Abstract:
A modular rolling mill has a mill pass line along which products roll. The rolling mill comprises first gear units arranged along a first line parallel to the mill pass line. Each first gear unit is driven individually by a motor and has a pair of mechanically interconnected first shafts. Second gear units are arranged along a second line between and parallel to the first line and the mill pass line. Each second gear unit has a pair of mechanically interconnected second shafts. Rolling units are arranged along the mill pass line, which are driven by an input shaft and has a pair of roll shafts carrying work rolls. First couplings connect the first shafts of each first gear unit to second shafts of two successive gear units, and second couplings releasable connect the second shafts of the second gear units to the input shafts of two successive rolling units.
Abstract:
A feed product is rolled into different sized finished products in a rolling mill finishing section which comprises a plurality of modular rolling units arranged along the mill pass line. Each rolling unit includes two roll stands with work rolls configured to define successive oval and round roll passes. The roll stands are designed to effect specific area reductions on products rolled through their respective oval and round roll passes. Feed products having the same entry size are rolled into finished products having different reduced sizes by providing altered rolling sequences in which a selected rolling unit is replaced along the pass line with rolling units having roll stands designed to effect area reductions that differ from those of the roll stands of the replaced rolling unit. Rolling units downstream from the replaced rolling unit are removed from the pass line. The roll stands of rolling units upstream from the replaced rolling unit remain unchanged.
Abstract:
A modular rolling mill comprises a plurality of rolling units having work rolls configured and arranged to progressively reduce the cross sectional area of a product received along a mill pass line. Gear units are mechanically coupled to each rolling unit, with each gear unit in turn being mechanically coupled to a driven line shaft by first bevel gear sets. The ratios of the first bevel gear sets progressively increase from the first to the last of the gear units to thereby accommodate a progressively increasing speed of the product being rolled. A second bevel gear set is associated with the last gear unit. The ratio of the second bevel gear set is the same as the ratio of the first level gear set of the penultimate gear unit. The line shaft is selectively coupled to the last gear unit via one or the other of its first and second bevel gear sets.
Abstract:
A method is disclosed for controlling the speed of a curved rotatably driven laying pipe through which a longitudinally moving product is directed to exit from the delivery end of the pipe as a helical formation of rings. The method comprises determining the maximum and minimum internal radii Rmax, Rmin of the pipe at the location of the maximum radius R of the pipe as measured from its rotational axis; continuously measuring the velocity Vp of the product entering the laying pipe; and, controlling the rotational speed of the laying pipe such that the rotational velocities Vmax, Vmin of the pipe at said maximum and minimum internal radii bracket a range containing the velocity Vp of the product.
Abstract translation:公开了一种用于控制弯曲的可旋转驱动铺设管的速度的方法,通过该方法纵向移动的产品作为环的螺旋形成被引导从管的输送端排出。 该方法包括从其旋转轴线测量的管道的最大半径R的位置处确定管道的最大和最小内部半径R最小值,R min min SUB; 连续地测量进入敷设管的产品的速度V P p P SUB; 并且控制铺设管的旋转速度,使得在所述最大和最小内半径支架处的管的旋转速度V max,V min min包含包含速度 产品的P SUB>。
Abstract:
A billet is initially rolled into a process section having at least first and second segments joined by an intermediate web, with the cross-sectional area of the second segment being larger than that of the first segment. The intermediate web is slit to separate the first and second segments, and the thus separated segments are simultaneously rolled into finished products having different cross-sectional areas.
Abstract:
A method and system are disclosed for receiving a hot rolled bar product from a rolling mill, and for delivering the bar product to a cooling bed. A shear subdivides the bar product into bar segments and alternately directs the bar segments to one or the other of two downstream intermediate paths for continued travel thereon. A switch on each of said intermediate paths alternately directs bar segments traveling thereon to one or the other of two respective downstream delivery paths for continued travel thereon to the cooling bed. Decelerators slow the bar segments traveling along the delivery paths.
Abstract:
Round bars are successively rolled through first and second roll passes. Each roll pass is defined by a pair of work rolls having cylindrical rolling surfaces with notches therein extending transversely and obliquely with respect to the rolling line, and with the roll axes defining the second roll pass being offset at 90 with respect to the roll axes defining the first roll pass. The first pair of work rolls is arranged to configure the round bar into an intermediate process section having flat parallel first sides with first ribs protruding therefrom, and the second pair of work rolls is arranged to reconfigure the process section into a finished concrete reinforcing element having flat parallel sides which are perpendicular to the first parallel sides and which have second ribs protruding therefrom.
Abstract:
An apparatus for receiving a continuous series of rings of a hot rolled product includes: a) a portable container having: i) a vertically disposed cylindrical side wall open at its upper and lower ends; ii) a base at the lower end of the side wall configured to removably locate the container at a coil forming station; iii) a horizontal shelf projecting inwardly from the interior of the side wall; and iv) a central core supported by the shelf, the core being spaced inwardly from the interior of the side wall to define an annular chamber therebetween, the shelf having access openings therein communicating with the chamber; b) an elevator platform at the coil forming station having support members configured and arranged to pass through the access openings in the shelf; and c) a mechanism for vertically adjusting the elevator platform to move its support members through the access openings in the shelf between raised operative positions at which the support members project into the annular chamber to support a coil therein by the receipt of said rings through open upper end of the container, and an inoperative position beneath the shelf, resulting in the coil being deposited on the shelf.
Abstract:
In a rolling mill where hot rolled steel rod is directed along a delivery path to a laying head which forms the rod into a continuous series of rings, and the rings are deposited in an overlapping pattern on a conveyor for transport along a continuation of the delivery path to a reforming station, the improvement comprising mounting the laying head on an underlying support structure in a manner accommodating a horizontal shifting of the direction of deposit of rings on the conveyor. Clamps releaseably secure the laying head on the support structure at any selected position of adjustment.
Abstract:
A billet is rolled in a rolling mill into a first process section in a succession of roll stands arranged along a first pass line. The first process section is either delivered as a finished product to a cooling bed or alternatively slit into second and third process sections which are subjected respectively to additional rolling in finishing blocks arranged on second and third pass lines parallel to the first pass line. At least one of the finishing blocks is shiftable onto the first pass line in order to subject the first process section to additional rolling prior to delivering it to the cooling bed.