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    Lead-free water barrier
    2.
    发明申请
    Lead-free water barrier 有权

    公开(公告)号：US20220189659A1

    公开(公告)日：2022-06-16

    申请号：US17547358

    申请日：2021-12-10

    Applicant: NEXANS

    Inventor： Massimiliano MAURI ,  Simon JORGENSEN ,  Knut Magne FURUHEIM ,  Bettina GRORUD ,  Markus JARVID ,  Audun JOHANSON

    IPC: H01B7/282 ,  H01B7/14

    Abstract: A lead-free water barrier suited for dynamical submarine high voltage power cables has a water barrier including a laminate structure. The laminate structure has a metal foil having a lower and an upper surface area. A first layer of a thermoplastic semiconducting polymer is laid onto the first adhesive layer, and a second layer of a thermoplastic semiconducting polymer is laid onto the second adhesive layer. The laminate structure is thermally joined by a heat treatment.

    Reinforced water barrier over a joint
    4.
    发明申请
    Reinforced water barrier over a joint 有权

    公开(公告)号：US20230139062A1

    公开(公告)日：2023-05-04

    申请号：US17521468

    申请日：2021-11-08

    Applicant: NEXANS

    Inventor： Massimiliano MAURI ,  Simon JORGENSEN ,  Pal GRONBERG BRAEKKE

    IPC: H01B7/282 ,  H02G15/184

    Abstract: A reinforced water barrier over a joint between power cables is suited for subsea cables having different water barrier/sheathing designs. The reinforced water barrier comprises an intermediate water barrier made of lead or a lead alloy which stretches over the joint and is attached to the underlaying water barriers of the joined cables, and which is reinforced by being coated with a layer of polyethylene based adhesive followed by a layer of polymeric outer sheathing. The adhesive layer and the layer of polymeric outer sheathing are thermally set by a heat treatment.

    Laminate water barrier
    6.
    发明申请
    Laminate water barrier 有权

    公开(公告)号：US20220254548A1

    公开(公告)日：2022-08-11

    申请号：US17555775

    申请日：2021-12-20

    Applicant: NEXANS

    Inventor： Markus JARVID ,  Simon JORGENSEN

    IPC: H01B7/282 ,  B32B15/08 ,  B32B7/12 ,  B32B27/20 ,  C08L67/02 ,  C08L23/06 ,  H01B7/18

    Abstract: The present invention relates to a laminate water barrier which is capable of conducting capacitive currents radially out of the cable thus avoiding breakdown due to induced voltage gradients, comprising a laminate structure comprising a metal foil having a lower and an upper surface area, a first layer of a thermoplastic polymer laid onto and covering the lower surface of the layer of metal foil except for a longitudinal uncovered surface area of the layer of metal foil, and a second layer of thermo-plastic polymer laid onto and covering the upper surface of the layer of metal foil except for a longitudinal uncovered surface area of the layer of metal foil, and wherein the laminate structure is wrapped around the cable core such that the first uncovered surface area of the metal foil faces the cable core and the second uncovered surface area of the metal foil faces away from the laminate structure, and the laminate structure is thermally joined by a heat treatment.

    High strength tube joining by rotary friction welding
    8.
    发明公开
    High strength tube joining by rotary friction welding 审中-公开

    公开(公告)号：US20240116128A1

    公开(公告)日：2024-04-11

    申请号：US18220817

    申请日：2023-07-11

    Applicant: NEXANS

    Inventor： Audun JOHANSON ,  Simon JORGENSEN ,  Robin SANGAR ,  Jonas LARSSON

    IPC: B23K20/12 ,  B23K20/22 ,  B23K101/06 ,  B23K103/12

    CPC classification number: B23K20/12 ,  B23K20/22 ,  B23K2101/06 ,  B23K2103/12

    Abstract: A method of joining tubes with friction welding includes the steps of aligning end walls of tubes to be welded, introducing an intermediate tube segment between the tubes, and bringing the tube end walls together against opposing end walls of the tube segment to put the end walls under axial compressive stress at a friction ramp-up pressure. The method further includes rotating the intermediate tube segment about a tube segment longitudinal axis in at least one direction, increasing the axial compressive friction stress to a forging pressure in order to heat the end parts of the tube and the intermediate tube segment, and increasing the axial compressive friction stress to a forging pressure, thus joining the tubes and the tube segment. The tube segments have a tube wall made of a material resistant to hydrogen embrittlement.

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