 0.001-0.015 wt. % B, and Fe and unavoidable impurities as the remainder; a heat-resisting steel comprising 0.15-0.30 wt. % C, 0.05-0.3 wt. % Si, 0.01-0.7 wt. % Mn, 1.8-2.5 wt. % Cr, 0.15-0.23 wt. % V, 1.5-2.5 wt. % W, 0.3-0.8 wt. % Mo, 0.01-0.02 wt. % Ti, 0.01-0.08 wt. % Nb, 0.005-0.03 wt. % N, 0.001-0.015 wt. % B, and Fe and unavoidable impurities as the remainder; and a heat-resisting steel that is obtained by subjecting one of the above heat-resisting steels to a heat treatment comprising the step of oil-cooling the heat-resisting steel to a temperature of 300° C. or lower. These heat-resisting steels are excellent in both high-temperature strength and impact properties.

    摘要翻译: 一种耐热钢,其含有0.15-0.30wt。 %C,0.05-0.3重量% %Si,0.01-0.7wt。 %Mn,1.8-2.5重量% %Cr,0.15-0.23wt。 %V,1.5-2.5wt。 %W,0.01-0.02wt。 %Ti,0.01-0.08wt。 %Nb,0.005-0.03wt。 %N,0.001-0.015wt。 %B,Fe和其余的不可避免的杂质; 包含0.15-0.30重量%的耐热钢。 %C,0.05-0.3重量% %Si,0.01-0.7wt。 %Mn,1.8-2.5重量% %Cr,0.15-0.23wt。 %V,1.5-2.5wt。 %W,0.3-0.8wt。 %Mo,0.01-0.02wt。 %Ti,0.01-0.08wt。 %Nb,0.005-0.03wt。 %N,0.001-0.015wt。 %B,Fe和其余的不可避免的杂质; 以及耐热钢,其通过使上述耐热钢中的一种进行热处理而获得,所述热处理包括将耐热钢的油冷却步骤至300℃或更低的温度。 这些耐热钢在高温强度和冲击性方面均优异。

    High toughness heat-resistant steel, turbine rotor and method of producing the same
    6.
    发明授权
    High toughness heat-resistant steel, turbine rotor and method of producing the same 失效
    高韧性耐热钢,涡轮转子及其制造方法

    公开(公告)号:US06193469B1

    公开(公告)日:2001-02-27

    申请号:US09046793

    申请日:1998-03-24

    IPC分类号: F01D528

    摘要: A high toughness heat-resistant steel, a turbine rotor formed of this steel and a method of producing the turbine rotor are described. The heat-resistant steel has a composition consisting essentially of: 0.05 to 0.30 wt % C, 0 to 0.20 wt % Si, 0 to 1.0 wt % Mn, 8.0 to 14.0 wt % Cr, 0.5 to 3.0 wt % Mo, 0.10 to 0.50 wt % V, 2.0 to 5.0 wt % Ni, 0.01 to 0.50 wt % Nb, 0.01 to 0.08 wt % N, 0.001 to 0.020 wt % B, balance Fe and unavoidable impurities. The steel has excellent characteristics in not only tensile strength and toughness at a relatively low temperature condition of a steam turbine such as high/low pressure combined type one but also creep rupture strength at a high temperature condition of this turbine.

    摘要翻译: 描述了一种高韧性耐热钢,由该钢形成的涡轮转子和制造该涡轮转子的方法。 耐热钢的组成主要包括:0.05〜0.30重量%的C,0〜0.20重量%的Si,0〜1.0重量%的Mn,8.0〜14.0重量%的Cr,0.5〜3.0重量%的Mo,0.10〜0.50 重量%V,2.0〜5.0重量%Ni,0.01〜0.50重量%Nb,0.01〜0.08重量%N,0.001〜0.020重量%B,余量为Fe和不可避免的杂质。 该钢具有不仅在蒸汽涡轮机的较低温度条件下的拉伸强度和韧性优异,例如高/低压组合型,而且在该涡轮的高温条件下也具有蠕变断裂强度。

    Rotor for steam turbine and manufacturing method thereof
    7.
    发明授权
    Rotor for steam turbine and manufacturing method thereof 失效
    蒸汽轮机转子及其制造方法

    公开(公告)号:US5779821A

    公开(公告)日:1998-07-14

    申请号:US276920

    申请日:1994-07-19

    摘要: A rotor for steam turbine rotor made of a heat resistant steel having a composition, which contains 0.05 to 0.3% by weight of C, 8.0 to 13.0% by weight of Cr, 1.0% by weight or less (excluding 0%) of Si, 1.0% by weight or less (excluding 0%) of Mn, 2.0% by weight or less (excluding 0%) of Ni, 0.10 to 0.50% by weight of V, 0.50 to 5.0% by weight of W, 0.025 to 0.10% by weight of N, 1.5% by weight or less excluding 0%) of Mo, at least one element selected from the group consisting of 0.03 to 0.25% by weight of Nb and 0.03 to 0.50% by weight of Ta, 0 to 3% of Re, 0 to 5.0% by weight of Co, 0 to 0.05% by weight of B and the balance of Fe and inevitable impurities, and having a ferrite/martensite structure.

    摘要翻译: 一种蒸汽涡轮转子的转子,其由耐热钢制成,其组成为:含有0.05〜0.3重量%的C,8.0〜13.0重量%的Cr,1.0重量%以下(不含0%)的Si, 1.0重量%以下(不包括0%)的Mn,2.0重量%以下(不含0%)的Ni,0.10〜0.50重量%的V,0.50〜5.0重量%的W,0.025〜0.10重量% 的N,1.5重量%以下,不含0%)的Mo,选自0.03〜0.25重量%的Nb和0.03〜0.50重量%的Ta中的至少一种元素,0〜3重量% 的Co,0〜5.0重量%的Co,0〜0.05重量%的B,余量由Fe和不可避免的杂质构成,具有铁素体/马氏体组织。

    Heat resisting steels
    8.
    发明授权
    Heat resisting steels 失效
    耐热钢

    公开(公告)号:US5560788A

    公开(公告)日:1996-10-01

    申请号:US461404

    申请日:1995-06-05

    CPC分类号: C22C38/30 C22C38/22

    摘要: A heat resisting steels comprising, on percentage by weight basis, 0.05 to 0.2% of C, not more than 1.0% of Ni, 9 to 13% of Cr, 0.05 to 1% of Mo, 0.05 to 0.3% of V, 1 to 3% of W, 1 to 5% of Co, 0.01 to 0.1% of N, at least one member selected from 0.01 to 0.15% of Nb, 0.01 to 0.15% of Ta, 0.003 to 0.03% of a rare earth element, 0.003 to 0.03% of Ca and 0.003 to 0.03% of B, and the remainder of Fe and unavoidable impurities have enhanced high temperature characteristics and are suitable for use in parts of turbine such as turbine rotors, turbine blades, turbine disks and bolts.

    摘要翻译: 一种耐热钢,其以重量%计含有0.05%至0.2%的C,不超过1.0%的Ni,9至13%的Cr,0.05至1%的Mo,0.05至0.3%的V,1至 3%的W,1〜5%的Co,0.01〜0.1%的N,选自0.01〜0.15%的Nb,0.01〜0.15%的Ta,0.003〜0.03%的稀土元素,0.003 至0.03%的Ca和0.003〜0.03%的B,其余的Fe和不可避免的杂质具有提高的高温特性,并且适用于涡轮机的部件,例如涡轮转子,涡轮叶片,涡轮盘和螺栓。

    Heat-resisting steel, heat treatment method for heat-resisting steel and high-temperature steam turbine rotor
    9.
    发明申请
    Heat-resisting steel, heat treatment method for heat-resisting steel and high-temperature steam turbine rotor 审中-公开
    耐热钢,耐热钢和高温汽轮机转子的热处理方法

    公开(公告)号:US20060054254A1

    公开(公告)日:2006-03-16

    申请号:US11218659

    申请日:2005-09-06

    IPC分类号: C22C38/46

    CPC分类号: C21D9/36

    摘要: A heat-resisting steel consisting of, in percentage by weight, 0.25 to 0.35 of C, 0.15 or less of Si, 0.2 to 0.8 of Mn, 0.3 to 0.6 of Ni, 1.6 to 1.9 of Cr, 0.26 to 0.35 of V, 0.6 to 0.9 of Mo, 0.9 to 1.4 of W, less than 0.01 of Ti, 0.001 to 0.007 of N, 1.3 to 1.4 of a total of Mo and W/2 and the balance of Fe and inevitable impurities, wherein the heat-resisting steel consists of a bainite single phase structure securing 3.5 or more of a total amount of precipitates as 1.0 or more of Fe, 0.8 to 0.9 of Cr, 0.4 to 0.5 of Mo, 0.3 to 0.5 of W and 0.2 or more of V in percentage by weight are moved into the precipitates after a tempering heat treatment.

    摘要翻译: 作为耐热钢,以C:0.15〜0.35,Si:0.15〜0.15,Mn:0.2〜0.8,Ni:0.3〜0.6,Cr:1.6〜1.9,V:0.26〜0.35,V:0.6 至0.9的Mo,0.9〜1.4的W,小于0.01的Ti,0.001〜0.007的N,1.3〜1.4的Mo和W / 2,余量的Fe和不可避免的杂质,其中耐热钢 包括贝氏体单相结构,其固定3.5倍以上的总量为Fe,Cr为0.8〜0.9,Mo为0.4〜0.5,W为0.3〜0.5,V为0.2以上,V为0.2以上, 在回火热处理后,重量移动到沉淀物中。