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    Threaded joint for steel pipes and process for the surface treatment thereof
    151.
    发明申请
    Threaded joint for steel pipes and process for the surface treatment thereof 审中-公开
    钢管螺纹接头及其表面处理工艺

    公开(公告)号：US20040195826A1

    公开(公告)日：2004-10-07

    申请号：US10829292

    申请日：2004-04-22

    Inventor： Kunio Goto

    IPC: F16L055/00

    CPC classification number: E21B17/042 ,  C10M111/04 ,  C10M177/00 ,  C10M2201/0413 ,  C10M2201/0613 ,  C10M2201/0623 ,  C10M2201/0653 ,  C10M2201/0663 ,  C10M2201/0803 ,  C10M2201/084 ,  C10M2209/1003 ,  C10M2209/1013 ,  C10M2217/0443 ,  C10N2230/06 ,  C10N2240/22 ,  C10N2250/08 ,  C10N2250/121 ,  C10N2270/00 ,  C10N2280/00 ,  C23C24/08 ,  F16L15/00 ,  F16L15/001 ,  F16L15/004 ,  F16L58/182 ,  Y10T428/139 ,  Y10T428/1393 ,  Y10T428/31529 ,  Y10T428/31678

    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 can be prevented from galling during repeated fastening and loosening without application of a compound grease. A solid lubricant coating which comprises a lubricating powder such as molybdenum disulfide and a resin binder is formed on the contact surface of at least one of the pin and the box. The coating is formed by applying a coating fluid and drying the applied coating by first stage heating in the temperature range of from 70null C. to 150null C. and second stage heating in the range of from higher than 150null C. to 380null C. The resulting solid lubricant coating has a hardness of 70-140 on the Rockwell M scale and an adhesive strength of at least 500 N/m as determined by the SAICAS (Surface And Interfacial Cutting Analysis System) method, and it exhibits excellent galling resistance even in the environment of high-temperature oil wells. Inclusion of ultraviolet screening fine particles such as titanium oxide fine particles in the solid lubricant coating increases the rust preventing properties of the threaded joint.

    Abstract translation: 本发明涉及一种用于钢管的螺纹接头，其包括销和箱体，每个销和箱都具有包括螺纹部分和无螺纹金属接触部分的接触表面，并且可以防止在反复紧固和松动期间不产生磨损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如二硫化钼和树脂粘合剂的固体润滑剂涂层。 通过施加涂布液并通过在70℃至150℃的温度范围内的第一阶段加热来干燥所涂覆的涂层并且在高于150℃至380℃的范围内进行第二阶段加热来形成涂层 ℃。所得固体润滑剂涂层在洛氏硬度计上具有70-140的硬度，并且通过SAICAS（表面和界面切割分析系统）方法确定的至少500N / m的粘合强度，并且显示出优异的 即使在高温油井的环境中也具有耐磨性。 在固体润滑剂涂层中包含紫外线屏蔽细颗粒如氧化钛微粒增加螺纹接头的防锈性能。

    Threaded joint for steel pipes
    153.
    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

    Applicant: Kunio Goto ,  Keishi Matsumoto ,  Kazuyuki Nakasuji ,  Toshiro Anraku ,  Shigeo Nagasaku

    Inventor： Kunio Goto ,  Keishi Matsumoto ,  Kazuyuki Nakasuji ,  Toshiro Anraku ,  Shigeo Nagasaku

    IPC: F16L1504

    CPC classification number: C23C28/00 ,  C10M103/02 ,  C10M103/04 ,  C10M103/06 ,  C10M107/38 ,  C10M2201/0413 ,  C10M2201/053 ,  C10M2201/0613 ,  C10M2201/0653 ,  C10M2201/0663 ,  C10M2213/0623 ,  C10N2220/082 ,  C10N2250/121 ,  C10N2250/14 ,  C23C24/08 ,  C23C26/00 ,  C23C28/321 ,  C23C28/3225 ,  C23C28/345 ,  C23C30/00 ,  E21B17/042 ,  F16L15/001 ,  F16L15/004 ,  F16L58/1027 ,  F16L58/182

    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。

    Low wear and low friction coatings for articles made of low softening point materials
    154.
    发明申请
    Low wear and low friction coatings for articles made of low softening point materials 有权
    低软化点材料制成的低磨损和低摩擦涂层

    公开(公告)号：US20030186060A1

    公开(公告)日：2003-10-02

    申请号：US10063238

    申请日：2002-04-02

    Applicant: Ford Motor Company

    Inventor： V. Durga Nageswar Rao

    IPC: B32B027/38

    CPC classification number: C10M111/04 ,  C09D5/00 ,  C09D163/00 ,  C10M2201/0413 ,  C10M2201/0613 ,  C10M2201/0663 ,  C10M2201/1006 ,  C10M2209/043 ,  C10M2209/1013 ,  C10M2209/1023 ,  C10M2217/0425 ,  C10M2217/0453 ,  C10N2230/06 ,  C10N2250/121 ,  C10N2250/18 ,  Y10T428/31511 ,  Y10T428/31938 ,  C08L2666/04 ,  C08L2666/54

    Abstract: The present invention relates to an anti-friction and anti-wear liquid coating composition for use with parts made of materials that have softening points below about 300null F. and articles so coated. The present invention also relates to a method of coating parts made from a low softening point materials with an anti-friction and anti-wear hard coating composition. The coating composition comprises a mixture of (i) solid lubricants comprising boron nitride, graphite and molybdenum disulfide, (ii) a thermoset resin system, (iii) catalyst for curing the resin system and (iv) a solvent system comprising highly volatile solvents. The coating composition is applied to the part and cured to form a coating on the part.

    Abstract translation: 本发明涉及一种用于与软化点低于约300°F的材料制成的部件和如此涂覆的制品的抗摩擦和抗磨损液体涂料组合物。 本发明还涉及一种用低摩擦和耐磨硬涂层组合物涂覆由低软化点材料制成的零件的方法。 涂料组合物包含（i）包含氮化硼，石墨和二硫化钼的固体润滑剂的混合物，（ii）热固性树脂体系，（iii）用于固化树脂体系的催化剂和（iv）包含高挥发性溶剂的溶剂体系。 将涂料组合物施加到部件上并固化以在部件上形成涂层。

    LUBRICANT COMPOSITIONS AND METHODS
    156.
    发明申请
    LUBRICANT COMPOSITIONS AND METHODS 无效
    润滑剂组合物和方法

    公开(公告)号：US20020198114A1

    公开(公告)日：2002-12-26

    申请号：US08943125

    申请日：1997-10-03

    Applicant: LEE COUNTY MOSQUITO CONTROL DISTRICT

    Inventor： Mr. Richard Levy

    IPC: C10M101/00

    CPC classification number: C10M111/04 ,  C10M2201/0413 ,  C10M2201/053 ,  C10M2201/0623 ,  C10M2201/0653 ,  C10M2201/0663 ,  C10M2201/0853 ,  C10M2201/0873 ,  C10M2201/1023 ,  C10M2201/1033 ,  C10M2203/1006 ,  C10M2207/2825 ,  C10M2209/0845 ,  C10M2209/1045 ,  C10M2209/123 ,  C10M2217/0245 ,  C10M2217/0265 ,  C10N2230/06 ,  C10N2250/08 ,  C10N2250/10 ,  C10N2250/12 ,  C10N2250/16 ,  C10N2250/18 ,  C10M2209/1085

    Abstract: Abstract of DisclosureA lubricant composition is disclosed comprising a superabsorbent polymer combined with a material for decreasing friction between moving surfaces. The superabsorbent polymer absorbs from about 25 to greater than 100 times its weight in water and may comprise a polymer of acrylic acid, an acrylic ester, acrylonitrile or acrylamide, including co-polymers thereof or starch graft co-polymers thereof or mixtures thereof. In the composition, the material for decreasing friction comprises a petroleum lubricant containing an additive, water containing an additive, synthetic lubricant, grease, solid lubricant or metal working lubricant, wherein the synthetic lubricant, grease, solid lubricant or metal working lubricant optionally contain an additive. A method of lubricating a surface is also disclaosed comprising coating said surface with the lubricating composition comprising the superabsorbent polymer combined with a material for decreasing friction between moving surfaces, wherein the material for decreasing friction comprises a petroleum lubricant, water, synthetic lubricant, grease, solid lubricant or metal working lubricant, and optionally an additive.

    Abstract translation: 公开摘要公开了一种润滑剂组合物，其包含与用于减少运动表面之间的摩擦的材料组合的超吸收性聚合物。 超吸收性聚合物在水中吸收其重量的约25至大于100倍，并且可以包含丙烯酸，丙烯酸酯，丙烯腈或丙烯酰胺的聚合物，包括其共聚物或其淀粉接枝共聚物或其混合物。 在组合物中，用于减少摩擦的材料包括含有添加剂的石油润滑剂，含有添加剂的水，合成润滑剂，润滑脂，固体润滑剂或金属加工润滑剂，其中合成润滑剂，润滑脂，固体润滑剂或金属加工润滑剂任选地含有 添加剂。 润滑表面的方法也被包括在内，包括用包含超吸收性聚合物的润滑组合物涂覆所述表面，所述润滑组合物与用于减少运动表面之间的摩擦的材料组合，其中用于减少摩擦的材料包括石油润滑剂，水，合成润滑剂， 固体润滑剂或金属加工润滑剂，以及任选的添加剂。

    Method for fabricating a non-parallel magnetically biased multiple magnetoresistive (MR) layer magnetoresistive (MR) sensor element
    159.
    发明授权
    Method for fabricating a non-parallel magnetically biased multiple magnetoresistive (MR) layer magnetoresistive (MR) sensor element 失效

    公开(公告)号：US06295718B1

    公开(公告)日：2001-10-02

    申请号：US09374310

    申请日：1999-08-16

    Applicant: Min Li ,  Simon H. Liao

    Inventor： Min Li ,  Simon H. Liao

    IPC: G11B5127

    CPC classification number: B82Y25/00 ,  B82Y10/00 ,  B82Y40/00 ,  C10M103/02 ,  C10M103/04 ,  C10M103/06 ,  C10M111/00 ,  C10M125/00 ,  C10M125/22 ,  C10M2201/0413 ,  G01R33/093 ,  G11B5/3903 ,  G11B5/3954 ,  G11B5/3967 ,  G11B5/465 ,  G11B2005/0008 ,  G11B2005/3996 ,  H01F10/3263 ,  H01F10/3268 ,  H01F41/304 ,  H01L43/12 ,  Y10T29/49021 ,  Y10T29/49034 ,  Y10T29/49036 ,  Y10T29/49043

    Abstract: Within a method for forming a magnetoresistive (MR) sensor element there is first provided a substrate. There is then formed over the substrate a first magnetoresistive (MR) layer having formed contacting the first magnetoresistive (MR) layer a magnetically biased first magnetic bias layer biased in a first magnetic bias direction with a first magnetic bias field strength. There is also formed separated from the first magnetoresistive (MR) layer by a spacer layer a second magnetoresistive (MR) layer having formed contacting the second magnetoresistive (MR) layer a magnetically un-biased second magnetic bias layer. There is then biased through use of a first thermal annealing method employing a first thermal annealing temperature, a first thermal annealing exposure time and a first extrinsic magnetic bias field the magnetically un-biased second magnetic bias layer to form a magnetically biased second magnetic bias layer having a second magnetic bias field strength in a second magnetic bias direction non-parallel to the first magnetic bias direction while simultaneously partially demagnetizing the magnetically biased first magnetic bias layer to provide a partially demagnetized magnetically biased first magnetic bias layer having a partially demagnetized first magnetic bias field strength less than the first magnetic bias field strength. Finally, there is then annealed thermally through use of a second thermal annealing employing a second thermal annealing temperature and a second thermal annealing exposure time without a second magnetic bias field: (1) the partially demagnetized magnetically biased first magnetic bias layer to form a remagnetized partially demagnetized first magnetic bias layer having a remagnetized partially demagnetized first netic bias field strength greater than the partially demagnetized first magnetic bias field strength; and (2) the magnetically biased second magnetic bias layer to form a further magnetically biased second magnetic bias layer having a further magnetized second magnetic bias field strength greater than the second magnetic bias field strength.

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