公开(公告)号：SA516371438B1

公开(公告)日：2021-07-11

申请号：SA516371438

申请日：2016-06-30

Applicant: JFE STEEL CORP

Inventor： KAWAI TAKAMASA ,  NAGAHAMA TAKUYA ,  YONEYAMA TSUYOSHI ,  TAKANO JUN ,  TAKAHASHI KAZUNARI ,  UETA MASATERU ,  YOSHIKAWA MASAKI ,  SEKI HARUHIKO ,  SATO HIDEO ,  CHIKATSUNE HIROSHI

Abstract: يزودالاختراعالحاليوصلةملولبة threaded joint للمعداتالأنبوبيةسميكةالجدارللدولالمنتجةللزيتوالتييمكنأنتزودكلمنضمانالقدرةعلىمنعالتسرب sealability ومنعالتخدش galling علىحدسواءفيالحالةالتييكونفيهاضغطخارجيمسلطأيضاعلىالوصلةالملولبةبالإضافةإلىقوةضاغطةكبيرة. ويكونكلمنسطحجانبيللسان pin 3 يشكلجزءسداد 13 وسطحجانبيلصندوق box 1 يشكلجزءسداد 11 مشكلينعلىشكلسطحمنحنيمحدب convex curved surface وسطحمستدق tapered surface علىالترتيب. وفيمايتعلقباللسان 3،تبلغسماكةالسداد ts للسان 15 ملمأوأقل،ويبلغمتغيرالشكل shape parameter ts/D (D: القطرالخارجيلجزءلسانالأنبوبالخام) 0.045 أوأكثر،وتبلغنسبةطولاللولبالكامل L/t (L: طولاللولبالكاملللسان، t: سماكةالجدارلجزءلسانالأنبوبالخام) 4.0 أوأقل. الشكل 1

公开(公告)号：MY180510A

公开(公告)日：2020-12-01

申请号：MYPI2013003141

申请日：2012-02-24

Applicant: JFE STEEL CORP

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

Abstract: Radial seal type threaded joints for steel pipes have still room for improvement in ensuring sealability in terms of the rigidity of the pin nose. Specifically, the outer circumferential surf ace of the nose ( 8) of the pin ( 3) has an outward convex curved shape, and the sealing surface of the box (1) has a tapered shape; and the cross- sectional area of the pin (3) at a seal point, sp that is a portion on the outer circumferential surface of the nose (8) of the pin (3), the portion first coming into contact with the sealing surf ace of the box ( 1) when threaded-joined, is 35% or more of the cross-sectional area of an original pipe portion corresponding to an unprocessed portion. Figure 1

公开(公告)号：AU2017338057B2

公开(公告)日：2020-04-09

申请号：AU2017338057

申请日：2017-09-13

Applicant: JFE STEEL CORP

Inventor： KAWAI TAKAMASA ,  KANAYAMA TARO ,  YOSHIKAWA MASAKI ,  TAKANO JUN ,  NAGAHAMA TAKUYA

IPC: F16L15/04

Abstract: Provided is a threaded joint for an oil well steel pipe having excellent sealing performance and compression resistance. The threaded joint has a pin 2 provided with a male screw 4, and a box 3 provided with a female screw 5 that screws together with the male screw 4. At an outer-circumferential seal section 9, a pin cross-sectional area S1 (mm

公开(公告)号：BR112012033452A2

公开(公告)日：2016-12-13

申请号：BR112012033452

申请日：2011-06-22

Applicant: JFE STEEL CORP

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

IPC: F16L15/04

公开(公告)号：CA2846584C

公开(公告)日：2016-10-11

申请号：CA2846584

申请日：2012-10-16

Applicant: JFE STEEL CORP

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

IPC: F16L15/04

Abstract: [Object] To provide a threaded joint for pipes that is a radial seal type joint and that has both high galling resistance and high sealability. [Solution] In the threaded joint for pipes, a coating having a Vickers hardness greater than or equal to 310 is formed on a threaded portion of the box and an inner face of the box corresponding to a seal portion. The seal interference amount ratio .delta./D of the seal portion in a pipe circumferential direction is greater than or equal to 0.002, where D is a seal diameter defined as an outside diameter of the pin at a seal point that is a point on the outer peripheral face of the nose of the pin at which the outer peripheral face first comes into contact with the inner peripheral face of the nose of the box and .delta. is an interference amount defined as an amount by which the outside diameter at the seal point is reduced by the box when the pin and the box are threadedly connected with each other.

公开(公告)号：AU2012324340A1

公开(公告)日：2014-03-20

申请号：AU2012324340

申请日：2012-10-16

Applicant: JFE STEEL CORP

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

IPC: F16L15/04

Abstract: Provided is a threaded coupling for a steel pipe having excellent galling resistance and seal performance as a radial-seal type connector. With this threaded coupling a plating having a Vickers hardness of not less than 310 is applied to the screw portion of the box and the inner surface of the box corresponding to the seal portion, and the seal interference amount ratio of the seal part in the pipe circumferential direction is not less than 0.002 as calculated with δ/D, where D is the seal diameter, defined by the pin outer diameter at the seal point, which is the region on the outer circumferential surface of the nose part on the pin-side that first makes contact with the inner circumferential surface of the nose part on the box-side when the threaded engagement is established, and δ is the amount of interference as defined by the amount by which the diameter of the seal point is reduced when the diameter of the seal point is reduced by the box, when the threaded engagement is established.

公开(公告)号：AU2012232466A1

公开(公告)日：2013-09-12

申请号：AU2012232466

申请日：2012-02-24

Applicant: JFE STEEL CORP

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

IPC: F16L15/04

Abstract: Provided is a screw joint for steel piping that exhibits excellent sealing properties even when subjected to a bending load. Specifically provided is a screw joint for steel piping in which a pin (3) and a box (1) are coupled by means of screw coupling, bringing the outer peripheral surface of the nose portion of the pin (8) and the inner peripheral surface of the nose portion of the box into metal to metal contact, this contact portion forming a seal portion (20). The load flank angle α of the screw portion (the screw coupling portion of a male screw (7) and a female screw (5)) is the load side and the torque shoulder angle &bgr; of a shoulder portion (12, 14) is the load side, and L/d

公开(公告)号：AR081782A1

公开(公告)日：2012-10-17

申请号：ARP110102284

申请日：2011-06-29

Applicant: JFE STEEL CORP

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

IPC: F16L15/00

Abstract: La presente brinda una unión roscada para una tubería, en la cual se mejoran la capacidad de sellado, la resistencia a la compresión y la resistencia al desgaste por roce. Específicamente, una superficie periférica externa de la protuberancia del pasador (30) forma una curva convexa orientada hacia afuera en la vista transversal axial; la curva convexa es tal que una curva R compuesta (N), en la cual una pluralidad de arcos convexos orientados hacia afuera que tienen diferentes radios de curvatura (Rs) se conectan secuencialmente con una línea de generación de una parte cilíndrica próxima al miembro macho (5), se curva de tal modo que los radios de curvatura (Rs) de los arcos aumentan con la distancia desde el miembro macho (5) y las tangentes en puntos de conexión de los arcos están alineadas con las de los arcos correspondientes conectados; y la superficie periférica interna de un componente caja (1) opuesta a la protuberancia del pasador (30) es una superficie cónica (20) que interfiere con la superficie periférica externa de la protuberancia del pasador (30) cuando se conecta con un componente pasador (3).

公开(公告)号：DE60205179T2

公开(公告)日：2006-03-30

申请号：DE60205179

申请日：2002-05-31

Applicant: JFE STEEL CORP

Inventor： TOYOOKA TAKAAKI ,  ARATANI MASATOSHI ,  KAWABATA YOSHIKAZU ,  HASHIMOTO YUJI ,  YORIFUJI AKIRA ,  OKABE TAKATOSHI ,  NAGAHAMA TAKUYA ,  KIMURA MITSUO

IPC: C22C38/00 ,  C22C38/04 ,  C21D7/00 ,  C21D7/13 ,  C21D8/10

Abstract: A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition containing, on the basis of mass percent: about 0.05% to about 0.2% C; about 0.2% or less of Si; about 1.5% or less of Mn; about 0.1% or less of P; about 0.01% or less of S; about 0.1% or less of Al; and about 0.01% or less of N; and by reduction-rolling the treated steel pipe at a cumulative reduction rate of at least about 35% and a final rolling temperature of about 500 DEG C to about 900 DEG C. The welded steel pipe exhibits excellent hydroformability, i.e., has a tensile strength of at least about 400 MPa and an nxr product of at least about 0.22. The treated steel pipe is preferably reduction-rolled at a cumulative reduction rate of at least about 20% below the Ar3 transformation point. The welded steel pipe is suitable for forming structural components.

公开(公告)号：DE60204082T2

公开(公告)日：2005-11-17

申请号：DE60204082

申请日：2002-05-31

Applicant: JFE STEEL CORP

Inventor： TOYOOKA TAKAAKI ,  ARATANI MASATOSHI ,  KAWABATA YOSHIKAZU ,  HASHIMOTO YUJI ,  YORIFUJI AKIRA ,  OKABE TAKATOSHI ,  NAGAHAMA TAKUYA ,  KIMURA MITSUO

IPC: C22C38/00 ,  B21B3/02 ,  B21B17/14 ,  B21B45/00 ,  B21C37/06 ,  B21D26/039 ,  B21D26/043 ,  B21D26/047 ,  C21D8/10 ,  B21B3/00

Abstract: A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition containing, on the basis of mass percent: about 0.03% to about 0.2% C, about 2.0% or less of Si, not less than about 1.0% to about 1.5% Mn, about 0.1% or less of P, about 0.01% or less of S, about 1.0% or less of Cr, about 0.1% or less of Al, about 0.1% or less of Nb, about 0.1% or less of Ti, about 0.1% or less of V, and about 0.01% or less of N; and by reduction-rolling the treated steel pipe at a cumulative reduction rate of at least about 35% and a final rolling temperature of about 500 DEG C to about 900 DEG C. The welded steel pipe exhibits excellent hydroformability, i.e., has a tensile strength of at least about 590 MPa and an nxr product of at least about 0.22. The treated steel pipe is preferably reduction-rolled at a cumulative reduction rate of at least about 20% below the Ar3 transformation point.