公开(公告)号：US06735266B1

公开(公告)日：2004-05-11

申请号：US10274040

申请日：2002-10-21

Applicant: Michio Nakayama ,  Takehiro Seto ,  Noriaki Goto ,  Shouji Adachi

Inventor： Michio Nakayama ,  Takehiro Seto ,  Noriaki Goto ,  Shouji Adachi

IPC: G21C710

CPC classification number: G21C7/113 ,  B23K26/24 ,  B23K26/32 ,  B23K33/00 ,  B23K2103/05 ,  B23K2103/50 ,  G21C21/00 ,  G21C21/18 ,  G21Y2002/204 ,  G21Y2002/30 ,  Y02E30/31 ,  Y02E30/39

Abstract: A tie rod having a cruciform cross section is provided with steps for fixing sheaths at tips of cruciform arms of the tie rod; the tips of each of sheaths are fitted onto the steps of the tie rod, each of the sheaths having a U-shaped cross section; and each of the sheaths is fixed to the tie rod by performing a laser welding using a YAG (yttrium aluminum garnet) laser beam or a CO2 laser beam with the sheath being fitted onto the tie rod to achieve a continuous weld of at least a part of the tie rod in a longitudinal direction thereof. An axial center position of the beam is shifted from an end face position of the step of the tie rod at least toward an axis center of the tie rod.

Abstract translation: 具有十字形横截面的拉杆设置有用于在拉杆的十字形臂的尖端固定护套的台阶; 每个护套的尖端装配在拉杆的台阶上，每个护套具有U形横截面; 并且每个护套通过使用YAG（钇铝石榴石）激光束或CO 2激光束进行激光焊接而固定到拉杆，其中护套被安装在拉杆上以实现至少一部分的连续焊接 拉杆的长度方向。 梁的轴向中心位置至少朝向拉杆的轴心中心从衔铁的台阶的端面位置偏移。

公开(公告)号：US5862194A

公开(公告)日：1999-01-19

申请号：US814337

申请日：1997-03-11

Applicant: Tadashi Fujieda ,  Masahisa Inagaki ,  Iwao Takase ,  Junjiro Nakajima ,  Rinichi Asano ,  Takehiro Seto

Inventor： Tadashi Fujieda ,  Masahisa Inagaki ,  Iwao Takase ,  Junjiro Nakajima ,  Rinichi Asano ,  Takehiro Seto

IPC: C22C16/00 ,  C22F1/18 ,  G21C3/07 ,  G21C3/324 ,  C22F1/16

CPC classification number: C22C16/00 ,  C22F1/186 ,  G21C3/07 ,  G21Y2004/10 ,  Y02E30/40

Abstract: The present invention provides a zirconium based alloy member which has very small deformation of elongation and bow occurring due to irradiation growth, a method of manufacturing it, and particularly an channel box for an atomic reactor fuel assembly. A zirconium based alloy plate member having a width of not less than 100 mm and a long length, containing not more than 5 wt % Nb and/or not more 5 wt % Sn, the member having (0001) orientation (Fl value) of hexagonal Zr with respect to longitudinal direction ranging from 0.20 to 0.35, the difference in Fl between the middle and the end being not more than the value calculated from (0.0935.times.Fl-0.00585) and an amount of bow at neutron irradiation of 35 GWd/t which bow occurs in the channel box for a reactor being not more than 2.16 mm.

Abstract translation: 本发明提供一种锆基合金构件，其由于照射生长而具有非常小的伸长变形和弓形，其制造方法，特别是用于原子反应堆燃料组件的通道箱。 一种宽度不小于100mm，长度不大于5重量％的Nb和/或不多于5重量％Sn的锆基合金板构件，具有（0001）取向（F1值）为 相对于纵向为0.20〜0.35的六方晶相，中间和末端之间的F1的差不大于由（0.0935xFl-0.00585）计算的值，中子照射下的弓的量为35GWd / t 在弯道出现弯道不大于2.16mm的反应堆。

公开(公告)号：US5872826A

公开(公告)日：1999-02-16

申请号：US882335

申请日：1997-06-25

Applicant: Tadashi Fujieda ,  Masahisa Inagaki ,  Iwao Takase ,  Yoshitaka Nishino ,  Junichi Yamashita ,  Akihiro Yamanaka ,  Kenichi Ito ,  Junjiro Nakajima ,  Takehiro Seto

Inventor： Tadashi Fujieda ,  Masahisa Inagaki ,  Iwao Takase ,  Yoshitaka Nishino ,  Junichi Yamashita ,  Akihiro Yamanaka ,  Kenichi Ito ,  Junjiro Nakajima ,  Takehiro Seto

IPC: G21C3/30 ,  G21C3/324 ,  G21C3/326 ,  G21C3/62 ,  G21C7/04

CPC classification number: G21C3/324 ,  G21C7/04 ,  G21Y2002/103 ,  G21Y2002/302 ,  G21Y2002/304 ,  G21Y2004/20 ,  G21Y2004/30 ,  G21Y2004/40 ,  Y02E30/39

Abstract: A channel box for a nuclear-reactor fuel assembly (MOX fuel assembly) containing plutonium, capable of properly controlling the excess reactivity without mixing neutron absorber or burnable poison into a fuel rod, and a channel box for a nuclear-reactor fuel assembly which does not form any gap between the channel box and members containing burnable poison in the channel box and in which the burnable poison does not directly contact with reactor water.

Abstract translation: 用于含有钚的核反应堆燃料组件（MOX燃料组件）的通道箱，能够适当地控制过量反应性而不将中子吸收剂或可燃毒物混入燃料棒中，以及用于核反应堆燃料组件的通道箱 通道箱和通道箱中含有可燃毒物的物质之间不会形成任何间隙，其中可燃毒物不直接与反应堆水接触。

公开(公告)号：US20050105668A1

公开(公告)日：2005-05-19

申请号：US10798354

申请日：2004-03-12

Applicant: Michio Nakayama ,  Takehiro Seto ,  Noriaki Goto ,  Shouji Adachi

Inventor： Michio Nakayama ,  Takehiro Seto ,  Noriaki Goto ,  Shouji Adachi

IPC: G21C7/113 ,  B23K26/24 ,  B23K26/32 ,  B23K33/00 ,  G21C1/04 ,  G21C7/06 ,  G21C7/10 ,  G21C21/00

CPC classification number: G21C7/113 ,  B23K26/24 ,  B23K26/32 ,  B23K33/00 ,  B23K2103/05 ,  B23K2103/50 ,  G21C21/00 ,  G21C21/18 ,  Y02E30/31 ,  Y02E30/39

Abstract: A tie rod having a cruciform cross section is provided with steps for fixing sheaths at tips of cruciform arms of the tie rod; the tips of each of sheaths are fitted onto the steps of the tie rod, each of the sheaths having a U-shaped cross section; and each of the sheaths is fixed to the tie rod by performing a laser welding using a YAG laser beam or a CO2 laser beam with the sheath being fitted onto the tie rod to achieve a continuous weld of at least a part of the tie rod in a longitudinal direction thereof. An axial center position of the beam is shifted from an end face position of the step of the tie rod at least toward an axis center of the tie rod.

Abstract translation: 具有十字形横截面的拉杆设置有用于在拉杆的十字形臂的尖端固定护套的台阶; 每个护套的尖端装配在拉杆的台阶上，每个护套具有U形横截面; 并且每个护套通过使用YAG激光束或CO 2激光束进行激光焊接而固定到拉杆上，其中护套被安装在拉杆上以实现连续焊接 拉杆的纵向方向的至少一部分。 梁的轴向中心位置至少朝向拉杆的轴心中心从衔铁的台阶的端面位置偏移。

公开(公告)号：US06882696B2

公开(公告)日：2005-04-19

申请号：US10409124

申请日：2003-04-09

Applicant: Michio Nakayama ,  Takehiro Seto ,  Noriaki Goto ,  Shouji Adachi

Inventor： Michio Nakayama ,  Takehiro Seto ,  Noriaki Goto ,  Shouji Adachi

IPC: G21C7/113 ,  B23K26/24 ,  B23K26/32 ,  B23K33/00 ,  G21C1/04 ,  G21C7/06 ,  G21C7/10 ,  G21C21/00

CPC classification number: G21C7/113 ,  B23K26/24 ,  B23K26/32 ,  B23K33/00 ,  B23K2103/05 ,  B23K2103/50 ,  G21C21/00 ,  G21C21/18 ,  G21Y2002/204 ,  G21Y2002/30 ,  Y02E30/31 ,  Y02E30/39

Abstract: A tie rod having a cruciform cross section is provided with steps for fixing sheaths at tips of cruciform arms of the tie rod; the tips of each of sheaths are fitted onto the steps of the tie rod, each of the sheaths having a U-shaped cross section; and each of the sheaths is fixed to the tie rod by performing a laser welding using a YAG laser beam or a CO2 laser beam with the sheath being fitted onto the tie rod to achieve a continuous weld of at least a part of the tie rod in a longitudinal direction thereof. An axial center position of the beam is shifted from an end face position of the step of the tie rod at least toward an axis center of the tie rod.

公开(公告)号：US06704386B2

公开(公告)日：2004-03-09

申请号：US10285421

申请日：2002-11-01

Applicant: Michio Nakayama ,  Takehiro Seto ,  Tatsuo Seki ,  Isao Kurihara

Inventor： Michio Nakayama ,  Takehiro Seto ,  Tatsuo Seki ,  Isao Kurihara

IPC: G21C307

CPC classification number: G21C3/324 ,  G21C21/00 ,  G21Y2004/201 ,  Y02E30/40

Abstract: A fuel channel box manufacturing method processes a fuel channel box of a zirconium-base alloy by a beta-quench treatment that heats the fuel channel box by a heating coil. The distance between the heating coil and the opposite walls of the fuel channel box is controlled so that temperature differences between the opposite walls of the fuel channel box are reduced. The fuel channel box of a zirconium-base alloy is heated at a temperature in a temperature range including &bgr;-phase temperatures so that temperature difference between the opposite walls is 50° C. or below. The fuel channel box manufacturing method is capable of manufacturing a fuel channel box that is not subject to significant irradiated bow even if a deflection is produced therein originally when the same is manufactured and of manufacturing the fuel channel box at a high production efficiency.

Abstract translation: 燃料通道箱制造方法通过加热线圈对燃料通道箱加热的β-淬火处理来处理锆基合金的燃料通道箱。 控制加热线圈与燃料通道箱的相对壁之间的距离，使得燃料通道箱的相对壁之间的温度差减小。 锆基合金的燃料通道箱在包括β相温度的温度范围内被加热，使得相对壁之间的温度差为50℃或更低。 燃料通道箱的制造方法能够制造即使在其制造时原来产生偏转并且以高生产效率制造燃料通道箱时，也不会受到显着的照射弓的燃料通道箱的影响。