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    junta rosqueada para tubos
    91.
    发明专利
    junta rosqueada para tubos 未知

    公开(公告)号：BR112013021810A2

    公开(公告)日：2016-10-25

    申请号：BR112013021810

    申请日：2012-02-24

    Applicant: JFE STEEL CORP

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

    IPC: F16L15/04

    Abstract: resumo patente de invenção: "junta rosqueada para tubos". a presente invenção refere-se a juntas rosqueadas do tipo de vedação radial para tubos de aço que ainda tem espaço para aprimoramento no sentido de assegurar a capacidade de vedação em termos da rigidez do bico de pino. de maneira específica, a superfície circunferencial externa do bico 8 do pino 3 tem um formato curvo convexo para fora, e a superfície de vedação da caixa 1 tem um formato cônico; e a área em corte transversal do pino 3 em um ponto de vedação sp, que é uma porção na superfície circunferencial externa do bico 8 do pino 3, a porção que entra em contato primeiro com a superfície de vedação da caixa 1 quando unida de maneira rosqueada, é de 35% ou mais da área em corte transversal de uma porção de tubo original que corresponde a uma porção não processada.

    Threaded coupling for pipe
    94.
    发明专利
    Threaded coupling for pipe 未知

    公开(公告)号：AU2012324340B2

    公开(公告)日：2016-01-07

    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.

    UNION ROSCADA PARA TUBERIAS DE ACERO.
    95.
    发明专利
    UNION ROSCADA PARA TUBERIAS DE ACERO. 未知

    公开(公告)号：MX2013010500A

    公开(公告)日：2013-10-01

    申请号：MX2013010500

    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 MASATERU

    IPC: F16L15/04

    Abstract: Se proporciona una unión roscada para tuberías de acero que tiene una alta capacidad de sellado incluso bajo un carga de doblado. Específicamente, en la unión roscada, cuando un perno 3 y una caja 1 están conectados de forma roscada entre sí, la cara periférica externa de una nariz 8 del perno y la cara periférica interna de una nariz de la caja están en contacto de metal a metal entre si en una porción de contacto y la porción de contacto sirve como una porción de sello 20. Una porción roscada (en la cual la porción roscada externamente 7 y la porción roscada internamente 5 están conectadas de forma roscada entre si) tiene un ángulo de flanco de carga negativo c, porciones de reborde 12 y 14 tienen un ángulo de reborde de torque negativo ß, y la relación L/d0 de una longitud L de la nariz y un diámetro exterior de la tubería d0 es igual a o mayor que 0.08.

    THREADED JOINT FOR PIPES
    96.
    发明专利
    THREADED JOINT FOR PIPES 未知

    公开(公告)号：CA2846584A1

    公开(公告)日：2013-04-25

    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: 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 d/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 d 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.

    JUNTA ROSCADA PARA TUBO.
    97.
    发明专利
    JUNTA ROSCADA PARA TUBO. 未知

    公开(公告)号：MX2012014880A

    公开(公告)日：2013-01-24

    申请号：MX2012014880

    申请日：2011-06-22

    Applicant: JFE STEEL CORP

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

    IPC: F16L15/04

    Abstract: Se proporciona una junta roscada para un tubo en la cual se mejoran la capacidad de sellado, la resistencia a la compresión y la resistencia a la corrosión por frotamiento. Específicamente, una superficie periférica exterior de nariz de espiga (30) forma una curva convexa exterior en una vista axial en sección transversal; la curva convexa es tal que una curva R compuesta (N), en la cual una pluralidad de arcos convexos exteriores que tienen diferentes radios de curvatura (Rs) se conectan en secuencia a una línea generadora de una porción cilíndrica próxima a un miembro macho (5), está curveada tal que los radios de curvatura (Rs) se incrementan con la distancia desde el miembro macho (5) y las tangentes en los puntos de conexión de los arcos se alinean con aquellas de los arcos correspondientes conectados a esto; y la superficie periférica interior de un componente hembra (1) que hacia la nariz de espiga (30) es una superficie ahusada (20) que interfiere con la superficie periférica exterior de nariz de espiga (30) cuando se conecta a un componente de espiga (3).

    THEADED JOINT FOR PIPE
    98.
    发明专利
    THEADED JOINT FOR PIPE 未知

    公开(公告)号：CA2801204A1

    公开(公告)日：2012-01-05

    申请号：CA2801204

    申请日：2011-06-22

    Applicant: JFE STEEL CORP

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

    IPC: F16L15/04

    Abstract: Disclosed is a pipe screw coupling that has increased sealing properties, compression resistance, and galling resistance. Specifically, the pin nose outer peripheral surface (30) forms a convex curve on the outside thereof in a cross section in the axial direction. Said convex curve has a curved shape wherein a compound-R curve (N) comprising a plurality of outwardly convex arcs that are connected in sequence and that have radii of curvature (R) that differ from each other at the generating line of a cylindrical section that is adjacent to a male screw section (5) is such that the radii of curvature (R) of the arcs increase with distance from the male screw section (5) and the line tangent to the connection point of an arc is the same as that of the arc connected to. The inner peripheral surface relative to the pin nose (30) of a box member (1) has a tapered surface (20) that interferes with the pin nose outer peripheral surface (30) when connecting with the pin member (3).

    THREADED PIPE JOINT
    99.
    发明公开
    THREADED PIPE JOINT 审中-公开

    公开(公告)号：EP3279538A4

    公开(公告)日：2018-06-06

    申请号：EP16771775

    申请日：2016-03-28

    Applicant: JFE STEEL CORP

    Inventor： YOSHIKAWA MASAKI ,  TAKAHASHI KAZUNARI ,  KANAYAMA TARO ,  TAKANO JUN ,  KAWAI TAKAMASA ,  YONEYAMA TSUYOSHI

    IPC: F16L15/04 ,  E21B17/042 ,  E21B17/08

    CPC classification number: E21B17/085 ,  E21B17/0423 ,  E21B17/08 ,  F16L15/04

    Abstract: Provided is a threaded pipe joint in which under a tensile load, fracture on the female thread side of the first thread portion of the second thread row continuous with the intermediate shoulder is avoided, and tensile fracture certainly occurs on the female thread side of the first thread portion of the first thread row, which is the location of the normal critical cross-section. Under a condition where the female and male threads of the intermediate shoulder are engaged with each other, the load-flank-side thread gap L1G of a first thread row that is the thread row on the radially inner side and the load-flank-side thread gap L2G of a second thread row that is the thread row on the radially outer side, with the intermediate shoulder interposed therebetween, always satisfy the relationship L1G

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