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公开(公告)号：US4430875A
公开(公告)日：1984-02-14
申请号：US276023
申请日：1981-06-22
CPC分类号： B21B17/14
摘要： In a method of rolling tubes in a stretch-reducing rolling mill having a group drive in which the elongation, and therefore the tension is increased by increasing the speed of an auxiliary drive motor relative to that of a main drive motor, the length of the trailing "thickened end", which must be rejected as scrap, is reduced by increasing the elongation from the point in time at which the start of the trailing end portion of the tube reaches the last stand. This trailing end portion is that portion which receives a larger wall thickness than the central portion of the tube as a result of the reduced tension exerted in the trailing end portion of prior art practices. The start of this trailing end portion can be predicted from experience or by rolling a sample tube without subjecting its trailing end portion to the said increased elongation and measuring the wall thickness at the trailing end portion of the sample tube.
摘要翻译： 在具有通过增加辅助驱动电动机相对于主驱动电动机的速度而延长并因此增加张力的组驱动的拉伸还原轧机中的轧管方法中， 必须以废料的形式排出的尾部“增厚端”通过从管的后端部的起始到达最后的台架的时间点增加伸长率来减小。 该后端部分是由于施加在现有技术的后端部分的张力减小而接收比管的中心部分更大的壁厚的部分。 可以根据经验或通过滚动样品管而不使其尾端部分经受所述增加的伸长率并测量样品管的后端部分的壁厚来预测该后端部分的开始。
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公开(公告)号：US4000637A
公开(公告)日：1977-01-04
申请号：US677662
申请日：1976-04-16
CPC分类号： B21B35/025
摘要： A stretch-reducing rolling mill is provided for selectively producing tubes of circular or angular configuration, such as a square, is provided in the form of a plurality of driven roll stands arranged in two groups, one at the entrance end being equipped with three roller stands and a second at the rear or exit end being arranged to use either three or four roller stands optionally, said first group of stands being driven by a common drive train separate and independent of the drive for the second group.
摘要翻译： 提供了一种用于选择性地生产圆形或角形构造的管的拉伸减小轧机，例如方形，以多个从动辊架的形式设置成两组，一个在入口端设有三个辊 立柱和后端或出口端的第二组被布置为可选地使用三个或四个辊架，所述第一组支架由与第二组的驱动器分离且独立的公共传动系驱动。
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公开(公告)号：US4512173A
公开(公告)日：1985-04-23
申请号：US512472
申请日：1983-07-11
申请人： Hans Brauer , Hans-Dieter Gerhards
发明人： Hans Brauer , Hans-Dieter Gerhards
CPC分类号： B21C45/00
摘要： The invention concerns a tube release roll mill with four or more driven rolls, which in pairs form a pass opening. The diagonally positioned identically constructed rolls have an enlarged working surface width. A certain roll pair spacing is also provided, as well as an enlarged angle of attack of the rolls, which together result in the wall thickness of the tube bloom being more uniform, the development of fewer surface defects, and a quieter operation of the roll mill.
摘要翻译： 本发明涉及具有四个或更多个从动辊的管释放辊磨机，成对地形成通过开口。 对角定位的相同构造的辊具有扩大的工作表面宽度。 还提供了一定的辊对间距，以及辊的增大的迎角，这些辊一起导致管坯的壁厚更均匀，更少的表面缺陷的发展以及辊的更安静的操作 磨。
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公开(公告)号：US4718280A
公开(公告)日：1988-01-12
申请号：US900753
申请日：1986-08-27
摘要： A rolling line for rolling tubular or rod-shaped material, in particular of reducing tubes, has a plurality of rolling stands disposed closely one after the other, as well as measuring rolls disposed upstream of and/or beyond the rolling stands and rolling on the material. In order to keep the distance between the measuring rolls and the first or last rolling stands as small as possible whatever the number of rolling stands used, and hence to ensure the longest possible use of the measuring rolls, said measuring rolls are disposed in measuring roll stands which fit into the reception pockets of the rolling stands which, like said rolling stands, can be displaced and disposed in or against the direction of rolling.
摘要翻译： 用于轧制管状或棒状材料，特别是还原管的轧制线具有多个紧邻地设置的轧制机架，以及设置在轧机机架的上游和/或超出轧机机架的轧辊， 材料。 为了使测量辊和第一台或最后一个轧机机架之间的距离尽可能小，无论使用多少个轧机机架，因此确保测量辊能够尽可能长的使用，所述测量辊设置在测量辊 与轧制机座一样，可以移动和布置在轧制方向上或与轧制方向相反的装配在轧机机座的接收槽中的机架。
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