公开(公告)号：US09194190B2

公开(公告)日：2015-11-24

申请号：US13807883

申请日：2011-06-22

申请人： Osamu Sonobe ,  Takuya Nagahama ,  Masaki Yoshikawa ,  Jun Takano ,  Takamasa Kawai ,  Kazunari Takahashi

发明人： Osamu Sonobe ,  Takuya Nagahama ,  Masaki Yoshikawa ,  Jun Takano ,  Takamasa Kawai ,  Kazunari Takahashi

IPC分类号： F16L15/00 ,  E21B17/042 ,  F16L15/06

CPC分类号： E21B17/042 ,  F16L15/00 ,  F16L15/004 ,  F16L15/06

摘要： A threaded joint for a pipe is disclosed in which scalability, compression resistance, and galling resistance are enhanced. The threaded joint includes a pin nose outer peripheral surface that forms an outward convex curve in an axial cross-sectional view; the convex curve is such that a composite R curve, in which a plurality of outward convex arcs having different radiuses of curvature are connected in sequence to a generating line of a cylindrical portion next to a male member, is curved such that the radiuses of curvature increase with distance from the male member and tangents on connection points of the arcs are aligned with those of corresponding arcs connected thereto; and the inner peripheral surface of a box component facing the pin nose is a tapered surface that interferes with the pin nose outer peripheral surface when connected to a pin component.

摘要翻译： 公开了一种用于管道的螺纹接头，其中增强了可伸缩性，抗压缩性和耐磨损性。 螺纹接头包括在轴向横截面视图中形成向外凸曲线的销头外周表面; 凸曲线使得其中具有不同的曲率半径的多个向外凸起的弧线与邻近阳构件的圆柱形部分的生成线连续地连接的复合R曲线弯曲成使得曲率半径 随着与阳构件的距离增加并且在圆弧的连接点上的切线与与其连接的相应弧的弧线对准; 并且面向销头的箱体部件的内周面是与销部件连接时与销头外周面相干涉的锥形面。

公开(公告)号：US20140049045A1

公开(公告)日：2014-02-20

申请号：US14006245

申请日：2012-02-24

申请人： Masaki Yoshikawa ,  Takuya Nagahama ,  Hiroshi Chikatsune ,  Jun Takano ,  Takamasa Kawai ,  Kazunari Takahashi ,  Masateru Ueta ,  Osamu Sonobe

发明人： Masaki Yoshikawa ,  Takuya Nagahama ,  Hiroshi Chikatsune ,  Jun Takano ,  Takamasa Kawai ,  Kazunari Takahashi ,  Masateru Ueta ,  Osamu Sonobe

IPC分类号： F16L15/00

CPC分类号： F16L15/001 ,  E21B17/042 ,  F16L15/004 ,  F16L15/06

摘要： Provided is a threaded joint for steel pipes having high sealability even under a bending load. 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 α, shoulder portions 12 and 14 have a negative torque shoulder angle β, and the ratio L/d0 of a length L of the nose and a pipe outside diameter d0 is equal to or higher than 0.08.

摘要翻译： 即使在弯曲载荷下也具有高密封性的钢管用螺纹接头。 在螺纹接头中，当销3和盒1彼此螺纹连接时，销的鼻部8的外周面和箱的鼻部的内周面与金属对金属接触 彼此在接触部分处，并且接触部分用作密封部分20.外螺纹部分7和内螺纹部分5彼此螺纹连接的螺纹部分具有负的负载侧角α， 肩部12和14具有负扭矩肩角β，并且鼻部长度L和管外径d0的比L / d0等于或高于0.08。

公开(公告)号：US20130181442A1

公开(公告)日：2013-07-18

申请号：US13807883

申请日：2011-06-22

申请人： Osamu Sonobe ,  Takuya Nagahama ,  Masaki Yoshikawa ,  Jun Takano ,  Takamasa Kawai ,  Kazunari Takahashi

发明人： Osamu Sonobe ,  Takuya Nagahama ,  Masaki Yoshikawa ,  Jun Takano ,  Takamasa Kawai ,  Kazunari Takahashi

IPC分类号： E21B17/042 ,  F16L15/00

CPC分类号： E21B17/042 ,  F16L15/00 ,  F16L15/004 ,  F16L15/06

摘要： Provided is a threaded joint for a pipe in which scalability, compression resistance, and galling resistance are enhanced. Specifically, a pin nose outer peripheral surface forms an outward convex curve in an axial cross-sectional view; the convex curve is such that a composite R curve, in which a plurality of outward convex arcs having different radiuses of curvature are connected in sequence to a generating line of a cylindrical portion next to a male member, is curved such that the radiuses of curvature increase with distance from the male member and tangents on connection points of the arcs are aligned with those of corresponding arcs connected thereto; and the inner peripheral surface of a box component facing the pin nose is a tapered surface that interferes with the pin nose outer peripheral surface when connected to a pin component.

摘要翻译： 提供了一种用于管道的螺纹接头，其中可扩展性，抗压缩性和耐磨损性提高。 具体地，针鼻外周面在轴向剖视图中形成向外的凸曲线; 凸曲线使得其中具有不同的曲率半径的多个向外凸起的弧线与邻近阳构件的圆柱形部分的生成线连续地连接的复合R曲线弯曲成使得曲率半径 随着与阳构件的距离增加并且在圆弧的连接点上的切线与与其连接的相应弧的弧线对准; 并且面向销头的箱体部件的内周面是与销部件连接时与销头外周面相干涉的锥形面。

公开(公告)号：US08322178B2

公开(公告)日：2012-12-04

申请号：US12519468

申请日：2007-12-06

申请人： Takamasa Kawai ,  Yukio Kimura

发明人： Takamasa Kawai ,  Yukio Kimura

IPC分类号： B21B1/00 ,  B21B39/20 ,  B44B5/00

CPC分类号： C21D1/26 ,  B21B1/22 ,  B21B1/227 ,  B21B3/00 ,  B21B27/005 ,  B21B2267/10 ,  C21D9/46

摘要： Temper rolling at a total elongation percentage of 0.1% or more is performed on a steel strip using a temper rolling mill in which at least one roll stand having high roughness work rolls, the center-line averaged roughness Ra of which being in the range of 3.0 to 10.0 μm, is provided, or at least one roll stand having bright rolls is further provided downstream of the above roll stand, and as a result, a predetermined elongation percentage, flatness, and center-line averaged roughness can be imparted even to a steel strip having a yield strength of 340 MPa or more at a rolling load approximately equivalent to that for a mild steel without using a large facility and complicated control. In particular, a high tensile-strength cold rolled steel sheet having an Ra of 0.5 to 3.0 μm and superior die galling resistance is obtained.

摘要翻译： 使用回火轧机在钢带上进行总伸长率为0.1％以上的回火轧制，其中至少一台具有高粗糙度工作辊的轧机机架的中心线平均粗糙度Ra在 3.0至10.0μm，或者至少一个具有明亮辊的辊架还设置在上述轧辊架的下游，结果，即使在预定的伸长率，平直度和中心线平均粗糙度 在不使用大型设备和复杂控制的情况下，在低于中等钢的轧制载荷下的屈服强度为340MPa以上的钢带。 特别地，可以获得Ra为0.5〜3.0μm的高抗拉强度的冷轧钢板，并且可以获得优异的抗模具耐磨性。

公开(公告)号：US20100035079A1

公开(公告)日：2010-02-11

申请号：US12527879

申请日：2007-12-14

申请人： Kohei Hasegawa ,  Tadashi Inoue ,  Takamasa Kawai ,  Yukio Kimura

发明人： Kohei Hasegawa ,  Tadashi Inoue ,  Takamasa Kawai ,  Yukio Kimura

IPC分类号： B32B3/30 ,  B21B1/22 ,  B21B23/00

CPC分类号： C22C38/06 ,  B21B1/227 ,  B21B27/005 ,  B21B2001/228 ,  B21B2265/14 ,  B21B2267/10 ,  C21D7/04 ,  C21D8/02 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  Y10T428/12389

摘要： A high-strength cold-rolled steel sheet having a tensile strength of 340 MPa or more, which can prevent galling, can be manufactured even if a large number of the steel sheets are continuously press-formed. This is because a surface texture thereof is con-trolled so that the surface texture includes flat areas in which a roughness profile has a deviation of ±2 μm or less from a filtered waviness curve and a dented portion having a maximum depth between 10 μm and 50 μm from the filtered waviness curve, wherein an average area of the dented portion is more than 0.01 mm2 and 0.2 mm2 or less, and an area fraction of the dented portion relative to the entire surface thereof is 5% or more and less than 20%.

摘要翻译： 即使连续地压制多个钢板，也可以制造能够防止磨损的抗拉强度为340MPa以上的高强度冷轧钢板。 这是因为其表面纹理被控制，使得表面纹理包括平坦区域，其中粗糙度轮廓与过滤的波纹曲线具有±2μm或更小的偏差，以及具有最大深度在10um和 50μm，其中凹陷部分的平均面积大于0.01mm 2和0.2mm 2或更小，并且凹陷部分相对于其整个表面的面积分数为5％以上且小于20％ ％。

公开(公告)号：US09657873B2

公开(公告)日：2017-05-23

申请号：US14001944

申请日：2012-02-24

申请人： Takamasa Kawai ,  Kazunari Takahashi ,  Hiroshi Chikatsune ,  Masaki Yoshikawa ,  Jun Takano ,  Takuya Nagahama ,  Masateru Ueta ,  Osamu Sonobe

发明人： Takamasa Kawai ,  Kazunari Takahashi ,  Hiroshi Chikatsune ,  Masaki Yoshikawa ,  Jun Takano ,  Takuya Nagahama ,  Masateru Ueta ,  Osamu Sonobe

IPC分类号： F16L15/00 ,  F16L15/06 ,  E21B17/042

CPC分类号： F16L15/00 ,  E21B17/042 ,  F16L15/001 ,  F16L15/06

摘要： A threaded joint for steel pipes that includes a pin and a box. The pin has an externally threaded portion, a nose, and a shoulder portion. The box has an internally threaded portion, a sealing surface, and a shoulder portion. The outer circumferential surface of the nose of the pin has an outward convex curved shape, and the sealing surface of the box has a tapered shape. Additionally, the cross-sectional area of the pin at a seal point is 35% or more of the cross-sectional area of an original pipe portion corresponding to an unprocessed portion of the pin, the seal point being a portion on the pin that first comes into contact with the sealing surface of the box when the pin and the box are joined.

公开(公告)号：US08991875B2

公开(公告)日：2015-03-31

申请号：US14006245

申请日：2012-02-24

申请人： Masaki Yoshikawa ,  Takuya Nagahama ,  Hiroshi Chikatsune ,  Jun Takano ,  Takamasa Kawai ,  Kazunari Takahashi ,  Masateru Ueta ,  Osamu Sonobe

发明人： Masaki Yoshikawa ,  Takuya Nagahama ,  Hiroshi Chikatsune ,  Jun Takano ,  Takamasa Kawai ,  Kazunari Takahashi ,  Masateru Ueta ,  Osamu Sonobe

IPC分类号： F16L25/00 ,  F16L15/00 ,  F16L15/06

CPC分类号： F16L15/001 ,  E21B17/042 ,  F16L15/004 ,  F16L15/06

摘要： Provided is a threaded joint for steel pipes having high sealability even under a bending load. 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 α, shoulder portions 12 and 14 have a negative torque shoulder angle β, and the ratio L/d0 of a length L of the nose and a pipe outside diameter d0 is equal to or higher than 0.08.

摘要翻译： 即使在弯曲载荷下也具有高密封性的钢管用螺纹接头。 在螺纹接头中，当销3和盒1彼此螺纹连接时，销的鼻部8的外周面和箱的鼻部的内周面与金属对金属接触 在接触部分彼此接触并且接触部分用作密封部分20.外螺纹部分7和内螺纹部分5彼此螺纹连接的螺纹部分具有负的负载侧面角α， 肩部12和14具有负扭矩肩角＆bgr;并且鼻部长度L和管外径d0的比L / d0等于或大于0.08。

公开(公告)号：US20140116560A1

公开(公告)日：2014-05-01

申请号：US14001944

申请日：2012-02-24

申请人： Takamasa Kawai ,  Kazunari Takahashi ,  Hiroshi Chikatsune ,  Masaki Yoshikawa ,  Jun Takano ,  Takuya Nagahama ,  Masateru Ueta ,  Osamu Sonobe

发明人： Takamasa Kawai ,  Kazunari Takahashi ,  Hiroshi Chikatsune ,  Masaki Yoshikawa ,  Jun Takano ,  Takuya Nagahama ,  Masateru Ueta ,  Osamu Sonobe

IPC分类号： F16L15/00

CPC分类号： F16L15/00 ,  E21B17/042 ,  F16L15/001 ,  F16L15/06

摘要： 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 of the pin has an outward convex curved shape, and the sealing surface of the box has a tapered shape; and the cross-sectional area of the pin at a seal point that is a portion on the outer circumferential surface of the nose of the pin, the portion first coming into contact with the sealing surface of the box when threaded-joined, is 35% or more of the cross-sectional area of an original pipe portion corresponding to an unprocessed portion.

摘要翻译： 用于钢管的径向密封型螺纹接头在确保针销的刚性方面的密封性方面仍有改进的余地。 具体地说，销的鼻部的外周面呈向外凸的弯曲形状，盒的密封面呈锥形， 并且在作为销的鼻部的外周面上的部分的密封点处的销的横截面积，当螺纹接合时，首先与盒的密封表面接触的部分为35％ 或更多的对应于未处理部分的原始管部分的横截面积。

公开(公告)号：US20100024513A1

公开(公告)日：2010-02-04

申请号：US12519468

申请日：2007-12-06

申请人： Takamasa Kawai ,  Yukio Kimura

发明人： Takamasa Kawai ,  Yukio Kimura

IPC分类号： B21B1/00

CPC分类号： C21D1/26 ,  B21B1/22 ,  B21B1/227 ,  B21B3/00 ,  B21B27/005 ,  B21B2267/10 ,  C21D9/46

摘要： Temper rolling at a total elongation percentage of 0.1% or more is performed on a steel strip using a temper rolling mill in which at least one roll stand having high roughness work rolls, the center-line averaged roughness Ra of which being in the range of 3.0 to 10.0 μm, is provided, or at least one roll stand having bright rolls is further provided downstream of the above roll stand, and as a result, a predetermined elongation percentage, flatness, and center- line averaged roughness can be imparted even to a steel strip having a yield strength of 340 MPa or more at a rolling load approximately equivalent to that for a mild steel without using a large facility and complicated control. In particular, a high tensile-strength cold rolled steel sheet having an Ra of 0.5 to 3.0 μm and superior die galling resistance is obtained.

摘要翻译： 使用回火轧机在钢带上进行总伸长率为0.1％以上的回火轧制，其中至少一台具有高粗糙度工作辊的轧机机架的中心线平均粗糙度Ra在 或者在上述辊架的下游还设置有具有明亮辊的至少一个辊架，其结果是，即使赋予了预定的伸长率，平直度和中心线平均粗糙度， 在不使用大型设备和复杂控制的情况下，在低于中等钢的轧制载荷下的屈服强度为340MPa以上的钢带。 特别地，可以获得Ra为0.5〜3.0μm的高抗拉强度的冷轧钢板，并且可以获得优异的抗模具耐磨性。