公开(公告)号：US09470345B2

公开(公告)日：2016-10-18

申请号：US14351976

申请日：2012-10-16

申请人： JFE Steel Corporation

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

IPC分类号： F16L25/00 ,  F16L15/00 ,  E21B17/042 ,  C10M171/00 ,  C10M103/04

CPC分类号： F16L15/004 ,  C10M103/04 ,  C10M171/00 ,  C10M2201/053 ,  C10N2210/01 ,  C10N2210/04 ,  C10N2210/06 ,  C10N2230/06 ,  E21B17/042

摘要： 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 δ/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 δ 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.

摘要翻译： 在用于管道的螺纹接头中，维氏硬度大于或等于310的涂层形成在箱的螺纹部分和对应于密封部分的箱的内表面上。 密封部在管圆周方向上的密封干涉量比δ/ D大于或等于0.002，其中D是在作为外部的点处的密封点处的销的外径的密封直径 外周面首先与盒子的鼻部的内周面接触的销的鼻部的外周面，δ是限定为密封点处的外径减少的量的干涉量 通过盒子当销和盒子彼此螺纹连接时。

公开(公告)号：US20150061287A1

公开(公告)日：2015-03-05

申请号：US14351976

申请日：2012-10-16

申请人： JFE Steel Corporation

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

IPC分类号： F16L15/00 ,  E21B17/042

CPC分类号： F16L15/004 ,  C10M103/04 ,  C10M171/00 ,  C10M2201/053 ,  C10N2210/01 ,  C10N2210/04 ,  C10N2210/06 ,  C10N2230/06 ,  E21B17/042

摘要： 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 δ/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 δ 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.

摘要翻译： 在用于管道的螺纹接头中，维氏硬度大于或等于310的涂层形成在箱的螺纹部分和对应于密封部分的箱的内表面上。 密封部在管圆周方向上的密封干涉量比δ/ D大于或等于0.002，其中D是在作为外部的点处的密封点处的销的外径的密封直径 外周面首先与盒子的鼻部的内周面接触的销的鼻部的外周面，δ是限定为密封点处的外径减少的量的干涉量 通过盒子当销和盒子彼此螺纹连接时。