Abstract: A roll stand has a stationary frame having a drive side and a service side, upper and lower working rolls having axially opposite ends at the sides, respective pairs of upper and lower journal blocks coupled with the ends of the rolls at the sides and a drive connected to the working-roll ends at the drive side for oppositely rotating the working rolls. Respective upper and lower pusher bodies are provided adjacent the journal blocks in the frame and respective upper and lower guides in the frame support the bodies for displacement of same only axially in the frame. Respective pairs of formations at least one of which is vertically elongated couple each of the bodies to the respective block for joint axial displacement while permitting relative vertical nonaxial displacement between the bodies and the respective blocks.

Abstract: The rolling mill for mechanical descaling of hot rolled steel is constructed according to the slidable roll process with reducing rolls so that a unform operation with different and/or changing shape steel strips can obtained. This is attained when the rolling mill has at least two rolls slidable in opposite directions whose body surfaces are constructed with S-shape contours positioned inversely to each other so that these contours compliment each other flawlessly in one certain axial relative position. When sliding the rolls in opposite directions in one case the contour is decreased in the center region of the steel strip and when slid in the opposite directions in the other case the contour is increased in the center region. Thus the rolls can be adjusted to fit a gently convex steel strip profile by axially sliding the rolls in opposite directions as also rolled strips with a thickness centrally reduced in comparison to that of the edge regions can by appropriate sliding of the rolls opposite each other.

Abstract: A hot rolling method using a hot finishing mill including a pair of work rolls each having a taper ground end at one end of its barrel and arranged one above the other with the taper ground ends being on opposite sides so as to locate both edges of a plate-like material to be rolled in respective zones of the taper ground ends. Work rolls are cyclically shifted in their axial direction within a range so as not to permit the both edges of the material to come out of the taper ground ends of the work rolls, thereby preventing edge built-ups of the material and simultaneously effecting crown-controlling of the rolled material. The work rolls are finely shifted and simultaneously a bending action is applied to the work rolls in a manner to eliminate a bending action acting upon the work rolls caused by the material being rolled by the work rolls.

Abstract: To fix the relative axial position of a roll of a rolling mill and particularly with rolls of an unsymmetrical shape to improve the maintenance of tolerances for flange thicknesses of rolled sections at least one roll is provided with a double acting hydraulic cylinder for axial positioning by which the axial position is held fixed by an actual value-set value comparison by a control device. The actual value measurement of the axial position during a pass in which the rolls have changing axial forces should occur as close as possible to the rolled section for elimination of the position shifts due to compressibility or flexibility of components.

Abstract: A rolling mill stand includes a pair of spaced apart housings each defining a window having a pair of blocks projecting therein from opposite sides of the housing. A pair of horizontal work rolls are arranged one above the other and are supported in bearing chock assemblies located in the housing windows. The rolls are displaceable in the direction of their length. Roll bending forces may be applied at the ends of the rolls by hydraulic rams acting vertically between the blocks and the bearing chock assemblies. The outer end of each ram, where it engages the bearing chock assembly, includes a body which is rotatably mounted on the ram and permits relative movement between the ram and the bearing chock assembly when the rolls are displaced in the direction of their length.

Abstract: In a multi-roll rolling stand having two intermediate rolls 3 to 6, which each have only one tapered roll barrel end, in each case two tapered roll barrel ends lie on each side of the rolling stand. The intermediate rolls 3, 4 and 5, 6, the two roll barrel ends of which lie on the same side of the rolling stand, are independently displaceable in an axial direction. Due to the axial offset of the tapered roll barrel ends which can be achieved in this manner, the support curve of the work rolls 1, 2 in the edge regions of the rolled strip can be finely adjusted. In addition, the support curve in the center region of the strip can also be adjusted if in each case one of the two work rolls 3, 4 associated with each work roll 1, 2 is contoured.

Abstract: The stand-supported bending device for the axially slidable rolls of a rolling mill comprises at least one bending cylinder whose piston acts on a mount of a slidable roll provided with an intermediate piece guided tilt-free in a supporting block covering one or more of the pistons. The intermediate piece is provided with a mount facing planar pressing surface. Since the opposing pressing surface is located on the mount, e.g. on laterally extending engaging lugs of the mount, symmetric to the transverse central plane of a radial bearing of the mount, the bending force acts continuously on this mount in this central plane whose lateral relative position the mount of the axially slidable rolls may take relative to the bending device. The tilt-free guiding which absorbs the tilting torque or moment of the intermediate piece can be improved by a mechanical or hydraulic synchronizing device. Then the pistons are no longer exposed to transverse forces due to the axial sliding of rolls and/or their mounts.

Abstract: During operation of a rolling mill the roll gap and roll shape change, because of the influence of heat, bending of the working rolls or the roll mounting, wear and the like, and must be compensated and/or balanced to make a planar product, particularly a planar rolled sheet or strip. To compensate for these undesirable disadvantageous influences on the operation of the rolling mill frequent axial sliding of the rolls with respect to each other and/or positioning of the working rolls transverse to the plane of the rolled material is required. These undesirable influences are prevented in a particularly simple way and/or are compensated when the contours of the rolls in the initial state and/or unloaded state of the rolling mill are such that the sum of the roll body diameters at each relative axial position of the rolls varies axially from a constant value.

Abstract: The rolling mill or roll stand which makes a rolled product, particularly a rolled strip or strip, comprises a pair of working rolls, which if necessary are supported on a pair of supporting rolls or on a pair of the supporting rolls and intermediate rolls, and in which the working rolls and/or the supporting rolls and/or the intermediate rolls are axially slidable relative to each other. Each of the rolls of at least one of the pairs of rolls is provided with a curved contour extending to the roll body ends. These curved contours, sometimes on opposite sides, extend over only a portion of the rolled product width. The curved contour extends over the entire roll body length of each roll and has a shape such that both roll body contours entirely compliment themselves in a certain relative axial position.

Abstract: A device for axial displacement for a roll in a rolling stand. The roll is mounted in a chock which is guided in a roll housing. The chock is adjustably guided in the rolling stand. The roll is axially displaced by a hydraulic piston-cylinder assemblies acting on the rolling stand and connected to the support member of the roll bearing. The roll bearing is axially slidingly guided in the chock. The chock has a guide for a sliding carriage which is provided with a coupling device for the roll neck. The hydraulic piston-cylinder assemblies are articulated to this sliding carriage.

Abstract: The rolling mill has two working rolls and at least two supporting rolls. At least both rolls of one roll pair are axially slidable opposing each other and each of the oppositely slidable rolls has a curved contour extending over its entire length which is convex over one longitudinal half segment and concave over the other longitudinal half segment. The contours of both rolls of these roll pairs complement each other continuously in one definite axial position. So that the occurence of increased load points and moreover as a result increased pressure at the contacting positions of the working rolls and the supporting rolls is prevented, the curved contour of the roll body at the free end of the concave longitudinal segment of the roll body extends to the body edges in an at least partially cylindrical longitudinal segment.

Abstract: Actuator device for axially shifting rolls which can be powered rolls journaled by way of radial bearings in holding elements in a rolling mill frame, uses hydraulic cylinders. At the drive side, the journal portions of the working rolls are respectively stepped to provide a centering roll portion, onto which respectively, an axial bearing is mounted to be positively held in position. At the housing of this bearing is attached a hydraulic cylinder which carries out the adjustment/control operation. The respective locking after mounting a new roll, for example, is achieved by a spindle head which is slipped on and which transmits the motive power of a driving spindle by way of the locking function performed by this spindle.

Abstract: A method of controlling the profile of a sheet material while it is rolled between upper and lower working rolls that can be shifted axially and in opposite directions. The profile of each working roll that varies during the time interval between one changing of the working rolls and another is determined. On the basis of the determined roll profiles, the relationship between the amounts of shifting in the roll position and the configuration of the gap between the upper and lower rolls in the axial direction is determined, so as to determine the amount of shift in the roll position that will provide the smoothest possible configuration for the gap in the axial direction within the area of contact between the work and the working rolls. The upper and lower rolls are shifted axially in accordance with the determination of how to provide the smoothest possible configuration for the gap between rollers.

Abstract: A rolling mill with axially movable rolls, comprising a supporting frame (4), at least two working rolls (1, 1') and at least two back-up rolls (2, 2'), at least one of the working rolls (1) being associated with means (42) for moving the roll (1) along its axis (10) and, for each chock (3), with two symmetrical sets of at least two bending jacks (6, 66). The offset of the roll (1) in relation to a centering position is measured continuously, and the pressure exerted by each bending jack (6) is adjusted at each moment as a function of the offset measured and of the position at the same moment of the particular jack (6) in relation to the mid-plane (P5) of a bearing (12), such that the resultant of the bending forces exerted by all the jacks (6, 66) remains directed at each moment in the mid-plane (P5) of the bearing (12), the bending jacks bearing on the chocks by sliding faces.

Abstract: A working roll shift type rolling mill has a housing including upper and lower working rolls having working roll chocks, and upper and lower reinforcing rolls having reinforcing roll chocks. Hydraulic rams mounted between the upper and lower working roll chocks apply a vertical force to the vertically facing portions of the respective chocks. The working roll chocks are immovably mounted on their respective working rolls so that they can be moved together. Each of the hydraulic rams has one end mounted in one of the upper or lower working roll chocks and the other end engaging the horizontal wall surfaces of the upper and lower working roll chocks that are vertically adjacent to each other. The working roll chocks and reinforcing roll chocks have flat side surfaces. The housing of the rolling mill includes windows each having a flat side wall such that the working roll chocks and the reinforcing roll chocks may be lifted and lowered within the housing.

Abstract: A method and an apparatus for rolling metal strips by a tandem cold rolling mill. The strip is periodically swung in its width directions at a location upstream of the tandem rolling mill, to bring the strip into contact with rolls of the tandem cold rolling mill over areas of the rolls as widely as possible, thereby preventing irregular wears of the rolls to make it possible to produce defect-free metal strips.

Abstract: The rolls of a rolling mill can be axially moved by way of an actuator device equipped with piston-and-cylinder units. The bearing blocks which receive the journal ends of the rolls to be moved are horizontally guided in separate guide bodies. The guide bodies, in turn can be shifted vertically in cylinder blocks arranged at the flanks of the windows of the respective base member, or in pressure plates associated with such cylinder blocks. The actuator device is characterized by a compact design which even during exchange of rolls is contained in the confines of the roll stand, and it can be easily coupled to the rolls to be moved. The guide bodies of at least one base member are formed with lateral projections at which are mounted the motive power providing hydraulic cylinders, and these are connected in such a way that the piston rods thereof point in the direction of the guide bodies.

Abstract: The rolls of a rolling mill, especially the working rolls, are horizontally shifted by a compact adjusting device, with use being made, as required, of guide pieces. The device is readily arranged in cylinder blocks, and the movements of the device can be easily monitored, transmitted, and set. The predetermined motions are carried out in rigidly controlled manner and no elastic yielding is allowed because of pressure plates extending in the windows of the base frame members. The pressure plates can be horizontally aligned and they cooperate with the holding elements which are to be shifted. The pressure plates are supported by wedges which can be shifted horizontally and transversely with respect to the plane of the frame, by way of pressure posts which operatively engage the pressure plates.

Abstract: A rolling mill has a pair of cooperating work rolls with first and second chock pairs associated with each work roll. At least one work roll is rocked in a direction generally perpendicular to the longitudinal axis of the work roll during operation of the rolling mill to enhance shear rolling and create regions of irregular thickness in the workpiece. This reduces friction between the work rolls and the workpiece in subsequent rolling thereby permitting greater lateral spread of the workpiece. The rocking may be effected in a generally vertical direction by a pair of cylinders secured to a pair of chocks or may be effected in a generally horizontal direction which may be that of the path of flow of the workpiece through the rolling mill by pairs of cylinders associated with each work roll or may involve rocking in both directions.

Abstract: A metal workpiece such as a slab is rolled into a desired width without requiring broadsiding. The system generally involves reducing a first portion along the width of the workpiece to a first thickness while creating a second portion along the width of the workpiece having a thickness greater than the first portion thickness and having a predetermined mass. Subsequently the second portion is reduced to establish a predetermined increase in the width of the workpiece and a decrease in the thickness of the workpiece to obtain a substantially uniform thickness along substantially the entire width of the workpiece. A preferred approach includes providing a pair of cooperating work rolls at least one of which has a generally cylindrical portion and at least one adjacent tapered portion. Initial reduction is effected by employing a pair of cooperating cylindrical central portions and at least one tapered portion. This provides a workpiece with a reduced portion and an enlarged portion.

Abstract: A rolling mill has upper and lower rolls with axes which cross each other. These two rolls are pivoted at ends diametrically opposite to each other. Only rolls chocks mounted at the non-pivoted ends of the rolls are allowed to be hydraulically moved the same distance in the same direction, i.e., the rolling direction or the reverse direction, in a symmetrical relation with respect to the center line of the rolling mill.

Abstract: A shape controlling method for controlling the shape of a sheet rolled in a rolling mill, with the shape pattern of the sheet being approximated by a formula of an order of a large number, in accordance with the detected shape signals. Asymmetrical fundamental component (component of the first order) is extracted from the approximating formula. The control with respect to the fundamental component is allotted to the rolling reduction function, while the controls relative to the higher order asymmetrical components are conducted by other final control element than the rolling reduction function. The asymmetrical fundamental component causes winding of the sheet during rolling. By controlling the fundamental component separately from other components, it is possible to improve the shape of the rolled product while avoiding winding of the product under rolling operation.

Abstract: A roll bending apparatus for use in a multi-stage rolling mill adapted for rolling a hard material or a thin sheet material with a high uniformity of thickness along the breadth, with a high degree of accuracy and low energy. The rolling mill has work rolls of a comparatively small diameter. The amount of bend of the small-diameter work roll is controlled by the roll bending apparatus for attaining the high degree of uniformity of thickness along the breadth of the rolled material. The roll bending apparatus has, for each of said work rolls, a supporting member having a work roll supporting portion for rotatably supporting the work roll and rockable vertically about a fulcrum, and a bending force generating means adapted for engaging the supporting member so as to cause a rocking motion of the supporting member thereby applying a substantially vertical roll bending force to the work roll through the supporting member.

Abstract: A roll stand has a frame, a pair of small-diameter and substantially parallel working rolls defining a workpiece nip, and respective journal blocks supporting the working rolls in the frame for rotation about substantially parallel axes flanking the nip. These working-roll journal blocks and the respective working rolls can be axially shifted in the frame and the working rolls can be bent positively and negatively, that is respectively convex and concave toward the workpiece. A pair of large-diameter and substantially parallel backup rolls flank and bear toward the nip on the working rolls. Respective journal blocks support the backup rolls in the frame for rotation about substantially parallel axes flanking and generally coplanar with the working-roll axes. A strip is passed repeatedly in a multipass run through the nip generally perpendicular to the plane while the working rolls are pressed against the workpiece to reduce its thickness.

Abstract: A rolling mill comprises a pair of crown work rolls each having, at both ends of a drum, tapered ends ground at different taper angles, respectively. The work rolls are located one above the other with one tapered end of one work roll being in opposition to one tapered end having a different taper angle of the other work roll. The work rolls are movable in axial directions, such that edges of the plates are rolled by one tapered end of one work roll and a drum of the other work roll, and between tapered ends of both the work rolls. The method and rolling mills are capable of controlling the crown and edge drop reduction and simultaneously preventing local protrusions such as high spots and edge built-up to produce flat rolled plates having no difference in thickness and further capable of controlling the crown and the edge drop according to the material, thickness and width of the plates.

Abstract: A roll stand having a roll centered on an axis and provided at one end with a journal block is provided with a roll-shifting apparatus which comprises an outer frame fixed relative to the stand at the journal block, a pair of arms extending parallel to one another and having outer ends pivoted on the outer frame at a common arm axis generally perpendicular to the roll axis and inner arms adjacent the block, and actuators engaged between the inner arm ends and the outer frame for vertically displacing the inner arm ends with pivoting of the arms about the arm axis to a position with the inner arm ends generally level with the journal block. An inner frame slides perpendicular to the arm axis on the arms and carries a grab mount pivotal about an inner axis parallel to the arm axis. A grab carried on the mount is axially couplable with the journal block.

Abstract: A rolling mill arrangement having at least one roll carrying a sleeve forming a cavity with the roll body near the two opposed ends of the roll. Pressurized fluid is regulated in these cavities to counteract "edge drop" which occurs at the edges of a product under the conventional procedures for controlling the mill for effecting control of the edge thickness of the strip when reducing the product along its width.

Abstract: A roll stand has a frame, a pair of small-diameter and substantially parallel working rolls defining a workpiece nip, and respective journal blocks supporting the working rolls in the frame for rotation about substantially parallel axes flanking the nip. These working-roll journal blocks and the respective working rolls can be axially shifted in the frame and the working rolls can be bent positively and negatively, that is respectively convex and concave toward the workpiece. A pair of large-diameter and substantially parallel backup rolls flank and bear toward the nip on the working rolls. Respective journal blocks support the backup rolls in the frame for rotation about substantially parallel axes flanking and generally coplanar with the working-roll axes. A strip is passed repeatedly in a multipass run through the nip generally perpendicular to the plane while the working rolls are pressed against the workpiece to reduce its thickness.

Abstract: A rolling mill stand has a pair of work rolls and a pair of associated backup rolls. The backup rolls are generally cylindrical with portions of varying diameter. The work rolls are generally cylindrical with portions of varying diameter and of different work surface configurations from each other. The work rolls may assume a first position generally aligned with the backup rolls and second and third positions in which the work rolls are axially displaced as a unit in the same direction from the aligned positions with the backup rolls. This permits forming of flat strip, centrally crowned strip, or strip with crowned edges. The work rolls preferably diverge in the same direction and the backup rolls preferably diverge in the opposite direction. A method of achieving a generally flat strip, centrally crowned strip or edge crown strip employing relative axial displacement of work rolls with respect to the backup rolls.

Abstract: A rolling stand has a support frame, a pair of small-diameter working rolls defining a workpiece nip open perpendicular to the plane and rotatable about respective horizontal, parallel, and vertically spaced axes. A pair of large-diameter backup rolls are rotatable about respective axes parallel to and vertically flanking the working-roll axes. These backup-roll axes define a vertical plane offset from the working-roll plane. In addition each backup roll bears vertically on the respective working roll and a drive counterrotates the rolls of each roll pair to draw an elongated workpiece of predetermined maximum width generally perpendicular to the planes through the nip. The working rolls are longer than the maximum workpiece width and have end portions projecting axially beyond the workpiece. The rolls are pressed vertically toward the nip to compress and deform the workpiece thereat.

Abstract: A roll stand has a support frame, a pair of similar small-diameter working rolls rotatable about respective vertically spaced axes and defining a workpiece nip receiving a workpiece to be rolled, and a pair of similar large-diameter backup rolls rotatable about respective axes vertically flanking the working-roll axes and each bearing vertically on the respective working roll. These working rolls have ends and each have therebetween an effective axial length equal to at least 1.3 times the effective axial length of the respective backup rolls. Actuators are connected to the working rolls for displacing same axially relative to the backup rolls through an axial distance equal to about their own effective axial lengths between end positions each engaging only about half of the respective backup roll. A selector feeds to and through the stand a group of strips comprised generally of pairs of strips wherein the combined width of the strips of each pair is generally equal to the working-roll width.

Abstract: A roll stand comprises a plurality of axially shiftable working rolls, each attached by supporting members axially slidably to a guide member which is movable vertically adjustably against the side of a cylinder block installed in the roll stand housing. Axially shifting hydraulic cylinders are provided to axially shift the working rolls by acting on the guide pieces. In particular a plurality of balancing hydraulic cylinders are installed in laterally projecting shoulders in the cylinder blocks behind each other in the axial shifting direction of the rolls and act on the working rolls to provide balancing and bending forces. In order to install only cylinder blocks of reduced size, the balancing hydraulic cylinders operating downwardly and the balancing hydraulic cylinders taken individually along the axial shifting direction project alternately downward and upward from the shoulder of the cylinder block associated with them and act on the guide pieces on which the working rolls are mounted.

Abstract: A deforming tool having two members of which one is made as a cylindrical roll, whereas the working surface of the other member is made curvilinear. A rod of microwire is fed into a gap between their working surfaces. A rotation drive and a drive for a reciprocating movement are mechanically coupled with the cylindrical roll.

Abstract: A pair of work rolls is provided in a strip mill of the type having one or more back-up rolls for each work roll. Each work roll comprises a tubular body having an axial bore of uniform diameter throughout its length. The exterior surface of the tubular body has a cylindrical roll face of uniform diameter, terminating at its ends in neck portions of lesser diameter. The ends of the body are closed by removable fluid-tight plugs. A cylindrical mandrel of the same length as the roll face is mounted in the bore of each work roll and normally has an interference fit therein. The mandrels of the upper and lower work rolls are relieved at opposite ends. The remainder of the work roll bore at either end of the mandrel defines a pair of volumes in each work roll, filled with hydraulic fluid and individually controllable as to hydraulic pressure. When a strip is to be rolled, the mandrel of each roll is shifted to align its relief with one of the strip edges.

Abstract: The invention relates to an improved device for moving and axially adjusting horizontal rolls of a section for rolling mill stand, comprising an axial thrust bearing mounted in the envelope of a casing blocked on an element of the stand, a sleeve mounted for axial slide and fast with the outer race of the bearing, the sleeve being blocked in rotation in the envelope of the casing; a screw mechanism for adjusting the position of the sleeve with respect to the envelope of the casing comprising a thread on an outer part of the sleeve on which are screwed two pinion-nuts, two end stops formed on the casing, two shafted pinions pivoting in the casing each contiguous with a stop and meshing with a respective pinion-nut, the two pinion-nuts being provided on their opposite face with a dog-clutch. The shafted pinions may be controlled by motors having reversible rotation, and associated with pulse counters.

Abstract: A method for controlling flatness in cold-rolling mills having a roll stand with at least six rolls including intermediate and working rolls capable of being deflected, includes measuring tensile stress distribution over the width of a strip to be rolled having central and edge regions, comparing the measured tensile stress distribution with a desired predeterminable tensile stress distribution, determining a deviation at the central region of the strip between the measured and desired tensile stress distribution, determining a deviation at the edge region of the strip between the measured and desired tensile stress distribution, forming a strip center coefficient from the central region deviation in the form of a deviation control for influencing deflection of the intermediate roll, and forming a strip edge coefficient from the edge region deviation in the form of a deviation control for influencing deflection of the working roll, and a circuit for carrying out the method.

Abstract: A cantilever type rolling mill having a pair of roll shafts rotatably supported in a roll housing on a roll stand, the rolling mill including a tension member provided axially through the center of a roll shaft and having the outer end thereof projecting out of the roll shaft; a roll unit holding a ring roll between a tapered sleeve engaging with one end face and inner periphery of the ring roll and a pressing washer engaging with the other end face of the ring roll; a roll compressing tool detachably engageable with the projecting end of the tension member and incorporating a hydraulic piston-cylinder, the roll compressing tool having a nut member threadedly fitted on the circumference thereof; a plurality of crown splines formed on the outer peripheries of the nut member and pressing washer; and an extraction ring having a crown spline on the inner periphery thereof and slidably and fixably engageable with the crown splines of the nut member and pressing washer.

Abstract: A rolling mill having an upper set of rolls which has a work roll and a backup roll, and a lower set of rolls which has a work roll and a backup roll. Two parallel intermediate rolls are arranged between the work roll and the backup roll of either upper set or lower set or both sets, each of the intermediate rolls being supported by corresponding support rolls. The support rolls can be shifted toward and away from the corresponding intermediate rolls.

Abstract: An apparatus for converting rod stock or wire rod into wire comprises heating of the rod stock or wire rod, high speed rolling and cooling thereof, and final slight drawing to make the surface thereof smooth and finished. The high speed rolling is carried out by a rolling mill having a lightweight construction and roll stands comprising three rolls at 120.degree. from one another. Two of the rolls are rotatably supported by shafts which have eccentrical ends. Two spindles having eccentrical ends engage with their ends corresponding seats in the ends of the shafts, so that rotation of the spindles provides rotation of the shafts and axial displacement thereof in order to adjust the rolling pass.

Abstract: A quick adjusting square wire or rectangular wire rolling mill comprising segmented work rolls and a connection between at least one segments on each roll for adjusting positions of said segments, and method of adjusting the roll pass of a square wire or rectangular wire rolling mill without replacing work rolls.

Abstract: A rolling mill comprises a pair of an upper and a lower work roll having a small diameter which is as large as about 0.15 to 0.30 times the width of a metal sheet article to be rolled, a pair of an upper and a lower back-up roll, a pair of an upper and a lower intermediate roll disposed intermediate between the work roll pair and the back-up roll pair, work roll bending units and intermediate roll bending units imparting bending forces to the roll ends of the upper and lower work rolls and/or the roll ends of the upper and lower intermediate rolls respectively, roll shifting units capable of shifting the upper and lower intermediate rolls in axial directions opposite to each other, and drive units coupled to the associated ends of the upper and lower intermediate rolls to rotate the upper and lower work rolls at different peripheral speeds through the intermediate rolls.

Abstract: A rolling stand comprises a housing defining a pair of parallel and spaced inner axes and a pair of parallel and spaced outer axes flanking the inner axes and defining therewith a plane. Respective inner rolls are journaled in the housing at the inner axes and have bodies axially symmetrical about the respective axes and having centered on the respective axes roll-body surfaces of noncylindrical shape and each formed by rotation of a continuously curved generatrix about the respective axis. One of the inner rolls is displaceable axially relative to the other inner roll from an end position to another position. The inner-roll surfaces are spaced in the plane in the other position at a uniform distance and in the plane in the end position at a nonuniform distance. Respective outer rolls journaled in the housing at the outer axes bear toward each other on the respective inner rolls.

Abstract: A rolling mill comprising a roll housing in which are mounted a pair of work rolls which can be bent by work roll benders and a pair of support rolls therefor which are displaceable relative to each other in their axial direction and are bent by support roll benders. To minimize the size of the window of the rolling mill housing while including a plurality of mechanisms such as roll benders and means for roll displacement, said support roll benders are disposed closer to the center plane of the rolling mill than the work roll benders.

Abstract: A rolling mill comprises working rolls, backup rolls, beams disposed along the rolls for supporting the working rolls, and supports mounted on the housing of the rolling mill for slidably supporting the beams. The beams have roll benders engaging with metal chocks of the working rolls and are moved axially by actuators that are disposed separately, so as to control the shape of a rolled material. The support has a central projection extending beyond the position of the roll bender and supporting symmetrically the bending force without providing a moment about the axis of the beam. The beam, further, is provided with apparatus inside for cooling the work rolls.

Abstract: Gauge control method and apparatus for a multi-roll type upright rolling mill includes displaceable rolls which are movable not only in a first direction in which a material to be rolled is compressed but also in the axial direction thereof or in a direction in which the axis of the displaceable roll is inclined at a variable angle relative to other rolls as viewed in a horizontal plane, the other rolls being movable in the first direction. Position of the displaceable rolls is detected, and in dependence on the displacement of the displaceable roll, coefficient of mill stiffness of the whole rolling mill and those among the individual rolls are arithmetically determined. A roll gap defined between the rolls serving for rolling work is arithmetically determined on the basis of the arithmetically determined coefficients of stiffness, rolling load, and roll bending forces applied to the individual rolls detected by respective detectors.

Abstract: A rod, bar or section mill has a train of rolling mill stands, each of which is attached to a bed plate with which the stand is introduced into, and withdrawn from, the mill. The bed plate carries pedestals on which are secured guides; those guides can be properly located on the bed plate prior to entry of the stand into the mill; on the stand being positioned in the mill, the guides are then automatically located relative to the pass-line and the down-time of the mill on stand replacement is reduced.

Abstract: The mill stand houses a pair of upper backup rolls and a pair of lower backup rolls between which pairs the upper and lower roll drive shafts are journalled. The overhung work rolls are affixed to the ends of the drive shafts. Apparatus is provided for automatically adjusting the work rolls longitudinally, for automatically adjusting the loading on the backup rolls and for maintaining the drive shafts parallel under load. An automatic gauge control system for making the above adjustments and capable of varying the mill stand modulus or spring continuously from a stiff or constant roll gap modulus to a soft or constant pressure modulus is also described.

Abstract: A rolling stand has a conventional housing defining a pair of parallel and spaced axes defining a plane. Respective rolls have roll ends journaled in the housing at the axes and roll bodies axially symmetrical about the respective axes and having centered on the respective axes complementary roll-body surfaces of noncylindrical shape and each formed by rotation of a continuously curved generatrix about the respective axis. One of these contoured rolls is displaceable axially relative to the other roll from an end position to another position, and the roll-body surfaces form at the plane in the other position a uniform nip and in the end position a nonuniform nip. This system is set up to be able to displace one of the rolls axially relative to the other of the rolls between the end position and the other position. These contoured rolls may themselves define the nip, or may engage and deform other rolls that define it.

Abstract: A rolling mill having at least a pair of work rolls (12, 13) each supported by a back-up roll (14, 15) has at least one roll (16) of hollow construction to give the mill compliance. The hollow roll (16) may contain an arbor (20) to give local stiffness to the roll as required by the shape of the material (17) entering the mill.

Abstract: A rolling mill has a pair of work rolls (12, 13), between which the work (14) is rolled and which are supported by respective back-up rolls (16, 15). Between one work roll (12) and its back-up roll (16) there are a pair of intermediate rolls (17, 18) which are axially adjustable relative to the other rolls.