Abstract: Sheet piling and like steel shapes are made in a caliber rolling mill having upper and lower rolls of suitable contour. One of the rolls is axially fixed and the other can be shifted axially in opposite directions so that shoulders of the rolls engage and these positions are stored along with a relationship of axial force and spring constants of the mill frame. The rolling then takes these stored values into consideration.

Abstract: There are disclosed a rolling mill capable of keeping a uniform plate thickness distribution and manufacturing a good-quality plate, and a rolling method. The rolling mill comprises working rolls movable in roll axis directions, profile-measuring means for measuring the profile of each of the working rolls, profile-estimating means for estimating the profile thereof, and a grinder for grinding each of the working rolls. The rolling mill also comprises instructing means for sending a command of grinding to the grinder at a time when the measured profile value or the estimated profile value regarding each of the working rolls reaches a given value.

Abstract: In a rolling method applied to a multi-roll strip rolling mill composed of not less than four rolls, one of the zero point of the roll positioning devices and the deformation characteristic of the strip rolling mill or alternatively both the zero point of the roll positioning devices and the deformation characteristic of the strip rolling mill are found from a measured value of the thrust counterforces in the axial direction of the roll acting on at least all the rolls except for the backup rolls in the kiss-roll tightening state and also from a measured value of the roll forces of the backup roll acting on the backup roll chocks of the top and the bottom backup roll in the vertival direction. According to the thus obtained zero point of the roll positioning devices or the deformation characteristic of the strip rolling mill, the setting and control of the roll forces is executed when rolling is carried out.

Abstract: Rolling stand (10) for plane products and method to control the planarity of said plane products, said rolling stand comprising a pair of working rolls (11a, 11b), a corresponding pair of back-up rolls (13a, 13b) and at least an intermediate roll (15a) located between one of said working rolls (11a) and a corresponding back-up roll (13b), axial translation means (16) and bending means (17) being associated with at least one of said working rolls (11a) to translate it axially and respectively bend it, crossing means (19) being associated with said intermediate roll (15a) to arrange it with its longitudinal axis (25a) inclined, that is, rotated, with respect to the longitudinal axes (21a, 21b, 23a, 23b) of said working rolls (11a, 11b) and of said back-up rolls (13a, 13b).

Abstract: Method to control the planarity of flat products rolled with a rolling stand (10) having a pair of working rolls (11a, 11b), a corresponding pair of back-up rolls (13a, 13b) and at least an intermediate roll (15a) placed between one of said working rolls (11a) and a corresponding back-up roll (13b), axial translation means (16) and first bending means (17) associated with at least one of said working rolls (11a) to translate it axially (WR shifting) and respectively bend it (WR bending), crossing means (19) associated with said intermediate roll (15a) to arrange it with its longitudinal axis (25a) inclined (IR crossing), that is, rotated on a horizontal plane, with respect to the longitudinal axes (21a, 21b, 23a, 23b) of said working rolls (11a, 11b) and of said back-up rolls (13a, 13b), and second bending means (20) associated with said intermediate roll (15a) to bend it with respect to the horizontal plane (IR bending), said method providing a first static setting step, operating selectively at least on WR

Abstract: Method to control the profile of a strip (13) in a rolling stand for strip and/or sheet comprising at least two working rolls, respectively upper (11a) and lower (11b) and defining a reference pass-line (15) substantially coinciding with the center line of said strip (13), said rolls (11a, 11b) defining between them a transit gap (12) through which said strip (13) passes and is rolled and being supported at the ends by respective chocks, said method providing the axial movement (shifting) of said working rolls (11a, 11b) with respect to said pass-line (15), said working rolls (11a, 11b) having a shaped surface profile (14) which can be expressed by a polynomial equation, said method providing to apply a first value (“s1”) of axial translation, or shifting, to said upper working roll (11a) and a second value (“s2”) of axial translation, or shifting, to said lower working roll (11b), s1 being ≠s2.

Abstract: A rolling mill stand having a pair of side shiftable rolls defining a roll gap profile therebetween varying along the length of the rolls according to a sixth order polynomial equation. The flatness of the strip exiting the rolling mill stand is controlled by determining the temperature profile of the rolls and adjusting the side shift positions of the rolls to compensate for the expansion of the rolls due to changes in the temperature of the rolls.

Abstract: A roll stand with multiple rolls for rolling strip-shaped rolling stock has a roll frame and upper and lower working rolls mounted on the roll frame in a common vertical roll axis plane, wherein the rolling stock is guided between the upper and lower working rolls forming a roll set. Upper and lower support roll insert parts are mounted on the roll frame. Two upper support rolls are mounted in the upper support roll insert parts and support the upper working roll, and two lower support rolls are mounted in the lower support roll insert parts and support the lower working roll. The two upper and the two lower support rolls are arranged symmetrically to the vertical roll axis plane, respectively. Working roll bending devices are mounted on the roll frame and act on the upper and lower working rolls. Balancing devices are mounted on the roll frame and advance and balance the upper and lower support rolls.

Abstract: A roll forming apparatus is provided having a plurality of roll forming stations arranged in an advancing path and having at least one roll forming station including adjustable top and bottom rolls. The adjustable forming rolls include separate inner and outer sections. The inner roll sections are adjustable transverse to the advancing path in order to shift the position of bend introduction to a workpiece. In a preferred embodiment, each inner roll section cooperates with a backing collar which has preset stops of different heights to quickly and precisely adjust the apparatus to predetermined settings. The apparatus is particularly useful for forming flanges on duct sections where duct sections having different flange heights are desired. The at least one adjustable roll forming station can be used to retrofit existing non-adjustable roll forming apparatus.

Abstract: A roller die apparatus for supporting pairs of roller dies in predetermined clearances for processing a web workpiece, and for varying the clearances between the dies to accommodate variations in the thickness of a web workpiece and having first and second roller dies rotatably mounted on respective roller die bearings, one of the first and second roller dies being moveable both upwardly and downwardly transversely to its axis of rotation, and being moveable axially along its axis of rotation, thereby achieving adjusting of the die clearance between the first and second roller dies in two planes. The two adjustments take place simultaneously so as to cause an adjustment movement in a diagonal direction, as between one die and the other in each pair.

Abstract: A bending block for a four-high rolling stand comprising working rolls (11a, 11b) and back-up rolls (12a, 12b) associated with respective chocks (14a, 14b; 15a, 15b), the stand also comprising a stationary housing (16) associated with means (17) for the crossing of the rolls, the working rolls (11a, 11b) being able to be translated axially. The crossing means (17) cooperating with the outer lateral faces of the chocks (14a, 14b) at least of the working rolls (11a, 11b) by means of intermediate plates to distribute the thrust.

Abstract: A roll for a roll stand including a roll shaft with at least one roll ring mounted on the roll shaft, wherein the roll shaft is axially displaceable. The roll stand for rolling a metal strip may be, for example, a two-high stand, a four-high stand or six-high stand. The surfaces of at least two of the inner roll components enclosed by an outer roll ring have contours which are curved in the axial direction, wherein the curved contours are turned relative to each other by 180°.

Abstract: A method for improving the contour of rolled material over at least one segment of a rolling schedule including a plurality of rolling processes. The method includes associating at least one quality criterion with at least one rolling stand of at least one of the plurality of rolling processes, optimizing the at least one quality criterion using a mathematical formula, predetermining at least one work roll shift for the plurality of rolling processes over the at least one segment of the rolling schedule based on an optimization of the at least one quality criterion, and axially shifting at least one work roll of the at least one rolling stand.

Abstract: A cluster type rolling mill comprises a pair of work rolls, intermediate rolls, backing rolls, backing roll chock movable in the up and down directions, intermediate roll chocks held by the backing roll chocks work roll chocks held by the intermediate roll chocks hydraulic cylinders for shifting the intermediate rolls in the axial direction and hydraulic cylinders for applying bending force to the intermediate rolls and work rolls.

Abstract: The method and apparatus of the present invention is a rolling mill having rolls with inverse symmetrical profiles and a method of using the same. An inverse symmetrical profile is a profile in which the right and left sides of a roll, with respect to the roll center line, have the profiles that are described by the same polynomial function but with opposite signs. A family of metal strip profiles can be created by the method and apparatus of the present invention wherein the family of strip profiles created prior to roll shifting are strip profiles expressed by polynomial functions having terms of the n.sup.th order, where n is preferably 1-5 inclusive, and the family of strip profiles produced by shifting at least one upper roll having an inverse symmetrical profile and at least one lower roll having an inverse symmetrical profile are strip profiles expressed by polynomial functions having terms of the (n-1).sup.th order, where n is preferably 1-5, inclusive.

Abstract: A description is given of a device for continuously rolling a sheet-metal strip into a profile with profile limbs of straight cross section, in particular for producing longitudinally welded rectangular tubes specifically with the aid of former rolls (13) which are arranged on both sides of a central plane (2) running in the longitudinal direction of the strip and are mounted in a separate frame (11, 12) in each case together with counter-rolls (14) which are aligned perpendicular to the central plane (2) and can be adjusted perpendicular to the central plane (2). In order to create advantageous design conditions, it is proposed that the frames (11, 12) are arranged on each side of the central plane (2) with the associated counter-rolls (14) respectively opposite the neighbouring frames (12, 11) on the opposite side of the central plane (2) in a fashion offset in the longitudinal direction of the strip.

Abstract: The invention relates to a rolling stand of the type with crossed rolls, for flat products, which comprises at least two working rolls opposed to one another. These rolls are angularly adjustable and such an adjustment is effected by rotating them about a vertical axis of the stand.Advantageously, the actuators which serve to maintain the working rolls at a predetermined distance from one another following to the thickness of the material to be rolled, are solid with the rotations of the rolls themselves: in this way the stresses which the rolls transmit to the actuators during rolling are independent of their angular adjustment and are therefore always balanced.

Abstract: A rolling mill, especially a hot flat-rolling mill, comprises a pair of working rolls which are supported either directly or via intermediate rolls on a pair of supporting rolls, the pair of working rolls being mutually axially displaceable. To permit far-reaching influencing and compensation of the bending of the rolls which occurs due to thermal cambering and under load, and of the roll gap changes which are produced thereby, and thus to achieve optimum profile control and flatness control of this rolling mill, each of the mutually axially displaceable working rolls comprises a hollow roll with a cavity designed to be rotationally symmetrical in relation to a longitudinal axis of the roll and asymmetrical in relation to an imaginary transverse plane inter-secting the longitudinal axis at a center of the roll crown. The first and second working rolls include identically designed cavities turned through 180.degree. with respect to each other.

Abstract: A forming stand for continuously forming a skelp material into a pipe, by pressure of spaced-apart forming rolls supported by spaced upper and lower shafts, the forming rolls having two portions, with one portion fixedly fitted on one side of its shaft, a sleeve slidably fitted to the other end of the shaft and fixedly secured to the sleeve and slidable with respect to the shaft; a bearing box for supporting one side of the associated shaft; a bearing box supporting the other side of the associated shaft through the sleeve; upper and lower stand supporting frames for supporting both of the bearing boxes to be movable in an axial direction; and supporting columns for supporting the stand supporting frames; the pipe-forming force is continuously measured and the forming operation is adjusted such that the measured value of pipe-forming force does not exceed a predetermined pipe-forming upper limit.

Abstract: A roll stand with work rolls supported by a back-up roll either directly or through an intermediate roll, particularly work rolls which are axially displaceable in opposite directions, wherein at least one of the rolls of the roll stand is constructed with varying resilience over the length thereof, particularly with a greater flattening behavior in at least a portion thereof. For this purpose, at least one of the rolls has in the area between the roll neck and the outer surface of the roll at least one notch extending concentrically about the axis.

Abstract: A straightening machine for rolled beams, particularly I-beams, wherein at least one of the two straightening disks which rest from the inside against the beam flanges and are supported by a straightening shaft is axially adjustable. One of the straightening disks is fixedly connected to the straightening shaft through a mounting sleeve, while the other straightening disk is fixedly positioned in accordance with its adjusting dimension on a sliding sleeve which is adjustably mounted on the sleeve. Optionally, the mounting sleeve can be coupled to the sliding sleeve, on the one hand, and the sliding sleeve can separately be coupled to a piston/cylinder unit, on the other hand.

Abstract: A system and method for extending work roll useful life and controlling workpiece profile during thickness gauge reduction of continuous metal strip by axially shifting rotating work rolls during rolling, applying work roll bending forces at locations for maximum leverage and enabling work roll dressing apparatus to be located such that detrimental strip processing conditions of the working zone are not encountering by the dressing apparatus; shortening of work roll length is made possible by the location of the dressing apparatus.

Abstract: A drive assembly for axially adjusting at least one roll of the upper and lower pairs of first intermediate rolls of a cluster mill of the 20-high (1-2-3-4) type. The drive comprises a first horizontally oriented rack connected to one of the first intermediate rolls by a link and universal joint assembly. As least one idler gear, with its axis horizontally oriented, is meshed with the first rack. A second rack horizontally oriented is affixed to the piston of a horizontally oriented hydraulic cylinder. The second rack and the hydraulic cylinder are in parallel spaced relationship to the first rack. The second rack is meshed with the at least one idler gear so that axial movement of the piston and second rack in the hydraulic cylinder will result in axial movement of the first rack via the at least one idler gear to axially shift the at least one roll.

Abstract: A system and method for improving properties of a metal strip during rolling between rotating upper and lower work rolls in a mill stand, for reducing work roll edge wear, for improving distribution of thermal expansion of the work roll during rolling, for reducing required rolling torque for achieving a particular strip thickness reduction, and for increasing the tonnage of rolled strip between roll changes, by continuously shifting the rotating work rolls during rolling to impart a spiral motion to the work rolls, and by online grinding, heat rehardening and cooling of the work rolls outside the mill stand.

Abstract: A roller die apparatus for supporting pairs of roller dies in predetermined clearances for processing a web workpiece, and for varying the clearances between the dies to accommodate variations in the thickness of a web workpiece and having first and second roller dies rotatably mounted on respective roller die bearings, one of the first and second roller dies being moveable upwardly and downwardly transversely to its axis of rotation, and one of the first and second roller dies being moveable axially along its axis of rotation, thereby achieving adjusting of the die clearance between the first and second roller dies in two planes.

Abstract: A roll stand for rolling strip includes work rolls which rest against back-up rolls through intermediate rolls, wherein the work rolls and/or the back-up rolls and/or the intermediate rolls are arranged so as to be axially slidable relative to each other, and wherein at least the work rolls and/or the intermediate rolls have a curved or cylindrical contour extending over the entire roll length. The work rolls and the intermediate rolls have at one of their end faces an annular recess extending around the roll neck, wherein the annular recess is located between the roll neck and the outer surface of the roll.

Abstract: There are provided an even number of paired roll-shift type rolling mills 12a, 12b and a controller 16 for controlling the rolling mills 12a, 12b. Each of upper and lower work rolls 13 of each of the roll-shift type rolling mills has a predetermined crown curve and has a roll shifting mechanism 14 for axially shifting the upper and lower work rolls relative to each other. The controller 16 determines a shift amount of each rolling mill in order to obtain a predetermined cross section shape of a steel plate, shifts the work rolls of the rolling mill on the upstream side paired every rolling coil to thereby disperse wear on the roll surface, and moves the work rolls of the rolling mill on the downstream side of the pair in a predetermined direction by the same distance, thereby canceling the change in the cross section shape of the plate caused by the shifting operation for the wear dispersion.

Abstract: A method of influencing the strip contour in the edge region of a rolled strip in which by superimposing a conventional CVC contour the harmful side effect of a unilaterally narrowing roll on the body portion of the roll gap is compensated. Special CVC rolls are used as work rolls for influencing the strip contour in the edge areas. The special CVC roll for influencing the strip contour in the edge area is a roll with a profile, which, starting from a tapered end, has the steadily changing diameter differences of a continuously variable crown, which, in accordance with the invention, is profiled in axial direction in such a way that during its axial displacement the resulting undesirable component of the effect of the conical taper, i.e.

Abstract: A combined work roll crossing, offsetting, bending and work roll axial shifting system for a rolling mill having a housing member on each side and at each end of each work roll, Mae West blocks mounted on the housing members, roll chocks surrounding the ends of the work rolls, a pusher member mounted on each of the Mae West blocks and movable into and out of contact with the corresponding roll chock, a first hydraulic piston/assembly mounted on each of the housing posts and connected to the corresponding pusher member to move the pusher member into contact with a corresponding chock and to effect crossing or offsetting of a corresponding work roll, a pair of roll bending second piston/cylinder assemblies mounted in each Mae West block such that the pistons contact the corresponding roll chocks to move the chocks toward or away from the corresponding work roll when the second cylinders are actuated, a third set of cylinder/piston assemblies mounted in the Mae West blocks for balancing the backup rolls, and a f

Abstract: It is possible, in a rolling method of a strip shifting one-side-tapered work rolls in the axial direction and causing the upper and the lower work rolls to cross each other, to appropriately set a quantity of shift and a crossing angle and to improve an edge drop satisfactorily, by utilizing the relationship of the three factors including the quantity of shift and the crossing angle for determining quantities of operation necessary to correcting an edge drop of the strip and the quantity of correction of edge drop corresponding to these quantities of operation in the form of the relationship between the roll gap between the upper and the lower work rolls and the quantity of correction of edge drop, by providing an effective roll gap reference position apart from the strip edge by a prescribed distance.

Abstract: Device to move the rolls in a four-high rolling stand to roll sheet and wide plate, the device comprising jaws (12, 13) cooperating with the chock (14) of the respective lower (11) and upper (11a) roll, the jaws (12, 13) presenting at least a closed position in which they make the chock (14) solid to the system of axial travelling (23, 24) of the rolls (11, 11a) and an open position in which they release the rolls (11, 11a), the jaws (12, 13) cooperating with respective mating seatings defined laterally to the relative chock (14), each of the jaws (12, 13) being respectively connected to the system of axial travelling (23, 24) by an articulated parallelogram unit able to move on a plane which is substantially at right angles to the rolling plane, the articulated parallelogram unit comprising paired rods, respectively (17,117;18,118), pinned at the front to the respective jaws (12, 13) and associated at the rear with the axial travelling system (23, 24) by an articulation (19) with at least two axes of rotatio

Abstract: Device for the crossed displacement of rolling rolls (10), whether they be working rolls and/or back-up rolls, in a rolling mill stand (11) for plate and/or strip, the rolls (10) being supported at the ends by respective supporting chocks (12) associated to stationary housing (13), the chocks including an inlet side and an outlet side, the chocks (12) on one roll (10) being associated with the device to position the rolls (10) in a crossed position, cooperating with at least one of the inlet and outlet sides of the chocks (12) of at least one roll (10), there also being a front cam (16), whose axis lies on a substantially parallel plane to the rolling plane, associated with drive shafts (15), the front cam (16) comprising at least two substantially cylindrical coaxial elements (17, 18), one connected to the drive shaft (15) and the other cooperating with the chock (12), the front cam (16) including front surfaces of reciprocal connection (19, 20) defining inclined radial sliding planes and at least two princi

Abstract: The rolling apparatus 1 comprises a first roller-couple 101a,101b and a second roller-couple 102a,102b which are arranged adjacently in a feeding direction of work material A1 and roll the work material A1 in different directions each other successively. Each of the first and second roller-couples comprises two rollers each of which has a groove for determining the cross sectional shape of the wire on the circumferential surface thereof. The width of the grooves are less than 7 mm for the first roller-couple 101a,101b and are less than 6 mm for the second roller-couple 102a,102b. The center distance between the first and second roller-couples 101a,101b and 102a,102b is less than 50 mm.

Abstract: A roll-forming apparatus of the type used to form components, such as purlins, having C-shaped and/or Z-shaped cross-sections from sheets of planar material is provided with a plurality of roll-forming stations adapted to form first and second components each of which has a C-shaped cross section with a center portion and a pair of legs connected to the center portion, where the legs of the first component have a first length and the legs of the second component have a second length different than the first length. The roll-forming stations include a first roll-forming station having a plurality of forming rolls and a second roll-forming station for forming the legs of the first and second components.

Abstract: A roll former line for forming different shapes including a first roll stand attached to a bed which provides vertical adjustable movement. The roll stand includes three spindles in vertical alignment with each other, the forming rolls on the top and bottom spindles working against opposite sides of the middle forming roll, so as to provide reverse shapes between the top and middle forming roll and the middle and bottom forming roll. Linear actuators are connected to the bed of the first roll stand for moving the first roll stand vertically on the bed. Opposite the first roll stand on the line is a second roll stand attached to a second bed including two spindles in vertical alignment and corresponding forming rolls thereon. The first roll stand can be raised or lowered by the linear actuators so as to use reverse forming rolls on the first roll stand in conjunction with the forming rolls on the second roll stand to form a reverse shape on one edge of the sheet being formed.

Abstract: A mechanism for simply changing the roller width of a roller straightener for straightening the warp of rolled sections, having two or more straightening rolls and a mechanism for permitting at least one straightening roll to move in a direction parallel with a spindle using the rotational force of the spindle as a drive force.

Abstract: A roll stand with backing rolls and work rolls for rolling sheets and strips, in which at least the upper and lower work rolls mounted in chucks inside of housing windows formed between housing columns of the roll housing can be moved out of their shared vertical plane horizontally in opposite directions by movement drives effectively associated with the roll chucks into positions wherein the vertical planes that pass through the axis of roll of the upper work roll and of the lower work roll intersect. This is achieved by the fact that on the inner and outer sides (which are opposite to each other and run parallel to the direction of roll) of each housing column, a movement and a swivel bearing are arranged for one of two substantially horizontal beams. The beams are parallel, connected to each other and extend on both sides past the housing columns on one side, the beams extend into the housing window and, on the side facing away from the housing window, out of the roll housing.

Abstract: The present invention provides a rolling-mill roll of a barrel-width adjustable type improved in strength by preventing stress concentration in a torque transmission structure for transmitting the torque from drive side roll to another roll. The connecting rod coaxially projected from the drive side arbor is inserted into the sleeve, and the rolls are mounted onto the circumferences of the connecting rod and the sleeve. The connecting rod and the sleeve are supported in a housing via bearings and are coupled with each other by a screw shaft mechanism so that the sleeve is axially movable to vary the barrel width. The complementary engagement between the spline or key for transmitting the torque of the arbor to the sleeve is made at a position offset outward from the axial center of the sleeve bearing so that the complementary engagement is not affected by the bending of the roll due to the rolling reaction and thus a stress concentration is prevented.

Abstract: Device for the axial shifting of rolling rolls in a rolling mill stand of a four-high type for the production of strip and/or plate, the stand being equipped with means for the reciprocal cross-over displacement of the processing rolls (10) on a plane parallel to the rolling plane, each roll (10) being borne on relative chocks (11) associated with stationary housings (12), a shifting jack (24) being included and being anchored at one end to a stationary housing (12) and at the other end to an erection element (31), jaw means (15) being included for the temporary clamping of the erection element (31) to a chock (11), the engagement surfaces of the jaw means (15) cooperating in the engagement position (15a) with engagement means included at least on the sides of the chock (11), these latter engagement means being conformed as a sliding element (28) having at least a first position and a second position in relation to the engagement surfaces (29, 30) of the jaw means (15), these first and second positions depend

Abstract: A method for adjusting the roll gap in strip rolling mills including a roll stand equipped with hydraulic adjusting devices on the drive side as well as on the operator side, wherein the positions of the rolls in a roll stand are adjustable by means of the hydraulic adjusting devices. Prior to the beginning of rolling, the stand is calibrated in a reproducible state. For any changes of the stand geometry and/or the force proportions in the stand, position changes of the adjusting devices corresponding to and resulting from these changes are determined. Changes in the stand geometry and/or the force proportions adjusted or occurring during the rolling operation are regulated by utilizing the difference between the determined corresponding adjusting positions on the drive side and the operator side and by controlling the adjustment toward zero.

Abstract: An improved roll shifting system for rolling mills comprising a pair of work rolls positioned on each side of the rolling plane, a pair of upright frame posts defining an opening in which chock guides are mounted facing the opening and chocks on each axial end of each roll. The chock guides have upper and lower leg portions extending outwardly from the frame posts upon which box slides are mounted. Hydraulic pistons and cylinders connected between the distal end of the box slides and the distal end of each leg move the box slides, thus moving the chocks carrying the work rolls.

Abstract: A bearing mount assembly is installed in opposed relation to a roll support frame with the pass line interposed therebetween, the bearing mount assembly being provided with bearings capable of removably supporting the front ends of roll shafts carried on the roll support frame. In roll exchange operation, the bearing mount assembly is moved away from the roll support frame and has its bearings removed therefrom, whereupon the bearing mount assembly is turned from this raised position to a flat position to provide a roll exchange operation space defined above the bearing mount assembly, making it possible to effect roll exchange operation.

Abstract: The present invention relates to a universal rolling machine wherein a pair of left and right vertical rolls, which are positioned on axial centers that intersect axial centers of a pair of upper and lower horizontal rolls, are mounted coaxially within vertical roll chocks, and the vertical roll chocks are each arranged within a housing in a freely slidable manner along a direction of rolling of a material to be rolled. Assemblies each comprising a circular cylindrical nut and a screw are arranged on either side of the vertical roll chocks along the direction of rolling in spaces between the housing and the vertical roll chocks, as a movement mechanism for the vertical roll chocks. The provision of this configuration enables the use of conventional vertical roll chocks, ensures sufficient mechanical strength with respect to the reactive forces applied to the vertical rolls during the rolling, enables a reduction in costs, and also enables a significant shortening of the time required for replacing the rolls.

Abstract: It is an object of the present invention to provide a supporting method, equipment, and controlling method for the roll-former stand by which the height and inclined angle of the cluster roll comprising subsequentially deposited plurality of side rolls likely as a roll former as a pipe mill can be arbitrarily set, and the interdistance between said rolls can be reduced. The basic structure consists of the following procedures; namely, (1) a supporting a pair of cluster platforms, on which a common bed is mounted, by a link being formed by jacks; a plurality of side rolls is supported by a roll bracket and deposited on said common bed, (2) fixing both end portions of the link on the platform or a bed plane surface to form an arbitrary triangle, and (3) measuring the length of the link by a linear encoder which is provided along said links. The measured data is converted to the Cartesian coordinates by the computer.

Abstract: A method and an arrangement for rolling strip with axially displaceable rolls, particularly wear-resistant rolls. Rolls with increased diameter end portions are used. The rolls are axially displaced relative to each other in such a way that the rolled strip is in contact over the width thereof with the portions of the rolls having the smaller diameter. With increasing temperature of the rolls and, thus, thermal cambering of the rolls, the rolls are displaced in opposite direction relative to each other until areas of the increased diameter end portions are moved over edge areas of the rolled strip.

Abstract: The rolling mill includes upper and lower work rolls, a roll bending apparatus for applying a bending force to the upper and lower work rolls, a roll shifter for axially shifting the upper and lower work rolls in opposite directions, and a back-up roll for supporting the upper and lower work rolls. The upper and lower work rolls have a bus having a contour comprising first to fifth regions. The rolling mill is adapted to have the large changability of plate crown effected by the roll shifting on plates with narrow or intermediate widths. The use of a combination of roll shifting and roll bending causes contours of the upper and lower work rolls to overlap deflection of the upper and lower work rolls, resulting in that a smooth roll diameter profile across the width of the plate to be rolled where the upper and lower work rolls contact the plate.

Abstract: Apparatus and method for roll crossing and shifting in which work roll chocks are mounted between Mae West blocks, the chocks and Mae West blocks being provided with opposed contact surfaces defining an angle .beta. to the roll axis, whereby, when the rolls are axially shifted, the rolls also cross, through an angle .alpha., due to forces acting on the chocks as they move along the contact surfaces of the Mae West blocks.

Abstract: A straightening machine for rolled beams, particularly hyper-beams, includes two straightening disks which are mounted on a straightening shaft and rest against the flanges of the beams from the inside, wherein at least one of the two straightening disks is axially displaceable. A support ring is arranged between the straightening disks. The support ring has distributed over the circumference thereof a plurality of hydraulic cylinders. The adjusting pistons of the hydraulic cylinders are connected to the axially displaceable straightening disk.

Abstract: A rolling mill includes a roll barrel having a straight region disposed at the middle thereof, sub-crown control regions disposed at both ends thereof, and main-crown control regions disposed between the straight region and the sub-crown control regions. The roll barrel has an outer surface having a bus bar which is a straight line inclined to a longitudinal axis of the roll barrel in the straight region, steep convex and concave curved shapes in the main-crown control regions, and gentle convex and concave curved shapes in the sub-crown control regions. The roll barrel has both ends having a diameter approximately equal to each other. The roll provides a large degree of freedom in designing curves to be applied to an outer surface of a roll barrel with the result that a larger crown control can be performed, and has a small number of factors for a vibration of a plate.

Abstract: In a six high rolling mill comprising each pair of upper and lower work rolls, intermediate rolls and backup rolls, at least the intermediate rolls of the work and intermediate rolls being adapted for shifting in axial directions thereof, each of the intermediate rolls has a barrel length longer than that of the backup roll such that barrel ends of the intermediate roll extend beyond barrel ends of the-backup roll at maximum and minimum shifted positions of the intermediate roll, thereby providing a six high rolling mill having a high mill rigidity.