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    • 4. 发明授权
    • Heat-resisting steel, method for thermally treating heat-resisting steel, and components made of heat-resisting steel
    • 耐热钢,耐热钢热处理方法以及由耐热钢制成的部件
    • US06821360B2
    • 2004-11-23
    • US09725234
    • 2000-11-29
    • Ryuichi IshiiYoichi TsudaMasayuki Yamada
    • Ryuichi IshiiYoichi TsudaMasayuki Yamada
    • C22C3818
    • C22C38/32C21D1/28C21D9/38C22C38/001C22C38/22C22C38/24C22C38/26C22C38/28
    • 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.
    • 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。
    • 8. 发明授权
    • Steam turbine power generation system and low-pressure turbine rotor
    • 蒸汽轮机发电系统和低压涡轮转子
    • US07192247B2
    • 2007-03-20
    • US11282851
    • 2005-11-21
    • Takeo SugaRyuichi IshiiTakeo TakahashiMasafumi Fukuda
    • Takeo SugaRyuichi IshiiTakeo TakahashiMasafumi Fukuda
    • F01D5/14F01D1/02
    • F01D5/28C22C1/02
    • A steam turbine power generation system, comprising a high-pressure turbine, an intermediate-pressure turbine and a low-pressure turbine, wherein the intermediate-pressure turbine has an inlet steam temperature of 650–720° C., and the low-pressure turbine has an inlet steam temperature of 410–430° C.; and a low-pressure turbine rotor of the low-pressure turbine is made of a heat-resisting steel which contains, in weight percent, C: 0.28 or less, Si: 0.03 or less, Mn: 0.05 or less, Cr: 1.5 to 2.0, V: 0.07 to 0.15, Mo: 0.25 to 0.5, Ni: 3.25 to 4.0, and the balance of Fe, unavoidable impurities and unavoidable gases, and the unavoidable impurities contain, in weight percent, P: 0.004 or less, S: 0.002 or less, Sn: 0.01 or less, As: 0.008 or less, Sb: 0.005 or less, Al: 0.008 or less and Cu: 0.1 or less.
    • 一种蒸汽轮机发电系统,包括高压涡轮机,中压涡轮机和低压涡轮机,其中中压涡轮机的入口蒸汽温度为650-720℃,低压涡轮机 涡轮机的入口蒸汽温度为410-430℃。 低压涡轮机的低压涡轮机转子由耐热钢制成,该重量百分比含有C:0.28以下,Si:0.03以下,Mn:0.05以下,Cr:1.5〜 2.0,V:0.07〜0.15,Mo:0.25〜0.5,Ni:3.25〜4.0,余量为Fe,不可避免的杂质和不可避免的气体,不可避免的杂质含有重量百分比P:0.004以下,S: 0.002以下,Sn:0.01以下,As:0.008以下,Sb:0.005以下,Al:0.008以下,Cu:0.1以下。