Process for coating metal tubes with plastic materials
    5.
    发明授权
    Process for coating metal tubes with plastic materials 失效
    用塑料材料涂覆金属管的工艺

    公开(公告)号:US4273798A

    公开(公告)日:1981-06-16

    申请号:US53654

    申请日:1979-06-29

    Inventor: Werner Scheiber

    Abstract: A process for applying a coating of plastic material to a metal tube of finite length having a pretreated surface by applying plastic coating materials on the metal tube in a direction horizontal and perpendicular to its direction of travel, the process being characterized by the following sequence of steps:(a) heating a fixed metal tube to a temperature above the melting point of the plastic material to be employed;(b) causing a mixture of plastic powder and air to pass through the metal tube whereby the plastic material is fritted onto the inside surface of the tube;(c) thereafter rotating the metal tube and applying to the exterior surface thereof in a plurality of stages a plastic material, said plastic material being electrostatically sprayed onto the rotating metal tube; and(d) after each stage of electrostatically applying plastic to the outside surface of the metal tube and applying plastic material to the inside surface thereof, completely melting and smoothing the plastic material. An apparatus for carrying out the process is also disclosed.

    Abstract translation: 一种通过在垂直于其行进方向的方向上在金属管上施加塑料涂层材料将塑料材料涂层施加到具有预处理表面的金属管的方法,该方法的特征在于以下顺序 步骤:(a)将固定的金属管加热至高于要使用的塑料材料的熔点的温度; (b)使塑料粉末和空气的混合物通过金属管,由此将塑料材料烧结在管的内表面上; (c)此后旋转金属管并在多个阶段向其外表面施加塑料材料,所述塑料材料被静电喷涂到转动的金属管上; 和(d)在将塑料静电涂覆到金属管的外表面并将塑料材料施加到其内表面的每个阶段之后,完全熔化和平滑塑料材料。 还公开了一种用于执行该过程的装置。

    METALLIC ALLOY COATING SYSTEM AND METHOD
    7.
    发明申请
    METALLIC ALLOY COATING SYSTEM AND METHOD 有权
    金属合金涂层系统及方法

    公开(公告)号:US20160333480A1

    公开(公告)日:2016-11-17

    申请号:US15154691

    申请日:2016-05-13

    Abstract: Tubulars are immersed in electroless nickel coating solution to coat the tubulars. Prior to the coating step the tubulars are blasted with a clean medium and washed and rinsed in alkaline solution. The tubulars are arranged in a bunk for washing, rinsing and coating. LLDPE stretch wrap applied to outer portions of the tubulars prevents coating of the outer portions. The tubulars are electrically separated from the bunk and the coating solution tank, and the tank is provided with anodic protection to prevent coating of the tank. The bunk is provided with a header assembly to provide solution flow through the tubulars via nozzles on the header assembly in addition to flow caused by the vortex effect created by velocity of fluid exiting the nozzles. The bunk is arranged in the solution tank so that the tubulars are at an angle to horizontal to efficiently remove hydrogen gas. Solution flow to the header assembly is filtered to remove particulates.

    Abstract translation: 将管状物浸入无电镀镍溶液中以涂覆管状物。 在涂布步骤之前,用干净的介质喷射管,并在碱性溶液中洗涤和漂洗。 管子被布置在用于洗涤,漂洗和涂覆的床上。 应用于管状物的外部的LLDPE拉伸包装防止外部部分的涂覆。 管子与铺层和涂层溶液箱电分离,并且该罐具有阳极保护以防止罐的涂覆。 该床铺设置有头部组件,除了由离开喷嘴的流体的速度产生的涡流效应引起的流动之外,还通过头部组件上的喷嘴提供通过管状物的溶液流。 这些铺位被布置在溶液罐中,使得管状物与水平方向成角度,以有效地除去氢气。 过滤到头部组件的溶液流,以去除颗粒物。

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