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71 条记录 (耗时 0.014 秒)

    PIERCING MACHINE, MANDREL BAR, AND METHOD FOR PRODUCING SEAMLESS METAL PIPE USING THE SAME
    1.
    发明申请
    PIERCING MACHINE, MANDREL BAR, AND METHOD FOR PRODUCING SEAMLESS METAL PIPE USING THE SAME 有权

    公开(公告)号：US20210178442A1

    公开(公告)日：2021-06-17

    申请号：US16762241

    申请日：2018-11-28

    申请人： NIPPON STEEL CORPORATION

    发明人： Haruka OBE ,  Akihiro SAKAMOTO ,  Yasuhiko DAIMON

    IPC分类号： B21B19/04 ,  B21B25/04

    摘要： A mandrel bar of a piercing machine includes: a bar body; a coolant channel formed inside the bar body and through which a coolant flows; an inner surface cooling mechanism which is disposed in a cooling zone and is connected to the coolant channel and which, during piercing-rolling or during elongating rolling, ejects the coolant to outside of the bar body to cool an inner surface portion of a hollow shell inside the cooling zone; and an inner surface damming mechanism which is disposed adjacent to the cooling zone on a rearward side of the cooling zone and which, during piercing-rolling or during elongating rolling, suppresses the coolant that is ejected to outside of the bar body from contacting the inner surface portion of the hollow shell that is positioned rearward of the cooling zone.

    Piercer, Plug and Method of Manufacturing Seamless Pipe or Tube
    2.
    发明申请
    Piercer, Plug and Method of Manufacturing Seamless Pipe or Tube 有权
    穿刺管，插头和制造无缝管或管的方法

    公开(公告)号：US20100089111A1

    公开(公告)日：2010-04-15

    申请号：US11922089

    申请日：2006-06-14

    申请人： Kazuhiro Shimoda ,  Tomio Yamakawa

    发明人： Kazuhiro Shimoda ,  Tomio Yamakawa

    IPC分类号： B21B19/04 ,  B21B25/04 ,  B21B25/00

    CPC分类号： B21B25/04 ,  B21B19/04

    摘要： A plug 2 used for a piercer according to the invention includes a tip end portion 23, a cylindrical portion 24, a barrel portion 25, a mandrel coupling portion 22, and an injection hole 21. The injection hole 21 penetrates from the surface of the cylindrical portion 24 to the surface of the mandrel coupling portion 22 and an externally supplied lubricant is injected from the hole. A clearance forms between the pierced material and the cylindrical portion 24. The injection hole 21 is formed at the cylindrical portion 24, and therefore the material in the process of piercing does not contact the injection hole 21. Therefore, an inner surface defect attributable to the contact between the material and the injection hole 21 can be prevented from being generated.

    摘要翻译： 用于根据本发明的穿孔机的塞子2包括前端部23，圆筒部24，筒部25，心轴连接部22和喷射孔21.喷射孔21从 圆筒部24到芯棒连结部22的表面，从外部喷出润滑剂。 在穿孔材料和圆筒部24之间形成间隙。喷射孔21形成在圆筒部24处，因此刺穿过程中的材料不与喷射孔21接触。因此，由于 能够防止材料与注入孔21的接触。

    Process for application of free-flowing material on the inner surface of a tube blank and device for performing the process
    5.
    发明授权
    Process for application of free-flowing material on the inner surface of a tube blank and device for performing the process 失效
    在管坯的内表面上施加自由流动的材料和用于执行该过程的装置的方法

    公开(公告)号：US4790263A

    公开(公告)日：1988-12-13

    申请号：US66523

    申请日：1987-06-26

    申请人： Beat Eckert ,  Guido Huber ,  Norbert Richle

    发明人： Beat Eckert ,  Guido Huber ,  Norbert Richle

    IPC分类号： B21B25/04 ,  B05B7/10 ,  B05C7/02 ,  B05C7/08 ,  B05D7/22 ,  B21B23/00 ,  B21B45/04 ,  B21B45/06 ,  B21B45/08 ,  C23G3/04 ,  B05B1/02

    CPC分类号： B21B45/04 ,  C23G3/04

    摘要： The material is applied to the inner surface by means of a carrier gas stream, provided with a swirl, conducted through the hollow space. To prevent or reduce the swirl loss, which occurs if the laden carrier gas stream, provided with the swirl, forces the stagnant air in the hollow space from this space and then the loss develops by friction on the inner surface, before and during the flow of the laden carrier gas provided with the swirl, an additional gas, not laden with the material, is conducted through the hollow space with a siwrl, whose direction of rotation corresponds to the swirl of the laden carrier gas stream. For this purpose, the device has on the outlet of a passage element (1), equipped with a swirl-producing device 3 for the laden carrier gas stream, outlet nozzles (4), which feed to the laden carrier gas stream the additional gas with a swirl, whose direction of rotation corresponds to that (5) of the swirl-producing device.

    摘要翻译： 该材料借助于具有通过中空空间传导的漩涡的载气流施加到内表面。 为了防止或减少涡流损失，如果装有涡流的载货载气流迫使来自该空间的中空空间中的滞留空气，并且在流动之前和期间，内表面上的摩擦会产生损失 设置有涡流的载货载气中，不含材料的附加气体通过中空空间被导入，其中旋转方向对应于载气载气流的涡流。 为此目的，该装置具有通道元件（1）的出口，该通道元件（1）装备有用于载气载气流的旋流产生装置3，出口喷嘴（4），其向载入的载气流供应附加气体 其旋转方向与旋流产生装置的旋转方向相对应。