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207 条记录 (耗时 0.019 秒)

    Method of producing heat-resistant high chromium ferritic/martensitic steel
    63.
    发明公开
    Method of producing heat-resistant high chromium ferritic/martensitic steel 有权
    氟伐他汀

    公开(公告)号：EP1544312A1

    公开(公告)日：2005-06-22

    申请号：EP04078288.0

    申请日：2004-12-03

    申请人： Korea Atomic Energy Research Institute ,  Korea Hydro & Nuclear Power Co., Ltd.

    发明人： Ryu, Woo Seog ,  Kim, Sung Ho ,  Song, Byoung Jun ,  Hong, Jun Hwa

    IPC分类号： C21D1/28 ,  C22C38/22 ,  C22C38/26

    CPC分类号： C22C38/22 ,  C21D1/28 ,  C21D1/78 ,  C21D6/002 ,  C21D6/02 ,  C22C38/04 ,  C22C38/26

    摘要： Disclosed is a method of producing heat-resistant high chromium ferritic/martensitic steel, in detail, a method of producing the heat-resistant high chromium ferritic/martensitic steel, which includes melting, hot working, and heat treatment processes. In this regard, the heat treatment process includes a normalizing step at 1030 - 1100°C (first process), a first tempering step at 620 - 720°C (second process), and a second tempering step at 730 - 780°C (third process). In the heat-resistant high chromium ferritic/martensitic steel, chromium carbonitride with a size of tens of nanometers is distributed to greatly stabilize the structure of the martensite lath, thereby enabling the heat-resistant high chromium ferritic/martensitic steel to have superior impact properties and creep rupture strength. The heat-resistant high chromium ferritic/martensitic steel is usefully applied to nuclear fuel claddings, heat transfer tubes, and pipes of nuclear power plants, and pipes, tubes, turbines and the like for the boilers of fossil power plants, which must have superior creep rupture strength and impact properties at a high temperature of about 600°C.

    摘要翻译： 公开了耐热高铬铁素体/马氏体钢的制造方法，详细地说，是制造耐热高铬铁素体/马氏体钢的方法，其包括熔融，热加工和热处理工艺。 在这方面，热处理方法包括在1030-100℃（第一工序）的标准化步骤，620-720℃的第一回火步骤（第二工序）和730-780℃的第二回火步骤（ 第三个过程）。 在耐热高铬铁素体/马氏体钢中，分布有几十纳米的碳氮化铬，大大地稳定了马氏体板条的结构，从而使耐热的高铬铁素体/马氏体钢具有优异的冲击特性 和蠕变断裂强度。 耐火高铬铁素体/马氏体钢有效地应用于化石燃料电厂锅炉的核燃料包层，传热管和核电厂的管道以及管道，管道，涡轮机等，其必须具有优越性 蠕变断裂强度和冲击性能在高温约600℃

    METHOD FOR ISOTOPE SEPARATION OF THALLIUM
    64.
    发明公开
    METHOD FOR ISOTOPE SEPARATION OF THALLIUM 有权
    方法微量铊同位素分离

    公开(公告)号：EP1534408A1

    公开(公告)日：2005-06-01

    申请号：EP02781885.5

    申请日：2002-09-18

    申请人： Korea Atomic Energy Research Institute

    发明人： Jeong, Do-Young ,  Ko, Kwang-Hoon ,  Lim, Gwon ,  Kim, Cheol-Jung

    IPC分类号： B01D59/34

    CPC分类号： B01D59/34

    摘要： A method for isotope separation of thallium using laser beam is disclosed.The method comprises the steps of: (a) producing photons of a first frequency by a laser system, wherein said first frequency is about 378 nm; (b) producing photons of a second frequency by said laser system, wherein said second frequency is about 292 nm; (c) producing photons of a third frequency by said laser system, wherein said third frequency is in the range of 700 nm to 1400 nm; (d) applying said photons of said first, second and third frequencies to said vapor of said thallium, wherein said photons of said first frequency pump isotope-selectively a plurality of ground state thallium atoms through an excited state into a metastable state, and wherein said photons of said second frequency excite a plurality of metastable state thallium atoms to an intermediate, resonant state, and wherein said photons of said third frequency ionize a plurality of atoms in said intermediate, resonant state through continuum states; and (e) collecting said isotope ions. Thallium isotope can efficiently be separated with small scale facilities.

    Fabrication process of uranium foil having fine grains solidified rapidly from melt using roll, and the fabrication apparatus
    70.
    发明公开
    Fabrication process of uranium foil having fine grains solidified rapidly from melt using roll, and the fabrication apparatus 有权
    细粒度铀箔的制造过程中快速冷却熔体通过冷却辊和制造装置

    公开(公告)号：EP1203832A3

    公开(公告)日：2002-05-15

    申请号：EP01204159.6

    申请日：2001-10-30

    申请人： KOREA ATOMIC ENERGY RESEARCH INSTITUTE ,  Korea Electric Power Corporation

    发明人： Kim, Chang-Kyu ,  Kim, Ki-Hwan ,  Oh, Seok-Jin ,  Jang, Se-Jung ,  Kim, Eung-Soo

    IPC分类号： C22C43/00 ,  B22D11/06 ,  B22D11/14

    CPC分类号： B22D11/0697 ,  B22D11/0622 ,  C22C43/00

    摘要： The present invention is concerned with the fabrication process of low or high enrichment uranium and uranium alloy foil, and the fabrication apparatus therefor. Uranium (U) and uranium alloy [U-(A)Q-(B)X-(C)Y (Q: Al, Fe, Ni, Si, Cr, Zr element, X: Al, Fe, Ni, Si, Cr, Zr element, Y: Al, Fe, Ni, Si, Cr, Zr element, Q ≠ X ≠ Y, (A) ≤ 1 wt%, (B) ≤ 1 wt%, (C) ≤ 1 wt%)] foil are directly obtained from a melt, not through a vacuum induction melting & casting, ingot cutting, hot-rolling and heat-treatment process, but through melt spinning or a twin-roll casting process. Major advantages have been obtained as follows: 1) a simplified process without the hot-rolling process and heat-treatment process, 2) an improvement in productivity and process economics in foil fabrication, and 3) a high purity and a high quality of the foil.

    摘要翻译： 本发明涉及低或高浓缩铀和铀合金箔，及其所用制造装置的制造工艺。 铀（U）和铀合金的Au（A）Q-（B）X-（C）Y（Q：铝，铁，镍，硅，铬，Zr元素，X：铝，铁，镍，硅，铬 ，Zr元素，Y：选自Al，Fe，镍，硅，铬，元素的Zr，Q NotEqual X NotEqual Y，（A）≤1％（重量），（B）≤1％（重量），（C）≤1重量％）Ü 箔直接由熔体获得，而不是通过真空感应熔炼＆铸造，铸锭切割，热轧和热处理工艺，而是通过熔融纺丝或双辊铸造法。 主要优点havebeen如下制得：1）不带热轧工序和热处理工序的简化的工艺，2）改进在箔制造生产率和工艺经济性，以及3）一个高纯度和的高品质的 箔。