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1. 发明专利

JP2008055462A Method for producing welding joint 审中-公开
标题翻译：生产焊接接头的方法
公开(公告)号：JP2008055462A
公开(公告)日：2008-03-13
申请号：JP2006234854
申请日：2006-08-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OBATA KYOJI , ANZAI HIDEYA , KOIDE HIROO , RA SHOGUN , KATO MITSUO
IPC分类号： B23K35/30 , B23K9/167
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a highly reliable welding joint, regarding the production of a weld zone in a structure, in which welding defects such as a penetration fault are suppressed, and further, the weld zone has excellent material properties such as stress corrosion crack resistance.
SOLUTION: In the method for producing a welding joint by welding metal members, the material component of a welding wire used upon the welding of the metal members is controlled so that the content of sulfur (S) is 0.004 to 0.010%, and also, the content of ferrite based upon a dilong chart is 10 to 15%. According to this invention, regarding welding joint production in a welded structure including piping or the like, the method for producing a highly reliable welding joint using a TIG welding wire for an initial layer in which welding defects such as a penetration fault are suppressed, and further having excellent stress corrosion crack resistance can be provided.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于制造高可靠性焊接接头的方法，关于在抑制诸如穿透断层等焊接缺陷的结构中的焊接区域的制造，此外，焊接区域优异的材料性能如应力腐蚀开裂性。解决方案：在通过焊接金属构件制造焊接接头的方法中，控制在金属构件的焊接时使用的焊丝的材料成分，使得硫（S）的含量为0.004〜0.010％并且基于稀释图表的铁素体的含量为10〜15％。根据本发明，关于包括管道等的焊接结构中的焊接接头生产，使用抑制诸如穿透断层等焊接缺陷的初始层的TIG焊丝生产高可靠性焊接接头的方法，以及进一步具有优异的耐应力腐蚀开裂性。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2004167575A Welding method 审中-公开
公开(公告)号：JP2004167575A
公开(公告)日：2004-06-17
申请号：JP2002337671
申请日：2002-11-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YANAGIDA NOBUYOSHI , ENOMOTO KUNIO , ANZAI HIDEYA , KAWAKAMI MITSUO
IPC分类号： B23K9/23
摘要： PROBLEM TO BE SOLVED: To provide a welding method which can decrease tensile residual stress or welding distortion caused by the welding.
SOLUTION: Among passes 110-112 which constitute an utmost superficial layer of a weld zone 5 consisting of one or more layers, the last pass 112 is formed covering the position of the center line 13 of the weld zone 5 along the welding line, and then the weld zone 5 and the peripheral area of the weld zone 5 is cooled successively after the formation of the last pass 112. Thus, temperature distribution in the weld zone and its peripheral area becomes a symmetrical state on right and left with the center line of the weld zone or its proximity as the peak temperature. Therefore, when the weld zone and its peripheral zone is cooled successively after the formation of the last pass, the difference between pre-cooling temperature and post-cooling temperature in the heat affected zones in the welded material located on both sides of the weld zone is equalized and a necessary temperature difference can be given to both the heat affected zones. Accordingly the tensile residual stress or the welding distortion caused by welding can be reduced.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2005281802A Surface treatment method and surface treatment device 审中-公开
标题翻译：表面处理方法和表面处理装置
公开(公告)号：JP2005281802A
公开(公告)日：2005-10-13
申请号：JP2004099562
申请日：2004-03-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NISHIOKA EIJI , WATANABE ATSUSHI , ANZAI HIDEYA
IPC分类号： C23C26/00
摘要： PROBLEM TO BE SOLVED: To provide a surface treatment method and a surface treatment device capable of forming a coating layer having the performance to be required while suppressing influence on the member to be treated caused by heat input.
SOLUTION: In the surface treatment method and device therefor, voltage is applied to the space between the electrically conductive member 11 to be treated and a bar-shaped electrode 3 to generate discharge, thus a coating layer 18 of electrode components is formed on the surface of the member 11 to be treated. The coating layer 18 is formed while vibrating the electrode 3 between a state where the tip part of the electrode 3 is contacted with the member 11 to be treated and a state where the electrode 3 and the member to be treated are separated by a distance at which discharge is generated therebetween or further. Thus, the coating layer satisfying the performance to be required can be formed, and further, heat input volume at the time of forming the coating layer can be securely reduced to ≤1 kJ/cm. Thus, the coating layer having the performance to be required can be formed while suppressing influence on the member to be treated caused by heat input.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种表面处理方法和能够形成具有所需性能的涂层的表面处理装置，同时抑制由热输入引起的被处理部件的影响。解决方案：在表面处理方法及其装置中，对被处理导电构件11和棒状电极3之间的空间施加电压以产生放电，由此形成电极部件的涂层18 在要处理的构件11的表面上。在电极3的前端部与待处理部件11接触的状态和电极3与待处理部件分离状态之间，将电极3振动一边形成涂层18，其间产生放电或进一步。因此，可以形成满足所需性能的涂层，此外，可以将形成涂层时的热输入体积可靠地降低至≤1kJ/ cm。因此，可以在抑制由热输入引起的被处理部件的影响的同时，形成具有所需性能的涂层。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2004358547A Overlaying method and device 有权
公开(公告)号：JP2004358547A
公开(公告)日：2004-12-24
申请号：JP2003163090
申请日：2003-06-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NISHIOKA EIJI , WATANABE ATSUSHI , ANZAI HIDEYA
IPC分类号： B23K9/04 , B23K9/235
摘要： PROBLEM TO BE SOLVED: To solve a problem that corrosion resistance and mechanical strength are deteriorated due to the development of corrosion and cracking on a overlaid part if voids occur and remain on the surface of the overlaid part because of poor adhesion among droplets and the entrainment of gases, in a pulse discharge overlaying method in which the overlaid part is formed by depositing many droplets on the surface of a workpiece.
SOLUTION: In the pulse discharge overlaying method in which a overlaid part is formed with an electrode material fused by pulse discharge, the workpiece is heated and then is subjected to pulse discharge overlaying whereby voids on the overlaid part can be lessened.
COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JP2006291325A Welded member, welded structure using the same and highly corrosion-resistant austenitic stainless steel 有权
标题翻译：焊接构件，使用其的焊接结构和耐腐蚀的奥氏体不锈钢
公开(公告)号：JP2006291325A
公开(公告)日：2006-10-26
申请号：JP2005116421
申请日：2005-04-14
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIBASHI MAKOTO , UKO KENJI , FUJII KAZUMI , KATO TAKAHIKO , YAMAMOTO MICHIYOSHI , OBATA KYOJI , ANZAI HIDEYA , FUJIMORI HARUO , FUSE MOTOMASA
IPC分类号： C22C38/00 , C22C38/58 , G21D1/00
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a welded member which is excellent in stress corrosion cracking resistance and can reduce the effect on stress corrosion cracking as a structural material contacting a high temperature and high pressure water in a light-water reactor, even when its surface is subjected to machining, a welded structure and a nuclear power plant using the same, a highly corrosion-resistant austenitic stainless steel member with a high stress corrosion cracking resistance and highly corrosion-resistant austenitic stainless steel.
SOLUTION: The welded member contains, by mass, 0.001-0.020% C, 0.1-1.0% Si, 0.2-2.0% Mn, 16-20% Cr, 9-15% Ni, ≤3% Mo, 0.001-0.12% N and the balance being Fe and unavoidable impurities, wherein Cr and Md
30 calculated by formula 1, Md
30 =551-462(C+N)-9.2Si-8.1Mn-13.7Cr-29Ni-18.5Mo-1.42(ν-8.0) (wherein ν is a crystal grain size number), satisfy relation 2, Cr+0.022Md
30 ≥14.5.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种耐应力腐蚀开裂性优异的焊接部件，能够降低在轻水反应堆中与高温高压水接触的结构材料的应力腐蚀开裂的影响，甚至当其表面进行机械加工时，使用焊接结构和使用该结构的核电站，具有高抗腐蚀开裂性和高耐蚀奥氏体不锈钢的高耐蚀奥氏体不锈钢构件。解决方案：焊接部件含有0.001-0.020％C，0.1-1.0％Si，0.2-2.0％Mn，16-20％Cr，9-15％Ni，≤3％Mo，0.001- 0.12％N，余量为Fe和不可避免的杂质，其中通过式1计算的Cr和Md 30 = 551-462（C + N）-9.2Si -8.1Mn-13.7Cr-29Ni-18.5Mo-1.42（ν-8.0）（其中ν是晶粒尺寸数），满足关系式2，Cr + 0.022Md 30 ≥14.5。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2011064233A Valve stem supporting structure 审中-公开
标题翻译：阀门支撑结构
公开(公告)号：JP2011064233A
公开(公告)日：2011-03-31
申请号：JP2009213929
申请日：2009-09-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SEKIHARA TAKASHI , ANZAI HIDEYA , TAKAHASHI YUICHI
IPC分类号： F16K1/32
摘要： PROBLEM TO BE SOLVED: To provide a steam valve supporting structure having excellent wear resistance and high reliability, preventing leakage and easy in repair.
SOLUTION: A valve stem supporting structure includes a valve stem having a valve element for sealing fluid at the end thereof and a cylindrical bush which is fixed to the inner face of casing having a valve seat for contacting with the valve element and contacts the valve stem at the inner face. The welded shape of Stellite on a bush inner face is formed in a bar shape in the longitudinal direction. Material of satisfactory machinability is applied to portions of the Stellite inner face where Stellite is not applied.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异的耐磨性和高可靠性的蒸汽阀支撑结构，防止泄漏并且易于修理。解决方案：阀杆支撑结构包括阀杆，阀杆具有用于在其端部处密封流体的阀元件和固定到壳体内表面的圆柱形衬套，该套筒具有用于与阀元件和触点接触的阀座阀杆在内表面。司太立在焊接内表面上的焊接形状沿长度方向形成为棒状。可靠的切削性的材料适用于未施加司太立的斯特雷特内面的部分。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2003311481A Welding equipment 审中-公开
标题翻译：焊接设备
公开(公告)号：JP2003311481A
公开(公告)日：2003-11-05
申请号：JP2002112793
申请日：2002-04-16
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , 日立エンジニアリング株式会社 , 株式会社日立製作所
发明人： YANAGIDA NOBUYOSHI , ENOMOTO KUNIO , ANZAI HIDEYA , KAWAKAMI MITSUO , TSUJIMURA HIROSHI
IPC分类号： B23K9/29 , B23K31/00 , B23K37/00
摘要： PROBLEM TO BE SOLVED: To provide low-cost welding equipment in which the tensile residual stress of the surface of a weld zone is efficiently converted into compression.
SOLUTION: The welding equipment comprises: a torch 1 for Tungsten Inert Gas (TIG) welding supported on a carriage and connectable to a power source; an injection nozzle 21 supported on the carriage and supplying water to welded marks by means of the torch 1 for TIG welding; a suction nozzle 20 supported on the carriage and having a suction port at the outer periphery of the injection nozzle 21; a cooling medium supply hose 25 supplying water to the injection nozzle 21 by connecting the injection nozzle 21 to a water source; a suction pump providing suction force to the suction nozzle 20; and a container receiving the water sucked by means of the suction nozzle 20 through a cooling medium recovery hose 26 connected to the suction nozzle 20.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种低成本的焊接设备，其中焊接区域的表面的拉伸残余应力被有效地转化为压缩。焊接设备包括：支撑在托架上并连接到电源的钨惰性气体焊枪（TIG）焊枪; 喷嘴21，其支撑在滑架上，并通过用于TIG焊接的焊炬1向焊接标记供水; 支撑在滑架上并在喷嘴21的外周具有吸入口的吸嘴20; 冷却介质供给软管25，通过将喷嘴21连接到水源而向喷嘴21供水; 抽吸泵向吸嘴20提供吸力; 以及通过连接到吸嘴20的冷却介质回收软管26接收借助于吸嘴20吸入的水的容器。（C）2004，JPO

8. 发明专利

JP2003033871A Structural material repairing electrode 审中-公开
标题翻译：结构材料修复电极
公开(公告)号：JP2003033871A
公开(公告)日：2003-02-04
申请号：JP2001217516
申请日：2001-07-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WATANABE ATSUSHI , UETAKE NAOTO , ANZAI HIDEYA
IPC分类号： B23K9/04 , B23K9/00
摘要： PROBLEM TO BE SOLVED: To provide a compact build-up welding device not requiring two kinds of electrodes, a heating electrode and a build-up welding electrode.
SOLUTION: An electrode 2 is formed in a disk shape; and its peripheral part discharges electricity to a structural material to conduct build-up weld repairing based on the output from an output control board. The electrode 2 is rotated in the peripheral direction by a motor 3 operated by a driving machine controller 5, and conducts the build-up welding by uniformly discharging its peripheral part. A feeding mechanism of electrode wire is not required by preliminarily recognizing a required build-up amount and preparing an electrode having an outer diameter and a thickness corresponding to the build-up volume and thus simplification of the device is realized.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供不需要两种电极，加热电极和堆积焊接电极的紧凑型堆积焊接装置。解决方案：电极2形成为圆盘状; 其周边部分根据输出控制板的输出向结构材料放电，进行积层焊修复。电极2通过由驱动机器控制器5操作的电动机3沿周向旋转，并且通过均匀地排出其周边部分来进行积聚焊接。通过预先识别所需的积聚量并制备具有与积累体积相对应的外径和厚度的电极，不需要电极线的馈电机构，因此实现了器件的简化。

9. 发明专利

JPH1026598A METHOD AND APPARATUS FOR EVALUATING SENSITIZATION OF CR-CONTAINING AUSTENITE ALLOY 失效
公开(公告)号：JPH1026598A
公开(公告)日：1998-01-27
申请号：JP18056096
申请日：1996-07-10
申请人： HITACHI LTD
发明人： ANZAI HIDEYA , SHIMANUKI SHIZUKA , NAKADA KIYOTOMO , YAMAUCHI HIROSHI , KUNIYA JIRO
IPC分类号： G01N17/02 , G01N27/26 , G01N27/416 , G01N27/48
摘要： PROBLEM TO BE SOLVED: To provide a method for evaluating degree of sensitization of Cr-containing austenite alloy (hereinafter referred to as an alloy having higher stress corrosion cracking and correlation than those of prior art. SOLUTION: The method for evaluating sensitization of Cr-containing austenite alloy comprises (1) measuring step of repeating an operation for measuring maximum current density flowing to the alloy during a holding time by immersing the alloy in water solution, electrochemically passivating it, then instantaneously changing a potential of the alloy from a passivation potential to a corrosion potential, holding it for a certain time and returning it to the passivation potential by variously varying length of the holding time, (2) a calculating step of obtaining rise starting time for starting to rise the maximum current density from plotting of the density for various holding times, and (3) a judging step of estimating grain boundary Cr concentration from the rise starting point holding time obtained by the calculating step by referring to data indicating the relationship between the previously obtained Cr concentration by using various different alloys having known grain boundary Cr concentration and the rise starting holding time and judging the progress of the degree of sensitization of the alloy when the concentration is reduced.

10. 发明专利

JPH05333189A 失效
公开(公告)号：JPH05333189A
公开(公告)日：1993-12-17
申请号：JP14596592
申请日：1992-06-05
申请人： HITACHI LTD
发明人： SHIMANUKI SHIZUKA , NAKADA KIYOTOMO , ANZAI HIDEYA , MATSUSHITA SHIZUO , KASAHARA SHIGEKI , YAMAMOTO MICHIYOSHI
IPC分类号： G01N33/20 , G21C17/003
摘要： PURPOSE:To measure the remaining life of a material subject to unstable fracture by determining the critical exposure period causing the unstable fracture of the material and the actual exposure period corresponding to the physical quantity of an actual sample, and obtaining the difference between the critical exposure period and the actual exposure period. CONSTITUTION:The measuring device 14 of the estimating device of the remaining life of the austenitic stainless steel constituting a reactor measures the compliance lambdaas the physical quantity of a sample 11, for example. A memory device 112 stores the function (g) expressing the relation between the compliance lambda of the sample 11 and the elapsed time (t) and the elapsed time tc until the life of the sample 11 expires. An arithmetic device 19 calculates the remaining life with the measured result of the measuring device 14 and the memory content of the memory device 112. A display device 10 displays the remaining life. A function compensating device 111 compensates the function (g) of the memory content of the memory device 112, and a timer 113 outputs the elapsed time to used for compensation. The elapsed time (t) corresponds to the exposure period, and the elapsed time tc until the life expires corresponds to the critical exposure period causing the unstable fracture.

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