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公开(公告)号：US5494539A
公开(公告)日：1996-02-27
申请号：US297051
申请日：1994-08-29
申请人： Hiroshi Tsujimura , Yasumasa Tamai , Masayuki Kurihara , Seiichi Toyoda , Yutaka Watanabe , Koichi Kurosawa
发明人： Hiroshi Tsujimura , Yasumasa Tamai , Masayuki Kurihara , Seiichi Toyoda , Yutaka Watanabe , Koichi Kurosawa
CPC分类号： B23P6/04 , C21D1/00 , C21D2221/00
摘要： By applying spot welding along a crack which has occurred in an austenitic stainless steel structure without use of welding material so that spot welds are connected, melting and solidifying of the crack can be achieved, thereby to provide a metal structure which is rich with delta ferrite of the austenitic stainless steel structure or prevent propagation of the crack by enclosing it into the interior of the austenitic stainless steel structure.
摘要翻译： 通过在不使用焊接材料的情况下沿着奥氏体不锈钢结构中发生的裂纹进行点焊，使得点焊连接，可以实现裂纹的熔融固化，从而提供富含δ铁素体的金属结构体 的奥氏体不锈钢结构，或通过将其包围在奥氏体不锈钢结构的内部来防止裂纹扩展。
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公开(公告)号：US5305361A
公开(公告)日：1994-04-19
申请号：US8718
申请日：1993-01-25
申请人： Kunio Enomoto , Masahiro Otaka , Koichi Kurosawa , Hideyo Saito , Hiroshi Tsujimura , Yasumasa Tamai , Keiichi Uraki , Masahito Mochizuki
发明人： Kunio Enomoto , Masahiro Otaka , Koichi Kurosawa , Hideyo Saito , Hiroshi Tsujimura , Yasumasa Tamai , Keiichi Uraki , Masahito Mochizuki
CPC分类号： G21C19/00 , B05B15/061 , B05B17/0615 , C21D7/06 , G21Y2002/201 , G21Y2004/30 , G21Y2004/40
摘要： A water jet peening method in which a pressurized water jet flow containing cavities is jetted through a nozzle having a velocity increasing orifice portion and a horn-like jetting hole formed continuously with the velocity increasing orifice portion to impinge against a surface of a metallic material immersed in water and to cause the cavities to collapse at the surface of the metallic member, and a tensile plastic deformation is caused in a surface layer of the metallic material by a local high pressure generated by the impingement and the collapse so that a residual tensile stress in the surface of the metallic member is reduced. In this method, the nozzle is vibrated so that vibration-induced cavities are formed in the vicinity of a nozzle wall surface, and the vibration-induced cavities are caused to impinge against the surface of the metallic member by the pressurized water jet flow containing cavities. It is thereby possible to promote the generation of cavities even in a case where pure water existing in a nuclear reactor and scant of nuclei from which cavities will be generated is used in peening of an internal structual member of the reactor.
摘要翻译： 一种喷水喷丸法，其中通过具有速度增加孔部分的喷嘴喷射含有空腔的加压水射流，并且与增速孔部分连续形成的喇叭形喷射孔冲击浸入金属材料的表面 并导致空腔在金属构件的表面处塌陷，并且通过由冲击和塌陷产生的局部高压在金属材料的表面层中引起拉伸塑性变形，使得残余拉伸应力 在金属构件的表面减少。 在该方法中，喷嘴被振动，使得在喷嘴壁表面附近形成振动引起的空腔，并且使振动引起的空腔通过包含加压水射流的空腔与金属构件的表面碰撞 。 因此，即使在核反应堆中存在的纯水和将产生空腔的细小核的情况下，也可以促进空腔的产生，从而在反应器的内部结构构件的喷丸处理中使用。
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公开(公告)号：US5938954A
公开(公告)日：1999-08-17
申请号：US747677
申请日：1996-11-12
申请人： Tsutomu Onuma , Toshimi Matsumoto , Akira Onuma , Mitsuo Nakamura , Choichi Asano , Yasumasa Tamai , Hiroo Koide , Masayuki Kurihara , Takao Funamoto , Fuminori Ishikawa
发明人： Tsutomu Onuma , Toshimi Matsumoto , Akira Onuma , Mitsuo Nakamura , Choichi Asano , Yasumasa Tamai , Hiroo Koide , Masayuki Kurihara , Takao Funamoto , Fuminori Ishikawa
CPC分类号： B23K26/122
摘要： A submerged laser beam irradiation equipment provides a high quality submerged laser beam processing of a submerged workpiece using only a small amount of a gas. The submerged laser beam irradiation equipment has: a focus lens for focusing a laser beam; a mirror tube which houses the lens; a first nozzle operating to cover the front end of the mirror tube in an irradiating direction of the laser beam; a skirt portion provided at the front end of the first nozzle for preventing water intrusion thereinto; and a shutter mechanism operable to open and close and provided between said skirt portion and said mirror tube for preventing water intrusion into said mirror tube.
摘要翻译： 浸没式激光束照射设备仅使用少量气体提供浸没式工件的高质量浸没式激光束处理。 浸没式激光束照射设备具有：聚焦激光束的聚焦透镜; 容纳镜头的镜管; 第一喷嘴，其操作以沿着激光束的照射方向覆盖镜管的前端; 裙部，设置在第一喷嘴的前端，用于防止水侵入其中; 以及可操作以打开和关闭并设置在所述裙部和所述镜管之间的挡板机构，用于防止水侵入所述镜管。
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公开(公告)号：US5022936A
公开(公告)日：1991-06-11
申请号：US445535
申请日：1989-12-04
CPC分类号： C21D1/00 , C21D9/50 , B23K2203/05 , Y10S148/903
摘要： A method for improving a property of a weld of an austenitic stainless steel which is a part of a structure being brought into contact with a corrosive fluid at a region having been affected by welding heat on both of opposed surfaces, comprising the steps of: cooling said thermally affected region on one of said opposed surfaces; and simultaneously with said cooling step, applying a melting treatment to the other surface, thereby changing the melting treatment portion into a micro structure that contains delta (.delta.) ferrite and is superior in corrosion resistance property. The latter surface is improved in high tensile stress generated by the welding work. Namely, its stress is reduced. The melting heat for said melting treatment is obtained by application of high density energy.
摘要翻译： 一种用于改善奥氏体不锈钢的焊接性能的方法，所述奥氏体不锈钢是在相对的表面上受到焊接热影响的区域与腐蚀性流体接触的结构的一部分，包括以下步骤：冷却 所述热影响区域位于所述相对表面之一上; 并且与所述冷却步骤同时对另一个表面进行熔融处理，从而将熔融处理部分改变为含有δ（δ）铁素体的微结构，并且具有优异的耐腐蚀性。 后者表面改善了焊接工作产生的高拉伸应力。 即，其应力降低。 通过施加高密度能量获得用于所述熔融处理的熔化热。
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5.发明授权
公开(公告)号：US5977515A
公开(公告)日：1999-11-02
申请号：US539074
申请日：1995-10-04
申请人： Keiichi Uraki , Toshitaka Satsuta , Akira Onuma , Mitsuo Nakamura , Tsutomu Onuma , Toshimi Matsumoto , Yasumasa Tamai , Hiroshi Yamauchi , Eisaku Hayashi , Ren Morinaka
发明人： Keiichi Uraki , Toshitaka Satsuta , Akira Onuma , Mitsuo Nakamura , Tsutomu Onuma , Toshimi Matsumoto , Yasumasa Tamai , Hiroshi Yamauchi , Eisaku Hayashi , Ren Morinaka
IPC分类号： G21C19/02 , B23K9/00 , B23K26/00 , B23K26/02 , B23K26/03 , B23K26/06 , B23K26/067 , B23K26/08 , B23K26/12 , B23K26/14 , B23K37/00 , C21D1/09 , C21D9/00 , C22C38/00 , C22C38/50 , G21F9/30
CPC分类号： B23K26/067 , B23K26/122 , B23K26/1423 , B23K26/1429 , B23K26/146 , B23K26/1476
摘要： An underwater laser processing system has a laser torch; a laser torch driving mechanism for changing a laser emission position of the laser torch; and a chamber with one end opened to an external environment, which contains the laser torch; wherein a partitioning wall for preventing permeation of water is provided between a free end of the chamber and the laser torch. The system is used for detecting a sensitized portion and repairing it at one time using a sensitization detecting arrangement. Moreover, it is used for forming an alloying layer by melting a sprayed coating film, and for forming a new surface layer by emitting a laser beam through a solution containing a metal component.
摘要翻译： 水下激光加工系统具有激光焊枪; 用于改变激光束的激光发射位置的激光焊枪驱动机构; 以及具有一端开放到包含激光手电筒的外部环境的室; 其特征在于，在所述室的自由端与所述激光焊枪之间设置有用于防止水渗透的分隔壁。 该系统用于检测敏化部分并使用敏化检测装置一次修复。 此外，其用于通过熔化喷涂的涂膜来形成合金层，并且通过通过包含金属成分的溶液发射激光束来形成新的表面层。
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公开(公告)号：US4247037A
公开(公告)日：1981-01-27
申请号：US56238
申请日：1979-07-10
申请人： Yasumasa Tamai , Teruo Matsumoto
发明人： Yasumasa Tamai , Teruo Matsumoto
CPC分类号： B23K9/235 , B23K9/0282
摘要： In welding tubular members of stainless steel, metal is deposited by build-up welding on a portion of the inner surface of each tubular member adjacent an edge thereof where welding gives a heat affection and exposed to a corrosive fluid when in service, and melting a portion of the inner surface of each tubular member in a zone adjacent to the metal deposited by build-up welding and affected by the heat of the build-up welding, said portion being exposed to the corrosive fluid when in service. Following the completion of these two steps, the tubular members of stainless steel are welded at the edges thereof to be joined. The method has the effect of preventing the occurrence of stress corrosion cracking at the inner surface of the piping which is near the joint and exposed to the corrosive fluid.
摘要翻译： 在焊接不锈钢管状部件时，金属通过堆积焊接沉积在邻近其边缘的每个管状部件的内表面的一部分上，其中焊接产生热影响并在使用时暴露于腐蚀性流体，并熔化 每个管状构件的内表面的部分在与通过堆积焊接沉积的金属相邻的区域中，并且受到积聚焊接的热量的影响，所述部分在使用时暴露于腐蚀性流体。 完成这两个步骤后，不锈钢的管状构件在其边缘被焊接以便接合。 该方法具有防止在接头附近和暴露于腐蚀性流体的管道内表面发生应力腐蚀开裂的效果。
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公开(公告)号：US4601872A
公开(公告)日：1986-07-22
申请号：US600905
申请日：1984-04-16
申请人： Yoshio Yada , Yasumasa Tamai , Tsugio Iwama
发明人： Yoshio Yada , Yasumasa Tamai , Tsugio Iwama
IPC分类号： G21C7/16 , G21C13/028 , G21C17/00 , G21C19/20
CPC分类号： G21C13/028 , G21C17/00 , Y02E30/40
摘要： A water sealing device suitable for use when a control rod drive housing welded to a stub tube and extends through a wall of a reactor pressure vessel is replaced, singly or with the stub tube, by a new one, including a sealing cylinder temporarily inserted in a control rod guide tube opening for providing a cylindrical space in which the control rod drive housing is located to shut out water in a core from the vicinity of the control rod drive housing. The sealing cylinder has a centering mechanism including a tester support portion located on an inner peripheral surface of the sealing cylinder for supporting an alignment tester for testing the alignment of centering targets mounted on upper and lower end portions of the control rod drive housing, and a tapered centering portion mounted on an outer peripheral surface of the sealing cylinder and brought into contact with a wall of the control rod guide tube opening when the sealing cylindr is temporarily inserted therein, to mount the sealing cylinder concentrically in the control rod guide tube opening through the tapered centering portion. The sealing cylinder also has a multiple seal located at a lower end portion of the sealing cylinder to allow the sealing cylinder to be brought into sealing contact with an inner wall surface of the reactor pressure vessel. Compressed air is introduced into a space in the multiple seal through the sealing cylinder.
摘要翻译： 一种适用于当焊接到短管并延伸通过反应堆压力容器的壁的控制棒驱动器壳体被单独地或与短管更换的新的封闭装置时，其包括临时插入的密封圆筒 用于提供控制棒驱动器壳体所在的圆柱形空间的控制杆引导管开口，以从控制杆驱动器壳体的附近封闭芯中的水。 密封圆筒具有定心机构，其包括位于密封圆筒的内周面上的测试器支撑部分，用于支撑用于测试安装在控制棒驱动壳体的上端部和下端部上的定中心的对准的定位测试器，以及 锥形定心部分安装在密封圆筒的外周表面上，当密封圆柱体暂时插入其中时与控制棒导向管开口的壁接触，将密封圆筒同心地安装在控制棒导管开口中 锥形对中部分。 密封圆筒还具有位于密封圆筒的下端部的多重密封件，以使密封圆筒与反应堆压力容器的内壁表面密封接触。 压缩空气通过密封圆筒引入多重密封件的空间。
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公开(公告)号：US4262517A
公开(公告)日：1981-04-21
申请号：US63449
申请日：1979-08-03
CPC分类号： B21D1/08 , B21D22/105
摘要： In a method of correcting a distorted pipe end to an original substantially true circular cross-section, external loads are applied to the outer peripheral surface of the pipe adjacent to the end thereof to forcibly deform the pipe end to the substantially true circular cross-section. The external loads are maintained to keep this substantially true circular cross-sectional shape while an internal pressure is applied to the inner peripheral surface of the pipe end until a circumferential stress produced in the pipe reaches an amount which exceeds the yield stress of the pipe to give a radial permanent deformation to the pipe for thereby producing a circumferentially uniformly distributed residual stress in the pipe.
摘要翻译： 在将变形的管端校正为原始基本上真实的圆形横截面的方法中，外部负载施加到邻近管的端部的管的外周表面，以将管端强制变形为基本上真实的圆形横截面 。 保持外部负载以保持这个基本上真实的圆形横截面形状，同时内管施加到管端的内周面，直到管道产生的周向应力达到超过管的屈服应力的量 对管道产生径向永久变形，从而在管道中产生周向均匀分布的残余应力。
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公开(公告)号：US5674419A
公开(公告)日：1997-10-07
申请号：US498485
申请日：1995-07-05
CPC分类号： B23K31/02
摘要： Disclosed is a highly reliable weld repairing method to repair a crack defect in structures and apparatus inside pressure vessels of nuclear reactors, while preventing generation of new crack defects in the structures and apparatus during the repairing. These structures and apparatus are made of any of stainless steel and Ni-base alloys, and are irradiated with high energy corpuscular ray during operating period of the reactor. The repairing method includes the steps of eliminating a region of the structure or the apparatus including a portion having the crack defect, and executing spot welding at a surface of the region continuously or interruptedly in a manner so as to form a first welded layer in a manner that each of the spot welded spots is half-overlapped with adjacent welded spots. Additionally, welding for forming at least a second layer, on the first welded layer, so that the at least a second layer is not deeper than a weld penetration thickness of the first welded layer can be performed.
摘要翻译： 公开了一种高度可靠的焊接修复方法，用于修复核反应堆压力容器内的结构和设备中的裂纹缺陷，同时防止在修复期间在结构和设备中产生新的裂纹缺陷。 这些结构和装置由不锈钢和镍基合金中的任何一种制成，并且在反应器运行期间被照射高能量红外线。 修复方法包括以下步骤：消除结构的区域或包括具有裂纹缺陷的部分的设备，并且以连续或间断的方式在该区域的表面上进行点焊以形成第一焊接层 每个点焊点与相邻焊接点半重叠的方式。 此外，可以进行在第一焊接层上形成至少第二层的至少第二层的焊接，使得至少第二层不比第一焊接层的焊接穿透厚度更深。
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公开(公告)号：US4440339A
公开(公告)日：1984-04-03
申请号：US272882
申请日：1981-06-12
申请人： Yasumasa Tamai , Takaichi Koyama
发明人： Yasumasa Tamai , Takaichi Koyama
IPC分类号： G21C7/16 , F16L41/00 , G21C7/10 , G21C13/036 , B23K31/06
CPC分类号： G21C7/10 , G21C13/036 , G21Y2002/402 , G21Y2002/501 , G21Y2004/50 , G21Y2004/501 , G21Y2004/504 , Y02E30/39
摘要： A method of repairing the housing of a control rod driving system of a nuclear reactor, the housing being inserted through the wall of a pressure vessel of the reactor into a cylindrical sleeve secured to the inner surface of the vessel, which housing is jointed by welding to the cylindrical sleeve. The method comprises the steps of: cutting the housing in the circumferential direction of the housing at a position defined between the weld joint and the inner surface of the reactor vessel and surrounded by the cylindrical sleeve, thereby to divide the housing into a first housing part still attaching to the weld joint and another removable housing part; removing the removable other housing part; inserting a second housing part into said cylindrical sleeve through the wall of the nuclear reactor vessel; and uniting the first housing part and the second housing part by welding thereby to form a new housing for the control rod driving system.
摘要翻译： 一种修复核反应堆的控制杆驱动系统的壳体的方法，该壳体通过反应器的压力容器的壁插入固定到容器的内表面的圆柱形套筒中，该壳体通过焊接而接合 到圆柱形套筒。 该方法包括以下步骤：在壳体的圆周方向上在限定在焊接接头和反应堆容器的内表面之间的位置处切割壳体并被圆柱形套筒包围，从而将壳体分成第一壳体部分 仍然附接到焊接接头和另一个可移除的壳体部分; 移除可拆卸的其他外壳部件; 通过核反应堆容器的壁将第二壳体部件插入到所述圆柱形套筒中; 并且通过焊接使第一壳体部分和第二壳体部分结合从而形成用于控制杆驱动系统的新壳体。
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