THREADED JOINT FOR STEEL PIPES
    34.
    发明申请
    THREADED JOINT FOR STEEL PIPES 有权
    螺纹管接头钢管

    公开(公告)号:US20030160446A1

    公开(公告)日:2003-08-28

    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 nullm 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。

    Hybrid series transition metal polymer composite sets
    40.
    发明授权
    Hybrid series transition metal polymer composite sets 失效
    混合系列过渡金属聚合物复合组合

    公开(公告)号:US5565417A

    公开(公告)日:1996-10-15

    申请号:US494383

    申请日:1995-06-26

    Abstract: The present invention provides a specific hybrid series of transition metal polymer matrix composite sets which create durable friction reducing, wear, and corrosion resistance characteristics which can be used in a powder or liquid form, or, which can be bonded to a desired surface at ambient temperature. The specific components are combinations of polytetrafluoroethylene and molybdenum disulfide, polytetrafluoroethylene and tungsten disulfide, or tungsten disulfide and molybdenum disulfide. This invention brings together the unique properties of organic chemistry (polytetrafluoroethylene) and inorganic chemistry (tungsten disulfide, or molybdenum disulfide). This invention creates a synergistic interaction which enhances the wear resistance properties of polytetrafluoroethylene while simultaneously improving the friction reducing properties of molybdenum disulfide, or tungsten disulfide. The material functionality of this invention is greatly improved over the individual friction-reducing and wear-resistance capabilities of its constituent components being use independently. The invention comprises varying mixture sets of polytetrafluoroethylene and molybdenum disulfide, polytetrafluoroethylene and tungsten disulfide, or molybdenum disulfide and tungsten disulfide, depending upon the desired friction and wear-resistance needed. This invention can be introduced into the lubrication of mechanical components in powder form, in a colloidal dispersion, or, can be applied and caused to bond directly to a substrate surface through a variety of mechanisms and manners to form a lubricious and wear-resistant layer ranging from 0.5 microns to 60 microns thick.

    Abstract translation: 本发明提供了一种特定的混合系列的过渡金属聚合物基质复合组合物,它们产生可以以粉末或液体形式使用的耐摩擦降低,耐磨性和耐腐蚀性,或者可以在环境中结合到所需表面 温度。 具体组分是聚四氟乙烯和二硫化钼,聚四氟乙烯和二硫化钨,或二硫化钨和二硫化钼的组合。 本发明汇集了有机化学(聚四氟乙烯)和无机化学(二硫化钨或二硫化钼)的独特性质。 本发明产生增强聚四氟乙烯耐磨性能的协同相互作用,同时提高二硫化钼或二硫化钨的摩擦降低性能。 本发明的材料功能比独立使用的其组成部件的单独的减少摩擦和耐磨性能大大改进。 本发明包括根据需要的所需摩擦和耐磨性,改变聚四氟乙烯和二硫化钼,聚四氟乙烯和二硫化钨,或二硫化钼和二硫化钨的混合物组。 本发明可以引入到粉末形式的机械组分的润滑中,在胶体分散体中,或者可以通过各种机理和方式直接粘合到基材表面上以形成光滑和耐磨层 范围从0.5微米到60微米厚。

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