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发明公开
CN101765702A 旋转机器的转子及其制造方法 失效 - 权利终止

旋转机器的转子及其制造方法
摘要：
本发明提供汽轮机转子及其制造方法，其中，该转子为即使利用焊接将Ni基合金和12Cr钢等其他耐热性钢铁材料进行接合、也可以保持该焊接部位的强度，并且在700℃水平的蒸汽条件下仍能够使用的汽轮机转子。该转子被设置在导入了650℃以上的工作流体的旋转机器中，是利用焊接将多个部件接合而形成的旋转机器的转子，所述多个部件的强度因流通的工作流体的温度而不同，其中，该转子通过利用焊接将第1部件和第2部件接合而构成，所述第1部件Ni基合金形成，该Ni基合金从室温到700℃之间的平均线性膨胀系数为12.4×10-6/℃～14.5×10-6/℃、优选为14.0×10-6/℃以下，所述第2部件由高铬钢形成，并且，使与650℃以上的工作流体相接触的部位为由上述Ni基合金形成的第1部件。
摘要（英）：

Provided is a turbine rotor which can sustain the strength at a joint even if an Ni-based alloy and a heat-resistant steel material such as 12Cr steel are joined by welding, and can be employed even under steam conditions on the order of 700 DEG C, and also provided is a method for manufacturing same. The rotor of a rotary machine, into which working fluid of 650 DEG C or above is introduced, is constituted by joining by welding a plurality of members having strengths that differ according to the temperature of the passing working fluid. The rotor of a rotary machine is constituted by joiningby welding a first member consisting of an Ni-based alloy having an average coefficient of linear expansion of 12.410-6/ DEG C-14.510-6/ DEG C, preferably 14.010-6/ DEG C or less, at room temperatureto 700 DEG C, and a second member consisting of high chromium steel, wherein the first member consists of an N- based alloy at the part thereof touching the working fluid of 650 DEG C or above.

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