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1. 发明专利

JP2004339576A Materials for constituting nuclear reactor 有权
公开(公告)号：JP2004339576A
公开(公告)日：2004-12-02
申请号：JP2003138292
申请日：2003-05-16
申请人： Hitachi Ltd , Hiroyuki Konakawa , Tetsuo Shoji , Tadao Watanabe , 哲雄庄子 , 株式会社日立製作所 , 忠雄渡邊 , 博之粉川
发明人： YAMAMOTO MICHIYOSHI , KUNIYA JIRO , ISHIBASHI MAKOTO , SHOJI TETSUO , WATANABE TADAO , KONAKAWA HIROYUKI
IPC分类号： G21C5/00 , C21D8/00 , C22C38/00 , C22C38/58 , G21D1/00
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide metallic materials excellent in the durability to a crack promoted under environment, metallic parts constituted of the same and the use.
SOLUTION: In a chromium-containing iron base austenitic stainless steel, for example, the austenitic stainless steel containing ≤0.030% C, ≤1.00% Si, ≤2.00% Mn, 9.00-13.00% Ni and 18.00-20.00% Cr, after applying a solid-solution heat treatment, a load plastic strain is given to 2-30% in a cold-state with peening etc., and thereafter, the annealing is performed at 840 to

2. 发明专利

JP2005290529A Valve and its production method, power generation plant using the same, and member for valve 有权
标题翻译：阀门及其生产方法，使用其的发电厂和阀门的成员
公开(公告)号：JP2005290529A
公开(公告)日：2005-10-20
申请号：JP2004111669
申请日：2004-04-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： CHIKAZAKI MITSUO , KIYOTOKI YOSHIHISA , KUMAGAI MAKOTO , FURUSAWA SATOSHI , KUNIYA JIRO , KATO TAKAHIKO
IPC分类号： F16K25/00 , B22F3/15 , B22F3/20 , B22F9/08 , B23K20/00 , B23K101/34 , B23K103/24 , C22C19/00 , C22C38/00 , C22C38/22 , F16K3/12
摘要： PROBLEM TO BE SOLVED: To provide a valve having a higher hardness and higher impact resistance, and its production method, and a power generation plant and members for the valve using the same.
SOLUTION: The valve has a valve body and a valve box and one kind selected from a cobalt-based alloy member with a chromium carbide dispersed into a base, a nickel-based alloy member, and an iron-based alloy member is formed on valve seat surfaces sliding each other. The valve member is formed by hydrostatic pressurization sintering or hot extrusion sintering and is diffusion-joined to the valve seat.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供具有较高硬度和较高抗冲击性的阀及其制造方法，以及发电设备及使用该阀的阀构件。解决方案：阀具有阀体和阀箱，并且选自钴基合金构件中的一种，碳化铬分散在基体中，镍基合金构件和铁基合金构件形成在阀座表面上彼此滑动。阀构件通过静水压力烧结或热挤压烧结形成，并且与阀座扩散接合。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2003048076A Joined structure of cobalt-based alloy 有权
标题翻译：基于钴的合金的接合结构
公开(公告)号：JP2003048076A
公开(公告)日：2003-02-18
申请号：JP2001235707
申请日：2001-08-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIYOTOKI YOSHIHISA , CHIKAZAKI MITSUO , MATSUSHITA SHIZUO , KUNIYA JIRO , KATO TAKAHIKO , CHIBA YOSHITERU
IPC分类号： G21D1/00 , B23K20/00 , B23K35/30 , B23K103/08 , C22C19/07 , F16K25/00 , G21D1/02
CPC分类号： G21D1/02 , Y02E30/40 , Y10T137/7036 , Y10T428/12861 , Y10T428/12931 , Y10T428/12937
摘要： 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
摘要翻译：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。

4. 发明专利

JP2007031803A Highly corrosion-resistant reactor core material 审中-公开
标题翻译：高抗腐蚀反应堆核心材料
公开(公告)号：JP2007031803A
公开(公告)日：2007-02-08
申请号：JP2005219864
申请日：2005-07-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KASAHARA SHIGEKI , KUNIYA JIRO , MATSUURA MASAYOSHI
IPC分类号： C22C38/00 , C21D6/00 , C22C38/58 , G21C5/00 , G21D1/00
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a highly corrosion-resistant reactor core material having excellent corrosion resistance, swelling resistance and stress corrosion cracking resistance under radiation exposure and under a high-temperature and high-pressure water environment.
SOLUTION: As a member subjected to neutron irradiation in high-temperature water, austenitic steel containing at least either of Ti and Zr is used. To be concrete, the steel has a composition consisting of 0.005 to 0.04% C, ≤1% Si, ≤2% Mn, 23 to 28% Cr, 16 to 25% Ni, 0.5 to 3% Mo, 0.1 to 2% of at least either of Ti and Zr and the balance ≥50% Fe and further containing, other than the above, 1.0%, in total, of at least one or more elements among Pd, Pt and Hf. The steel is used as a constituent material for a reactor core of a nuclear reactor.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供耐辐射暴露和高温高压水环境下具有优异的耐腐蚀性，抗溶胀性和耐应力腐蚀开裂性的高耐腐蚀性的反应堆芯材。解决方案：作为在高温水中进行中子照射的构件，使用含有Ti和Zr中的至少一种的奥氏体钢。具体而言，钢的组成为：含有0.005〜0.04％的C，≤1％的Si，≤2％的Mn，23〜28％的Cr，16〜25％的Ni，0.5〜3％的Mo，0.1〜2％ Ti和Zr中的至少一种，余量≥50％的Fe，除了上述以外，还含有Pd，Pt和Hf中至少一种或多种元素的1.0％。钢被用作核反应堆的反应堆核心的构成材料。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2003028315A Manufacturing method of nuclear/thermal power plant valve device 审中-公开
标题翻译：核/热电厂阀门装置的制造方法
公开(公告)号：JP2003028315A
公开(公告)日：2003-01-29
申请号：JP2001220810
申请日：2001-07-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： CHIKAZAKI MITSUO , KUNIYA JIRO , KIYOTOKI YOSHIHISA , SAKAMOTO AKIRA , CHIBA YOSHITERU , MATSUSHITA SHIZUO
IPC分类号： G21D1/00 , C22C19/07 , F16K1/20 , F16K5/02
CPC分类号： Y02E30/40
摘要： 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.
摘要翻译：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。

6. 发明专利

JP2004195499A Nickel based alloy welded structure, and welding method therefor 审中-公开
公开(公告)号：JP2004195499A
公开(公告)日：2004-07-15
申请号：JP2002366014
申请日：2002-12-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KUNIYA JIRO , FUNAMOTO TAKAO , YAMAMOTO MICHIYOSHI
IPC分类号： G21C13/08 , B23K9/00 , B23K9/23 , B23K35/30 , B23K103/08 , B23K103/18 , G21C13/00 , G21D1/00
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a nuclear reactor welded structure which has excellent intergranular corrosion resistance and environmental acceleration cracking resistance, and to provide a welding method therefor.
SOLUTION: The welded structure having excellent corrosion resistance has a weld metal part of a nickel based alloy and a nickel based alloy or a nickel based alloy and a low alloy steel having a solidified structure stepwise changing from an austenite single phase structure to a two phase structure of austenite and δ-ferrite from the initial layer to the final layer, and in the final layer in contact with a use environment, the two phase structure of austenite and δ-ferrite is formed. Thus, the intergranular corrosion resistance and environmental acceleration cracking resistance of the weld metal part of a nickel based alloy and a nickel based alloy or a nickel based alloy and a low alloy steel used for pressure vessels, various furnace structures, piping and various nozzles of light water type nuclear reactors can be improved.
COPYRIGHT: (C)2004,JPO&NCIPI

7. 发明专利

JP2004359998A Method for manufacturing metallic member having compound-particle-dispersed alloy layer, and slide member 审中-公开
公开(公告)号：JP2004359998A
公开(公告)日：2004-12-24
申请号：JP2003158787
申请日：2003-06-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： CHIKAZAKI MITSUO , KUNIYA JIRO , KIYOTOKI YOSHIHISA , SAKAMOTO AKIRA , FURUSAWA SATOSHI
IPC分类号： B23K20/00 , B22F3/15 , B22F3/20 , B22F7/08 , B23K101/04 , C22C1/05 , C22C19/05
CPC分类号： B22F7/08 , B22F2998/10 , Y10T428/12063 , B22F3/1208 , B22F3/20 , B22F3/15
摘要： PROBLEM TO BE SOLVED: To manufacture a metallic member having an alloy layer of dispersing hard compound particles therein, on the surface, without using a jointing method such as welding. SOLUTION: This method for manufacturing the metallic member comprises sealing the powder of the alloy containing a compound in a tubular container, and hot-isostatic-forming and/or hot-extruding the container in the state, to thereby divide the compound and metallically combine powders with each other. In the above step, the metallic member may be inserted into the container, or alternatively when the metallic member is tubular, the container is formed of the material of the metallic member. Then, the container is machined into the metallic member having the alloy layer with the hard compound particles dispersed therein, on the surface. The metallic member having the alloy layer with the hard compound particles dispersed therein, on the surface, is manufactured without using the jointing method such as welding. COPYRIGHT: (C)2005,JPO&NCIPI

8. 发明专利

JP2003215289A ATOMIC POWER PLANT COMPRISING NEUTRAL-SUBSTANCE INJECTION SYSTEM 审中-公开
公开(公告)号：JP2003215289A
公开(公告)日：2003-07-30
申请号：JP2002009387
申请日：2002-01-18
申请人： HITACHI LTD
发明人： SAKAI MASANORI , TAKAMORI YOSHIYUKI , WATANABE RYUJI , KUNIYA JIRO , AKAMINE KAZUHIKO , WADA YOICHI , ISHIDA KAZUNARI
IPC分类号： G21D3/08 , G21D1/00
摘要： PROBLEM TO BE SOLVED: To provide a technique which lowers a corrosion potential irrespective of a periodical inspection or during an operation and which can obtain a high dose reduction effect by a short-period injection. SOLUTION: The injection system by which a neutral active substance formed in such a way that one or both of a component used to lower the corrosion potential of a plant structure material and a component used to lower a radiation dose are dispersed to a neutral substance is injected into cooling water inside a pressure vessel 8 of the atomic power plant is installed. COPYRIGHT: (C)2003,JPO

9. 发明专利

JP2000234144A CARBON STEEL FOR NUCLEAR POWER PLANT, ITS PRODUCTION AND NUCLEAR POWER PLANT 失效
公开(公告)号：JP2000234144A
公开(公告)日：2000-08-29
申请号：JP3232099
申请日：1999-02-10
申请人： HITACHI LTD
发明人： URAYAMA YOSHINAO , KUNIYA JIRO
IPC分类号： G21C19/307 , C21D6/00 , C22C38/00 , C22C38/04 , C22C38/16 , G21D1/00
摘要： PROBLEM TO BE SOLVED: To provide carbon steel for a nuclear power plant having more excellent corrosion cracking resistance, to provide a method for producing it and to provide a nuclear power plant. SOLUTION: This carbon steel for a nuclear power plant is the one having a compsn. composed of, by weight, 0.1 to 0.35% C, 0.1 to 0.5% Si, 0.3 to 1.5% Mn, and the balance substantially Fe and having a martensitic structure of >=90% by area ratio by executing quenching. The nuclear power plant uses the carbon steel for piping and apparatus.

10. 发明专利

JPH10170693A CORROSION CRACKING RESISTANCE IMPROVING METHOD OF NUCLEAR REACTOR PIPING 失效
公开(公告)号：JPH10170693A
公开(公告)日：1998-06-26
申请号：JP33333896
申请日：1996-12-13
申请人： HITACHI LTD
发明人： URAYAMA YOSHINAO , KUNIYA JIRO , ANDO MASASHI
IPC分类号： G21D1/00
摘要： PROBLEM TO BE SOLVED: To improve corrosion cracking resistance of carbon steel piping, carbon steel welded piping and an apparatus by completely removing cooling water stagnating in the piping after operation of a nuclear reactor is stopped. SOLUTION: Even if drain processing of a coolant is performed after operation is stopped, cooling water stagnates in piping by a part. A method of sending a hot blast into a piping inside part, a method of heating a cooling water stagnating part by a heating coil from a pipe outside surface and a method of spraying a hot blast on the stagnating part from outside of a pipe, exist as a processing method of removing the cooling water. In a hot blast sending method, a hot blast of 200 to 300 deg.C not less than 50 deg.C is sent into at 500cc/sec or more. It is heated to 200 to 300 deg.C not less than 100 deg.C by the heating coil, and at hot blast spraying time, a temperature is set to the same temperature, and wind speed is set not less than 500cc/sec. It is effective when completely evaporated and removed by such heat treatment. Therefore, since a carbon steel apparatus and a carbon steel welded structure having excellent corrosion cracking resistance can be formed in a BWR reactor water environment, safety of a BWR is secured, and the service life of a nuclear power plant can be lengthened.

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