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    Connection tube and its method of manufacturing
    46.
    发明授权
    Connection tube and its method of manufacturing 有权

    公开(公告)号：US11679428B2

    公开(公告)日：2023-06-20

    申请号：US16472238

    申请日：2017-12-22

    Applicant: SANDVIK INTELLECTUAL PROPERTY AB

    Inventor： Olle Eriksson ,  Henrik Häll

    IPC: B21C33/00 ,  B21C37/15 ,  B21D39/04 ,  F16L13/00 ,  F16L13/007

    CPC classification number: B21C33/004 ,  B21C37/154 ,  B21D39/04 ,  F16L13/007

    Abstract: A connection tube (1) for connecting two tubes (8, 9) of different alloys, wherein the connection tube has a central through-hole extending along a longitudinal axis and comprises a first end portion (2) of a first alloy, a second end portion (3) of a second alloy, and a middle portion (4) which is at least partly double-layered with said second alloy forming an annular inner layer and said first alloy forming an annular outer layer, wherein a metallic bond has been formed between said layers. The inner and outer layers are mechanically interlocked by means of at least one helically extending thread formed in an interface between said layers. The connection tube is manufactured from a base component and an outer component threaded onto the base component to form a work piece, which is hot worked to form a metallic bond.

    METHOD FOR PRODUCING A LARGE MULTILAYER PIPE
    47.
    发明申请
    METHOD FOR PRODUCING A LARGE MULTILAYER PIPE 审中-公开

    公开(公告)号：US20170113257A1

    公开(公告)日：2017-04-27

    申请号：US15317350

    申请日：2015-06-09

    Applicant: EISENBAU KRÄMER GMBH

    Inventor： Vitaliy Pavlyk ,  Thilo REICHEL ,  Ivan ARETOV

    IPC: B21C37/15 ,  B21D39/04

    CPC classification number: B21C37/154 ,  B21D39/04

    Abstract: A method for producing a multilayered large pipe out of an outer pipe which forms a supporting layer, and at least one inner pipe, which forms a lining layer and is bent from a lining sheet and welded along a longitudinal seam or is seamless, including the following sequence of method steps: preparing a wavy inner pipe which is bent from the lining sheet with a continuously rounded wavy contour extending transverse to a longitudinal axis of the large pipe and with wave troughs and wave crests extending continuously over a length of the wavy inner pipe where the maximum outer diameter of the wavy inner pipe is smaller than the inner diameter of the outer pipe; inserting the wavy inner pipe into the outer pipe; and expanding the wavy inner pipe by an expansion force acting in a radially outward direction until it assumes an almost round form and, after removal of the expansion force, is clamped in a nonpositive way in the outer pipe, and subsequent relaxation.

    Method of making lightweight heat pipe
    48.
    发明授权
    Method of making lightweight heat pipe 有权
    制造轻质热管的方法

    公开(公告)号：US09481056B2

    公开(公告)日：2016-11-01

    申请号：US14252694

    申请日：2014-04-14

    Applicant: CHAUN-CHOUNG TECHNOLOGY CORP.

    Inventor： Cheng-Tu Wang ,  Pang-Hung Liao

    IPC: B23P15/26 ,  F28D15/02 ,  F28D15/04 ,  B21C37/15 ,  B21C37/20 ,  B21D26/033 ,  B21D39/04 ,  B21D53/02

    CPC classification number: B23P15/26 ,  B21C37/154 ,  B21C37/202 ,  B21D26/033 ,  B21D39/04 ,  B21D53/02 ,  F28D15/0283 ,  F28D15/046 ,  Y10T29/49353

    Abstract: A method of making a lightweight heat pipe includes steps of: a) preparing a first hollow pipe and a second hollow pipe making of two different materials; b) disposing the first hollow pipe into the second hollow pipe along an axial direction of the second hollow pipe; c) making an inner wall surface of the second hollow pipe attached on an outer wall surface of the first hollow pipe to combine the first and the second hollow pipes as a pipe body of the heat pipe; and d) vacuuming an inner space of the first hollow pipe, and sealing the pipe body after working fluid is filled in the inner space of the first hollow pipe to finish the heat pipe.

    Abstract translation: 制造轻质热管的方法包括以下步骤：a）制备第一中空管和制造两种不同材料的第二中空管; b）沿着第二中空管的轴向将第一空心管设置在第二中空管中; c）使第二中空管的内壁表面安装在第一空心管的外壁表面上，以组合作为热管的管体的第一和第二空心管; 以及d）对所述第一中空管的内部空间进行抽真空，并且在将所述工作流体填充到所述第一中空管的内部空间中以密封所述管体以完成所述热管。

    PROCESS FOR PRODUCING A MULTILAYER PIPE BY EXPANSION AND MULTILAYER PIPE PRODUCED BY SAID PROCESS
    49.
    发明申请
    PROCESS FOR PRODUCING A MULTILAYER PIPE BY EXPANSION AND MULTILAYER PIPE PRODUCED BY SAID PROCESS 审中-公开
    通过扩展生产多层管道的方法和由制造过程生产的多层管

    公开(公告)号：US20160207086A1

    公开(公告)日：2016-07-21

    申请号：US14913885

    申请日：2014-07-23

    Applicant: VALLOUREC TUBOS DO BRASIL S.A.

    Inventor： Julio Marcio SILVEIRA E SILVA ,  Timo EBELING ,  Hezick DA SILVA PERDIGAO ,  Danielle GRANHA GIORGINI ,  Gustavo ALVES PINHEIRO ,  Jochen Peter AMES ,  Antonio Wagner DA SILVA PENNA

    IPC: B21C37/15 ,  F16L58/00 ,  F16L9/02

    CPC classification number: B21C37/154 ,  B21C37/06 ,  F16L9/02 ,  F16L58/00

    Abstract: A process for producing a multilayer pipe by expansion is disclosed, with or without heating, in which a multilayer pipe (1 ) comprises at least one outer pipe of metallic material (10) and an inner pipe of metallic material (20), the inner pipe of metallic material (20) having a yield strength lower than the yield strength of the outer pipe (23) and an external diameter smaller than the internal diameter of the outer pipe. The process for producing the multilayer pipe comprises a mounting step (34) between the pipes (10, 20), wherein the inner pipe is inserted inside the outer pipe, and at least one mechanical expansion step (36), comprising moving a mandrel (2) longitudinally and internally in the inner pipe (20) while the outer pipe and the inner pipe are held at a fixed position, wherein at least part of the mandrel (2) has a greater external diameter than the internal diameter of the inner pipe. When the pipes are subjected to a process of cold expansion, a “lined pipe” is obtained, which is characterized by mechanical bonding between the pipes. When the pipes are subjected to a process of hot expansion, a “clad pipe” is obtained, which is characterized by metallurgical bonding between the pipes.

    Abstract translation: 公开了一种用于通过膨胀制造多层管的方法，其中多层管（1）包括至少一个金属材料外管（10）和金属材料（20）的内管，其中内层 具有低于外管（23）的屈服强度的屈服强度的金属材料管（20），外径小于外管内径。 制造多层管的方法包括在管（10,20）之间的安装步骤（34），其中内管插入外管内，以及至少一个机械膨胀步骤（36），包括移动心轴 2）在内管（20）中纵向和内部，而外管和内管被保持在固定位置，其中心轴（2）的至少一部分具有比内管内径更大的外径 。 当管道经受冷膨胀过程时，获得“衬里管道”，其特征在于管道之间的机械结合。 当管道经受热膨胀过程时，获得“复合管”，其特征在于管道之间的冶金结合。

    METHOD FOR PRODUCING A MULTI-LAYER LARGE PIPE
    50.
    发明申请
    METHOD FOR PRODUCING A MULTI-LAYER LARGE PIPE 审中-公开
    生产多层大管的方法

    公开(公告)号：US20160082492A1

    公开(公告)日：2016-03-24

    申请号：US14785272

    申请日：2014-03-26

    Applicant: Thilo REICHEL ,  Ivan ARETOV ,  Vitaliy PAVLYK

    Inventor： Thilo REICHEL ,  Ivan ARETOV ,  Vitaliy PAVLYK

    IPC: B21C37/09 ,  B23K31/02 ,  B23K9/025 ,  B21C37/15 ,  B23K9/18

    CPC classification number: B21C37/09 ,  B21C37/0815 ,  B21C37/154 ,  B23K9/0253 ,  B23K9/18 ,  B23K31/027

    Abstract: A method for producing a multilayer large pipe having an outer support layer and at least one inner liner layer. Advantages with regard to productivity and the properties of the multilayer large pipe are achieved by the sequence of method steps wherein production of a support sheet is pre-bent to a predetermined initial bending radius for the support layer and at least one liner sheet is pre-bent to a predetermined initial bending radius for the liner layer, placement of the at least one pre-bent liner sheet against the inside of the pre-bent support sheet, with a positioning and parallel alignment of its longitudinal edges extending in the direction of the bending axis in order to form the support layer and the at least one liner layer, there is integral joining of at least one of two longitudinal edges of the at least one liner sheet to the support sheet, shaping of the composite of the integrally joined support layer and at least one liner layer to form a slit multilayer large pipe by a bending machine, with nonpositive, frictional engagement in liner regions that are not integrally joined, and there is closing of the remaining gap of the slit multilayer large pipe with a longitudinal seam by welding.

    Abstract translation: 一种制造具有外支撑层和至少一个内衬层的多层大管的方法。 通过顺序的方法步骤来实现生产率和多层大管的性能的优点，其中将支撑片材的制备预弯曲到用于支撑层的预定初始弯曲半径，并且至少一个衬垫片被预弯曲 弯曲到衬垫层的预定的初始弯曲半径，将至少一个预弯曲衬垫放置在预弯曲支撑片的内侧上，其纵向边缘的定位和平行对准沿着 弯曲轴线以形成支撑层和至少一个衬垫层，至少一个衬垫片的两个纵向边缘中的至少一个与支撑片材的整体接合，整体连接的支撑件的复合材料的成形 层和至少一个衬里层，以通过弯曲机形成狭缝多层大管，在未整体连接的衬里区域中具有非正，摩擦接合， d通过焊接闭合具有纵向接缝的狭缝多层大管的剩余间隙。

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