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    • 10. 发明授权
    • High Cr ferritic heat resistance steel
    • 高铬铁素体耐热钢
    • US07820098B2
    • 2010-10-26
    • US10181318
    • 2001-08-16
    • Masahiko MorinagaYoshinori MurataTsukasa AzumaKazuhiro MikiTohru IshiguroRyokichi Hashizume
    • Masahiko MorinagaYoshinori MurataTsukasa AzumaKazuhiro MikiTohru IshiguroRyokichi Hashizume
    • C22C38/30C22C38/22C22C38/24C22C38/26
    • C22C38/005C22C38/001C22C38/22C22C38/24C22C38/26C22C38/30C22C38/32
    • In the thermal power system, the electricity production efficiency may be improved by providing turbine members having the improved high temperature characteristic over the corresponding prior art turbine members. Turbine members may be provided by using high resistant steels composed of any one or ones selected from the group consisting of the components, including 0.08 to 0.13% of carbon (C), 8.5 to 9.8% of chromium (Cr), 0 to 1.5% of molybdenum (Mo), 0.10 to 0.25% of vanadium (V), 0.03 to 0.08% of niobium (Nb), 0.2 to 5.0% of tungsten (W), 1.5 to 6.0% of cobalt (Co), 0.002 to 0.015% of boron (B), 0.015 to 0.025% of nitrogen (N), and optionally, 0.01 to 3.0% of rhenium (Re), 0.1 to 0.50% of silicon (Si), 0.1 to 1.0% of manganese (Mo), 0.05 to 0.8% of nickel (Ni) and 0.1 to 1.3% of cupper. The long-time creep strength may be improved by using those high resistant steels for turbine rotors, turbine members and the like, which enable the steam temperature to be higher, thereby improving the electricity production efficiency in the thermal power system. The accelerated creep inhibitor parameter is provided for controlling the reduction in the creep strength so that the high creep strength can be maintained for the extended period of time.
    • 在火力发电系统中,通过提供相对于现有技术的涡轮机构件具有改进的高温特性的涡轮机构,可以提高电力生产效率。 涡轮机构可以通过使用由选自组分组成的组中的任何一种或其组成的高抗性钢提供,包括碳(C)的0.08〜0.13%,铬(Cr)的8.5〜9.8%,铬(Cr)的0〜1.5% 的钼(Mo),0.10〜0.25%的钒(V),0.03〜0.08%的铌(Nb),0.2〜5.0%的钨(W),1.5〜6.0%的钴(Co),0.002〜0.015% 的硼(B),0.015〜0.025%的氮(N)和任选的0.01〜3.0%的铼(Re),0.1〜0.50%的硅(Si),0.1〜1.0%的锰(Mo) 至0.8%的镍(Ni)和0.1至1.3%的铜。 可以通过使用用于涡轮转子,涡轮机构等的高耐用性钢来提高长时间的蠕变强度,这使得蒸汽温度更高,从而提高火力发电系统的电力生产效率。 提供了加速蠕变抑制剂参数,用于控制蠕变强度的降低,使得能够在较长时间内保持高蠕变强度。