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    • 2. 发明公开
    • Verfahren zum Herstellen nahtloser Rohre nach dem Stopfenwalzverfahren
    • Verfahren zum Herstellen nahtloser Rohre nach dem Stopfenwalzverfahren。
    • EP0566223A1
    • 1993-10-20
    • EP93250081.2
    • 1993-03-12
    • MANNESMANN Aktiengesellschaft
    • Häusler, Karl Heinz
    • B21B17/12
    • B21B17/12
    • Die Erfindung betrifft ein Verfahren zum Herstellen nahtloser Rohre, nach dem Stopfenwalzenverfahren, bei dem ein Hohlblock über einen feststehenden, sich an einer Stange abstützenden Stopfen in einem Walzgerüst geschlossenem Kaliber in mindestens zwei Stichen zu einer Luppe aufgeweitet und gestreckt wird, wobei nach jedem Stich die Luppe mittels eines Treibapparates von der Stange entgegen der Walzrichtung abgezogen und vor dem folgenden Stich um 90 o um die Längsachsen gedreht wird, wobei der Stopfen nach jedem Stich gewechselt wird. Um ein Stopfenwalzverfahren herkömmlicher Art so zu modifizieren, daß auf die Glättwalzanlagen und den Nachwärmofen verzichtet werden kann, wird vorgeschlagen, daß bei mehreren aufeinanderfolgenden Stichen mindestens in einem, vorzugsweise in dem ersten Stich im Bereich des Kalibergrundes durch Veränderung des Abstandsmaßes der Walzen eine Wanddicke eingestellt wird, die das Dünnziehen dieses Wandbereiches im darauffolgenden Walzstich im Sinne einer über den Umfang gleichmäßigen Wanddicke der fertiggewalzten Stopfenluppe berücksichtigt.
    • 本发明涉及一种通过塞子轧制方法制造无缝管的方法,其中中空锭在具有闭合槽的辊架中在至少两次通过支撑在杆上的固定塞上膨胀和拉伸,给出 管坯,在每次通过之后,通过驱动单元在与轧制方向相反的方向上将坯料从纵向轴线旋转90度,在每次通过后改变塞子 。 为了改进常规型的塞子滚动方法,可以省略平滑辊单元和再加热炉,所以提出在多次连续通过的情况下, 轧辊在槽底部的至少一个通道中,优选地是第一个,在槽底部的区域中变化,以产生考虑到在随后的轧制道次中从该壁区域拉出的壁厚,确保均匀的壁厚度 完成的塞子在其圆周上空白。
    • 3. 发明授权
    • Continuous flow plug mill system
    • 连续流动堵头机系统
    • US4037449A
    • 1977-07-26
    • US710013
    • 1976-07-30
    • James W. Schuetz
    • James W. Schuetz
    • B21B17/08B21B17/12B21B25/06B21B17/10
    • B21B25/06B21B17/12
    • The disclosure relates to method and apparatus for the operation of a plug mill, in the production of seamless tubes. Provisions are made for maintaining a circulating supply of plug and mandrel assemblies such that, after a tubular shell from a piercing mill has been given a first pass through the plug mill, the entire combination of the plug and mandrel assembly, and the just-processed shell, are transferred bodily into alignment with the axis of a second stage mill. The shell is then advanced in the same direction through a second mill stand, over a second plug, while simultaneously being stripped from the first mandrel. By enabling the shell to be passed through the second plug mill pass, without the requirement of an intermediate operation of stripping the shell from the first stage mandrel, significant time economies are realized. With conventional plug mill equipment and techniques, the plug mill represents a bottleneck in the sequence of operations involved in the production of seamless tubing. In contrast, with the method and apparatus of the invention, the plug mill can easily operate at a greater rate of speed than the piercing mill supplying tubular shells to it. This is accomplished with only a modest increase in investment in mill equipment.
    • 本公开涉及在无缝管的生产中用于塞式磨机的操作的方法和装置。 规定了保持塞子和心轴组件的循环供应,使得在来自穿孔机的管状壳体已经被首次通过塞子磨机之后,塞子和心轴组件的整个组合以及刚加工的 壳体被转移到与第二级磨机的轴线对准。 然后,壳体沿着相同的方向通过第二轧机机架在第二个插头上前进,同时从第一心轴剥离。 通过使壳体能够通过第二塞子球磨机,而不需要从第一级心轴将壳体剥离的中间操作,实现了显着的时间经济。 使用传统的塞子磨机设备和技术,塞子磨机代表无缝管生产中所涉及的操作顺序的瓶颈。 相比之下,利用本发明的方法和装置,塞式磨机可以以比提供管状壳体的穿孔机更快的速度操作。 这是通过对轧机设备投资的适度增加来实现的。
    • 7. 发明授权
    • Method of producing seamless pipes utilizing a plug rolling procedure
    • 使用塞子滚动方法生产无缝管的方法
    • US5412974A
    • 1995-05-09
    • US49059
    • 1993-04-16
    • Karl H. Hausler
    • Karl H. Hausler
    • B21B17/12B21B17/06
    • B21B17/12
    • A method of producing seamless pipes by carrying out a plug rolling procedure includes expanding and stretching a hollow ingot into a bloom by carrying out at least two consecutive passes in a roll stand having a box-groove and by using a stationary plug supported by a rod. The bloom is pulled after each pass from the rod in a direction opposite the rolling direction. The bloom is turned after each pass by 90.degree. C. about a longitudinal axis thereof and the plug is exchanged after each pass. The method further includes the step of adjusting in one of the passes a wall thickness of the bloom in a wall portion of the bloom at the groove bottom by changing the roll distance in order to thin-stretching the wall portion such that the wall thickness of the finish-rolled bloom is uniform over the circumference thereof.
    • 通过执行塞子滚动方法来生产无缝管的方法包括通过在具有箱形槽的辊架中执行至少两次连续的通过并且通过使用由杆支撑的固定塞子来将中空锭膨胀和拉伸成花纹 。 在从轧杆方向与轧制方向相反的方向进行每次轧制后,才能拉开。 在每次通过90°C后,在其纵轴上转动花纹,并且在每次通过之后更换插头。 所述方法还包括以下步骤:通过改变所述辊距离来在所述通道中调整所述花纹在槽底部的壁部分中的壁厚,以使所述壁部分的薄壁拉伸, 最终轧制的花纹在其圆周上是均匀的。
    • 9. 发明授权
    • Shellpusher for plug mill or the like
    • 拔丝机等的挤出机
    • US4037453A
    • 1977-07-26
    • US682917
    • 1976-05-04
    • Robert A. RemnerLeroy V. Rowland
    • Robert A. RemnerLeroy V. Rowland
    • B21B23/00B21B17/12B21B39/06
    • B21B17/12
    • The disclosure relates to a novel and improved arrangement of shell pusher for feeding tubular shells into a plug mill. The pusher comprises a ram carriage, which is movably positioned on an elongated carriage track on the upstream side of the plug mill. The ram stroke capacity of the carriage is designed to be relatively minimum, sufficient to advance a shell from a predetermined load position, directly in front of the mill, until the leading edge of the shell is drivingly engaged by the working rolls of the mill. Means in the form of a heavy, elongated rack and pinion arrangement are provided for pre-positioning the ram carriage in advance of each loading operation of a new shell and also in advance of the return of that shell from the downstream side to the upstream side of the mill after each pass. By designing the ram carriage for minimum stroke capacity, the carriage and its ram may be of minimum size and mass, such that the working strokes of the pusher ram may be carried out at a high rate of speed in relation to the size of the equipment and the power requirements of the drive systems therefor. The ram carriage incorporates a hydraulic shock absorber system, which is arranged to controllably decelerate, and dissipate the kinetic energy of, a tubular shell being returned at high speed from the downstream side of the plug mill after a working pass. This enables the shell return operation to be carried out at increased speeds while avoiding excessive distortion of the upstream end of the tube shell, which might otherwise result from high speed impact of the shell against the ram head of the pusher.
    • 本发明涉及一种用于将管状壳体输送到塞式磨机中的壳体推动器的新颖且改进的布置。 推动器包括柱塞滑架,其可动地定位在插塞式铣刀的上游侧的细长滑架轨道上。 滑架的冲程冲程容量被设计成相对最小,足以使壳从预定的载荷位置直接在研磨机的前方推进,直到壳体的前缘被研磨机的工作辊驱动地接合。 提供形式为沉重细长的齿条和小齿轮装置的装置,用于在新壳体的每次装载操作之前以及在将壳体从下游侧返回到上游侧之前预先定位柱塞滑架 的磨坊。 通过设计用于最小冲程能力的冲头滑架,滑架及其冲头可以具有最小尺寸和质量,使得推动压头的工作冲程可以以相对于设备尺寸的高速度进行 以及其驱动系统的功率要求。 压头滑架包括液压减震器系统,其被设置成可控制地减速并消散在工作通过之后从塞子磨机的下游侧以高速返回的管状壳体的动能。 这使得能够以增加的速度执行壳体返回操作,同时避免管壳的上游端的过度变形,否则可能由于壳体抵靠推动器的压头头部的高速冲击而引起。