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    Method and apparatus for rolling seamless tubes with a restrained mandrel
    3.
    发明授权
    Method and apparatus for rolling seamless tubes with a restrained mandrel 失效
    用约束心轴轧制无缝钢管的方法和装置

    公开(公告)号：US4311032A

    公开(公告)日：1982-01-19

    申请号：US113276

    申请日：1980-01-18

    申请人： Aurindo Nessi

    发明人： Aurindo Nessi

    IPC分类号： B21B23/00 ,  B21B25/02 ,  B21B17/04

    CPC分类号： B21B25/02

    摘要： Rolling mills for rolling seamless tubes from axially pierced blanks or billets using a restrained mandrel have suffered from a high dead time in the oprating cycle due to the necessity of returning a mandrel-restraining cross-piece or other member from its final position back to its initial position through the roll stands before beginning the positioning of the next billet to be rolled. This invention overcomes the above-mentioned problem by providing an elongate axially extending recess in the mandre-restraining crosspiece which allows the next billet to be positioned before the end of the preceding rolling operation. The mandrel-restraining crosspiece is ready to be connected up immediately to the next billet when the mandrel-restraining crosspiece has returned to its initial working position, by enabling the crosspiece to pass over the billet which goes through the recess. Retractable positive acting mechanical stops project into the recess, when advanced, to connect up the mandrel for a rolling cycle to commence.

    摘要翻译： 用于使用限制的心轴从轴向穿孔的坯料或坯料轧制无缝管的轧机在操作循环中遭受高死区时间，这是由于需要将心轴限制的横梁或其他构件从其最终位置返回到其 在开始定位下一个要轧制的坯料之前，通过辊架的初始位置。 本发明克服了上述问题，即通过在中心限制横档中设置细长的轴向延伸的凹槽，这允许下一个坯料在先前的轧制操作结束之前被定位。 当心轴限制横档已经返回到其初始工作位置时，通过使横档穿过通过凹槽的坯料，心轴限制横档准备好立即连接到下一个坯料。 可伸缩的正向作用机械止动件突出进入凹槽，当前进时，连接心轴以进行滚动循环。

    Device for inserting and pushing a bar into a press-piercing mill
    4.
    发明授权
    Device for inserting and pushing a bar into a press-piercing mill 失效
    用于将棒插入并推入冲孔机的装置

    公开(公告)号：US4289012A

    公开(公告)日：1981-09-15

    申请号：US964273

    申请日：1978-11-28

    申请人： Aurindo Nessi

    发明人： Aurindo Nessi

    IPC分类号： B21B17/06 ,  B21B25/06 ,  B21B25/02

    CPC分类号： B21B25/06 ,  B21B17/06

    摘要： A device whereby a square bar is inserted and pushed into a press-piercing mill (PPM), the bar being disposed along the rolling and drilling axis of the mill, the apparatus being characterized in that it comprises:a first thrust means (20) having a direction of action (R.sub.1) and thrusting the bar (7) at a speed set for introducing the bar into the (PPM);a second thrust means (14) having a direction of action (R) and thrusting the bar (7) at a speed set for rolling and simultaneously drilling the bar (7) in the (PPM), andan actuator (34) for simultaneously moving the first and second thrust means (20, 14) from a position in which the direction of action (R.sub.1) coincides with PPM rolling axis (A) and the direction of action (R) is at a distance from the rolling axis (A) to a position in which the direction of action (R.sub.1) is at a distance from the rolling axis (A) and the direction of action (R) coincides with the axis (A) and vice versa.

    摘要翻译： 一种装置，其中方棒被插入并推入冲压磨（PPM）中，该杆沿着轧机的轧制和钻孔轴线布置，该装置的特征在于它包括：第一推力装置（20） 具有作用方向（R1）并且以设定用于将杆引入（PPM）的速度推动杆（7）; 具有动作方向（R）的第二推力装置（14）并且以设定用于滚动的速度推动杆（7）并同时钻孔（PPM）中的杆（7）;以及致动器（34），用于同时 使第一和第二推力装置（20,14）从动作方向（R1）与PPM滚动轴线（A）重合的位置和动作方向（R）移动距离滚动轴线（A ）到动作方向（R1）距离滚动轴线（A）和动作方向（R）一定距离的位置与轴线（A）重合，反之亦然。

    Extraction device for continuous rolling mills using a retained mandrel
    5.
    发明授权
    Extraction device for continuous rolling mills using a retained mandrel 失效
    使用保留的心轴的连续轧机的提取装置

    公开(公告)号：US4158954A

    公开(公告)日：1979-06-26

    申请号：US878440

    申请日：1978-02-16

    申请人： Teresio Passoni

    发明人： Teresio Passoni

    IPC分类号： B21B17/14 ,  B21B17/02 ,  B21B17/04 ,  B21B25/00 ,  B21B25/02 ,  B21B33/00 ,  B21C45/00

    CPC分类号： B21B17/04 ,  B21C45/00

    摘要： The present invention is directed to an extraction device for use in continuous rolling mills for extracting tubes from retaining mandrels. The extraction device includes a frame having three pressure yielding rollers mounted therein. The rollers are normally retained in a fixed position for performing a final reduction on the tubes. However, if a mandrel on which the tube has been rolled accidentally enters the orifice defined by the three rollers, the rollers will yield to the excessive pressure and move away from the center of the frame by an amount corresponding to the maximum diameter of the tube containing the mandrel.

    摘要翻译： 本发明涉及一种用于连续轧机中的提取装置，用于从保持心轴中提取管。 提取装置包括具有安装在其中的三个压力传递辊的框架。 辊通常保持在固定位置，以便在管上进行最终的还原。 然而，如果管已经滚动的心轴意外地进入由三个辊限定的孔，则辊将屈服于过大的压力并且离开框架的中心移动相当于管的最大直径的量 包含心轴。

    Rolling mill for forming seamless tubes, and seamless tube-making apparatus comprising such a mill
    6.
    发明授权
    Rolling mill for forming seamless tubes, and seamless tube-making apparatus comprising such a mill 失效
    用于形成无缝管的轧机，以及包括这种轧机的无缝管制造设备

    公开(公告)号：US4091650A

    公开(公告)日：1978-05-30

    申请号：US759660

    申请日：1977-01-17

    申请人： Pierre Peytavin

    发明人： Pierre Peytavin

    IPC分类号： B21B17/08 ,  B21B17/12 ,  B21B25/02 ,  B21B17/10

    CPC分类号： B21B25/02 ,  B21B17/12

    摘要： The specification discloses a rolling mill for forming seamless tubes fromn extruded blank wherein the mandrel is driven through the milling gap in a direction tangential to the milling rolls at a speed of from about 5% to about 10% of that of the tube blank during milling. Similarly the mandrel has a length of from about 5% to about 10% of that of the tube blank.A further pair of milling rolls may be provided, adjacent the first and rotatable about mutually parallel axes orthogonal to the mutually parallel axes of rotation of the first pair of rolls in which case the mandrel will be twice as long as that required for a single milling roll gap.

    摘要翻译： 该说明书公开了一种用于从挤出坯料形成无缝管的轧机，其中心轴以与管坯的大约5％至大约10％的速度沿着与铣削辊相切的方向驱动通过铣削间隙 铣削。 类似地，心轴具有管坯的约5％至约10％的长度。

    Feed mechanism for rolling mill of the pilger type
    7.
    发明授权
    Feed mechanism for rolling mill of the pilger type 失效
    用于滚筒式轧机的进给机构

    公开(公告)号：US3662585A

    公开(公告)日：1972-05-16

    申请号：US3662585D

    申请日：1970-09-01

    申请人： MANNESMANN AG

    发明人： BELLMANN MANFRED

    IPC分类号： B21B21/04 ,  B21B25/02

    CPC分类号： B21B21/04

    摘要： In a feed mechanism for pilger rolling mills, having a mandrel rod coupled to a piston of a liquid brake, cooperating with a brake chamber. The compressed liquid in the chamber acts upon one side of a differential piston acted upon on its other side by a pressure force that persists beyond the instant of reversal of the mandrel rod.

    摘要翻译： 在用于打浆机的进料机构中，具有联接到液体制动器的活塞的芯棒，与制动室配合。 腔室中的压缩液体通过持续超过芯棒反转瞬间的压力作用在差动活塞的另一侧上。