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1. 发明专利

JP2009154209A Friction stir welding method 审中-公开
标题翻译：摩擦焊接方法
公开(公告)号：JP2009154209A
公开(公告)日：2009-07-16
申请号：JP2009097570
申请日：2009-04-14
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AOTA KINYA , INAGAKI MASATOSHI , HIRANO SATOSHI , OKAMOTO KAZUTAKA
IPC分类号： B23K20/12
CPC分类号： B23K20/1255 , B23K20/1265
摘要： PROBLEM TO BE SOLVED: To provide a friction stir welding method capable of increasing the welding strength of a lap joint.
SOLUTION: A welding tool (1) includes a small diameter projected part (2) at the tip of a shoulder (3). The welding tool is press-fitted only to the upper plate (4) of the lap joint while being rotated. By a friction stirring action, an upper plate side welding boundary surface (6) plastically flows, a surface oxidation film on a lapped surface is peeled off, and the boundary surface is activated to provide an excellent welding part. Also, since the welding tool is formed in a shape having the small diameter semispherical projected part (2) at the tip thereof, the thickness (12) of an upper plate welding part is increased, and a lap joint part with high welding strength can be provided.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够提高搭接接头的焊接强度的摩擦搅拌焊接方法。解决方案：焊接工具（1）在肩部（3）的尖端处包括小直径突出部分（2）。焊接工具在旋转时仅被压配合到搭接部的上板（4）上。通过摩擦搅拌作用，上板侧焊接边界面（6）塑性流动，剥离表面的表面氧化膜被剥离，并且边界面被激活以提供优异的焊接部分。另外，由于焊接工具形成为在其前端具有小直径半球形突出部分（2）的形状，因此上板焊接部分的厚度（12）增加，并且具有高焊接强度的搭接部分提供。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2005028378A Friction stir welding method for lap joint 审中-公开
标题翻译：滑动接头的摩擦焊接方法
公开(公告)号：JP2005028378A
公开(公告)日：2005-02-03
申请号：JP2003193994
申请日：2003-07-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AOTA KINYA , INAGAKI MASATOSHI
IPC分类号： B23K20/12
摘要： PROBLEM TO BE SOLVED: To solve a conventional problem in which satisfactory welding is difficult due to difference in deformation resistance of metals, in the case where metals of different melting points are welded to each other in the friction stir welding of lap joints.
SOLUTION: In this method, welding is performed such that a plurality of members are superposed, with members on the front side pressed by a revolving welding tool 6 from above the superposed part, that the vicinity of the surface of the pressed member is stirred through frictional heat, with the temperature of the superposed face raised by the frictional heat, and that the welding is carried out by the diffused reaction of the oppositely facing members with the superposed face held in-between. According to this method, the upper face of the upper plate 1 is pressed by the welding tool 6, with a friction stir layer 5 formed. This pressing makes the joining boundary faces 3 stuck together, thereby causing diffused reaction between the metals of the upper and lower plates 1, 2 through the frictional heat and enabling a reaction layer 4 to be formed. Thus, the upper and lower plates 1, 2 can be metallically welded to each other.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了解决由于金属的变形阻力差而难以满足焊接的常规问题，在搭接接头的摩擦搅拌焊接中，在不同熔点的金属彼此焊接的情况下。解决方案：在该方法中，进行焊接，使得多个部件重叠，前侧的部件由旋转焊接工具6从重叠部分的上方按压，使得压紧部件的表面附近通过摩擦热进行搅拌，叠加面的温度由于摩擦热而升高，并且通过相对的构件与叠置的面保持在其间的扩散反应进行焊接。根据该方法，由焊接工具6压制上板1的上表面，形成摩擦搅拌层5。这种挤压使接合界面3粘合在一起，从而通过摩擦热使上板1,2的金属发生扩散反应，从而形成反应层4。因此，上板和下板1,2可以彼此金属地焊接。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2005021939A Seal welding method for small diameter hole and its automatic welding device 有权
标题翻译：小直径密封焊接方法及其自动焊接装置
公开(公告)号：JP2005021939A
公开(公告)日：2005-01-27
申请号：JP2003189940
申请日：2003-07-02
申请人： Hitachi Ltd , Hitachi Maxell Ltd , 日立マクセル株式会社 , 株式会社日立製作所
发明人： IMANAGA AKIYOSHI , HANEDA MITSUAKI , INAGAKI MASATOSHI , WATANABE OSAMU , SOMATOMO YOSHIKI , HIRASAWA SHIGEKI
IPC分类号： B23K9/167 , B23K9/02 , B23K9/29
摘要： PROBLEM TO BE SOLVED: To provide a seal welding method for a small diameter hole, by which the small diameter hole provided on the surface of a metal plate of a small article can be easily welded in a short time and can be surely and completely sealed, and a high quality welding part with the smooth surface after welding can be obtained, and to also provide its automatic welding device. SOLUTION: The seal welding method is composed so as to seal the small diameter hole by inserting a sealing plug 3 to the small diameter hole 4 provided on the surface of a metal base material 2 which is a lid plate or a flat plate of a container 1 for the small article. A circular or polygonal thin wall thickness part 5b, in which the vicinity of the small diameter hole is in a plane shape, is formed on the rear face side of the metal base material. A circular or polygonal overhanging part 3a, whose outer diameter is larger than the inner diameter of the small diameter hole, is formed to the head part of the sealing plug. The seal welding is executed by melting the sealing plug and the thin wall thickness part of the metal base material by an arc heat source from a welding torch after inserting the sealing plug into the small diameter hole. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种小直径孔的密封焊接方法，通过该密封焊接方法可以在短时间内容易地焊接小型制品的金属板的表面上的小直径孔，并且可以肯定地并完全密封，可以获得焊接后光滑表面的优质焊接部件，并提供自动焊接装置。解决方案：密封焊接方法是通过将密封塞3插入到设置在作为盖板或平板的金属基材2的表面上的小直径孔4上来密封小直径孔的小物品的容器1。在金属基材的背面侧形成有圆形或多边形的薄壁部5b，其中小直径孔附近为平面形状。在密封塞的头部形成有外径大于小直径孔的内径的圆形或多边形突出部3a。在将密封塞插入小直径孔之后，通过来自焊炬的电弧热源将金属基材的密封塞和薄壁部分熔化，进行密封焊接。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2003236661A GAS TURBINE BLADE AND METHOD OF MANUFACTURING THE SAME 审中-公开
公开(公告)号：JP2003236661A
公开(公告)日：2003-08-26
申请号：JP2002040574
申请日：2002-02-18
申请人： HITACHI LTD
发明人： MIYAZAKI KUNIO , TSUKAMOTO TAKESHI , INAGAKI MASATOSHI
IPC分类号： F01D5/28 , B23K9/00 , B23K9/167 , B23K31/00 , C22C19/05 , F02C7/00
摘要： PROBLEM TO BE SOLVED: To decrease the occurrence of defects in a welded metal part after sealing a casting hole due to a solidification crack, a reheat crack, or a cavity at the central part of welded metal. SOLUTION: When a TIG welding is performed by inserting and arranging a filler material 1 having a shape the same as that of the casting hole into the casting hole 2 of a gas turbine blade 3, the total content of Al and Ti in the filler material is suppressed under a prescribed quantity, the thermal concentration of an arc is enhanced so that the molten quantity of a Ni-group mother material melted with the arc in the molten metal is kept at a prescribed value or smaller, and the heat input is controlled, and the down-slope of the cutoff period of the welding current is controlled, thus such defects as the crack and the cavity of welded metal parts are decreased. COPYRIGHT: (C)2003,JPO

5. 发明专利

JPH11324983A MOTOR FAN AND IMPELLER USED IN THE SAME 失效
公开(公告)号：JPH11324983A
公开(公告)日：1999-11-26
申请号：JP13796198
申请日：1998-05-20
申请人： HITACHI LTD
发明人： OBANA TAKESHI , NAKAMURA KIYOMI , INAGAKI MASATOSHI , AONO YASUHISA
IPC分类号： F04D27/00 , F04D29/00 , F04D29/30
摘要： PROBLEM TO BE SOLVED: To reduce the air resistance of an impeller and improve the total rigidity of the impeller and the rotating speed of a motor fan by integrally molding one of the front and rear plates of the impeller and the blades with the granulated crystalline magnesium alloy casting. SOLUTION: A front plate 101 and a blade 103 are integrally formed by the granulated crystalline magnesium alloy casting. Accordingly the fastening projections for fixing the blades 103 do not exist on an upper face of the front plate 101, and the air resistance on the upper face of the front plate 101 can be reduced. Further a specific gravity of the magnesium alloy is about 1.8, so that the weight can be reduced to about 2/3 in comparison with a specific greavity of an aluminum alloy 2.7. Thereby the load applied to a rotary shaft can be reduced, the rigidity of an impeller can be improved, and further the rotating speed of the fan motor can be improved.

6. 发明专利

JPH11264885A HIGHLY CORROSION RESISTIVE HF ALLOY, NEUTRON ABSORBER FOR REACTOR CONTROL ROD AND REACTOR CONTROL ROD USING THE ALLOY 失效
公开(公告)号：JPH11264885A
公开(公告)日：1999-09-28
申请号：JP6976498
申请日：1998-03-19
申请人： HITACHI LTD
发明人： TAKASE IWAO , INAGAKI MASATOSHI , FUJIEDA TADASHI , KOIZUMI AKIRA
IPC分类号： G21C7/24 , C22C27/00 , C22F1/00 , C22F1/18 , G21C5/00 , G21C7/113
摘要： PROBLEM TO BE SOLVED: To obtain a neutron absorber for reactor control rod and reactor control rod having high plastic workability and high corrosion resistivity by using a specified component Hf alloy. SOLUTION: By adding tin, iron, chrome, niobium, etc., in proper amount not to damaging the mechanical characteristics of Hf, an dense oxidation layer is formed to improve corrosion resistivity. For example, ingot with Sn of ca. 0.09% in weight, Fe of ca. 0.10%, Cr of ca. 0.09%, Zr of ca. 0.85% and Hf for the remaining part is melted by arc melting. After double melting, refining heat treatment is applied under vacuum at ca. 1100 deg.C for ca. 1 hour to homogenize the additional elements. Hot roll is applied twice in ca. 1000 deg.C and it is annealed in ca. 850 deg.C for ca. 1 hour. By repeating cold roll and annealing, plate thickness is made ca. 1.7 mm. A long plate material is press fabricated, it is made rectangular cylindrical reactivity controller material 27 by TIG welding and assembled in a control rod sheeth 23 of SUS316L. By this, corrosion resistivity is significantly improved and using period in a reactor can be prolonged.

7. 发明专利

JPH1150178A STATIONARY BLADE FOR GAS TURBINE, AND INDUSTRIAL GAS TURBINE PLANT 失效
公开(公告)号：JPH1150178A
公开(公告)日：1999-02-23
申请号：JP22003797
申请日：1997-07-30
申请人： HITACHI LTD , CHUGOKU ELECTRIC POWER
发明人： ARAI MASAHIKO , KONDO YASUO , INAGAKI MASATOSHI , YAMAGUCHI HIROSHI , ARIKAWA YOSHIAKI , NISHIDA HIDETAKA
IPC分类号： F01D5/28 , C22C19/05
摘要： PROBLEM TO BE SOLVED: To provide a gas turbine stationary blade composed of an Ni-base oxide dispersion strengthened alloy, having hot workability and high temp. structure stability and improved in high temp. creep characteristic and thermal fatigue resistance. SOLUTION: A nickel-base alloy, having a composition containing, by weight,

8. 发明专利

JPH1036929A ZIRCONIUM-BASE ALLOY PLATE REDUCED IN IRRADIATION GROWTH, ITS PRODUCTION, AND ITS USE 失效
公开(公告)号：JPH1036929A
公开(公告)日：1998-02-10
申请号：JP10128297
申请日：1997-04-18
申请人： HITACHI LTD
发明人： INAGAKI MASATOSHI , SUGANO MASAYOSHI , TAKASE IWAO , KIDA TOSHITAKA , ONAKA NORIYUKI , ISHIZAKI HIDEAKI , HIRAKAWA HIROMASA , MAKI HIDEO
IPC分类号： G21C3/06 , C22C16/00 , C22F1/00 , C22F1/18 , G21C3/07 , G21C3/30 , G21C3/324
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of elongation and warpage deformation, caused by irradiation growth, by specifying the rate of orientation of a specific crystal orientation of hexagonal Zr of allot in a direction perpendicular to the plate surface. SOLUTION: Warpage deformation is caused by the orientation of the crystal orientation of hexagonal Zr metal in a direction perpendicular to the surface of Zr alloy. On neutron irradiation, the crystal is contracted in the direction and expands in a direction perpendicular to the direction. As a result, in the case of a fuel channel box in which the crystal orientation is oriented perpendicularly to the surface, irradiation growth occurs in a longitudinal direction and a width direction, If the amount of irradiation differs in different positions, difference in the amount of irradiation growth is bright about and causes warpage deformation. In this case, by regulating the rate of orientation, Fr as of the crystal orientation on a direction perpendicular to the plate surface is regulated to 0.20-0.50, irradiation elongation is remarkably decreased and, even in a high irradiation region of 10 (n/cm ) amount of neutron irradiation, elongation is reduced essentially to zero, that is, the occurrence of warpage deformation can be prevented.

9. 发明专利

JPH1010257A FUEL ASSEMBLY AND MANUFACTURE OF CHANNEL BOX THEREFOR 失效
公开(公告)号：JPH1010257A
公开(公告)日：1998-01-16
申请号：JP16644496
申请日：1996-06-26
申请人： HITACHI LTD
发明人： FUJIEDA TADASHI , INAGAKI MASATOSHI , TAKASE IWAO , NISHINO YOSHITAKA , YAMASHITA JUNICHI , YAMANAKA AKIHIRO , ITO KENICHI , NAKAJIMA JUNJIRO , SETO TAKEHIRO
IPC分类号： G21C3/30 , G21C3/324 , G21C3/326 , G21C3/62 , G21C7/04
摘要： PROBLEM TO BE SOLVED: To lower the local peaking factor at the corner of a fuel assembly by burying a burnable poison such that it does not touch the core water directly thereby preventing gap corrosion, galvanic corrosion, etc. SOLUTION: An MOX fuel assembly A comprises a channel box 1, a bundle of a large number of fuel rods 2, a water rod 3, and a BP member 4 containing a burnable neutron absorbing poison (BP) arranged in a member surrounding the channel box 1. The BP member 4 is buried in the longitudinal direction in the vicinity of the corner of four sides surrounding the channel box 1. The channel box is produced by making a longitudinal recess in a zircaloy plate, fitting the BP member 4 therein, applying another thin zircaloy plate thereon, welding the seam in the vacuum by means of an electron beam, repeating hot and cold rolling and annealing several times and obtaining a complete single plate. The plate is then subjected to a specified bending work, butt welding, and the like to produce a rectangular channel box 1 which is eyentually subjected to specified heat treatment and autoclave treatment thus completing the channel box.

10. 发明专利

JPH07238334A SLIDING PARTS AND SLIDING MEMBER FOR NUCLEAR POWER PLANT 失效
公开(公告)号：JPH07238334A
公开(公告)日：1995-09-12
申请号：JP5101794
申请日：1994-02-25
申请人： HITACHI LTD
发明人： MIYAZAKI KUNIO , INAGAKI MASATOSHI , ONAKA NORIYUKI , SUWA MASATERU , KUNIYA JIRO , SHIRAKI TOMOMI , KOSHIISHI MASATO
IPC分类号： C22C19/03
摘要： PURPOSE:To obtain a sliding member capable of reducing exposure dose and increasing the safty of nuclear power plant by using an iron-base alloy, dispersedly containing specific amounts of vanadium carbide in a matrix, as a fixed member and also using a nickel-base alloy of specific composition as a movable member. CONSTITUTION:Sliding parts for nuclear power plant can be produced by using an iron-base alloy (stainless steel, etc.), dispersedly containing fine grains of vanadium carbide in a matrix by 1-10% by volume ratio, as a fixed member and also using a nickel-base alloy, consisting of, by weight ratio, 13-22% chromium, 3-10% molybdenum, 3-8% aluminum, 0.5-5% titanium, 1-5% zirconium,

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