Method for welding of end plug of control rod
    11.
    发明授权
    Method for welding of end plug of control rod 失效
    控制杆端塞焊接方法

    公开(公告)号:US5401933A

    公开(公告)日:1995-03-28

    申请号:US154557

    申请日:1993-11-19

    申请人: Eiji Yoneda

    发明人: Eiji Yoneda

    CPC分类号: B23K11/0935

    摘要: A method is disclosed for welding an end plug to an open end of a surface-coated tube in order to provide a control rod. First, the end plug is brought into pressed abutment with the open end of the surface-coated tube. Then, resistance welding is performed in order to join the end plug with the open end of the surface-coated tube by applying electric current between the surface-coated tube and the end plug to heat the same while keeping the end plug pressed in abutment with the open end of the surface-coated tube. With these procedures, even when a surface-coated tube having a hard coating formed over its entire length is employed, the coating material is prevented from dissolving into the welded portion and therefore ensures an excellent welding quality, and the resulting control rod exhibits excellent characteristics over its entire length.

    摘要翻译: 公开了一种用于将端塞焊接到表面涂覆的管的开口端以便提供控制棒的方法。 首先,将端塞与表面涂覆管的开口端压入邻接。 然后,通过在表面涂覆的管和端塞之间施加电流来使端塞与表面涂覆管的开口端接合来进行电阻焊接,以在保持端塞压靠的状态下对其进行加热 表面涂层管的开口端。 通过这些方法,即使采用在其整个长度上形成有硬涂层的表面涂布管,也可以防止涂层溶解在焊接部分中,从而确保优异的焊接质量,并且所得到的控制棒具有优异的特性 在整个长度。

    Lactone copolymer and radiation-sensitive resin composition
    14.
    发明申请
    Lactone copolymer and radiation-sensitive resin composition 有权
    内酯共聚物和辐射敏感树脂组合物

    公开(公告)号:US20090053649A1

    公开(公告)日:2009-02-26

    申请号:US11579646

    申请日:2005-05-02

    IPC分类号: G03F7/004 C08F24/00

    摘要: A radiation-sensitive resin composition excelling in basic properties as a resist such as sensitivity, resolution, and the like, having a wide depth of focus (DOF) to both a line-and-space pattern and an isolated space pattern, and exhibiting a minimal line width change due to fluctuation of a bake temperature, and having a small line width limit in which the line pattern destroying phenomenon does not occur, and a lactone-containing copolymer useful as a resin component of the composition are provided.The lactone-containing copolymer is represented by a copolymer of the following compounds (1-1), (2-1), and (3-1). The radiation-sensitive resin composition comprises (a) the lactone-containing copolymer and (b) a photoacid generator.

    摘要翻译: 作为具有对于线间距图案和隔离空间图案的宽焦点(DOF)的宽灵敏度,分辨率等的抗蚀剂的基本性能优异的辐射敏感性树脂组合物, 由于烘烤温度的波动引起的线宽变化最小,并且具有不发生线型破坏现象的小线宽限制,并且提供可用作该组合物的树脂成分的含内酯共聚物。 含有内酯的共聚物由以下化合物(1-1),(2-1)和(3-1)的共聚物表示。 辐射敏感性树脂组合物包含(a)含内酯共聚物和(b)光酸产生剂。

    Fuel rod for light water reactor and method for manufacturing the same
    16.
    发明授权
    Fuel rod for light water reactor and method for manufacturing the same 失效
    轻水反应堆用燃料棒及其制造方法

    公开(公告)号:US6014418A

    公开(公告)日:2000-01-11

    申请号:US908694

    申请日:1997-08-08

    IPC分类号: G21C3/06 G21C3/07 G21C21/02

    摘要: A fuel rod for a light water reactor comprises a cladding tube which comprises a zirconium alloy having a composition including 0.6 to 2.0% by weight of Nb, 0.5 to 1.5% by weight of Sn, 0.05 to 0.3% by weight of Fe, and the balance being Zr and incidental impurities; uranium oxide fuel pellets packed in the cladding tube; and end plugs comprising a zirconium alloy and closing both ends of the cladding tube. The cladding tube is sealed by TIG welding with the end plugs. Grain boundaries in each heat affected zone of the cladding tube, which are adjacent to a bead formed by TIG welding, have structural compositions including 4 to 30% by weight of Nb, and 0.9 to 20% by weight of Fe.

    摘要翻译: 一种用于轻水反应器的燃料棒包括一个包层管,它包括一种锆合金,其组成包括Nb为0.6-2.0%,Sn为0.5-1.5%,Fe为0.05-0.3%,以及 余量为Zr和杂质; 包裹在包壳管内的氧化铀燃料颗粒; 以及包括锆合金并封闭包层管的两端的端塞。 包层管通过TIG焊接与端塞密封。 与通过TIG焊接形成的焊道相邻的包覆管的每个受热影响区域中的晶界具有包含4至30重量%的Nb和0.9至20重量%的Fe的结构组成。

    Method for welding of fuel rod
    17.
    发明授权
    Method for welding of fuel rod 失效
    燃料棒焊接方法

    公开(公告)号:US5374800A

    公开(公告)日:1994-12-20

    申请号:US154559

    申请日:1993-11-19

    申请人: Eiji Yoneda

    发明人: Eiji Yoneda

    摘要: A resistance welding method for a fuel rod is presented in which the gas seal opening is closed with a sealing material of the same composition as the end plug material. The method enable to perform welding stably in a pressurized welding chamber, and the process is amenable to automation. The sealing material body is made of a wire, and is pressed against the conical shaped opening provided on the end plug. The welding method avoids contaminating the weld with undesirable impurities from the electrode material, and the welding operations is designed so that there is no need to reshape the end of the electrode or adjust the gap between the sealing material and the seal opening.

    摘要翻译: 提出了一种用于燃料棒的电阻焊接方法,其中气密封开口用与端塞材料相同组成的密封材料封闭。 该方法能够在加压焊接室中稳定地进行焊接,并且该工艺适于自动化。 密封材料主体由电线制成,并被压靠在设置在端塞上的锥形开口上。 该焊接方法避免了焊料与电极材料的不良杂质的污染,并且焊接操作被设计成不需要重新形成电极的端部或调节密封材料和密封开口之间的间隙。

    Device for turning over printed sheets
    18.
    发明授权
    Device for turning over printed sheets 失效
    用于翻转印张的装置

    公开(公告)号:US5031893A

    公开(公告)日:1991-07-16

    申请号:US426236

    申请日:1989-10-25

    IPC分类号: B41J13/00 B41J13/08 B65H29/14

    摘要: In a printer, a unit for turning over a sheet comprises: a conveying roll provided downstream of a printer head; a top roll and a bottom roll which are rotatably coupled to the front end and the rear end of a swingable link, respectively; and at least one elastic endless belt reeved around the top roll and bottom roll, the swingable link being swingable about the axis of the top roll with the top roll into contact with the conveying roll through the endless belt, and a control mechanism for operating the link so that it is swung down for a first half of a period of time for which a sheet passes through the conveying roll and the top roll, and swung up for the second half.