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    • 2. 发明授权
    • Steam turbine rotor and steam turbine plant
    • 蒸汽轮机转子和汽轮机厂
    • US07459035B2
    • 2008-12-02
    • US10864418
    • 2004-06-10
    • Shinya ImanoHiroyuki DoiHirotsugu KawanakaEiji Saitou
    • Shinya ImanoHiroyuki DoiHirotsugu KawanakaEiji Saitou
    • C22C19/05C22C30/00
    • C22F1/10C22C19/05C22C19/056C22C19/058C22C30/00C22C38/06C22C38/48C22C38/50F05B2220/301
    • To provide a rotor material preferable for a steam turbine of which main steam temperature is 675° C. or more, particularly exceeding 700° C., and a steam turbine plant having a rotor formed by the material, the invention provides a steam turbine plant including a very-high-pressure turbine of which steam inlet temperature is 675 to 725° C. and steam outlet temperature is 650° C. or less, a high-pressure turbine, and a medium-low-pressure turbine, wherein a rotor of the very-high-pressure turbine is formed from a forged material of NiFe-base alloy containing: 14 to 18 weight % Cr, 15 to 45 weight % Fe, 1.0 to 2.0 weight % Al, 1.0 to 1.8 weight % Ti, C and N of which the sum is 0.05 or less weight %, and Nb in the range specified by the formula: 3.5−(Fe weight %)/20
    • 为了提供优选主蒸汽温度为675℃或更高,特别是超过700℃的蒸汽轮机的转子材料,以及具有由该材料形成的转子的蒸汽轮机设备,本发明提供了一种汽轮机设备 包括蒸汽入口温度为675〜725℃,蒸汽出口温度为650℃以下的高压涡轮机,高压涡轮机和中低压涡轮机,其中转子 的超高压涡轮机由NiFe基合金的锻造材料形成,该锻造材料包含:14-18重量%的Cr,15-45重量%的Fe,1.0-2.0重量%的Al,1.0-1.8重量%的Ti,C 并且其总和为0.05重量%以下的Nb,Nb在由式3.5-(Fe重量%)/ 20 <(Nb重量%)<4.5-(Fe重量%)/ 20)规定的范围内。
    • 3. 发明授权
    • Gas turbine blade and manufacturing method thereof
    • 燃气轮机叶片及其制造方法
    • US08813361B2
    • 2014-08-26
    • US13211417
    • 2011-08-17
    • Shinya ImanoKunihiro IchikawaHiroyuki DoiKatsumi Tanaka
    • Shinya ImanoKunihiro IchikawaHiroyuki DoiKatsumi Tanaka
    • B21D53/78
    • C22C19/051C22C19/05F01D5/005F05D2230/235F05D2230/80
    • In a gas turbine blade where a part of the γ′ phase precipitation strengthened type Ni-based alloy base material is composed of a weld metal, the weld metal is a Ni-based alloy containing Ta from 4.8 to 5.3 wt. %, Cr from 18 to 23 wt. %, Co from 12 to 17 wt. %, W from 14 to 18 wt. %, C from 0.03 to 0.1 wt. %, Mo from 1 to 2 wt. %, and Al of 1 wt. % or less, in which the oxygen content is 0 to 30 ppm, the Ti content from 0 to 0.1 wt. %, and the Re content from 0 to 0.5 wt. %. A blade base metal is manufactured by the step of stripping, the step of solution heat treatment where the γ′ phase is dissolved again, the step of welding in an inert gas chamber by a TIG method using a welding wire where the weld metal can be obtained, the step of HIP treatment at 1100° C. to 1150° C., and the step of an aging treatment at 835° C. to 855° C.
    • 在γ相析出强化型Ni基合金基材的一部分由焊接金属构成的燃气轮机叶片中,焊接金属为含有4.8〜5.3重量%的Ta的Ni系合金。 %,Cr为18〜23wt。 %,Co为12〜17wt。 %,W为14〜18wt。 %,C为0.03〜0.1wt。 %,Mo为1〜2wt。 %,Al为1重量%。 %以下,氧含量为0〜30ppm,Ti含量为0〜0.1重量%。 %,Re含量为0〜0.5wt。 %。 通过剥离步骤,再次溶解γ'相的固溶热处理步骤,通过TIG法使用焊丝在焊接金属可以焊接的焊丝的惰性气体室中进行焊接的工序来制造刀片母材 在1100℃至1150℃下进行HIP处理的步骤,以及在835℃至855℃的时效处理步骤。