Threaded joint for steel pipes
    1.
    发明授权
    Threaded joint for steel pipes 有权
    钢管螺纹接头

    公开(公告)号:US07360798B2

    公开(公告)日:2008-04-22

    申请号:US10765837

    申请日:2004-01-29

    Abstract: A threaded joint for steel pipes comprising a pin 1 and a box 2 each having a contact surface comprising a threaded portion 3 or 4 and an unthreaded metal contact portion 8 is provided with improved anti-galling propertied by forming a lubricating coating on the contact surface of at least one of the pin and the box, the lubricating coating exhibiting a self-repairing function by liquid lubrication and having a decreased greasiness. The lubricating coating is (1) a coating which comprises a lower lubricant layer which is in liquid form in the temperature range of above 0° C. and below 40° C. and an upper lubricant layer which is in solid form at 40° C., or (2) a coating which is semi-solid or solid at 40° C. and is formed of a mixture comprising a lubricating oil which is in liquid form in the temperature range of above 0° C. and below 40° C. and a wax which is in solid form at 40° C., the mixture preferably having been heated so as to liquefy the wax and dissolve in each other the wax and lubricant oil.

    Abstract translation: 一种用于钢管的螺纹接头,其包括销1和盒2,每个具有包括螺纹部分3或4的接触表面和无螺纹金属接触部分8的盒子2具有通过在接触表面上形成润滑涂层而具有改进的防磨损 的销和盒中的至少一个,润滑涂层通过液体润滑显示出自修复功能并且具有降低的油脂性。 润滑涂层是(1)涂层,其包括在0℃以上且低于40℃的温度范围内为液态的下润滑剂层,以及在40℃为固体形式的上润滑剂层 ,或(2)在40℃下为半固体或固体的涂层,并且由包含在0℃以上且低于40℃的温度范围内为液态的润滑油的混合物形成的涂层 和在40℃下为固体形式的蜡,所述混合物优选已被加热以使蜡液化并彼此溶解蜡和润滑油。

    Threaded joint for steel pipes
    2.
    发明授权
    Threaded joint for steel pipes 有权
    钢管螺纹接头

    公开(公告)号:US06659509B2

    公开(公告)日:2003-12-09

    申请号:US10361763

    申请日:2003-02-11

    Abstract: This invention relates to a threaded joint for steel pipes which comprises a pin and a box each having a contact surface including a threaded portion and an unthreaded metal contact portion and which guarantees galling resistance and gas tightness in a stable manner without application of a compound grease. A solid lubricating coating comprising a lubricating powder (e.g., molybdenum disulfide) and an organic or inorganic binder is formed on the contact surface of at least one of the pin and the box. The proportion of area of a cross section along the thickness of the solid lubricating coating which is occupied by secondary particles of the lubricating powder having an equivalent circular diameter of 15-60 &mgr;m is from 5-90%. Alternatively, the solid lubricating coating comprises, in addition to the lubricating powder, a fibrous filler (e.g., inorganic whiskers) in such an amount that the mass ratio of the fibrous filler to the binder is 0.01-0.5. As a result, galling resistance is improved, particularly at high temperatures.

    Abstract translation: 本发明涉及一种用于钢管的螺纹接头,其包括销和箱,每个销和盒均具有包括螺纹部分和无螺纹金属接触部分的接触表面,并且以不稳定的方式保证耐刮擦性和气密性,而不施加复合润滑脂 。 在销和盒中的至少一个的接触表面上形成包含润滑粉末(例如二硫化钼)和有机或无机粘合剂的固体润滑涂层。 沿着固体润滑涂层的厚度的面积的比例,该固体润滑涂层占据具有等同圆直径为15-60μm的润滑粉末的二次颗粒占5-90%。 或者,固体润滑涂层除了润滑粉末之外还包含纤维填料(例如无机晶须),其量使得纤维填料与粘合剂的质量比为0.01-0.5。 结果,耐擦伤性得到改善,特别是在高温下。

    Threaded joint for steel pipes having improved galling resistance and rust-preventing properties
    3.
    发明授权
    Threaded joint for steel pipes having improved galling resistance and rust-preventing properties 有权
    钢管螺纹接头具有改善的耐磨损性和防锈性能

    公开(公告)号:US06746057B2

    公开(公告)日:2004-06-08

    申请号:US10253421

    申请日:2002-09-25

    Abstract: In a threaded joint for steel pipes comprising a pin and a box capable of mating with each other, the pin having an externally threaded portion and an unthreaded metal contact portion as a mating surface, and the box having an internally threaded portion and an unthreaded metal contact portion as a mating surface, the mating surface of at least one of the pin and the box is coated with a lower porous zinc or zinc alloy layer by blast plating and with an upper coating which is either a solid lubricating coating (comprising a lubricating powder in an organic or in organic binder) or a liquid, heavy metal powder-free coating (e.g., a liquid coating based on a highly basic organic acid metal salt such as a highly basic metal sulfonate). The threaded joint exhibits improved galling resistance, rust-preventing properties, and gas tightness even after exposure to a high temperature and makes it possible to perform repeated fastening (make-up) and loosening (break-out) in a high-temperature oil well without application of a compound grease containing a heavy metal powder.

    Abstract translation: 在一种用于钢管的螺纹接头中,该螺纹接头用于包括能够彼此配合的销和箱体,该销具有外螺纹部分和无螺纹金属接触部分作为配合表面,并且该箱具有内螺纹部分和无螺纹金属 接触部分作为配合表面,销和箱中的至少一个的配合表面通过喷镀被涂覆有下多孔锌或锌合金层,并且具有上涂层,其为固体润滑涂层(包括润滑剂 有机或有机粘合剂中的粉末)或液体,重金属粉末涂料(例如基于高碱性有机酸金属盐如高碱性金属磺酸盐的液体涂料)。 螺纹接头即使在高温下暴露后也具有改善的耐磨损性,防锈性和气密性,并且可以在高温油井中进行重复的紧固(补充)和松动(脱落) 而不应用含有重金属粉末的复合润滑脂。

    Photocurable composition suitable for rust prevention of a threaded joint for steel pipes
    4.
    发明授权
    Photocurable composition suitable for rust prevention of a threaded joint for steel pipes 有权
    适用于钢管螺纹接头的防锈组合物

    公开(公告)号:US08586644B2

    公开(公告)日:2013-11-19

    申请号:US13295132

    申请日:2011-11-14

    Abstract: A thin and highly transparent coating having excellent air tightness, adhesion to a substrate, lubricating properties, galling resistance, and corrosion resistance is formed on the surface of a metal substrate and particularly on the surface of a threaded joint which is used for connection of oil country tubular goods. A photocurable composition comprising (A) a photocurable (meth)acrylate resin, (B) a (meth)acrylate monomer selected from a monofunctional (meth)acrylate monomer and a difunctional (meth)acrylate monomer, (C) a trifunctional or higher multifunctional (meth)acrylate monomer, (D) a photopolymerization initiator, (E) a benzotriazole anticorrosive agent, (F) an anticorrosive pigment selected from a phosphate anticorrosive pigment and calcium ion-exchanged silica, and (G) a phosphate ester is used to form a photocured coating.

    Abstract translation: 在金属基材的表面上,特别是在用于连接油的螺纹接头的表面上形成具有优异的气密性,对基材的粘附性,润滑性,耐磨损性和耐腐蚀性的薄且高度透明的涂层 国家管状物品。 一种可光固化组合物,其包含(A)光固化性(甲基)丙烯酸酯树脂,(B)选自单官能(甲基)丙烯酸酯单体和双官能(甲基)丙烯酸酯单体的(甲基)丙烯酸酯单体,(C)三官能以上多官能 (甲基)丙烯酸酯单体,(D)光聚合引发剂,(E)苯并三唑防腐剂,(F)选自磷酸盐防腐颜料和钙离子交换二氧化硅的防腐颜料和(G)磷酸酯 形成光固化涂层。

    Chemical conversion treatment liquid
    6.
    发明授权
    Chemical conversion treatment liquid 有权
    化学转化处理液

    公开(公告)号:US08333847B2

    公开(公告)日:2012-12-18

    申请号:US13039656

    申请日:2011-03-03

    Abstract: A chemical conversion treatment liquid which can stably form a phosphate-type chemical conversion film on a steel material for a joint portion of an oil well steel pipe containing 0.5-13% Cr is developed.Using a chemical conversion treatment liquid to which a prescribed amount of potassium is added, a chemical conversion film containing a prescribed amount of potassium compounds and having a prescribed thickness can be formed on the threaded surface of a joint portion of an oil well steel pipe.

    Abstract translation: 开发了可以在含有0.5-13%Cr的油井钢管的接头部分的钢材上稳定地形成磷酸酯型化学转化膜的化学转化处理液。 使用含有规定量的钾的化学转化处理液,能够在油井钢管的接合部的螺纹面上形成含有规定量的钾化合物并具有规定厚度的化学转化膜。

    Pickup arm with servo-controlled stylus
    9.
    发明授权
    Pickup arm with servo-controlled stylus 失效
    带伺服控制手写笔的拾音臂

    公开(公告)号:US4413334A

    公开(公告)日:1983-11-01

    申请号:US259486

    申请日:1981-05-01

    Applicant: Kunio Goto

    Inventor: Kunio Goto

    CPC classification number: G11B21/20

    Abstract: A capacitance detection type stylus is attached to the free end of a cantilever which is supported on a vertically movable resilient pivot. A permanent magnet is fixed to the movable pivot. A servo-control coil is provided adjacent the permanent magnet to move it in response to angular displacement of the cantilever from a predetermined position. The pivot is moved in the direction of fluctuation of a disc record to maintain the stylus in a proper orientation with respect to the record surface.

    Abstract translation: 电容检测型触针安装在支撑在可垂直移动的弹性枢轴上的悬臂的自由端上。 永磁体固定在可动枢轴上。 伺服控制线圈设置在永磁体附近,以响应悬臂从预定位置的角位移而移动。 枢轴沿盘记录的波动方向移动,以将触针保持在相对于记录表面的正确取向。

    Signal pickup cartridge for reproducing signals recorded on rotating
recording mediums
    10.
    发明授权
    Signal pickup cartridge for reproducing signals recorded on rotating recording mediums 失效
    用于再现记录在旋转记录介质上的信号的信号拾取盒

    公开(公告)号:US4339812A

    公开(公告)日:1982-07-13

    申请号:US136741

    申请日:1980-04-02

    Applicant: Kunio Goto

    Inventor: Kunio Goto

    CPC classification number: G11B3/54 G11B9/075

    Abstract: A signal pickup cartridge is mounted in a signal pickup device having pivot bearings and an actuator driven by the pivot bearings in response to a control signal. The pickup cartridge comprising a cantilever provided at a distal free end thereof with a reproducing stylus for tracing along a track which is formed on a rotary recording medium lying in a horizontal plane and has an information signal recorded therealong and thereby reproducing the information signal. The cantilever is supported at a proximal base end thereof by the pivot bearings in a swingable manner and, moreover, in a manner making possible displacement thereof in the longitudinal direction thereof. The pickup cartridge further comprises pressure contact mechanism for holding the cantilever when the pickup cartridge is in the state thereof prior to the mounting thereof in the signal pickup device and for causing the proximal base end of the cantilever to be pressed into contact with the pivot bearing when the pickup cartridge is in the mounted state in the pickup device, and elastic members capable of absorbing vibration provided at one part of the pressure contact mechanism and holding the cantilever at a part thereof near the proximal base end.

    Abstract translation: 信号拾取盒安装在具有枢转轴承的信号拾取装置中,以及响应于控制信号由枢转轴承驱动的致动器。 拾取盒包括悬臂,其在其远端自由端处设置有用于沿着形成在位于水平平面中的旋转记录介质上并且具有记录在其中的信息信号的轨道跟踪的再现触针,从而再现信息信号。 悬臂通过枢转轴承以可摆动的方式支撑在其近端基端,并且还以使其在其纵向方向上的可能位移的方式被支撑。 拾取盒还包括用于在拾取盒处于其安装在信号拾取装置中的状态下用于保持悬臂的压力接触机构,并且使得悬臂的近端基端被压靠与枢转轴承 当拾取盒处于拾取装置中的安装状态时,以及能够吸收设置在压力接触机构的一部分处的振动并且将悬臂保持在其近端基端附近的部分的弹性构件。

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