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发明公开
CN104343470A 蒸汽轮机转子 无效 - 驳回

蒸汽轮机转子
摘要：
本发明提供一种蒸汽轮机转子，实现包含低压最终段L-0段以及比其处于高压侧的L-1段的段翼的SCC感受性的减少和LCF寿命的提高的双方。本发明的蒸气轮机转子是通过焊接接合低压最终段L-0段的转子盘、和包含比该低压最终段L-0段位于高压侧的L-1段的多段的转子盘而形成的蒸气轮机转子，其特征在于，上述低压最终段L-0段以及比该低压最终段L-0段位于高压侧的至少L-1段的转子盘材料是12Cr钢，并且上述转子盘材料的拉伸强度是900～1200MPa。
摘要（英）：

It is an objective of the invention to provide a steam turbine rotor that is capable of both reducing stress corrosion cracking (SCC) susceptibility and improving low cycle fatigue (LCF) life thereof. There is provided a steam turbine rotor, comprising a rotor disk in a low pressure final stage (L-0), and another rotor disk in a plurality of stages including a stage (L-1) positioned closer to a high pressure side than the low pressure final stage (L-0), the rotor disk in the low pressure final stage (L-0) and the rotor disk in a plurality of stages including the stage (L-1) being joined by welding, wherein a material of both the rotor disk in the low pressure final stage and the rotor disk in a plurality of stages including the stage (L-1) is a 12Cr steel and has a tensile strength of 900 to 1200 MPa.

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