公开(公告)号：AR087266A1

公开(公告)日：2014-03-12

申请号：ARP120102646

申请日：2012-07-20

Applicant: JFE STEEL CORP

Inventor： YOSHIKAWA MASAKI ,  TAKANO JUN ,  KAWAI TAKAMASA ,  CHIKATSUNE HIROSHI ,  NAGAHAMA TAKUYA ,  UETA MASAKI ,  SONOBE OSAMU ,  TAKAHASHI KAZUNARI

IPC: F16L15/00

Abstract: Las uniones roscadas de tipo junta radial para tubos de acero aún pueden ser mejoradas en cuanto a asegurar la hermeticidad en términos de la rigidez del extremo macho. En forma específica, la superficie circunferencial externa de la nariz 8 del extremo macho 3 tiene una forma curva convexa hacia afuera, y la superficie de sello del extremo hembra 1 tiene una forma ahusada; y la superficie transversal del extremo macho 3 en el punto de sello sp que es una porción en la superficie circunferencial externa de la nariz 8 del extremo macho 3, estando la porción primero en contracto con la superficie de sello del extremo hembra 1 cuando se enrosca, es 35% o más de la superficie transversal de una porción de tubo original correspondiente a una porción sin procesar.

公开(公告)号：MX2013009898A

公开(公告)日：2013-11-04

申请号：MX2013009898

申请日：2012-02-24

Applicant: JFE STEEL CORP

Inventor： SONOBE OSAMU ,  NAGAHAMA TAKUYA ,  YOSHIKAWA MASAKI ,  TAKANOJUN ,  KAWAI TAKAMASA ,  TAKAHASHI KAZUNARI ,  CHIKATSUNE HIROSHI ,  UETA MASAKI

IPC: F16L15/04

Abstract: Juntas roscadas de tipo de sello radial para tuberías de acero tienen todavía un margen de mejora para asegurar la capacidad de sellado en términos de la rigidez de la nariz de extremo macho. Específicamente, la superficie circunferencial externa de la nariz 8 del extremo macho 3 tiene una forma curvada convexa hacia el exterior, y la superficie de sellado de la unión hembra 1 tiene una forma ahusada; y el área de sección transversal del extremo macho 3 en un punto de sello sp que es una porción en la superficie circunferencial externa de la nariz 8 del extremo macho 3, la porción que primero entra en contacto con la superficie de sellado de la unión hembra 1 cuando se une de forma roscada, es 35 % o más del área de sección transversal de una porción de tubería original correspondiente a una porción no procesada.

公开(公告)号：CA2511633A1

公开(公告)日：2004-10-28

申请号：CA2511633

申请日：2004-04-08

Applicant: JFE STEEL CORP

Inventor： NAGAHAMA TAKUYA ,  SAKATA KEI ,  SUGANO KOJI ,  OHNISHI TOSHIO ,  KENMOCHI KAZUHITO ,  TOYOOKA TAKAAKI ,  YORIFUJI AKIRA

IPC: B21C1/22 ,  B21C37/06

Abstract: A tube with a high dimensional accuracy manufacturable at low cost and havin g sufficient fatigue strength throughout the wide range of size requirement of the tube and a method of manufacturing the tube. With a plug (1) inserted in to a metal tube (5), the metal tube (5) is pushed and passed through the hole o f a die (2) for pushing-out. Thus, the pushed-out tube with the high dimension al accuracy in which one or more of an outer diameter deviation, inner diameter deviation, and circumferential wall thickness deviation are 3.0% or less can be provided.

公开(公告)号：JP2014105731A

公开(公告)日：2014-06-09

申请号：JP2012257476

申请日：2012-11-26

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： KAWAI TAKAMASA ,  TAKAHASHI KAZUNARI ,  CHIKATSUNE HIROSHI ,  YOSHIKAWA MASAKI ,  TAKANO JUN ,  NAGAHAMA TAKUYA ,  UEDA MASATERU

IPC: F16L15/04

Abstract: PROBLEM TO BE SOLVED: To provide a screw joint for pipe that is suitable for connection of steel pipes such as an oil well pipe, a riser pipe and a line pipe, and is excellent in sealability, compression resistance performance and galling resistance performance.SOLUTION: An outer peripheral surface part to be a seal part 21 on the side of a pin 3 is a convex surface 10 that is a rotation locus around a shaft of a convex arc 9 to be an arc existing in a pin outer peripheral surface in an axial cross section view and having a chord in the pin. A component inner peripheral surface part to be the seal part 21 on the side of a box 1 is a composite curve surface 19 that is constituted by connecting a first taper 15 positioned on a near shoulder part side and a second taper 16 positioned on a far shoulder part side through a concave surface 18 that is a rotation locus around a shaft of a concave arc 17 to be an arc existing in a box inner peripheral surface in the axial cross section view and having a chord outside the box. A curvature radius Rb of the concave arc 17 and a curvature radius Rp of the convex arc 9 satisfy the following relation: Rb≥Rp×0.7.

Abstract translation: 要解决的问题：提供一种用于连接诸如油井管，立管和管线管等钢管的管的螺纹接头，并且具有优异的密封性，抗压缩性能和耐磨损性能。 ：作为销3侧的密封部21的外周面部分是作为圆弧9的轴的旋转轨迹的凸面10，其为存在于销3的销外周面中的电弧 轴向剖视图，并且在销中具有弦。 作为箱体1侧的密封部21的部件内周面部分是复合曲面19，其通过连接位于近肩部侧的第一锥形15和位于远侧的第二锥形16而构成 通过作为在轴向剖视图中存在于盒内周面的电弧的凹弧17的轴周围的旋转轨迹的凹面18，并且在框外方具有弦。 凹弧17的曲率半径Rb和凸弧9的曲率半径Rp满足以下关系：Rb≥Rp×0.7。

公开(公告)号：JP2013087829A

公开(公告)日：2013-05-13

申请号：JP2011227665

申请日：2011-10-17

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： YOSHIKAWA MASAKI ,  NAGAHAMA TAKUYA ,  CHIKATSUNE HIROSHI ,  TAKANO JUN ,  KAWAI TAKAMASA ,  UEDA MASATERU ,  TAKAHASHI KAZUNARI ,  MORIOKA NOBUHIKO

IPC: F16L15/04

CPC classification number: F16L15/004 ,  C10M103/04 ,  C10M171/00 ,  C10M2201/053 ,  C10N2210/01 ,  C10N2210/04 ,  C10N2210/06 ,  C10N2230/06 ,  E21B17/042

Abstract: PROBLEM TO BE SOLVED: To provide a screw joint for a steel pipe, which is a radial seal-type joint and which combines excellent galling resistance and sealability.SOLUTION: In the screw joint for the pipe, plating with a Vickers hardness of 310 or higher is applied to an inner surface of a box, equivalent to a screw part and a seal part of the box. In the case where D represents a seal diameter defined by an outside diameter of a pin at a sealing point as a part on an outer peripheral surface of a pin-side nose part firstly coming into contact with an inner peripheral surface of a box-side nose part in screw connection and where δ represents an interference amount defined by a diameter reduction amount when the seal point is diameter-reduced by the box, a seal interference amount ratio in the circumferential direction of the pipe in the seal part, which is computed by δ/D, is 0.002 or more.

Abstract translation: 要解决的问题：提供一种用于作为径向密封型接头的钢管的螺纹接头，其结合了优异的耐磨损性和密封性。

解决方案：在用于管道的螺纹接头中，维氏硬度为310或更高的电镀施加到盒的内表面，相当于盒的螺纹部分和密封部分。 在D表示由作为销侧鼻部的外周面的一部分的密封点处的销的外径确定的密封直径首先与盒侧的内周面接触的情况下 螺钉连接的前端部，δ表示当密封点被箱减小时由直径减小量限定的干涉量，密封部中的管的圆周方向的密封干涉量比，计算出 δ/ D为0.002以上。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012247027A

公开(公告)日：2012-12-13

申请号：JP2011120560

申请日：2011-05-30

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： YOSHIKAWA MASAKI ,  NAGAHAMA TAKUYA ,  SONOBE OSAMU ,  TAKANO JUN ,  KAWAI TAKAMASA

IPC: F16L15/04

Abstract: PROBLEM TO BE SOLVED: To provide a screw joint for a steel pipe of radial seal type capable of solving the problem of deviation in thickness and eccentricity of a pin, for stable sealing performance, in the context that a pin is thinner in wall thickness and lower in rigidity when compared with a box, which may result in degradation in sealing performance because of thickness deviation and eccentricity.SOLUTION: A nose part outer peripheral surface on a pin 3 side is tapered. A nose part inner peripheral surface on a box 1 side is a curved surface protruding outward. The inner diameter side and the outer diameter side of the pin 3 are ground. The range of its inner grinding length is from the tip end of a pin nose 8 to at least a sealing point sp, with a deviation rate in thickness within the range being specified.

Abstract translation: 要解决的问题：为了提供一种用于径向密封型钢管的螺纹接头，其能够解决销的厚度偏差和偏心度的问题，为了稳定的密封性能，在销较薄的情况下 与箱体相比，壁厚度和刚度低，这可能由于厚度偏差和偏心而导致密封性能下降。 解决方案：销3侧的鼻部外周面呈锥形。 箱1侧的鼻部内周面是向外突出的曲面。 销3的内径侧和外径侧被研磨。 其内研磨长度的范围是从针鼻8的尖端到至少一个密封点sp，厚度偏差率在规定的范围内。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012211683A

公开(公告)日：2012-11-01

申请号：JP2011210031

申请日：2011-09-27

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： YOSHIKAWA MASAKI ,  NAGAHAMA TAKUYA ,  CHIKATSUNE HIROSHI ,  TAKANO JUN ,  KAWAI TAKAMASA ,  UEDA MASATERU ,  TAKAHASHI KAZUNARI ,  SONOBE OSAMU

IPC: F16L15/04

CPC classification number: F16L15/001 ,  E21B17/042 ,  F16L15/004 ,  F16L15/06

Abstract: PROBLEM TO BE SOLVED: To provide a screw joint for steel piping that exhibits superior sealing properties even when subjected to a bending load.SOLUTION: The screw joint for steel piping is configured such that a pin 3 and a box 1 are coupled by means of screw coupling, bringing the outer peripheral surface of the nose part 8 of the pin and the inner peripheral surface of the nose part of the box into metal to metal contact, this contact part forming a seal part 20. The load flank angle α of the screw part (screw coupling part of a male screw 7 and a female screw 5) is the negative side and the torque shoulder angle β of a shoulder part 12, 14 is the negative side, and L/d, the ratio of the length of the nose part L and the outer diameter of the pipe d, is ≥0.08.

Abstract translation: 要解决的问题：为了提供即使经受弯曲载荷也显示出优异的密封性能的钢管的螺纹接头。 解决方案：用于钢管的螺纹接头被构造成使得销3和箱1通过螺纹联接联接，使得销的鼻部8的外周表面和销的内周表面 该接触部分形成密封部分20.螺钉部分（外螺纹7的螺纹联接部分和阴螺纹5）的负载侧面角α为负侧，并且 肩部12,14的扭矩肩角β为负侧，L / d 0 ，鼻部L的长度与外径的比 管道d 0 ，≥0.08。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012030270A

公开(公告)日：2012-02-16

申请号：JP2010173873

申请日：2010-08-02

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： YORIFUJI AKIRA ,  NAGAHAMA TAKUYA ,  MATSUI RYOJI

IPC: B21C37/15 ,  B21B23/00 ,  C21D8/10

Abstract: PROBLEM TO BE SOLVED: To reduce variation in the structure and mechanical characteristics of a metal tube in the circumferential direction when manufacturing a metal tube having an uneven pipe wall thickness in the circumferential direction.SOLUTION: When a metal tube with an uneven wall thickness in the circumferential direction is manufactured from a source metal tube having an even wall thickness in the circumferential direction, the source metal tube is heated entirely in the circumferential direction to a warm temperature region or a hot temperature region, and then, also heated partially at a specific portion in the circumferential direction. A diameter reduction rolling is then carried out after the temperature distribution is applied in the circumferential direction of the source metal tube.

Abstract translation: 要解决的问题：在制造在圆周方向上具有不均匀的管壁厚度的金属管时，减小金属管在圆周方向上的结构和机械特性的变化。 解决方案：当在圆周方向上具有均匀壁厚的源金属管制造在圆周方向上具有不均匀壁厚的金属管时，源金属管在圆周方向上被完全加热到暖温度 区域或热温度区域，然后在圆周方向上的特定部分也被部分加热。 然后在源极金属管的圆周方向上施加温度分布后进行直径缩径轧制。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2010209402A

公开(公告)日：2010-09-24

申请号：JP2009056363

申请日：2009-03-10

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： NAGAHAMA TAKUYA ,  KIMURA MITSUO ,  MIZUNO YUSUKE ,  SHIMAMOTO TAKESHI

IPC: C22C38/00 ,  C22C38/58

Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive high-strength martensitic stainless steel pipe for use in oil wells which has excellent hot workability and a high strength exceeding 654 MPa of YS, further exhibits excellent CO
2 corrosion resistance under severe high-temperature corrosive environment of ≥170°C containing CO
2 , Cl
- , etc., and excellent SSC resistance even under H
2 S-containing environments, and stably has high toughness.
SOLUTION: The stainless steel pipe contains, by mass, ≤0.04% C, ≤0.50% Si, 0.20 to 1.80% Mn, ≤0.03% P, ≤0.005% S, 15.5 to 17.5% Cr, 2.5 to 5.5% Ni, ≤0.20% V, 1.5 to 3.5% Mo, 0.50 to 3.0% W, ≤0.05% Al, ≤0.15% N and ≤0.006% O so as to satisfy three correlational formulae, and has microstructure, wherein regarding the largest one of the crystal grains composing the microstructure, the distance between two points in the crystal grains is ≤200 μm.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种廉价的用于油井的高强度马氏体不锈钢管，其具有优异的热加工性和超过654MPa的高强度YS，进一步表现出优异的CO 2 在含有CO 2 ，Cl - 等的≥170°C的严酷高温腐蚀环境下的耐腐蚀性，即使在H 2 含S环境，稳定性好。

解决方案：不锈钢管质量≤0.04％C，≤0.50％Si，0.20〜1.80％Mn，≤0.03％P，≤0.005％S，15.5〜17.5％Cr，2.5〜5.5％ Ni，≤0.20％V，1.5〜3.5％Mo，0.50〜3.0％W，≤0.05％Al，≤0.15％N和≤0.006％O，满足三个关联式，具有微结构，其中， 构成微结构的晶粒的晶粒间的距离≤200μm。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2013029176A

公开(公告)日：2013-02-07

申请号：JP2011166281

申请日：2011-07-29

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： NAGAHAMA TAKUYA ,  SONOBE OSAMU ,  YOSHIKAWA MASAKI ,  TAKANO JUN ,  KAWAI TAKAMASA

IPC: F16L15/04

Abstract: PROBLEM TO BE SOLVED: To provide a steel pipe screw joint which has a simple pin nose shape and high air tightness even in an outside pressure environment since a prior technique gives discontinuity between a shoulder part and a seal part, complicates a shape, and sacrifices processing efficiency.SOLUTION: The steel pipe screw joint includes: a pin 3 having a nose part 8 extending from a male screw part to a tube end side, and a shoulder part 14 provided at the tip end of the nose part 8; a female screw part; a seal surface 21 of the pin 3; and a box 1, in which the pin 3 and the box 1 are connected by screw connection, and a contact part between a nose part outer circumferential surface 31 of the pin 3 and the seal surface 21 of the box 1 forms a seal part. In the screw joint, the nose part outer circumferential surface 31 of the pin 3 has an outwardly convex curved shape, the seal surface 21 of the box 1 has a simple tapered shape, and a sealing point xis 0.2 inch or more.

Abstract translation: 要解决的问题：即使在现有技术中，由于现有的技术在肩部和密封部之间产生不连续性，所以提供即使在外部压力环境中也具有简单的鼻尖形状和高气密性的钢管螺纹接头，使形状复杂化 ，牺牲处理效率。 解决方案：钢管螺纹接头包括：销3，其具有从外螺纹部分延伸到管端侧的鼻部8，以及设置在鼻部8的前端的肩部14; 内螺纹部分; 销3的密封表面21; 以及通过螺纹连接将销3和盒1连接的盒1，销3的鼻部外周面31与盒1的密封面21之间的接触部形成密封部。 在螺钉接头中，销3的鼻部外周面31具有向外凸的弯曲形状，盒1的密封面21具有简单的锥形形状，并且密封点x p 为0.2英寸以上。 版权所有（C）2013，JPO＆INPIT