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17 条记录 (耗时 0.012 秒)

    Highly hot corrosion resistant and high-strength superalloy, highly hot corrosion resistant and high-strength casting having single crystal structure, gas turbine and combined cycle power generation system
    12.
    发明公开
    Highly hot corrosion resistant and high-strength superalloy, highly hot corrosion resistant and high-strength casting having single crystal structure, gas turbine and combined cycle power generation system 失效
    在高温下具有高强度的单晶具有在​​高温下的燃气涡轮机的耐腐蚀性和联合循环发电设备的耐腐蚀性的高强度超级合金。

    公开(公告)号：EP0560296A1

    公开(公告)日：1993-09-15

    申请号：EP93103777.4

    申请日：1993-03-09

    申请人： HITACHI METALS, LTD. ,  HITACHI, LTD.

    发明人： Sato, Koji ,  Ohno, Takehiro ,  Yasuda, Ken ,  Tamaki, Hideki ,  Yoshinari, Akira

    IPC分类号： C22C19/05 ,  C30B11/00 ,  C30B29/52 ,  F02D43/00

    CPC分类号： C22C19/057 ,  C22C19/056 ,  C30B11/00 ,  C30B29/52

    摘要： A superalloy having more excellent hot corrosion resistance than conventional single crystal alloys, oxidation resistance levels as high as that of conventional single crystal alloys, high strength, and creep rupture strength ; single crystal members used for a blade (Fig. 4) or a nozzle (Fig. 5) produced by utilizing such an alloy ; and a combined cycle power generation system produced by utilizing such members. A highly hot corrosion resistant and high-strength superalloy consisting essentially of, by weight, 6 -12% Cr, 4.5 - 6.5% Al, 2 - 12% W, 2.5 - 10% Ta, not more than 5.8% Mo, 0.1 - 3% Co, 0.2 - 3% Nb, 0.1 - 4% Re, not more than 0.3% Hf, and the balance being Ni and unavoidable impurities ; single crystal members used for a blade (Fig. 4) or a nozzle (Fig. 5) produced utilizing such an alloy ; and a combined cycle power generation system produced by utilizing such members.

    摘要翻译： 具有比传统的单晶合金，耐氧化性水平高达象常规的单晶合金，高强度和蠕变断裂强度的更优异的高温耐腐蚀性超级合金; 用于叶片单晶构件或喷嘴通过在合金利用检查产生（图4）（图5）; 和联合循环发电系统通过利用寻求成员产生的。 高度热耐腐蚀和高强度超级合金基本上由，按重量计，6 - 12％的Cr，4.5 - 6.5％的Al，2 - 12％的W，2.5 - 10％的Ta，不超过5.8％的Mo，0.1 - 3％的Co，0.2 - 3％的Nb，0.1 - 4％的Re，不大于0.3％Hf和余量为Ni和不可避免的杂质; 用于叶片单晶成员或一个喷嘴（图5）上产生的合金利用检查（图4）; 和联合循环发电系统通过利用寻求成员产生的。

    Automotive engine parts composed of heat resistant ferritic cast steel having excellent thermal fatigue resistance
    13.
    发明公开
    Automotive engine parts composed of heat resistant ferritic cast steel having excellent thermal fatigue resistance 失效
    铁素体耐热铸钢的耐疲劳性优异的热。

    公开(公告)号：EP0440220A1

    公开(公告)日：1991-08-07

    申请号：EP91101279.7

    申请日：1991-01-31

    申请人： HITACHI METALS, LTD.

    发明人： Watanabe, Rikizo ,  Sato, Koji

    IPC分类号： C22C38/40 ,  C22C38/52

    CPC分类号： C22C38/52 ,  C22C38/30 ,  C22C38/40

    摘要： A heat-resistant ferritic cast steel having excellent thermal fatigue resistance, consisting, by weight, of 0.25 to 0.45% C, 0.3 to 2.0% Si, not more than 1.0% Mn, 17 to 22% Cr, at least one kind selected from the group consisting of not more than 6% Co and not more than 1.5% Ni, the amount of %Co + 3 %Ni being in the range of 1 to 6%, 0.001 to 0.1% of at least one kind selected from the group consisting of Y and rare earth elements, and the balance Fe and incidental impurities, the ferritic cast steel being composed of a structure in which a ferrite (c) and M₂₃C₆ carbide (b) are dispersed in δ ferrite (a). With this specific composition, even at high temperatures, there can be maintained the structure which has the a ferrite (c) and the M₂₃C₆ (b) dispersed in the δ ferrite (a), with the result that there is obtained an excellent thermal fatigue resistance, and in this structure, the transformation under heating will not occur even at a temperature of about 1,000°C. The steel of the present invention is particularly suited for a turbo rotor casing, an exhaust manifold, etc., of an automobile.

    摘要翻译： 具有优异的热疲劳特性，其由按重量计，12时25分至00的耐热铁素体铸钢：45％C，0.3〜2.0％的Si，不大于1.0％的Mn，17至22％的Cr，至少一种选自 所述组包括不超过6％的Co和不超过1.5％的Ni，％的Co + 3％的Ni中的1〜6％的范围内，0.001〜从所述组中选出的至少一种0.1％的量 由Y和稀土元素，余量Fe和不可避免的杂质的，铁素体铸钢被由其中的结构的铁素体（c）和M23C6碳化物（b）的分散在铁素体增量的（a）。 与此特定组合物，即使在高温下，也能够维持分散在δ铁素体（A），它具有一个铁素体（c）和M23C6（b）中的结构中，与thatthere获得优异的热疲劳的结果 性，并且在该结构中，在加热下的改造不会即使在约1000℃本发明的钢的温度进行特别适合于涡轮转子壳体到排气歧管等，汽车的。

    Heat resistant steel for use as material of engine valve
    14.
    发明公开
    Heat resistant steel for use as material of engine valve 失效
    HitzebeständigerStahl verwendbarfürVentile von Verbrennungsmotoren。

    公开(公告)号：EP0411569A1

    公开(公告)日：1991-02-06

    申请号：EP90114689.4

    申请日：1990-07-31

    申请人： HITACHI METALS, LTD.

    发明人： Sato, Koji ,  Watanabe, Rikizo

    IPC分类号： C22C38/58

    CPC分类号： C22C38/001 ,  C22C38/58

    摘要： A heat resistant steel for use as a material of engine valves, having a composition containing, by weight, not less than 0.01% and below 0.20% of carbon, from 0.05% to 1.0% of silicon, from 7.5% to 15.0% of manganese, from 2.0% to 20.0% in total of at least one of nickel and cobalt, from 15.0% to 25.0% of chromium, not more than 3.0% of molybdenum, above 2.0% and not more than 10.0% of tungsten, not less than 0.01% and below 0.50% of niobium, from 0.30% to 0.65% of nitrogen, not more than 0.02% of boron, and the balance incidental inclusions and iron. Cobalt content is determined to meet the condition of % Co = (Ni ± 5)%. The heat resistant steel meets the conditions of: oxidation weight loss when held at 1000°C for 100 hours being not greater than 0.15 mg/cm²/hour in atmosphere; tensile strength being not less than 196.2 N/mm²(20 kgf/mm²) at 900°C after a solution treatment at 1030 to 1070°C and a subsequent aging treatment; and creep rupture life at 900°C under stress load of 58.9 N/mm²(6 kgf/mm²) being not less than 25 hours.

    摘要翻译： 一种用作发动机阀门材料的耐热钢，其组成包含重量不小于0.01％，低于0.20％的碳，0.05％至1.0％的硅，7.5％至15.0％的锰 ，镍和钴中的至少一种为2.0％至20.0％，铬的15.0％至25.0％，钼的不超过3.0％，钨的2.0％以上且10.0％以下，不小于 0.01％以下的铌的0.50％以下，0.3％〜0.65％的氮，不超过0.02％的硼，余下的夹杂物和铁。 钴含量被确定为满足％Co =（Ni +/- 5）％的条件。 耐热钢满足以下条件：在1000℃下保持100小时的氧化重量损失在大气中不大于0.15mg / cm 2 /小时; 在1030〜1070℃的溶液处理后，900℃下的拉伸强度不小于196.2N / mm 2（20kgf / mm 2），随后的时效处理; 蠕变断裂寿命在900℃，应力为58.9N / mm 2（6kgf / mm 2）时不小于25小时。