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1. 发明专利

JP2005095948A Method for improving residual stress of piping 有权
标题翻译：改善管道残余应力的方法
公开(公告)号：JP2005095948A
公开(公告)日：2005-04-14
申请号：JP2003334503
申请日：2003-09-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AOIKE SATOSHI , ENOMOTO KUNIO , SUGANO SATOSHI , ISHIWATARI MASAYUKI , HISATSUNE SHINICHI , ORITANI NAOHIKO
IPC分类号： B23K31/00
摘要： PROBLEM TO BE SOLVED: To prevent stress corrosion cracking at a portion near weld zone of stainless steel piping by means of a compact device.
SOLUTION: Piping 1 is supplied with water and watertight plugs 3 and 3 are formed at two separate places in the piping. The water 2 inside the piping between the watertight plugs is cooled by supplying dry ice 8 into an outer container 4 and then an inner container 5. Since the piping is cooled, the water is solidified so that ice is formed. Attendant on the formation of the ice, the volume of the piping inside expands so that the piping is subjected to plastic deformation. This improves the residual stress of the piping.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过紧凑的装置防止不锈钢管道焊接区附近部分的应力腐蚀开裂。
解决方案：配管1供应水和水密塞3和3形成在管道中的两个不同的地方。通过将干冰8供给到外部容器4中，然后将内部容器5供给到水密封塞之间的管道内的水2来冷却。由于管道被冷却，水被固化，从而形成冰。在冰的形成上，管道内部的体积膨胀使得管道受到塑性变形。这改善了管道的残余应力。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2006007301A Welding apparatus with cooling mechanism 审中-公开
标题翻译：具有冷却机构的焊接设备
公开(公告)号：JP2006007301A
公开(公告)日：2006-01-12
申请号：JP2004190640
申请日：2004-06-29
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： KAWAKAMI MITSUO , YANAGIDA NOBUYOSHI , HAYASHI SHOJI , SUGANO SATOSHI , ENOMOTO KUNIO , KOIDE HIROO , TSUJIMURA HIROSHI
IPC分类号： B23K37/00 , B23K9/32
摘要： PROBLEM TO BE SOLVED: To provide a welding apparatus having a mechanism to cool a welded zone with cooling water immediately after welding, which can efficiently recover cooling water without dispersing it around and can fit to a complicated surface profile of a material to be welded.
SOLUTION: This welding apparatus comprises a welding torch 1, a spray nozzle 8 to supply water to the welded zone welded by the welding torch 1, and the cooling mechanism 7 with a suction hood 9 containing the spray nozzle 8 inside. In the outer periphery of the suction hood 9, a plurality of gap adjusting devices 20 are arranged which can move following irregularity of the surface of the material to be welded 3.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种焊接设备，其具有在焊接之后立即用冷却水冷却焊接区域的机构，其可以有效地回收冷却水而不将其分散在周围，并且可以适应材料的复杂表面轮廓焊接。该焊接装置包括焊炬1，喷射喷嘴8，用于向由焊炬1焊接的焊接区域供水，冷却机构7具有内部具有喷嘴8的吸气罩9。在吸气罩9的外周设置有多个间隙调整装置20，其能够随着待焊接材料3的表面的不规则移动。（C）2006年，JPO＆NCIPI

3. 发明专利

JP2005126771A Heat treatment method for piping system 有权
标题翻译：管道系统热处理方法
公开(公告)号：JP2005126771A
公开(公告)日：2005-05-19
申请号：JP2003363991
申请日：2003-10-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YANAGIDA NOBUYOSHI , SAITO NOBORU , HAYASHI SHOJI , ENOMOTO KUNIO
IPC分类号： G21D1/00 , C21D9/08 , C21D9/50
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To make maximum relaxing amount to tension residual stress in the inner surface of a piping in the existing piping system constituted of an austenitic stainless steel having ≤0.03% carbon content.
SOLUTION: After assembling the piping system, a cooling material is put in the inner part of the piping constituted of the piping system and the outer surface of the piping is heated by using a high frequency induction heating apparatus, and the heat treatment generating the temperature difference between the inner surface and the outer surface is applied to give the plastic deformation at the tension side in the inner surface of the piping during heating. The relaxation of the tension residual stress is applied by giving the optimum temperature distribution for giving a compression residual stress in the inner surface of the piping, from a stress-strain relation having a temperature dependency of the austenitic stainless steel having low carbon content as the basic material of the piping.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：在由具有≤0.03％碳含量的奥氏体不锈钢构成的现有管道系统中，使管道内表面的最大松弛量达到拉伸残余应力。
解决方案：在组装管道系统之后，将一种冷却材料放入由管道系统构成的管道的内部，并且通过使用高频感应加热装置来加热管道的外表面，并且热处理施加内表面和外表面之间的温差产生加热时管道内表面的张力侧的塑性变形。通过从具有低碳含量的奥氏体不锈钢的温度依赖性的应力 - 应变关系给出最佳的温度分布来给出管道内表面中的压缩残余应力的最佳温度分布，作为管道的基本材料。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2004211187A Method and apparatus for heat treatment of piping system 有权
公开(公告)号：JP2004211187A
公开(公告)日：2004-07-29
申请号：JP2003001696
申请日：2003-01-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YANAGIDA NOBUYOSHI , SAITO NOBORU , SAITO HIDEYO , HAYASHI SHOJI , ENOMOTO KUNIO
IPC分类号： C21D1/42 , C21D9/08 , C21D9/50
CPC分类号： Y02P10/253
摘要： PROBLEM TO BE SOLVED: To provide a heat treatment method of a piping system whereby the residual stress in a welded metal zone and a heat affected zone on the inside surface is converted into compressive stress; and a heat treatment apparatus used therefor. SOLUTION: After a piping system is constructed, a heating coil is wound at least twice around the outer surface of a pipeline 1a, and a cooling fluid is caused to flow through the pipeline with a cooling water circulation device 19. A high-frequency heating device equipped with the heating coil, an electric source 17, and a transformer 16 causes the temperature difference between the inner surface and outer surface of the pipeline. Based on the temperature of a heated zone detected by a thermocouple 22, a control unit 18 controls the temperature distributions in the peripheral and axial directions of the pipeline. COPYRIGHT: (C)2004,JPO&NCIPI

5. 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

6. 发明专利

JP2006152410A Method and device for heat treatment of tube 有权
标题翻译：管加热处理方法及装置
公开(公告)号：JP2006152410A
公开(公告)日：2006-06-15
申请号：JP2004347967
申请日：2004-12-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAITO NOBORU , YANAGIDA NOBUYOSHI , HAYASHI SHOJI , SUGANO SATOSHI , ENOMOTO KUNIO
IPC分类号： C21D9/08 , B23K31/00 , B23K101/06 , C21D1/42 , C21D9/50
CPC分类号： C21D9/50 , C21D1/42 , C21D9/08 , Y02P10/253
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for heat treatment of a tube in which the residual stresses in a weld metal part and a weld heat-affected zone of an inner surface of an existing tube are converted into the compressive stresses, and the compressive stresses are generated in the inner surface of the existing pipe.
SOLUTION: In the method for heat treatment of the pipes to constitute a piping system, coolant is allowed to stay inside the pipe, and the outer surface of the pipe is heated at an arbitrary position. After generating the temperature distribution with less temperature difference in a tubular wall surface of the pipe at the heated portion, coolant is allowed to flow. By converting the residual stresses in the weld metal part and the weld heat-affected zone of the inner surface of the pipe into the compressive stresses, stress corrosion cracks generated from the weld metal part and the weld heat-affected zone can be suppressed.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种管的热处理方法和装置，其中现有管的内表面的焊接金属部分和焊接热影响区中的残余应力被转换成在现有管的内表面产生压应力和压应力。解决方案：在用于管道的热处理以构成管道系统的方法中，允许冷却剂保持在管内，并且管的外表面被加热到任意位置。在加热部分的管道的管状壁表面中产生温度差较小的温度分布之后，允许冷却剂流动。通过将焊接金属部件的残余应力和管内表面的焊接热影响区域转化为压缩应力，可以抑制从焊接金属部件和焊接热影响区域产生的应力腐蚀裂纹。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2006136911A Tube welding method and tube welding device 有权
标题翻译：管式焊接方法和管道焊接装置
公开(公告)号：JP2006136911A
公开(公告)日：2006-06-01
申请号：JP2004327317
申请日：2004-11-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YANAGIDA NOBUYOSHI , SAITO NOBORU , HAYASHI SHOJI , SUGANO SATOSHI , ENOMOTO KUNIO , HANEDA MITSUAKI , KOIDE HIROO
IPC分类号： B23K9/028 , B23K9/00 , B23K9/23 , B23K31/00 , B23K101/06
摘要： PROBLEM TO BE SOLVED: To provide a tube welding method and a tube welding device capable of enhancing the corrosion resistance by exerting the compressive residual stress in the axial direction in a weld metal portion on an inner face of a tube in the connection by welding tubes of large tube thickness to each other.
SOLUTION: After root passes of tubes are welded, the surface of the tubes is quenched by spraying cooling water in the stage of high temperature immediately after the molten metal is solidified behind a torch to perform the welding on the outer surface of the tubes while cooling the inner surface by allowing cooling water to flow on the inner surface of the tubes. The compressive stress is generated on the outer surface side of the tubes to suppress generation of shrink-deformation in the circumferential direction of the tubes, and generate the compressive residual stress as the residual stress in the axial direction of the inner surface of the tube.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种管焊接方法和管焊装置，其能够通过在连接中的管的内表面上的焊接金属部分中施加轴向的压缩残余应力来提高耐腐蚀性通过焊接较大管厚度的管彼此。
解决方案：焊管根管通过之后，在熔融金属固化在焊炬后立即在高温阶段喷洒冷却水来淬火管表面，以在焊接的外表面上进行焊接同时通过允许冷却水在管的内表面上流动而冷却内表面。在管的外表面侧产生压缩应力，以抑制管的圆周方向的收缩变形的产生，并且产生作为管的内表面的轴向的残留应力的压缩残余应力。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2004331999A Method and apparatus for heat-treating pipe 审中-公开
公开(公告)号：JP2004331999A
公开(公告)日：2004-11-25
申请号：JP2003125173
申请日：2003-04-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAITO NOBORU , YANAGIDA NOBUYOSHI , SAITO HIDEYO , HAYASHI SHOJI , ENOMOTO KUNIO
IPC分类号： C21D1/18 , C21D9/08
摘要： PROBLEM TO BE SOLVED: To provide a technology for heat-treating a pipe, which inhibits the occurrence of a stress corrosion cracking on both the inner and outer surface sides of the pipe.
SOLUTION: The method for heat-treating a pipe comprises an outer-surface-cooling means for cooling the outer surface of a part to be treated of a pipe 1 which is an object to be treated and a heating means for heating the part to be treated of the pipe 1. The outer-surface-cooling means has a cooling medium duct 5 arranged around the pipe 1 to cause a cooling medium to flow through it and a cooling-medium-supplying section 11 for supplying the cooling medium into the cooling medium duct 5. The heating means has a heating coil 3 which generates an induced current in the pipe 1 and is arranged around the pipe 1 with some distance from the outer surface of the pipe 1 and to which power supply units 7 and 9 are electrically connected. In the heat-treating method, the inside of the pipe 1 is filled with the cooling medium, and the part to be treated of the pipe 1 is heated while the inner and outer sides of the part to be treated being cooled; thus, the temperature difference in the thickness direction is made so that stress about the same as or higher than the tension-side yield stress is caused on the inner and outer sides of the part to be treated of the pipe 1.
COPYRIGHT: (C)2005,JPO&NCIPI

9. 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

10. 发明专利

JP2005320626A Heat treatment method and apparatus therefor 有权
标题翻译：热处理方法及其设备
公开(公告)号：JP2005320626A
公开(公告)日：2005-11-17
申请号：JP2005109329
申请日：2005-04-06
申请人： Hitachi Engineering & Services Co Ltd , Hitachi Ltd , 株式会社日立エンジニアリングサービス , 株式会社日立製作所
发明人： OKIDO SHINOBU , HISATSUNE SHINICHI , SAITO OSAMU , SUGANO AKITO , FUKAZAWA SHINICHIRO , FUJII KAZUMI , ISHIBASHI MAKOTO , KAIDA TAKESHI , MAEDA TOSHIO , ENOMOTO KUNIO , SAKATA HIROSHI , TAKAHASHI KATSUTO
IPC分类号： B23K31/00 , B23K101/06 , C21D9/08 , C21D9/50
摘要： PROBLEM TO BE SOLVED: To provide a heat treatment method and apparatus therefor in which the residual stresses in a vicinity of a weld part or in a vicinity of a bent part generated by welding or bending a pipe can be changed into the compressive residual stresses in a very effective manner.
SOLUTION: In the heat treatment method for performing heating and cooling treatment, inner and outer faces of a pipe are heated for a predetermined time so that the temperature of the inner and outer faces of the pipe reaches the same value in the creep temperature range, and then, the inner face of the pipe is cooled with refrigerant. The heat treatment apparatus comprises a heating source for heating an outer circumferential surface of the pipe, a heating source control device for performing the heat-control of the temperature of the pipe by the heating source for a predetermined time in the creep temperature range, a refrigerant feed device for feeding refrigerant into the pipe, and a heat treatment control device for feeding refrigerant into the pipe after performing the heating for the predetermined time.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种热处理方法及其设备，其中通过焊接或弯曲管道产生的弯曲部分附近的焊接部分附近或附近的残余应力可以变为压缩残余应力非常有效。解决方案：在用于进行加热和冷却处理的热处理方法中，管的内表面和外表面被加热预定时间，使得管的内表面和外表面的温度在蠕变中达到相同的值温度范围，然后用制冷剂冷却管道的内表面。热处理装置包括用于加热管的外周面的加热源，加热源控制装置，用于在蠕变温度范围内通过加热源对管的温度进行预定时间的热控制，用于将制冷剂供给到管内的制冷剂供给装置以及在预定时间内进行加热后将制冷剂供给到管内的热处理控制装置。版权所有（C）2006，JPO＆NCIPI

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