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    METHOD FOR PRODUCING A PLUG FOR HOT TUBE-MAKING
    2.
    发明申请
    METHOD FOR PRODUCING A PLUG FOR HOT TUBE-MAKING 审中-公开
    用于生产用于热管制造的插头的方法

    公开(公告)号：US20150125630A1

    公开(公告)日：2015-05-07

    申请号：US14394745

    申请日：2013-03-06

    申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

    发明人： Yasuyoshi Hidaka ,  Yasuto Higashida ,  Kazuhiro Shimoda

    IPC分类号： C23C4/06 ,  C23C4/12 ,  C23C4/18 ,  B21B25/00

    CPC分类号： C23C4/131 ,  B21B19/04 ,  B21B25/00 ,  B21B25/04 ,  C23C4/06 ,  C23C4/18

    摘要： A plug for hot tube-making having a sprayed coating resistant to peeling is provided. A method for producing a plug for hot tube-making according to the present embodiment includes a step of preparing a plug whose surface includes a sprayed coating formed thereon, the sprayed coating containing iron and an iron oxide; and a heat treatment step during which the plug is kept at 400° C. to 550° C. for 5 to 60 minutes.

    摘要翻译： 提供了具有耐剥离性的喷涂层的热管制造用插头。 本实施方式的热管制造用插头的制造方法包括：制备表面包括形成在其上的喷涂层的插塞的步骤，含有铁和氧化铁的喷涂层; 以及在400℃〜550℃下保持5〜60分钟的热处理工序。

    Method for Producing Plug
    5.
    发明申请
    Method for Producing Plug 审中-公开

    公开(公告)号：US20180023179A1

    公开(公告)日：2018-01-25

    申请号：US15549480

    申请日：2015-11-18

    申请人： Nippon Steel & Sumitomo Metal Corporation

    发明人： Kazuhiro Shimoda ,  Kouji Yamane ,  Yasuto Higashida ,  Yasuyoshi Hidaka ,  Yuji Inoue ,  Shusuke Shimooka

    IPC分类号： C23C4/131 ,  C23C4/06 ,  C23C4/10 ,  B21B25/00

    CPC分类号： C23C4/131 ,  B21B17/02 ,  B21B25/00 ,  C23C4/06 ,  C23C4/10 ,  C23C4/12

    摘要： A method for producing a plug includes: a step of preparing a plug base metal having a concave portion along a circumferential direction in an outer peripheral surface; and an arc spraying step of spraying a spraying wire rod material onto the outer peripheral surface of the plug base metal by arc spraying to form films containing Fe and Fe oxides on the outer peripheral surface of the plug base metal. The arc spraying step includes: a separating step of separating the outer peripheral surface of the plug base metal into a plurality of regions along an axial direction; and a step of performing arc spraying separately in each of the regions. In the separating step, a boundary between the regions is set at the concave portion. In this way, peeling of films at a connecting portion is prevented, and the lifetime of the plug can be increased.

    PLUG USED IN PIERCING MACHINE
    6.
    发明申请
    PLUG USED IN PIERCING MACHINE 有权
    胶带机用于打浆机

    公开(公告)号：US20150075243A1

    公开(公告)日：2015-03-19

    申请号：US14396100

    申请日：2013-03-26

    申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

    发明人： Yasuyoshi Hidaka ,  Yasuto Higashida ,  Kazuhiro Shimoda

    IPC分类号： B21B28/00 ,  B21B25/00

    CPC分类号： B21B28/00 ,  B05D1/02 ,  B05D3/12 ,  B21B19/04 ,  B21B25/00 ,  C23C4/01

    摘要： To increase the life of a plug used in a piercing machine for piercing-rolling a billet. The plug (10) is used in a piercing machine (30) that piercing-rolls a billet (36). The plug (10) includes a plug body (12), a build-up layer (14), and a sprayed film (16). The build-up layer (14) is formed on a surface of the plug body (12). The sprayed film (16) covers at least an area ranging from the rear end of the build-up layer (14) to a position of the maximum outer diameter of the plug body (12).

    摘要翻译： 增加用于穿孔机的穿孔机的使用寿命。 塞子（10）用于穿孔（36）的穿孔机（30）。 插头（10）包括插头主体（12），积聚层（14）和喷涂薄膜（16）。 积层（14）形成在塞体（12）的表面上。 喷涂膜（16）至少覆盖从积聚层（14）的后端到塞体（12）的最大外径的位置的区域。

    Plug and Method of Manufacturing the Same
    8.
    发明申请
    Plug and Method of Manufacturing the Same 审中-公开

    公开(公告)号：US20180281037A1

    公开(公告)日：2018-10-04

    申请号：US15763405

    申请日：2016-07-28

    申请人： Nippon Steel & Sumitomo Metal Corporation

    发明人： Yasuto Higashida ,  Yasuyoshi Hidaka

    IPC分类号： B21B25/02

    摘要： A plug that achieves prevention of peel-off of the coating and a method of manufacturing such a plug are provided. A plug (10) is used for piercing a billet. The plug (10) includes a plug body (1), a body coating (2), and a surface-layer coating (3). The body coating (2) is provided on a surface of the plug body. The body coating (2) contains iron and iron oxides. The surface-layer coating (3) is provided on the body coating (2). The surface-layer coating (3) contains iron and iron oxides. The surface-layer coating (3) has a porosity lower than that of a region of the body coating (2) adjacent to the surface-layer coating (3) and having a thickness equal to that of the surface-layer coating (3).

    METHOD OF PRODUCING PLUG FOR PIERCING-ROLLING
    9.
    发明申请
    METHOD OF PRODUCING PLUG FOR PIERCING-ROLLING 审中-公开
    生产滚珠丝杠的方法

    公开(公告)号：US20150132501A1

    公开(公告)日：2015-05-14

    申请号：US14395245

    申请日：2013-03-19

    申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

    发明人： Yasuto Higashida ,  Yasuyoshi Hidaka

    IPC分类号： C23C4/12 ,  C23C4/06 ,  B21B25/00

    CPC分类号： C23C4/06 ,  B21B19/04 ,  B21B25/00 ,  C23C4/131

    摘要： A method for producing a plug for use in a piercing rolling mill for producing a seamless steel tube/pipe includes an arc-spraying step of melting iron wires, and spraying molten material thereof onto a surface of a base metal of a plug by use of an arc-spray gun, so as to form a film containing oxide and Fe on the surface of the base metal of the plug. In the arc-spraying step, the surface of the base metal of the plug is divided into plural sections along an axial direction of the plug, and in turn, the arc-spraying is separately carried out in each of the plural sections while an intersection angle between the center line of a spraying stream from the arc-spray gun and the surface of the plug base metal is maintained within a range of 35 degrees to 90 degrees.

    摘要翻译： 一种用于生产无缝钢管/管道的穿孔轧机中使用的塞子的方法包括熔化铁丝的电弧喷涂步骤，并且通过使用以下方式将熔融材料喷射到塞子的母材表面上 电弧喷枪，以便在插头的贱金属的表面上形成含有氧化物和Fe的膜。 在电弧喷涂工序中，将插头的母材的表面沿着插头的轴向分割为多个部分，然后在多个部分中分别进行电弧喷涂，同时， 来自电弧喷枪的喷射流的中心线与插头母材的表面之间的角度保持在35度至90度的范围内。