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    STEEL PIPE JOINT HAVING HIGH GALLING RESISTANCE AND SURFACE TREATMENT METHOD THEREOF
    51.
    发明公开
    STEEL PIPE JOINT HAVING HIGH GALLING RESISTANCE AND SURFACE TREATMENT METHOD THEREOF 失效
    具有增强的抗磨损性钢管耦合及表面处理方法

    公开(公告)号：EP0786616A4

    公开(公告)日：1998-05-27

    申请号：EP95933616

    申请日：1995-10-04

    申请人： NIPPON STEEL CORP

    发明人： TSURU EIJI ,  OKA MASAHARU ,  NAGAYOSHI HARUYUKI ,  NAKASHIMA AKIRA ,  HIGUTI SEIJUN ,  INOUE RYUSUKE ,  AKIYAMA TOSHIO ,  SAGARA KAZUMI

    IPC分类号： C23C22/18 ,  C23C22/83 ,  E21B17/042 ,  F16L15/00 ,  F16L15/06 ,  F16L57/06 ,  F16L58/18 ,  B05D7/14 ,  B32B15/08

    CPC分类号： F16L15/001 ,  C23C22/18 ,  C23C22/83 ,  E21B17/042 ,  F16L15/00 ,  F16L57/06 ,  F16L58/182 ,  Y10T29/49885

    摘要： A screw joint of an oil-well pipe having a high seizure resistance. The threaded portion and metal seal portion of the pipe has a manganese phosphate chemical conversion treatment coating layer of 5 to 30 mu m thickness or a double-layer of a nitrogen treatment coating layer of 1 to 20 mu m thickness and a manganese phosphate chemical conversion treatment coating layer of 5 to 30 mu m thickness. The portions have also a solid lubricant coating layer of 10 to 45 mu m thickness formed by coating the portions with a solid lubricant having a specific composition and containing molybdenum disulfide powder or tungsten disulfide powder and at least one component selected from an epoxy resin, a furan resin and a polyamide-imide resin as the essential components and by subjecting them to a heat treatment. Due to such surface treatments, a steel pipe joint at which galling does not occur for a long time even when the number of repeated uses of the steel pipe is large can be obtained.

    摘要翻译： 具有高耐发热胶着性的油井管的螺纹接头。 管的螺纹部和金属密封部具有5至30微米的厚度或1至20微米厚的氮化处理涂层和磷酸锰系化学转化的双层的磷酸锰系化学转化处理覆膜层 5至30微米厚度的治疗涂层。 部分具有因此通过涂覆部分与固体润滑剂具有特定组成和在环氧树脂含有选自二硫化钼粉末或二硫化钨粉末和至少一种组分，形成10〜45微米厚的固体润滑覆膜层 呋喃树脂和聚酰胺 - 酰亚胺树脂作为主要组分，并通过对它们进行热处理。 由于追求表面处理，在该磨损钢管接头不会发生的，即使钢管的反复使用的数量大可以得到很长的时间。

    Hermetic metal pipe joint
    52.
    发明公开
    Hermetic metal pipe joint 失效
    Hermetische Metallrohrverbindung。

    公开(公告)号：EP0364413A1

    公开(公告)日：1990-04-18

    申请号：EP89830425.8

    申请日：1989-09-29

    申请人： DALMINE S.p.A.

    发明人： Cappelli, Cataldo ,  Morlotti, Norberto

    IPC分类号： F16L15/06 ,  E21B17/042

    CPC分类号： F16L15/004 ,  E21B17/042

    摘要： Pipe joint for pumping endogenous fluids and for well casings, with tapered thread, complete with a male (1) and a female element (2), characterized by a specific combination of surfaces ensuring a hermetic metal seal by the interaction between two surfaces, one on the male element and one on the female, having a tapered shape the taper being between 6.25 and 9.25%, the surface (4) of the male element which comes into contact with the corresponding female element (9) having a lengthwise extension of between 0.5 and 2.5 mm. Said seal is advantageously combined with two seat surfaces (5, 10), one on the male element and the other on the female, both being tapered, the angle made by the generatrix with a plane perpendicular to the joint axis being between 5 and 10°, said surfaces coming into contact only after interaction and energization of the threads and the seal surfaces.

    摘要翻译： 用于泵送内源性流体和井套管的管接头，具有锥形螺纹，具有阳（1）和阴元件（2），其特征在于通过两个表面之间的相互作用确保密封金属密封的表面的特定组合，一 在阳元件上，一个在阴头上，具有渐缩形状，锥度在6.25和9.25％之间，阳元件的与相应的阴元件（9）接触的表面（4）之间的纵向延伸在 0.5和2.5毫米。 所述密封件有利地与两个座表面（5,10）组合，一个在阳元件上，另一个在阴部上，两个都是锥形的，母线与垂直于接头轴线的平面形成的角度在5和10之间 DEG，所述表面仅在螺纹和密封表面的相互作用和通电之后才接触。

    PIPE JOINT.
    53.
    发明公开
    PIPE JOINT. 失效
    连接器管道。

    公开(公告)号：EP0173691A4

    公开(公告)日：1986-07-08

    申请号：EP85900424

    申请日：1984-12-12

    申请人： RAULINS GEORGE M ,  GRIMMER GEORGE G ,  PETERSON JAMES LEE

    发明人： RAULINS GEORGE M

    IPC分类号： E21B17/042 ,  F16L15/00 ,  F16L15/04 ,  F16L15/06 ,  F16L19/00 ,  F16L25/00

    CPC分类号： F16L15/004 ,  E21B17/042 ,  F16L15/003 ,  F16L15/04

    摘要： A pipe joint in which a metal-to-metal seal (13, 18) is provided on the exterior of the pipe, a torque shoulder provides a further metal-to-metal seal (14, 19) and a still further seal is provided by a resilient ring (22). The box is protected against ballooning which might result in jump out of the threads by proportioning the thickness of the box at the point of seal at the maximum diameter of seal (tb) to the outer diameter of the box (Db) as compared to the full wall thickness of the pipe (tp) related to the outer diameter of the pipe (Dp).