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    • 2. 发明专利
    • Manufacturing method of nuclear/thermal power plant valve device
    • 核/热电厂阀门装置的制造方法
    • JP2003028315A
    • 2003-01-29
    • JP2001220810
    • 2001-07-23
    • Hitachi Ltd株式会社日立製作所
    • CHIKAZAKI MITSUOKUNIYA JIROKIYOTOKI YOSHIHISASAKAMOTO AKIRACHIBA YOSHITERUMATSUSHITA SHIZUO
    • G21D1/00C22C19/07F16K1/20F16K5/02
    • Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a valve having excellent corrosion/erosion resistance and maintainability by joining corrosion/wearing resisting alloy wherein eutectic carbide is discontinuously distributed to a sliding portions of various apparatus and valves by brazing, to improve the maintainability of thermal power plant and a nuclear power plant, and to provide the nuclear power plant being excellent in the safety of work and having a system for circulating primary cooling water. SOLUTION: In this valve and apparatus such as a nuclear power plant using the valve, eutectic carbide in alloy having a casting organization basic material portion and the eutectic carbide is formed in plural lumps or plural particles. corrosion/wearing resisting alloy wherein the eutectic carbide is discontinuously distributed is joined to a sliding portion.
    • 要解决的问题:为了提供通过接合耐腐蚀/耐磨合金而具有优异的耐腐蚀/耐腐蚀性和可维护性的阀,其中共晶碳化物通过钎焊不连续地分布到各种装置和阀的滑动部分,以提高火力发电厂的可维护性 和核电站,并提供核电厂工作安全性优良,并拥有一级循环冷却水循环系统。 解决方案:在这种阀和装置如使用阀的核电站中,具有铸造组织基本材料部分的合金中的共晶碳化物和共晶碳化物形成为多个块状或多个颗粒。 其中共晶碳化物不连续分布的耐腐蚀/耐磨合金接合到滑动部分。
    • 4. 发明专利
    • Joined structure of cobalt-based alloy
    • 基于钴的合金的接合结构
    • JP2003048076A
    • 2003-02-18
    • JP2001235707
    • 2001-08-03
    • Hitachi Ltd株式会社日立製作所
    • KIYOTOKI YOSHIHISACHIKAZAKI MITSUOMATSUSHITA SHIZUOKUNIYA JIROKATO TAKAHIKOCHIBA YOSHITERU
    • G21D1/00B23K20/00B23K35/30B23K103/08C22C19/07F16K25/00G21D1/02
    • G21D1/02Y02E30/40Y10T137/7036Y10T428/12861Y10T428/12931Y10T428/12937
    • PROBLEM TO BE SOLVED: To improve the corrosion resistance and wear resistance of a cobalt- based alloy part in a joined structure of a cobalt-based alloy. SOLUTION: In the joined structure of a cobalt-based alloy, a cobalt-based alloy layer 1 where granular or aggregated eutectic carbide particles 2 are dispersed is joined to the metal of a base material 37 via an insert material layer 36. The joined structure of the cobalt-based alloy is obtained by; interposing an insert material having a thickness of about 40 μm into the space between the base material of S45C carbon steel and a cobalt-based alloy material which has a composition containing, by weight, 1.03% C, 29.73% Cr, 3.86% W, 2.59% Ni, 2.67% Fe, 0.59% Si and 0.07% Mo, and the balance substantially Co and which contains granular or aggregated eutectic carbide particles having a particle size of
    • 要解决的问题:提高钴基合金的接合结构中的钴基合金部件的耐腐蚀性和耐磨性。 解决方案:在钴基合金的接合结构中,分散有颗粒或聚集的共晶碳化物颗粒2的钴基合金层1通过插入材料层36接合到基材37的金属。接合结构 的钴基合金通过以下方式得到: 将具有约40μm厚度的插入材料插入到S45C碳钢的基材和钴基合金材料之间的空间中,所述钴基合金材料具有重量比为1.03%C,29.73%Cr,3.86%W的组成, 2.59%Ni,2.67%Fe,0.59%Si和0.07%Mo,余量基本上为Co,并且在铸造结构的基体中含有粒径<=30μm的粒状或聚集的共晶碳化物颗粒; 并在1,100℃进行液相扩散接合1小时的保持时间。 接合后的钴系合金层1含有粒状或聚集的共晶碳化物。