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：SE0303372D0

公开(公告)日：2003-12-16

申请号：SE0303372

申请日：2003-12-16

Applicant: JFE STEEL CORP

Inventor： UETA MASATERU ,  NAKAMURA NAOMICHI ,  MAETANI TOSHIO ,  UENOSONO SATOSHI

IPC: B22F1/02 ,  H01F1/06 ,  H01F1/147 ,  H01F1/153 ,  H01F1/24 ,  H01F

Abstract: This invention provides a metal powder for powder magnetic cores, which have good insulation performance and high magnetic flux density, and which is favorable for motor cores. Ferromagnetic metal powder may be coated with a coating material and a phosphate or phosphoric acid compound containing aluminum is used for the coating material. Coating the surface of iron powder with aluminum phosphate realizes to produce high-quality powder magnetic cores that have good insulation performance and high magnetic flux density and are favorable for motor cores. Further coating the aluminum phosphate-coated metal powder with silane compound or surfactant realizes more stable compressed shaped articles of the powder. And the properties of the articles do not fluctuate while stored for, so long as they are resistant to moisture. This invention contributes to producing powder magnetic cores for motors, and to the process for powder magnetic cores, furthermore, to the related art field.

公开(公告)号：CA3013300C

公开(公告)日：2020-05-05

申请号：CA3013300

申请日：2016-12-16

Applicant: JFE STEEL CORP

Inventor： KAWAI TAKAMASA ,  KANAYAMA TARO ,  YOSHIKAWA MASAKI ,  SEKI HARUHIKO ,  UETA MASATERU ,  TAKANO JUN ,  YONEYAMA TSUYOSHI

IPC: F16L15/04

Abstract: Provided is a threaded joint for an oil well tubing which possesses sufficient sealability when the external pressure is applied to the threaded joint by suppressing the plastic deformation of a nose portion and sufficient galling resistance. The sufficient galling resistance is provided by preventing the occurrence of galling at the time of making up the threaded joint during verification test performed in accordance with IS013679:2002 even when the threaded joint for an oil well tubing has a small thickness. Parameters including sizes of the threaded joint at positions of a seal point and shoulder portions satisfy the following formulae 1, 2 and Ls/Ln is set to 0.2 to 0.6. (Ds1 2-Ds0 2)/( D1 2-D0 2) >=0.30 ... (formula 1) tan.theta.> (.DELTA.D+6)/{2(Lt-Ls)} ... (formula 2)

公开(公告)号：ES2677103T3

公开(公告)日：2018-07-30

申请号：ES12841901

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: Una junta roscada para tuberías que comprende: un pasador (3) que incluye una porción (7) roscada externamente y un resalto (8) que se extiende desde la porción (7) roscada externamente hacia un extremo de una tubería; y una caja (1) que incluye una porción (5) roscada internamente y una cara periférica interior de un resalto, la porción (5) roscada internamente que forma una porción roscada al estar conectada de forma roscada con la porción (7) roscada externamente, la cara periférica interior del resalto enfrentada a una cara periférica exterior del resalto (8) del pasador (3), en donde, cuando el pasador (3) y la caja (1) están conectados de manera roscada entre sí y la cara periférica exterior del resalto (8) del pasador (3) y la cara periférica interior del resalto de la caja (1) se ponen en contacto metal a metal entre sí en una dirección radial en una porción de contacto, la porción de contacto sirve como una porción de sellado, en donde una relación δ/D de cantidad de interferencia de sellado de la porción de sellado en una dirección circunferencial de tubería es mayor que o igual a 0.002, donde D es un diámetro de sello definido como un diámetro exterior del pasador (3) en un punto de sellado que es un punto en la cara periférica exterior del resalto (8) del pasador (3), en la que la cara periférica exterior primero se pone en contacto con la cara periférica interior del resalto de la caja (1) y δ es una cantidad de interferencia definida como una cantidad por la cual el diámetro exterior en el punto de sellado se reduce por la caja (1) cuando el pasador (3) y la caja (1) se conectan de manera roscada entre sí, caracterizado porque se forma un recubrimiento que incluye un recubrimiento de aleación de Cu-Sn o un recubrimiento Cr que tiene una dureza Vickers mayor que o igual a 310 y menor o igual a 700 en la porción (5) roscada de la caja (1) y una cara interna de la caja (1) correspondiente a la porción de sellado.

公开(公告)号：BR112013024151A2

公开(公告)日：2016-12-20

申请号：BR112013024151

申请日：2012-02-24

Applicant: JFE STEEL CORP

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

IPC: F16L15/04

Abstract: resumo patente de invenção: "junta roscada para tubos de aço". a presente invenção refere-se a uma junta roscada para tubos de aço tendo alta capacidade de vedação mesmo sob uma carga de flexão. para ser específico, na junta roscada, quando um pino 3 e uma caixa 1 são conectados de modo roscado um com outro, a face periférica externa de uma ponta dianteira 8 do pino e a face periférica interna de uma ponta dianteira da caixa ficam em contacto de metal com metal uma com a outra em uma porção de contacto e a porção de contacto serve como uma porção de vedação 20. uma porção roscada (em que a porção externamente roscada 7 e a porção internamente roscada 5 são conectadas de modo roscado uma com a outra) tem um ângulo de flanco de carga negativo a , porções de ressalto 12 e 14 têm um ângulo de ressalto de torque negativo ß e a razão l/do de uma extensão l da ponta dianteira e um diâmetro externo do tubo do é igual a ou mais alta do que 0,08.

公开(公告)号：CA2827922C

公开(公告)日：2016-10-11

申请号：CA2827922

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 threaded joint for steel pipes having high sealability even under a bending load. To be specific, in the threaded joint, when a pin 3 and a box 1 are threadedly connected with each other, the outer peripheral face of a nose 8 of the pin and the inner peripheral face of a nose of the box are in metal-to-metal contact with each other at a contact portion and the contact portion serves as a seal portion 20. A threaded portion (at which the externally threaded portion 7 and the internally threaded portion 5 are threadedly connected with each other) has a negative load flank angle .alpha., shoulder portions 12 and 14 have a negative torque shoulder angle .beta., and the ratio L/d0 of a length L of the nose and a pipe outside diameter do is equal to or higher than 0.08.

公开(公告)号：AU2014376828B2

公开(公告)日：2016-09-22

申请号：AU2014376828

申请日：2014-10-30

Applicant: JFE STEEL CORP

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

IPC: F16L15/04

Abstract: The purpose of the present invention is to provide a threaded joint for an ultra thick oil well pipe, the joint being able to maintain sealability and prevent the occurrence of galling in a state where a high compressive force is applied and high external pressure acts on the joint. A surface of a pin (3) that serves as sealing parts (13, 11) and a surface on a box (1) side respectively have a convex curved surface and a tapered surface. With respect to the pin (3), a pin seal thickness t

公开(公告)号：CA2827619C

公开(公告)日：2016-02-09

申请号：CA2827619

申请日：2012-02-24

Applicant: JFE STEEL CORP

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

IPC: F16L15/04

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 surface 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 surface of the box 1 when threaded-joined, is 33% or more of the cross-sectional area of an original pipe portion corresponding to an unprocessed portion.

公开(公告)号：MX335962B

公开(公告)日：2016-01-05

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: F16L25/00 ,  F16L15/06

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.