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51. 发明专利

JPH0763289A OIL PIPE COUPING EXCELLENT IN BENDING STRENGTH 失效
公开(公告)号：JPH0763289A
公开(公告)日：1995-03-07
申请号：JP21176293
申请日：1993-08-26
申请人： NIPPON STEEL CORP
发明人： MARUYAMA KAZUSHI , TSURU EIJI
IPC分类号： F16L15/00
摘要： PURPOSE:To reduce bending stress around cut-up port and improve strength under application of bending load by extending the box and of a couping and causing its inner surface to come into contact with the outside circumference of the pin adjoining the cut-up port by a pin male screw. CONSTITUTION:A screw couping is composed of a box 1 having a female screw in its inner surface and a pin 2 having a male screw on its outer surface. It is composed to have a parallel sleeve machined portion B attached to box ends 3a, 3b and the sleeve inner surface come into contact with the pin outer surface adjoining the pin screw cut-up port. Normally, an oil pipe screw couping of a pin-box type has its pin screw cut-up port become a transfer opening for tensile, bending and torsion stress from the pin to the box and become the weakest point where the maximum stress concentrates. For this reason, the bending stress transferred from the pipe is eased and reduced by the box parallel sleeve B before entering the weak point. Futhermore, excessive bending deformation starting from the screw cut-up port can be prevented by covering the dangerous port with the closely adhered parallel sleeve B.

52. 发明专利

JPH05149485A THREADED JOINT EXCELLENT IN SEIZING RESISTANT PROPERTY 失效
公开(公告)号：JPH05149485A
公开(公告)日：1993-06-15
申请号：JP24207191
申请日：1991-09-20
申请人： NIPPON STEEL CORP
发明人： TSURU EIJI , KAMIYAMA FUJIMASA , OGASAWARA MASAO , UENO MASAKATSU
IPC分类号： C25D7/04 , E21B17/042 , F16L15/04
摘要： PURPOSE:To provide threaded joints for oil well pipes used in drilling for crude oil or threaded joints for line pipes for transporting crude oil by treating the surfaces of the joints so that the joints will not be siezed and can be repeatedly used even if they have to be repeatedly tightened and loosened. CONSTITUTION:A threded joint comprises a pin 2 having male screws and subsequent screwless tip parts on the pipe outer surface and a box 1 having female screws and screwless parts which correspond to the screwless tip parts on the pipe inner surface. A dispersion plating layer which causes one or many non-metal or other metal phases to be dispersed and eutectoid-transformed in the metal matrix is formed on the pin 2 or the box 1. This constitution allows the seizing resistant property of the joint to be remarkably improved.

53. 发明专利

JPH0415385A OIL WELL PIPE JOINT 失效
公开(公告)号：JPH0415385A
公开(公告)日：1992-01-20
申请号：JP11590090
申请日：1990-05-07
申请人： NIPPON STEEL CORP
发明人： OGASAWARA MASAO , KAMIYAMA FUJIMASA , TSURU EIJI , TAKEUCHI EIZO
IPC分类号： F16L15/00
摘要： PURPOSE:To prevent the seizure of a screw and secure the life of a working tool by reducing the stress concentration by carrying out working for a joint member which has a thread height of 2.0 - 3.0mm and is screwed, with the radius of curvature of the corner at a trapezoidal-shaped head part and the bottom part in 0.25 - 0.55mm. CONSTITUTION:In the estimation of the min. allowable radius of curvature rn(min), the stress concentration coefficient alphan =0.25mm in the case of a thread height (d) of 2.5mm and a thread pitch P of 6.35mm. When rn is too large, a sufficient length of a contact part (l) can not be secured, and a deflection is generated on the contact surface, and a screw is easily demounted, and a sufficient strength can not be secured. In order to obtain the max. allowable radius of curvature rn(max), l>=0.9mm passes for a hook-shaped screw having theta=-3 deg., taking account of the length (l) of the loaded surface, and rn

54. 发明专利

JPS62171583A THREADED JOINT FOR HIGH-AIRTIGHTNESS OIL WELL PIPE 失效
公开(公告)号：JPS62171583A
公开(公告)日：1987-07-28
申请号：JP1331586
申请日：1986-01-24
申请人： NIPPON STEEL CORP
发明人： KAMIYAMA FUJIMASA , TSURU EIJI
IPC分类号： F16L15/00

55. 发明专利

JPS59166788A Method of machining double pipe screw joint section 失效
标题翻译：加工双管螺丝接头部分的方法
公开(公告)号：JPS59166788A
公开(公告)日：1984-09-20
申请号：JP4057583
申请日：1983-03-14
申请人： Nippon Steel Corp
发明人： MARUYAMA KAZUSHI , TSURU EIJI
IPC分类号： F16L15/00

56. 发明专利

JP2012051033A Method of manufacturing welded steel pipe 有权
标题翻译：焊接钢管制造方法
公开(公告)号：JP2012051033A
公开(公告)日：2012-03-15
申请号：JP2011272502
申请日：2011-12-13
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TSURU EIJI
IPC分类号： B23K31/00 , B23K9/18 , B23K9/23 , B23K37/08
摘要： PROBLEM TO BE SOLVED: To provide a method for preventing a lateral crack resulting from hydrogen which is generated at a seam welded part of a high-strength welded pipe whose tensile strength for performing seam welding from inside/outside faces is not smaller than 850 MPa.SOLUTION: In the method of manufacturing the welded steel pipe which forms a steel plate whose tensile strength is not smaller than 850 MPa into a cylindrical shape, and submerge-arc welds an abutment part from the inside/outside faces, a region corresponding to 2 to 10% of a height of a welded metal in the thickness direction is cut by cutting from the external surface of the steel pipe over the whole length of the welding direction.
摘要翻译：要解决的问题：提供一种防止在由内/外面进行缝焊的拉伸强度不高的高强度焊接管的缝焊部产生的氢产生的横向裂纹的方法超过850MPa。解决方案：在将钢板的拉伸强度不低于850MPa的钢板制成圆筒形状的焊接钢管的制造方法中，从内/外侧面对邻接部进行浸没式电弧焊接，对应于焊接金属在厚度方向上的高度的2〜10％，在焊接方向的整个长度上从钢管的外表面切割。版权所有（C）2012，JPO＆INPIT

57. 发明专利

JP2011189409A Liquid phase diffusion bonding pipe joint and manufacturing method therefor 有权
标题翻译：液相扩束管接头及其制造方法
公开(公告)号：JP2011189409A
公开(公告)日：2011-09-29
申请号：JP2011115186
申请日：2011-05-23
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TSURU EIJI , HASEGAWA HIROSHI , SHINOHARA YASUHIRO , SATO YUICHI
IPC分类号： B23K20/00 , B21C37/08
CPC分类号： B23K20/023 , B23K20/002 , B23K33/006 , B23K2201/06 , F16L13/0227
摘要： PROBLEM TO BE SOLVED: To improve the joining strength of a liquid phase diffusion bonding pipe joint comprising a metal pipe or metal joint of a metal member and a joint pipe or thick-walled metal pipe tapered at the outside surface at one end or both ends joined together by liquid phase diffusion bonding. SOLUTION: A liquid phase diffusion bonded pipe joint comprising metal pipes or a metal pipe and a joint pipe joined by liquid phase diffusion bonding, and a method of production of the same, are provided, the liquid phase diffusion bonded pipe joint comprised of a metal joint provided with a tapered slanted part press-fit into an end of a metal pipe by a thrust in a pipe axial direction while expanding the metal pipe inside diameter and tightly engaging with the end and a joining surface part continuous from the tapered slanted part and joined with an end face of the metal pipe by liquid phase diffusion bonding and a metal pipe tightly engaging with the tapered slanted part in the expanded state and with an end face joined with the joining surface part by liquid phase diffusion bonding. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：解决的问题为了提高包含金属构件的金属管或金属接头和在一端的外表面上的接合管或厚壁金属管的液相扩散接合管接头的接合强度或两端通过液相扩散接合连接在一起。解决方案：提供一种液相扩散接合管接头，其包括金属管或金属管和通过液相扩散接合连接的接合管及其制造方法，液相扩散接合管接头包括金属接头，其具有锥形倾斜部，通过在管轴向方向上的推力压配合到金属管的端部，同时使金属管内径扩大并与端部紧密接合;以及接合表面部分，其从锥形通过液相扩散接合与金属管的端面接合，金属管与膨胀状态的锥形倾斜部紧密接合，并且通过液相扩散接合与接合面部连接的端面。版权所有（C）2011，JPO＆INPIT

58. 发明专利

JP2009228826A Joining method loose flange type flared pipe coupling and steel pipe 有权
标题翻译：接头法松紧法兰式管接头和钢管
公开(公告)号：JP2009228826A
公开(公告)日：2009-10-08
申请号：JP2008075958
申请日：2008-03-24
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TSURU EIJI , KONDO TETSUMI , SATO SATORU , HASEGAWA HIROSHI
IPC分类号： F16L23/024 , F16L23/026 , F16L23/028
CPC分类号： F16L23/0283
摘要： PROBLEM TO BE SOLVED: To improve a sealing performance when an excessive external force is loaded to a loose flange type flared pipe coupling, repeatedly in particular. SOLUTION: A loose flange type flared pipe coupling forces a loose flange 4 to be engaged with a flare part 2 formed by flange machining an end of a steel pipe 1, end surfaces of the flare part 2 to abut on each other by interposing a gasket 3 and an abutment part to be sandwiched between the loose flanges 4 to be mechanically fastened, wherein the flare part end surface angle θ[°] between an end surface of the flare part 2 and the center shaft of the steel pipe, and the corner curvature radius R [mm] between the flare part 2 and steel pipe 1, satisfy 87≤θ≤0.88ln(R)+89.3. The excellent sealing performance is thus provided. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：当过度的外力特别地重复地装载到松散的法兰式扩口管联接器时，提高密封性能。解决方案：松散的法兰型扩口管联接器迫使松散的凸缘4与由法兰加工钢管1的端部形成的喇叭部2接合，喇叭部2的端面通过插入垫圈3和待夹在松散凸缘4之间的邻接部件以机械固定，其中扩口部分2的端面与钢管的中心轴之间的喇叭口端面角度θ[°] 喇叭部2与钢管1之间的角曲率半径R [mm]满足87≤θ≤0.88ln（R）+89.3。因此提供了优异的密封性能。版权所有（C）2010，JPO＆INPIT

59. 发明专利

JP2009228825A Joining method loose flange type flared pipe coupling and steel pipe 有权
标题翻译：接头法松紧法兰式管接头和钢管
公开(公告)号：JP2009228825A
公开(公告)日：2009-10-08
申请号：JP2008075953
申请日：2008-03-24
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TSURU EIJI , KONDO TETSUMI , SATO SATORU , HASEGAWA HIROSHI
IPC分类号： F16L23/024 , F16L23/026 , F16L23/028
CPC分类号： F16L23/0283
摘要： PROBLEM TO BE SOLVED: To improve a sealing performance when excessive external force, in particular, is loaded to a loose flange type flared pipe coupling. SOLUTION: A loose flange type flared pipe coupling forces a loose flange 4 to be engaged with a flare part 2 formed by flange machining an end of a steel pipe 1, end surfaces of the flare part 2 to abut on each other by interposing a gasket 3 and an abutment part to be sandwiched between the loose flanges 4 to be mechanically fastened, wherein the flare part end surface angle θ[°] between an end surface of the flare part 4, and the center shaft of the steel pipe 1 is set at 87°-89°. The excellent sealing performance is thereby provided. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提高当外力过大时的密封性能，特别是将其装载到松散的法兰型扩口管接头。解决方案：松散的法兰型扩口管联接器迫使松散的凸缘4与由法兰加工钢管1的端部形成的喇叭部2接合，喇叭部2的端面通过插入垫片3和待夹在松散凸缘4之间的邻接部件以机械固定，其中，喇叭形部分4的端面与钢管的中心轴之间的喇叭口部端面角度θ[°] 1设置在87°-89°。由此提供了优异的密封性能。版权所有（C）2010，JPO＆INPIT

60. 发明专利

JP2008260030A Apparatus for manufacturing high strength welded steel pipe 有权
标题翻译：制造高强度焊接钢管的装置
公开(公告)号：JP2008260030A
公开(公告)日：2008-10-30
申请号：JP2007103204
申请日：2007-04-10
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TERASAWA TAKASHI , YOSHIDA TATSUYA , HATTORI YUTAKA , TSURU EIJI
IPC分类号： B21C37/08 , B21D5/12
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a high strength welded steel pipe, which apparatus can manufacture a steel pipe having a sound welded portion by narrowing a seam gap and by optimizing the position of the seam while preventing the rotation and twist of the steel pipe in manufacturing the high strength welded steel pipe.
SOLUTION: The apparatus for manufacturing the welded steel pipe by welding the butted portion of an O-can comprises a plurality of fin rolls having a circular disk shape fin portion to be partially inserted into the butted portion of the O-can to be carried and a hourglass shape drum for pressing the outer surface of the O-can in the neighborhood of the butted portion; a top roll for reforming the shape of the O-can and the shape of the butted portion; and a welding torch for welding the butted portion. The hourglass shape drum of the fin roll is formed such that the diameters of the portions separated in both directions from the fin portion outward increase with the separated distance.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种高强度焊接钢管的制造装置，该装置可以通过缩小接缝间隙来制造具有声音焊接部分的钢管，并且通过优化接缝的位置同时防止旋转并在制造高强度焊接钢管的钢管扭转。解决方案：通过焊接O形罐的对接部分来制造焊接钢管的装置包括多个翅片辊，其具有圆形翅片部分，以部分地插入到O形罐的对接部分中并且用于在对接部分附近按压O形罐的外表面的沙漏形鼓; 用于重新形成O形罐的形状的顶辊和对接部分的形状; 以及用于焊接对接部分的焊枪。翅片辊的沙漏形状的鼓形成为使得从翅片部向外分离的部分的直径随分离距离而增加。版权所有（C）2009，JPO＆INPIT

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