公开(公告)号：JP2015001252A

公开(公告)日：2015-01-05

申请号：JP2013125327

申请日：2013-06-14

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

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

IPC: F16L15/04 ,  F16B33/02

CPC classification number: E21B17/042 ,  F16B33/02 ,  F16L15/004 ,  F16L15/06

Abstract: 【課題】ねじ継手の締め付けではピン端側に軸方向の接触反力が発生して焼付きを招きやすくなる。そこで工業的生産が容易な耐焼付き性に優れた油井管用ねじ継手を提供する。【解決手段】ピンねじチャンファ長さの適正化によりねじ継手締め付け時のピン管端側ねじ部の接触反力が低減可能であることを見出した。本発明は、プレミアムジョイントにおいて、ピンねじチャンファ長さLの対ねじピッチp比L/pを1.0以上3.0以下としたことを特徴とする耐焼付き性に優れた油井管用ねじ継手である。【選択図】図1

Abstract translation: 要解决的问题：为了提供一种用于油井管的螺纹接头，其由于通过紧固螺纹接头而在销端侧发生轴向接触反应，因此易于工业制造的耐咬合性优异，因此， 容易引起缉拿。解决方案：通过使螺丝倒角长度适当，可以减少销钉端侧螺纹部分在螺纹紧固时间的接触反应。 本发明提供了一种防卡死性优良的油井管用螺纹接头，其特征在于，在螺纹倒角长度L的螺杆间距p比L / p设定为1.0〜3.0，优质接头 。

公开(公告)号：JP2014105761A

公开(公告)日：2014-06-09

申请号：JP2012258285

申请日：2012-11-27

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 sufficiently improve sealability especially at compression load.SOLUTION: An outer peripheral surface part to be a seal part 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, and a component inner peripheral surface part to be the seal part on the side of a box 1 is a composite curve surface 19 that is constituted by connecting a taper 15 positioned on a far shoulder part side and a convex surface 18 positioned on a near shoulder part side. A seal point SP is orientated in the taper 15, and a curvature radius Rb of a convex arc 17 of the convex surface 18 is larger than a curvature radius Rp of the convex arc 9 of the convex surface 10.

Abstract translation: 要解决的问题：特别是在压缩载荷下充分提高密封性。解决方案：作为在销3侧面上的密封部分的外周面部分是凸起表面10，其是围绕凸弧的轴的旋转轨迹 如图9所示，并且作为箱1侧的密封部的部件内周面部是通过将位于远侧肩部侧的锥形部15与位于远侧肩部侧的凸部18相连接而构成的复合曲面19。 近肩部侧。 密封点SP定向在锥形15中，凸面18的凸弧17的曲率半径Rb大于凸面10的凸弧9的曲率半径Rp。

公开(公告)号：JP2014001819A

公开(公告)日：2014-01-09

申请号：JP2012138442

申请日：2012-06-20

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

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

IPC: F16L15/04

Abstract: PROBLEM TO BE SOLVED: To provide a screw joint in which a thread part is capable of sufficiently resisting both of tensile force and compressive force in a pipe axial direction to maintain sealability.SOLUTION: A screw joint for steel pipe comprises a pin 1 including a taper male thread part 11 and a non-threaded part 3 provided at a tip side from the taper male thread part 11, and a box 2 including a taper female thread part 21 and a non-threaded part 3 corresponding to the taper male thread part 11 and the non-threaded 3, respectively. The pin 1 and the box 2 are screw-jointed to bring the non-threaded part 3 of the pin 1 and the non-threaded part 3 of the box 2 into metal-to-metal contact with each other in a circumferential direction at one or more portions in a pipe axial direction so that fluid in a pipe will be blocked. In the screw joint, a contact surface 7 between bottom of thread of the pin and thread ridge of the box tapers in a direction opposite to a thread tapered surface 8 with respect to a pipe axial direction 4 to form a tapered surface 14 (or 14A), and a counter surface 10 between thread ridge of the pin and bottom of thread of the box forms a surface 9 parallel to the tapered surface 8.

Abstract translation: 要解决的问题：提供一种螺纹接头，其中螺纹部分能够充分抵抗管轴向的拉伸力和压缩力两者以保持密封性。解决方案：一种用于钢管的螺纹接头，包括：销1，其包括 锥形外螺纹部11和设置在锥形外螺纹部11的前端侧的非螺纹部3以及包括锥形内螺纹部21和与锥形外螺纹部对应的非螺纹部3的箱体2 11和非螺纹3。 销1和箱体2被螺纹连接，使销1的无螺纹部分3和箱体2的非螺纹部分3在圆周方向上彼此金属 - 金属接触 或更多的部分，使得管道中的流体将被阻塞。 在螺纹接头中，销的螺纹底部和箱体的螺纹脊之间的接触表面7在相对于管轴方向4的方向与螺纹锥形表面8相反的方向逐渐变细，以形成锥形表面14（或14A ），并且在销的螺纹脊和箱体的螺纹底部之间的对置表面10形成平行于锥形表面8的表面9。

公开(公告)号：JP2013224707A

公开(公告)日：2013-10-31

申请号：JP2012097525

申请日：2012-04-23

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 ,  C23C22/78

Abstract: PROBLEM TO BE SOLVED: To enhance wear resistance and galling resistance while securing sufficient sealing property.SOLUTION: Grooves 8 in a peripheral direction in which an average surface roughness Ra in a pipe axial direction is not less than 1.0 μm and not more than 5.0 μm by is provided cutting in a seal part 4 of a pin side or a box side being a side applied to film forming processing before carrying out phosphate base film forming processing. Further, small unevenness at an extent not damaging the unevenness of the groove is formed by shot blusting, and there after the film forming processing is carried out.

Abstract translation: 要解决的问题：在确保足够的密封性的同时提高耐磨性和耐磨损性。解决方案：管轴方向上的平均表面粗糙度Ra不小于1.0μm且不大于5.0μm的圆周方向上的槽8 在进行磷酸盐底膜形成处理之前，在作为成膜处理的一侧的销侧或箱侧的密封部4中切割。 此外，通过喷射形成不破坏槽的凹凸的程度的小的不均匀性，并且在成膜处理之后进行。

公开(公告)号：JP2013029174A

公开(公告)日：2013-02-07

申请号：JP2011166276

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 improve securement of sealing performance when a high axial compression force is applied to a steel pipe screw joint of a radial seal type.SOLUTION: In the screw joint, a nose part outer circumferential surface 31 of a pin 3 has an outwardly convex curved shape, a seal surface 21 of a box 1 is tapered, an angle α formed by a seal tapered surface 21 of the box being the seal surface 21 and a tube axis direction line 2 is 2 to 10°, and an angle θ formed by a shoulder surface 16 and a pipe axis orthogonal surface 10 is 3 to 10°.

Abstract translation: 要解决的问题：当向径向密封型钢管螺纹接头施加高轴向压缩力时，提高密封性能的固定。 解决方案：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的密封表面21是锥形的，由α的密封锥形表面21形成的角度α 作为密封面21的盒子，管轴方向线2为2〜10°，由肩面16和管轴正交面10形成的角度θ为3〜10°。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012193844A

公开(公告)日：2012-10-11

申请号：JP2012025825

申请日：2012-02-09

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 ,  SONOBE OSAMU

IPC: F16L15/04

CPC classification number: F16L15/00 ,  E21B17/042 ,  F16L15/001 ,  F16L15/06

Abstract: PROBLEM TO BE SOLVED: To solve the problem that there is a room for improvement in ensuring the seal in terms of the rigidity of a pin nose in a radial-seal type threaded coupling for a steel pipe.SOLUTION: A nose portion outer peripheral surface of a pin 3 is provided with a shape of an outwardly convex curved surface, a seal surface of a box 1 is provided with a tapered shape, and a cross-sectional area S1 of a pin at a seal point (sp), which is part on the nose portion outer peripheral surface of the pin that first comes into contact with the seal surface of the box when establishing a threaded engagement, is set to be equal to or greater than 35% of the cross-sectional area S0 of a base pipe portion, which is an unprocessed portion of the pin.

Abstract translation: 解决的问题：为了解决在用于钢管的径向密封型螺纹联接器中确保针尖的刚性方面存在改进的空间的问题。 解决方案：销3的鼻部外周面设置有向外凸出的曲面的形状，盒1的密封面设有锥形，并且横截面积S1为 在形成螺纹接合时首先与盒的密封面接触的位于销的鼻部外周面上的密封点（sp）的销被设定为等于或大于35 作为销的未加工部分的基管部分的横截面积S0的百分比。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2009114526A

公开(公告)日：2009-05-28

申请号：JP2007291104

申请日：2007-11-08

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

Inventor： TAJI YUUKI ,  HASEGAWA KOHEI ,  KAWAI TAKAMASA

IPC: C22C38/00 ,  B21B1/22 ,  C21D9/46 ,  C22C38/06 ,  C22C38/38 ,  C23C22/78

Abstract: PROBLEM TO BE SOLVED: To provide a high-workability high-strength cold rolled steel sheet having excellent chemical conversion treatability, and to provide a method for production thereof. SOLUTION: This steel sheet is characterized in that: it has a composition consisting of, by mass, 0.05 to 0.30% C, 0.8 to 3.0% Si, 1.0 to 3.0% Mn, ≤0.10% P, ≤0.01% S, 0.01 to 0.1% Al, ≤0.008% N and the balance Fe with inevitable impurities; it has, at its surface, flat portions in which an estrangement from a filtered waviness curve, with respect to a roughness cross sectional curve 1, is ≤±2 μm and recessed portions in which a maximum depth from the filtered waviness curve is ≥5 μm; the average area of the recessed portions 2 is 0.001 to 0.1 mm 2 ; and the area ratio of the recessed portions is 5 to 50%. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 待解决的问题：提供具有优异的化学转化处理性的高加工性高强度冷轧钢板，并提供其制造方法。 钢板的特征在于：其组成为：质量为0.05〜0.30％的Si，0.8〜3.0％的Si，1.0〜3.0％的Mn，≤0.10％的P，≤0.01％的S ，0.01〜0.1％Al，≤0.008％N，余量为Fe与不可避免的杂质; 在其表面上，相对于粗糙度横截面曲线1，来自滤波波纹曲线的异常的平坦部分为≤±2μm，其中从滤波波纹曲线的最大深度为≥5的凹部 μm; 凹部2的平均面积为0.001〜0.1mm 2 ; 凹部的面积比为5〜50％。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2015028346A

公开(公告)日：2015-02-12

申请号：JP2013157315

申请日：2013-07-30

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

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

IPC: F16L15/04

CPC classification number: F16L15/06 ,  E21B17/042 ,  E21B17/08

Abstract: 【課題】ねじ継手締付け過程におけるシール部の接触力によるピン先端の縮径変形に起因するショルダ部での局所的な塑性変形のみならず圧縮負荷時のショルダ部全面の過大な塑性変形を防止でき、以て耐久性に優れた油井管用ねじ継手を提供する。【解決手段】プレミアムジョイントにおいて、ピン側ショルダ角&thetas;1、ボックス側ショルダ角&thetas;2、シール干渉量δ、シールポイント距離xpが、&thetas;2−&thetas;1=α?δ/xp、α=7〜14、なる関係を満足し、かつ、ピン最先端部半径Reとピン先端部内半径Riの差Re−Riで定義されるピン先端厚みtp1がピン素管厚tp0の0.25倍以上であるねじ継手とした。【選択図】図2

Abstract translation: 要解决的问题：提供一种具有优异耐久性的油井管的螺纹接头，其不仅能够防止由于密封部的接​​触力导致的销尖的直径减小变形而引起的肩部的局部塑性变形 螺钉接头紧固工艺，也可以在压缩时承受肩部部分整个表面的过度塑性变形。解决方案：在高档接头中，用于针脚肩角度和角度; 1，箱体侧肩角度＆2; 2 ，密封干涉量δ和密封点距离xp，满足以下关系：＆het; 2＆thetas; 1 =α×δ/ xp，其中α= 7〜14。另外，在高级接头中， 由针尖部半径Re与针尖部内部半径Ri之间的差Re-Ri所定义的尖端厚度tp1为针元件管厚度tp0的0.25倍。

公开(公告)号：JP2014156913A

公开(公告)日：2014-08-28

申请号：JP2013028659

申请日：2013-02-18

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

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

IPC: F16L15/04

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

Abstract: PROBLEM TO BE SOLVED: To provide a screw joint for pipe connection which is hard to cause plastic deformation in a box side and is excellent in anti-galling properties, even when repeated load of tension/compression is applied to a pipe.SOLUTION: A screw joint for pipe connection satisfies a relation of 0.05 degrees≤θsb-θsp≤2.0 degrees, where the angle θsb is an angle between a female screw insertion face 21 of the joint in a side of a box 1 and a face perpendicular to a pipe axis, and the angle θsp is an angle between a male screw insertion face 20 opposing to the female screw insertion face 21 in a side of a pin 3 and the face perpendicular to the pipe axis.

Abstract translation: 要解决的问题：为了提供一种用于管连接的螺纹接头，其难以在箱体侧引起塑性变形，并且即使当对管道施加反复的张力/压缩载荷时，也具有优异的抗磨损性能。解决方案：A 用于管道连接的螺纹接头满足关系为0.05度≤＆amp; t; sb-＆thetas;sp≤2.0度，其中角度＆amp; sb是盒1侧的接头的内螺纹插入面21与角度 垂直于管轴的面，角度和角度; sp是在销3的一侧与阴螺纹插入面21相对的外螺纹插入面20与垂直于管轴的面之间的角度。

公开(公告)号：JP2014101983A

公开(公告)日：2014-06-05

申请号：JP2012256078

申请日：2012-11-22

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 pipe screw joint suitable for the connection of steel pipes such as oil well pipes, riser pipes and line pipes, and excellent in seal performance and compression resistance.SOLUTION: In the pipe screw joint, shoulders 12, 14 of a pin 3 and a box 1 at least partially form abutting faces 22, 24 that abut on each other, the abutting faces are tapered faces having screw joint shaft orthogonal planes 30, or counterflow centripetal normals 22H at a pin side, and counterflow centrifugal normals 24H at a box side, a shoulder angle θ being a crossing angle between the abutting faces 22, 24 and the screw joint orthogonal planes 30 is not smaller than 0° and not larger than 20°, and an outside diameter Dsp of the abutting face 22 at the pin side is smaller than an outside diameter Dsb of the abutting face 24 at the box side.

Abstract translation: 要解决的问题：提供适用于油井管，立管和管道管等钢管连接的管螺纹接头，密封性能好，抗压缩性好。解决方案：在管螺纹接头， 销3和箱体1至少部分地形成彼此抵接的邻接面22,24，抵接面是具有螺纹接头轴正交平面30或销侧的逆向向心法线22H的锥形面和逆流 离心法线24H在箱体侧，肩角＆thetas; 邻接面22,24与螺纹接合面正交面30之间的交叉角度不小于0°且不大于20°，并且接触面22在销侧的外径Dsp小于外侧 在盒侧的抵接面24的直径Dsb。