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    Machine for forming spiral grooves in metal pipe inner surface
    3.
    再颁专利
    Machine for forming spiral grooves in metal pipe inner surface 失效

    公开(公告)号：USRE36194E

    公开(公告)日：1999-04-27

    申请号：US57980

    申请日：1998-04-10

    申请人： Aritaka Tatsumi

    发明人： Aritaka Tatsumi

    IPC分类号： B21C3/16 ,  B21C37/20 ,  B21D17/00 ,  B21B17/08

    CPC分类号： B21C37/202 ,  B21C3/16 ,  B21C37/207

    摘要： An improved machine for forming a plurality of thin, spiral grooves in the inner surface of a metal pipe. A grooving plug is inserted and held in the metal pipe in such a manner that its axial position is constant and the metal pipe, while being moved longitudinally, is pressed by a plurality of balls which rotate planetarily around the outer surface of the metal pipe at a position corresponding to the position of the grooving plug to continuously form a plurality of spiral grooves in the inner surface of the metal pipe. Thereafter, the metal pipe is finished through a die. The machine manufactures at a high rate metal pipe which has a smooth outer surface and a grooved inner surface.

    Method of controlling mill pacing
    4.
    发明授权
    Method of controlling mill pacing 失效
    控制起搏的方法

    公开(公告)号：US4589268A

    公开(公告)日：1986-05-20

    申请号：US603632

    申请日：1984-04-25

    申请人： Kazuyuki Sakurada ,  Takanori Fujiwara ,  Yutaka Funyu

    发明人： Kazuyuki Sakurada ,  Takanori Fujiwara ,  Yutaka Funyu

    IPC分类号： B21B17/02 ,  B21B17/08 ,  B21B19/04 ,  B21B23/00 ,  B21B37/00 ,  B21B37/78 ,  B21B45/00

    CPC分类号： B21B37/78 ,  B21B37/005 ,  B21B17/02 ,  B21B17/08 ,  B21B19/04 ,  B21B23/00 ,  B21B45/004

    摘要： According to the present invention, in a method of controlling a mill pacing in a rolling equipment wherein a plurality of serial rolling mills are provided downstream of a heating furnace in which a plurality of materials are rested on a furnace hearth integrally moving with the materials and can be successively extracted, respective rolling cycle times are sought from periods of time between the starts of rolling in respective rolling mills of a subsequent material to be extracted from the heating furnace and the readiness for rolling of the following material in the respective rolling mills, the maximum value of the above-described respective rolling cycle times is assumed as an extraction cycle time of the subsequent material to be extracted to thereby presuppose an extraction time of the subsequent material to be extracted from the heating furnace, allowable retard periods of time of the materials immediately before the respective rolling mills are predetermined, the presupposed retard periods of time of the subsequent materials to be extracted immediately before the respective rolling mills are confirmed to be within the aforesaid allowable retard periods of time, and further, a heating critical cycle time is confirmed to be securable which is sufficient for applying heat of a predetermined value to the subsequent material to be extracted through the latest material to be loaded, whereby the subsequent material is extracted at the aforesaid presupposed extraction time. As a result, the operating condition of the rolling line as a whole are optimized, so that the productivity can be improved.

    摘要翻译： 根据本发明，在一种控制轧制设备中的轧机起搏方法中，其中多个串联轧机设置在加热炉的下游，其中多个材料搁置在与该材料一体移动的炉床上， 可以连续地提取各自的轧制循环时间，从在从各加热炉取出的后续材料的各轧机的轧制开始之间的时间段以及在各轧机中轧制后续材料的准备状态， 假定上述各滚动循环次数的最大值作为随后提取的材料的提取循环时间，从而预先确定从加热炉中提取的后续材料的提取时间，允许的延迟时间段 在各轧机之前的材料是预先确定的 在相应的轧机确认为在上述允许的延迟时间之前即将提取的随后的材料的等待时间段，此外，确认加热临界循环时间是足够的，其对于施加热量是足够的 通过最新的待加载材料提取的后续材料的预定值，由此在上述预先提取时间提取后续材料。 结果，轧制线整体的运行状态被优化，从而可以提高生产率。

    Pierced metal tube blanks and methods of making such blanks
    5.
    发明授权
    Pierced metal tube blanks and methods of making such blanks 失效
    穿孔金属管坯和制造这种坯料的方法

    公开(公告)号：US4262516A

    公开(公告)日：1981-04-21

    申请号：US957611

    申请日：1978-11-03

    申请人： Frank Weber ,  Erwin Jericho ,  Werner Friedrichs

    发明人： Frank Weber ,  Erwin Jericho ,  Werner Friedrichs

    IPC分类号： B21C23/10 ,  B21B17/00 ,  B21B17/02 ,  B21B17/08 ,  B21B23/00 ,  B21J5/10 ,  B21K21/02 ,  B21C23/18 ,  B21D22/26

    CPC分类号： B21B23/00 ,  B21K21/02

    摘要： A pierced metal blank having an annular cross-section with one end closed and the other end open for use in the manufacture of seamless tubes has a bore with portions of different diameters, the portion of larger diameter, which is adjacent the open end of the blank has a wall thickness which is less than that of the portion of smaller diameter which is adjacent the closed end of the blank. Preferably there is a conical transition between the two portions of different diameters. The blank is preferably made from a metal billet of square cross-section in a substantially cylindrical piercing mould by piercing the billet within the mould by means of a stepped mandrel which presses the material of the square billet outwards into contact with the cylindrical wall of the mould.

    摘要翻译： 一种具有环形横截面的穿孔金属坯料，其一端封闭，另一端开放用于制造无缝管，其具有不同直径部分的孔，较大直径的部分邻近 坯料的壁厚小于与坯料的封闭端相邻的较小直径部分的壁厚。 优选地，在不同直径的两个部分之间存在锥形过渡。 坯料优选由大致圆柱形的穿孔模具中的正方形横截面的金属坯料制成，其中通过将方块坯的材料向外挤压而与模具的圆柱形壁接触的阶梯型心轴 模子。

    Simultaneous plug-mill rolling for increased production and enhanced tube quality
    6.
    发明授权
    Simultaneous plug-mill rolling for increased production and enhanced tube quality 失效
    同时切丝机轧制增加生产和提高管材质量

    公开(公告)号：US4178789A

    公开(公告)日：1979-12-18

    申请号：US910973

    申请日：1978-05-30

    申请人： James W. Ruff

    发明人： James W. Ruff

    IPC分类号： B21B17/08 ,  B21B17/12

    CPC分类号： B21B17/12

    摘要： A pierced billet is fed through a plug rolling mill, equipped with a plurality of grooves. Initial rolling is effected in conventional manner, i.e. the shell is (i) rammed over a forming plug mounted on the front end of a mandrel, (ii) drawn over the plug by the work rolls, (iii) removed from the mandrel and (iv) returned to the entering side of the mill. Rather than effecting a second pass on the shell in the same roll groove, the shell is transferred to an adjacent receiving trough, aligned with a second groove of the same work roll. A second shell is then placed on the trough aligned with the first roll groove, thereafter the first shell is given a second pass in conjunction with the first pass of the next shell. Because of the use of more than one groove for subsequent passes, each roll pass can be contoured to suit the reduction desired. Thus, use of a second groove for the second pass permits a reduction in the roll flare employed, such that a significantly rounder tube can be delivered in the finish pass.

    摘要翻译： 穿孔坯料通过配备有多个槽的塞子轧机进料。 初始轧制以常规方式进行，即壳体（i）被撞在安装在心轴前端上的成形插塞上，（ii）通过工作辊拉出塞子，（iii）从芯棒上取下， iv）返回工厂的入口处。 不是在相同的辊槽中对壳体进行第二次传递，而是将壳体转移到与相同工作辊的第二槽对准的相邻容纳槽。 然后将第二壳放置在与第一辊槽对准的槽上，此后第一壳与下一个壳的第一次通过给定第二次通过。 由于使用多于一个的槽用于随后的通过，所以每个辊道可以被轮廓化以适合所需的减少。 因此，在第二次通过中使用第二凹槽可以减少所使用的卷筒火炬，使得可以在完成道次中传送明显更圆的管子。

    Method of producing seamless steel tube
    7.
    发明授权
    Method of producing seamless steel tube 失效
    生产无缝钢管的方法

    公开(公告)号：US4006618A

    公开(公告)日：1977-02-08

    申请号：US597812

    申请日：1975-07-21

    申请人： Samon Yanagimoto ,  Minoru Kawaharada ,  Seishiro Yoshiwara ,  Susumu Mizunuma ,  Motoaki Sugiyama

    发明人： Samon Yanagimoto ,  Minoru Kawaharada ,  Seishiro Yoshiwara ,  Susumu Mizunuma ,  Motoaki Sugiyama

    IPC分类号： B21B17/08 ,  B21B23/00 ,  B21B19/04 ,  B21B37/00

    CPC分类号： B21B23/00 ,  B21B17/08

    摘要： In a method of producing seamless steel tube from billet having a square or rectangular cross-section by the step of piercing a workpiece and rolling steps following the piercing step, each of such steps being conducted with a plug held by a mandrel toward the center of cross section of the workpiece while the workpiece is rolled by a pair of rolls with axes arranged horizontally. The piercing step includes guiding the workpiece by a plurality of pairs of guide rolls provided along the rolling line ahead of the rolling rolls as the billet is forced therethrough to maintain the billet in such a position that the hollow shell will not have any nonuniformity of wall thickness and piercing workpiece with a plug as the workpiece is pushed and inserted between the rolling rolls under the forced guidance by a pushing force working in the axial direction, and as the plug progresses into the center of cross section of the workpiece, so as to pierce the workpiece, thereby producing seamless steel tube having very little nonuniformity of the wall thickness.

    摘要翻译： 在通过穿孔工件和穿孔步骤之后的轧制步骤的具有正方形或矩形横截面的坯料生产无缝钢管的方法中，每一个步骤都是用一个心轴向中心延伸的 当工件被水平排列的一对辊轧制时，工件的横截面。 穿孔步骤包括当坯料被迫穿过其中时沿着轧制线前面的轧制线设置的多对导向辊来引导工件，以将坯料保持在这样的位置，使得中空壳体不会具有任何不均匀的壁 厚度和穿孔工件随着工件被推动并在强制引导下通过在轴向工作的推力而插入轧辊之间，并且当插头进入工件的横截面中心时，以便 刺穿工件，从而生产壁厚不均匀的无缝钢管。

    Multi-roll mandrel mill and method of producing seamless tubes
    10.
    发明授权
    Multi-roll mandrel mill and method of producing seamless tubes 有权
    多辊心轴轧机及无缝管生产方法

    公开(公告)号：US08601844B2

    公开(公告)日：2013-12-10

    申请号：US13425749

    申请日：2012-03-21

    申请人： Akihito Yamane

    发明人： Akihito Yamane

    IPC分类号： B21B17/08 ,  B21B19/08

    CPC分类号： B21B17/04 ,  B21B27/024

    摘要： A multi-roll mandrel mill comprises a plurality of grooved roll bodies as a roll pass for elongation rolling of a shell and a plurality of roll stands, each having roll shafts and roll chock portions for driving the grooved roll bodies for driving the grooved roll bodies, wherein bearings are internally contained in each grooved roll body. Optimizing the design of roll chock portions for every setup is achieved by a tube-making setup of the mandrel mill, wherein at least one of either or both of the roll shafts and the roll chock portions is replaced with a part(s) having a different shape(s) in addition to changing of the grooved roll bodies. The optimization of the design is effective in preventing underfill and overfill.

    摘要翻译： 多辊心轴轧机包括多个槽轧辊体，作为用于壳体的伸长轧制的辊道和多个辊架，每个辊架具有辊轴和辊轴承座部分，用于驱动用于驱动带槽辊体的带槽辊体 其中轴承内部容纳在每个带槽辊体中。 通过芯棒式无缝管轧机的制管设备实现每个设置的辊轴承部分的设计优化，其中辊轴和辊轴承座部分中的一个或两个中的至少一个被替换为具有 除了改变带槽辊体之外，还有不同的形状。 设计的优化有效防止了底部填充和填充。