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    Method for producing seamless tube/pipe
    2.
    发明授权
    Method for producing seamless tube/pipe 有权
    生产无缝管/管的方法

    公开(公告)号：US09254511B2

    公开(公告)日：2016-02-09

    申请号：US13991635

    申请日：2011-12-06

    申请人： Kenichi Saitou ,  Kazuhiro Shimoda ,  Tomio Yamakawa

    发明人： Kenichi Saitou ,  Kazuhiro Shimoda ,  Tomio Yamakawa

    IPC分类号： B21B21/02 ,  B21B19/04 ,  B21B25/00

    CPC分类号： B21B21/02 ,  B21B19/04 ,  B21B25/00 ,  B21B2261/08 ,  B21B2261/10

    摘要： By using a piercing mill that includes a pusher on the entrance side, a plug on the exit side along a pass line, and a plurality of angled rolls as being provided around the plug so as face to each other, in the case where the maximum diameter of an unsound region consisting of center segregation and porosity in a cross section of a billet is d [mm], piercing-rolling is performed under the condition that the plug nose rolling reduction ratio (TDF) expressed by Formula (1) satisfies Formula (2). TDF=(Bd−D1)/Bd  (1) TDF≦−0.50×(d/Bd)+0.06  (2) In Formulae (1) and (2), Bd is the billet diameter [mm], and D1 is the opening [mm] between the angled rolls at the plug nose position. Thereby, when piercing-rolling is performed, the occurrence of an inner surface flaw attributable to the center segregation and porosity in the billet can be prevented reliably.

    摘要翻译： 通过使用包括在入口侧的推动器的穿孔机，沿着通行线的出口侧的塞子和在插头周围设置成彼此面对的多个成角度的辊，在最大值 在坯料的横截面中由中心偏析和孔隙率组成的不固定区域的直径为d [mm]，在由式（1）表示的塞子前端滚动压下率（TDF）满足公式的条件下进行穿孔轧制 （2）。 TDF =（Bd-D1）/ Bd（1）TDF＆nlE; -0.50×（d / Bd）+0.06（2）在式（1）和（2）中，Bd是坯料直径[mm]，D1是 在插头前端位置的成角度的卷轴之间打开[mm]。 因此，当进行穿孔轧制时，可以可靠地防止由于中心偏析引起的内表面缺陷的发生和坯料中的孔隙率的发生。

    PILGER ROLLING MILL WITH A CRANK DRIVE
    3.
    发明申请
    PILGER ROLLING MILL WITH A CRANK DRIVE 有权
    带有起重机驱动装置的滚筒铣刀

    公开(公告)号：US20150343505A1

    公开(公告)日：2015-12-03

    申请号：US14652613

    申请日：2013-12-16

    申请人： SANDVIK MATERIALS TECHNOLOGY DEUTSCHLAND GMBH

    发明人： Thomas FROBOSE

    IPC分类号： B21B21/00 ,  B21B35/14 ,  B21B21/02

    CPC分类号： B21B21/005 ,  B21B21/02 ,  B21B35/06 ,  B21B35/14 ,  B21B2203/20

    摘要： A pilger rolling mill with a roll stand moves linearly back and forth along a movement direction and includes a crank mechanism having a rotatably supported crankshaft with a crank pin and push rod. A first end of the push rod is pivotably fastened to the crank pin and a second end is pivotably fastened to the roll stand, so that during operation of the pilger rolling mill a rotary movement of the crankshaft is converted into an oscillating movement of the roll stand along the movement direction. A compensation shaft is rotatably supported about an axis of rotation and includes a distribution of mass that is not rotationally symmetrical relative to its axis of rotation and a counter-mass. The crankshaft and the compensation shaft are connected to one another by a transmission so that a rotation of the crankshaft leads to a rotation of the compensation shaft.

    摘要翻译： 具有辊架的滚筒轧机沿运动方向线性地前后移动，并且包括具有带曲柄销和推杆的可旋转地支撑的曲轴的曲柄机构。 推杆的第一端可枢转地紧固到曲柄销，并且第二端可枢转地紧固到辊架上，使得在打包机轧机的操作期间，曲轴的旋转运动被转换成辊的摆动运动 站在运动方向。 补偿轴围绕旋转轴线可旋转地支撑，并且包括相对于其旋转轴线和反质量不是旋转对称的质量分布。 曲轴和补偿轴通过变速器彼此连接，使得曲轴的旋转导致补偿轴的旋转。

    High strength cemented carbide dies and mandrels for a pilgering machine
    5.
    发明授权
    High strength cemented carbide dies and mandrels for a pilgering machine 失效
    高强度硬质合金模具和切割机的心轴

    公开(公告)号：US4866968A

    公开(公告)日：1989-09-19

    申请号：US63038

    申请日：1987-06-17

    申请人： Francis Cellier ,  Albert B. Cady

    发明人： Francis Cellier ,  Albert B. Cady

    IPC分类号： B21B21/00 ,  B21B21/02 ,  B21B25/00

    CPC分类号： B21B21/02 ,  B21B25/00 ,  B21B21/005

    摘要： Pilger tooling for use in a pilgering machine includes an elongated stationary mandrel for supporting a tube thereon in position for cold reduction, and a pair of roller dies positioned along opposing sides of the mandrel and in oppositely-facing relation to one another for coacting with the mandrel in reducing the cross-sectional size of the tube. Each roller die is ring-shaped with a central opening for mounting the die on a shaft and has a keyway defined therein adjacent the central opening for receiving a key to secure the die for movement with the shaft. The keyway also provides a timing mark for accurately mounting the die on the shaft. Each roller die has two relief pockets formed in the periphery thereof in circumferentially spaced apart relation with a bridge extending therebetween, and a tube-reducing groove formed in the periphery thereof having a tapered configuration and opening at its opposite ends into the respective pockets. The end of one of the relief pockets is disposed radially outwardly from and aligned with the center of the keyway so as to provide a reference point on the die adjacent the periphery thereof. Each of the mandrel and roller dies are fabricated from a high strength cemented carbide material which is composed of tungsten carbide ranging from about 81.5 to about 86 percent by weight and cobalt ranging from about 14 to about 18.5 percent by weight.

    摘要翻译： 用于打孔机的皮革工具包括细长的固定心轴，用于在其上支撑用于冷还原的位置的管，以及一对辊模，其位于心轴的相对侧并且彼此相对地相对于彼此共同作用 心轴在减小管的横截面尺寸。 每个滚子模具是环形的，具有用于将模具安装在轴上的中心开口，并且具有邻近中心开口限定的键槽，用于接收钥匙以固定模具以与轴一起移动。 键槽还提供了将模具精确地安装在轴上的定时标记。 每个辊模具具有两个在其周围形成有与其间延伸的桥的间隔开的关系的凹槽，以及在其周边形成的具有锥形构造并且在其相对端处开口到相应凹穴中的管减小凹槽。 一个卸压口的端部从键槽的中心径向向外设置并与其对准，从而在与其周边相邻的模具上提供参考点。 芯棒和辊模具中的每一个由高强度硬质合金材料制成，该硬质合金材料由碳化钨组成，其碳重量为约81.5至约86重量％，钴为约14至约18.5重量％。

    METHOD FOR PRODUCING SEAMLESS METALLIC TUBE BY COLD ROLLING
    7.
    发明申请
    METHOD FOR PRODUCING SEAMLESS METALLIC TUBE BY COLD ROLLING 审中-公开
    通过冷轧生产无缝金属管的方法

    公开(公告)号：US20110271731A1

    公开(公告)日：2011-11-10

    申请号：US13162840

    申请日：2011-06-17

    申请人： Chihiro HAYASHI

    发明人： Chihiro HAYASHI

    IPC分类号： B21B17/02

    CPC分类号： B21B21/00 ,  B21B3/00 ,  B21B3/02 ,  B21B17/14 ,  B21B19/10 ,  B21B21/005 ,  B21B21/02 ,  B21B23/00 ,  B21B2261/04 ,  B21B2261/08 ,  B21B2265/14

    摘要： In cold rolling of a seamless metallic tube with a cold pilger mill, when a reduction ratio of an outside diameter becomes excessive in comparison to a reduction ratio of a wall thickness, strain in a circumferential direction on flange regions becomes excessive. As a result, compressive stress in a circumferential direction becomes excessive, so that wrinkle imperfections are generated inside a tube and folded on groove bottom regions to become folded defects. This process is repeated to be developed into inside defects. When a hollow shell is produced by the Mannesmann-mandrel process instead of the extrusion process, inside wrinkle imperfections are generated with a sizing mill (a stretch reducer or a sizer) at a stage of hollow shell. Since the inside wrinkle imperfections further grow in cold rolling, it is necessary to pay attention thereto. In consideration of these, (a reduction ratio of an outside diameter/a reduction ratio of a wall thickness both in a cold pilger mill) is set to not more than 1/2. It is, thereby, possible to obtain a high-quality seamless metallic tube, inside defects thereof being suppressed, produced by cold rolling.

    摘要翻译： 在使用冷打包机的无缝金属管的冷轧中，与壁厚的减少率相比，当外径的减少率变得过大时，凸缘区域的圆周方向的变形过大。 结果，圆周方向的压缩应力变得过大，从而在管内产生褶皱缺陷，并折叠在槽底部区域上，成为折叠缺陷。 这个过程重复发展成内部缺陷。 当通过曼内斯曼 - 心轴过程而不是挤出工艺生产中空壳时，在中空壳的阶段用定径磨（拉伸减速机或分级机）产生皱纹缺陷。 由于内部皱纹缺陷在冷轧中进一步增长，因此需要注意。 考虑到这些（冷吹风机中的壁厚的外径/减速比的减小率）设定为不大于1/2。 从而可以获得通过冷轧制造的内部缺陷，能够获得高质量的无缝金属管。

    Method for producing ultra thin wall metallic tube by cold rolling method
    8.
    发明授权
    Method for producing ultra thin wall metallic tube by cold rolling method 有权
    冷轧法生产超薄壁金属管的方法

    公开(公告)号：US07992417B2

    公开(公告)日：2011-08-09

    申请号：US12253760

    申请日：2008-10-17

    申请人： Chihiro Hayashi

    发明人： Chihiro Hayashi

    IPC分类号： B21B17/10

    CPC分类号： B21B21/005 ,  B21B21/02 ,  B21B2261/04 ,  B21B2261/08 ,  B21B2267/06 ,  B21B2267/20 ,  B21C37/30

    摘要： An aspect of the present invention provides a method for producing an ultra thin wall metallic tube by a cold rolling method with significant wall thickness reduction. In a method for producing the metallic tube with a cold pilger mill, a wall thickness is reduced to perform elongation while a wall thickness center diameter is expanded using a pair of rolls, which has a tapered groove die whose diameter is gradually expanded or reduced from an engaging inlet side of the roll toward a finishing outlet side thereof, and a tapered mandrel bar, whose diameter is gradually expanded from an engaging inlet side of the tapered mandrel bar toward a finishing outlet side thereof.

    摘要翻译： 本发明的一个方面提供了一种通过冷轧方法生产超薄壁金属管的方法，其具有显着的壁厚减小。 在使用冷吹炼机制造金属管的方法中，使用一对辊将壁厚度减小，同时延伸壁厚中心直径，该直径从直径逐渐扩大或缩小的锥形槽模 辊的接合入口侧朝向精加工出口侧，以及锥形芯棒，其直径从锥形芯棒的接合入口侧朝向其精加工出口侧逐渐膨胀。

    COLD ROLLING PROCESS FOR METAL TUBES
    9.
    发明申请
    COLD ROLLING PROCESS FOR METAL TUBES 有权
    金属管冷轧工艺

    公开(公告)号：US20060288751A1

    公开(公告)日：2006-12-28

    申请号：US11475116

    申请日：2006-06-27

    申请人： Satoshi Tsuyuguchi ,  Toshihide Ono

    发明人： Satoshi Tsuyuguchi ,  Toshihide Ono

    IPC分类号： B21B17/06

    CPC分类号： B21B21/00 ,  B21B21/02 ,  B21B25/00 ,  B21B38/04

    摘要： In the cold rolling process by pilger rolling that holds a mandrel between each of paired roll-dies, by optimizing the side relief rate SR and the mandrel factors like the taper θ1 in the primary deformation zone of the mandrel and the taper θ2 in the final size reduction zone thereof, and the feed rate F of the workpiece material, and at the same time by properly adjusting the relationship between the side relief rate SR and the feed rate F, the dimension-related shape characteristics (near-perfect round shape) of the tube inside surface after the final finishing rolling process by pilger rolling can be ascertained to thereby ensure excellent surface property without requiring a new apparatus, and further without causing the decrease of the product yield and/or the increase of the manufacturing costs. Thus, this can be widely applied for producing steam generator tubes which exhibits high S/N ratio in the inner coil eddy current testing.

    摘要翻译： 在通过在每个成对的辊模之间保持心轴的通过滚筒滚动的冷轧过程中，通过优化侧向释放速率SR和心轴因素，如心轴的主变形区域中的锥度θ1和锥形角2 其最终尺寸减小区域和工件材料的进给速度F，同时通过适当地调节侧面卸载速率SR和进给速度F之间的关系，尺寸相关的形状特征（接近完美的圆 形状）可以确定通过打孔滚轧进行最终精轧之后的管内表面，从而确保优异的表面性能而不需要新的装置，并且进一步不会导致产品产量的降低和/或制造成本的增加 。 因此，可以广泛地应用于内圈涡流检测中表现出高S / N比的蒸汽发生器管。

    Quick change pilger die and assembly of same with rollstand arbor
    10.
    发明授权
    Quick change pilger die and assembly of same with rollstand arbor 失效
    快速更换冲压模具及其与轧辊架的组装

    公开(公告)号：US5906130A

    公开(公告)日：1999-05-25

    申请号：US111050

    申请日：1998-07-07

    申请人： Keith Robert Sekera ,  Albert Bruce Cady ,  James Edward Buzcak

    发明人： Keith Robert Sekera ,  Albert Bruce Cady ,  James Edward Buzcak

    IPC分类号： B21B21/02 ,  B21B39/20

    CPC分类号： B21B21/02

    摘要： A pilger die assembly in which the die has an annular body with an opening extending from a central, through bore to the peripheral surface. The opening subtends a circumferential angle at the through bore of less than 180.degree.. The cylindrical arbor has a section of reduced cross-sectional dimension, preferably formed by a flat. The die is positioned with the opening aligned with the flat, slid into coaxial registration with the arbor, rotated to a captured position in which the opening is no longer aligned with flat on the arbor and then pushed axially to engage a key on the arbor in a keyway extending axially from one side face of the die. A stop screw threaded into the arbor adjacent the other side face of the die locks it in place.

    摘要翻译： 一种冲模组件，其中模具具有环形体，其具有从中心通孔延伸到周边表面的开口。 开口对应于通孔处的圆周角小于180°。 圆柱形心轴具有减小的横截面尺寸的部分，优选地由平坦形成。 模具定位成使得开口与平面对准，滑动成与心轴同轴对准，旋转到捕获位置，在该捕获位置，开口不再与心轴上的平面对准，然后轴向推动以接合心轴上的键 从模具的一个侧面轴向延伸的键槽。 螺纹连接在与模具的另一侧面相对的心轴上的止动螺丝将其锁定就位。