Abstract: A rolling mill provided with a pair of rolls rotatable in a roll housing and in a first mode of operation drivably connected to respective drive gears of a main frame and gear housing, the drive gears meshing with respective pinions which mesh together, the main frame and gear housing being capable of being located in either one of two positions angularly spaced at 180 degrees, and the drive gears and pinions are capable of being re-adjusted in position whereby in a second mode of operation the drive gears can be brought into mutually meshing positions and the pinions can be moved apart to become the gears with which the rolls are drivably connected.

Abstract: Rolling unit supported as a cantilever and comprising pairs of rolls (12) which are supported as cantilevers and have their axis horizontal and/or vertical, such unit (10) including a working area (13) and at the same time an area (14) for replacement and maintenance, such two areas being different and located diametrically opposite to each other at the two sides of an axis of rotation (26), the rolling unit (10) being placed between the two areas (13-14), the axis of rotation (26) being vertical or tilted.

Abstract: A plurality of roll stands are arranged along a planned passage line of a roll material. Each of the roll stands is provided with a pair of rolls each of which is formed, on the outer circumferential surface thereof, with a groove for rolling. The bottom surface formed on each roll is a circular arc in cross section. Both side surfaces of the groove are, in cross section, circular arcs of a radius larger than that of the bottom surface or segments of line.The roll material is transferred along the planned passage line is passed between the grooves on the pair of rolls in each roll stand. Thus, the roll material is rolled. In this case, even is the thickness of the roll material deviates, it can be rolled into a finished material of a prescribed dimension.

Abstract: A slab is successively fed between periodically moving press tools to reduce the slab in a widthwise direction. In this method, the leading and tail end portions of a given length in the slab are reduced at a reduced width wider than that of remaining steady portion.

Abstract: A roll block for rolling wire to final gauge in a high speed wire mill with a plurality of roll units alternatingly positioned at right angles to each other and behind each other, which are driven by two roll drive shafts running on both sides of the line of rolls parallel to it, includes a dividing gear unit for driving both drive shafts by a common drive motor. The individual roll units are connected to the roll drive shafts by miter wheel, bevel and/or other gear units. The gear ratios in the dividing gear unit on setting predetermined rotational speed ratios of the roll drive shafts lead to a predetermined series of caliber reductions for which the respective roll block is designed. Other materials and/or roll products require, if the gear ratios and rotational speeds are to be maintained constant, correspondingly changed dividing gear units. Such changes are no longer required when the dividing gear unit is a mechanical or hydraulic gearshift which produces different rotational speeds.

Abstract: A continuous rolling mill for producing seamless tubes, operating on the restrained mandrel principle, has a stand-less structure which includes a load-bearing box-type framework wherein there are formed seats for accommodating working rolls and their chocks. The structure has reduced bulk in the axial direction and weight.

Abstract: The structural steel rolling mill comprises a reversing two high rough rolling mill, at least one universal working rolling mill and at least one flanging edging rolling mill included in a reversing tandem rolling mill group, and a universal finishing rolling mill at the outlet end of the structural steel rolling mill. The reversing tandem group following the rough rolling mill has a universal working rolling mill, a flanging edging rolling mill and the universal finishing rolling mill. By including the universal finishing rolling mill in the reversing tandem rolling mill group the universal finishing rolling mill also participates in the reversing action and because of that is more effective in shaping than the standard finishing rolling mill so that in practice the special universal finishing rolling mill following the reversing tandem group is omitted as well as the edging rolling mill commonly provided with it and the roller bed located between them.

Abstract: A supercompact rolling group (10) with rolls supported at one end. Vertical (11) and horizontal (12) units are arranged alternately or as necessary. Each unit (11-12) is driven by an independent motor (25-23) through a transmission (34) on parallel axes. A rolling line has at least one supercompact rolling group (110-210) constituted as above.

Abstract: A plate-like stock material is rolled or edged to a desired width on an edging stand of an edger. The edging stand is equipped with a pair of vertical rolls. The central axis of at least one of the vertical rolls of the edging stand is tilted within a suitable angle range toward the same direction as the advancing direction of the stock material or toward the direction opposite to the advancing direction of the stock material in a vertical plane parallel to the advancing direction of the stock material. The resulting downward bending deformation is received by a table roller.

Abstract: A method of rolling steel rods or wires by grooveless rolls for reducing sectional areas of the rods or wires and achieving a stable rolling operation with high efficiency by limiting to less than a predetermined value the ratio of a long side to a short side of a cross-section of a blank material (having a rectangular cross-section) which has passed through each pair of grooveless rolls or limiting the ratio of the diameter of each pair of grooveless rolls to the gap therebetween. The method of rolling steel rods or wires by grooveless rolls also achieves high elongation efficiency to make stable the rolling operation by limiting the ratio of the diameter of each pair of grooveless rolls to the gap therebetween. The method uses a grooveless roll entry guide in the grooveless rolling so as to securely hold a blank material from entry to exit in a gap between the pair of grooveless rolls to eliminate overturns at the ends of the blank material and fins extending from the material due to the overturns.

Abstract: Rolling method and apparatus for forming sections having a flange connected to a web. Between two optional steps of roughing, intermediate rolling, and finishing steps, rolls 15, 15', 16, and 16' are arranged to expand the web in the widthwise direction. The rolls 15, 15', 16, and 16' fall in contact with the inner sides 21 and 22 of flanges. The rolls 15, 15', 16, and 16' may be engaged with the upper and lower faces of the web. The axes of the rolls 15, 15', 16, and 16' may be inclined at a predetermined angle .theta.h in a direction horizontally rectangular to the rolling direction. It is preferred that the axes of the rolls 15, 15', 16, and 16' be vertically inclined at an angle .theta.v to the horizontal plane.

Abstract: A method of controlling an edging opening in a rolling mill, comprising measuring a width distribution of a plate to be rolled at an inlet of an edging roll in the rolling mill, calculating beforehand a width deviation distribution and a length in the moving direction of the plate at an irregular deformation portion caused in a rolling process in accordance with a predetermined pass schedule and a target width deviation distribution of the rolled plate required at an outlet of the rolling mill, calculating an optimum edging opening variation distribution using a plate width adjustment efficiency calculated on the basis of the beforehand calculated value and supplying the optimum edging opening variation distribution to an edging opening setting unit for the feedforward control.

Abstract: A continuous rolling mill is constructed by arranging driven horizontal rolling mills and undriven vertical rolling mills alternately and determining the values of the thickness of the rolled material between adjacent stands, the interaxial distance between work rolls, and the diameter of the work roll to satisfy predetermined relationships.

Abstract: A roll stand used for a cold forming apparatus wherein a body of the roll stand has a slant surface on which a pair of non-driving rolls are installed so as to press sheet metal therebetween. The angle between the slant surface of the body and a base on which the body is installed is adjustable by rotating the body, thereby twisting the sheet metal.

Abstract: A method for finishing a relatively long metal tubing stock to any desired tapered shape through a single-pass operation. The method is performed with any number of individual swaging units, arranged in tandem each having the identical construction including the same working parts and assemblies. A grooved roll arrangement, associated with the tandem-configured swaging units, is used as a preliminary step to form an initial metal tubing stock into a multiple-stepped shape.

Abstract: The apparatus and method make possible the semicontinuous rolling of an extensive range of product widths from no more than three widths of slabs. The leading end of a slab is forged or upset laterally between dies tapered to reduce its width at said end gradually to a value less than the desired width at the end of the pass. The slab is then passed through grooved vertical edging rolls to reduce its width and into the rolls of a roughing stand. The edge rolling tends to move the overfilled metal into the void created by the dies. As the trailing end of the slab approaches the roughing stand the edging rolls are backed off, allowing that end of the slab to fan out laterally. As the slab leaves the roughing stand it is rolled between grooved vertical edging rolls to reduce spread and bring the fanned-out trailing end to size. That operation causes the trailing end to bulge rearwardly at its center, so compensating for fishtailing.

Abstract: A control device for a continuous rolling machine adjusts the rolling position of an ith mill stand to correct a first rolling material dimension and simultaneously controls the rolling position of an (i-1)th mill stand to adjust a perpendicular dimension of the rolling material to compensate for changes caused by the adjustment of the rolling position of the ith mill stand.

Abstract: Disclosed is a method and apparatus for controlling lateral unstable movement and camber of a strip being rolled in which the lateral displacement and the camber magnitude of the strip being rolled are directly detected. The lateral unstable movement is controlled by changing the right and left roll gaps of the horizontal rolling mill while the camber of the strip is corrected by changing the path line through the vertical rolling mill. As a result, the lateral unstable movement of the strip can be prevented so that the rolling operation can be carried out in a stable manner. In addition, the quality of the rolled strip can be improved and the yield can be increased.

Abstract: A single strand rolling mill has successive pairs of work rolls arranged to roll rod and bar products in a twist-free manner. The work rolls are carried on roll shafts included as part of roll packages which are detachably mounted to gear housings, and the gear housings contain intermediate drive shafts and intermeshed gears connected via line shaft segments and intermeshed bevel gears to a primary mill drive. The gear housings are carried on a base which is made up of a flat vertically upstanding structural member standing on edge and joined to an underlying base plate. The structural member extends beneath and in parallel relationship to the rolling line. Rib members extend laterally away from and are spaced along opposite sides of the structural member. The rib members are joined on edge to both the structural member and the base plate and have upper support edges on which the gear housings are secured.

Abstract: To reduce the width of slabs from a reheating furnace to the width required in a finishing rolling train, thereby making it possible to feed slabs of only one width, or only a few widths, into the reheating furnace, the invention proposes rolling the slab in a width-reducing roll train in which the slab is subjected to traction such that plastic deformation occurs between the roll sets. In particular the width-reducing roll train has only one set of thickness rolls and has one or more sets of width rolls, thereby minimizing the length of the roll train and consequently reducing the lengths at the ends of the slab which are not subjected to the traction.

Abstract: A continuous rolling mill has horizontal roll stands and vertical roll stands disposed alternatingly with rolling guides between the work rolls of adjacent roll stands. The roll stands together with the rolling guides are movable in the direction crossing the rolling line to an exchanging position where the work rolls and the rolling guides are exchanged with new ones. The continuous rolling mill further has a supporting frame supporting the roll stands and movable to the exchanging position thereby to bring the roll stands and rolling guides to the exchanging position, and an offsetting device adapted to move one of the adjacent roll stands relatively to the other of the adjacent roll stands and to the frame in the exchanging position such that the rolling lines of the adjacent roll stands may be offset from each other.

Abstract: A control device for a continuous rolling machine effects feedback control by measuring vertical and lateral dimensions at a point after an ith mill stand, and by controlling the tension in the material between an i-1th and the ith mill stand and the position of the ith mill stand to reduce the differences between the detected dimensions and reference dimensions to zero. A shape correction device may be used which calculates lateral and vertical dimension change values for the i-1th stand, which are used to control the position of the i-1th stand and the tension in the material between an i-2th mill stand and the i-1th stand to assist in bringing the actual dimensional output values into coincidence with the reference values.

Abstract: A high reduction method and apparatus for continuously hot rolling a product through a plurality of roll passes, wherein the distribution of horizontal forces in at least one roll pass other than the first is such that spontaneous entry is prevented by a maximum momentary opposing force which is greater than the available delivery force of the preceding roll pass. An additional force is exerted on the product in advance of the preceding roll pass. This additional force, when combined with the available delivery force of the preceding roll pass, is of sufficient magnitude to overcome the maximum momentary opposing force of the said one roll pass and thus achieve forced entry therein.

Abstract: A two-high rolling stand (1) for bar and/or wire rolling mill. The rolling stand (1) is characterized in that a roll package, which substantially comprises a pair of rolls (13) with their axial directions in parallel and necessary bearing devices (14) with bearings and bearing housings for supporting said rolls (13), is located between two side plates (16) or the like, which are in parallel with each other, and of which each plate (16) is arranged with its main extension plane (17) substantially in parallel with a plane through the centre lines of the rolls (13). The roll pair further is characterized in that the side plates (16) on opposed sides of said roll package are arranged to take up roll forces via two end members (18), and that the roll package is arranged so as directly and/or indirectly to rest against the end members (18).A further characterizing feature is that said end members (18) are arranged so as to permit adjustment of the roll distance, so-called roll gap adjustment.

Abstract: A compact rolling mill has a housing structure divided into a plurality of rolling bays by rigidly interconnected posts extending transversally across the rolling line. Each rolling bay has a window facing a common side of the mill. The rolling bays are adapted to contain roll packages, with each such package including a pair of work rolls straddle mounted between bearings arranged in bearing chocks. The roll packages are movable, either singly or as a group, in a common lateral direction through the windows, between operative rolling positions supported by the housing posts within the rolling bays, and extracted inoperative positions on the aforesaid common side of the mill.

Abstract: Disclosure is made of a process for reduction and sizing of welded pipes, whereby a pipe is reduced in diameter in passes formed by rolls of alternating horizontal and vertical stands. The weld zone is deformed by portions of roll passes of an equal curvature. Disclosure is further made of a mill for effecting the above method, which comprises alternating horizontal and vertical stands with rolls whose working surface is defined by arcs of at least two radii. The radius of at least one of said arcs is equal to the radius of the roll welding pass. The apices of said arcs of an equal radius are in the same plane extending through the longitudinal axis of the mill and on the line of motion of the weld.

Abstract: A continuous mill has a plurality of passes arranged in series and formed by work rolls which are mounted on shafts secured to common chocks accommodated in housings.The chocks provided in the mill are equal in number to the workrolls forming a pass. Each of the chocks has two sides converging at an angle, and the shafts carrying the workrolls are cantilevered to each of said sides. The shafts secured to one side are offset relative to the shafts secured to another side so that the adjacent passes are spaced in closest possible proximity with one another; the angle between the sides of each chocks being equal to the divergence angle of the adjacent passes.

Abstract: There is disclosed a method for rolling an ingot having a substantially trapezoidal cross-section and coming from a continuous casting machine of the wheel-and-belt type, the method comprising initial rolling of the ingot simultaneously on the side corresponding to the minor base of the substantially trapezoidal cross-section and on the edges of the major base of the cross-section to obtain a cross-section having two orthogonal axes of symmetry. The ingot is than rolled by subsequent two-roll stands. There is also disclosed a rolling mill for carrying out the method, comprising a first three-roll stand with the rolls arranged to provide the desired cross-section having two orthogonal axes of symmetry, and with subsequent two-roll stands.

Abstract: A device for controlling the rotation of the working rolls in a tube rolling mill of the kind comprising a number of housings, each containing three working rollers normally in axial alignment on a single bearing structure, the rolls in each housing being keyed to corresponding shafts controlled from outside the housing and actuated by a single rotor, the device being characterized in that it comprises:three high-speed shafts (8, 14, 21) borne outside the plurality of housings (2) in the rolling mill (1) and extending parallel to the common axis of the housings (2),a reduction gear (22, 23, 24) for each working roll (4, 5, 6) of each single housing (2), borne outside the housing and axially engageable or disengageable from the corresponding shaft (4a, 5a, 6a) of the aforementioned roll (4, 5, 6),a bevel gear (22a, 23a, 24a) between each reduction gear (22, 23, 24) and one of the high-speed shafts (8, 14, 21), anda kinematic transmission (9, 11, 13-16, 15, 20) between the single motor (7) and each high-speed s

Abstract: An apparatus for making compacted, helically stranded cable having a circular configuration in cross-section. The apparatus comprises a first set of opposed rollers each having a peripheral concave edge and surface such that when the edges of the rollers are placed together, the concave surfaces provide an opening having a major and a minor axis located perpendicular to each other across the cross-section of the opening. A second set of opposed rollers having peripheral concave surfaces provides a second opening, the second set of rollers and opening being located downstream from the first set of rollers and in line with the first opening. The concave surfaces of the second opening have a relief along an axis that is rotated approximately 90.degree. from the major axis of the first opening.

Abstract: A rolling mill for rolling wire or rod product having a plurality of roll stands arranged one after the other, each having at least three driven rollers and in which the distance between at least two adjoining successive stands forming a group is not substantially greater than the roller diameter of the stands and the last sizing pass of each group of stands has a regular cross section in relation to the first sizing pass of the next following group.

Abstract: A rolling block for rolling a bar-shaped article having several rolling units mounted on a common frame, each rolling unit having three or more rollers journalled to respective pivotable elements and defining a sizing pass. For replacing the rollers, the pivotable elements can be swung about respective drive shafts from which the rollers are driven via step-up transmissions within the pivotable elements. The pivotable elements can be locked in their operative positions by hydraulically actuable coupling means and all the pivotable elements with the respective rollers therein can be fine-adjusted in the radial direction of the rollers.

Abstract: In a rolling mill having a plurality of roll stands aligned along the mill pass line, each roll stand having parallel roll shafts carrying cooperating pairs of work rolls, with the roll shafts of at least some of the roll stands being offset 90.degree.

Abstract: The invention relates to the manufacture of seamless tubes by the method of tube rolling. According to the method of the present invention a hollow blank is deformed with regard to its wall thickness, the deformation being alternated at least twice with a reduction of the diameter of the blank by means ofa mandrel with alternating groups of grooves for deformation and groups for reduction. The mandrel diameter at the portions corresponding to the groups of reduction grooves is smaller than the mandrel diameter at the preceding portions corresponding to the groups of grooves designed for deformation of the hollow blank to change the wall thickness thereof. During the continuous rolling, this enables subsequent levelling out of bulges at the tube ends in grooves on the mandrel during the deformation of the blank wall. As a result, the range of rolled tubes is considerably enlarged with an increased production of small-diameter thick-walled tubes and large-diameter thin-walled tubes without bulged ends.

Abstract: The disclosure is directed to improvement in stretch reducing mills utilized in the manufacture of seamless and welded tubing. The stretch reducing mill is well known in its generalities, and the disclosure is directed to improvements in the construction of such mills in the interest of increasing the efficiency of operation and performance of the mill. The disclosure is directed in part to the construction of a multi-stand stretch reducing mill with improved arrangements for removably securing the individual mill stands in position. This includes a heavy, massive structural beam from which all of the individual mill stands are suspended and which additionally serves, when the mill is ready for operation, as a means for holding the mill stands in position. In the latter capacity, the beam contributes both in terms of its great weight and in terms of distributing clamping forces to the individual mill stands from a limited number of clamps.

Abstract: A rolling mill is provided for rolling wire, light sections and tubular products having a fixed rolling axis and a plurality of roll stands arranged directly one behind the other and each of which has two driven work rolls extending parallel to one another and transversely of the rolling direction, said work rolls of each stand defining at least two sizing passes only one of which is located on the rolling axis at one time while the other sizing passes of the stand are interchangeably located away from the rolling axis and act as stand-by passes.

Abstract: A sizing mill is provided for reducing tubes having a number of roll stands arranged one behind the other and in which the sizing pass of at least the first stand is so out of round that the first sizing pass can effect tube reduction over the whole range of external diameters of tubes to be rolled in any given rolling program.

Abstract: Alternative tandem arrangements of rolling mill stands are formed by supporting a plurality of separate and independently operable rolling mill stand assemblies upon one or more pedestals extending along a given passline. In one disclosed embodiment, a single pedestal extends along the passline and includes an angularly-shaped plate extending parallel to the passline and including inclined surfaces for carrying rolling mill assemblies at spaced locations. Auxiliary adapter pedestals are disclosed to position a rolling mill stand such that the rotational axes of its rolls are inclined in a different relation to the horizontal than when the mill stand is supported directly by the angularly-shaped plate on the pedestal. In a second embodiment, a plurality of side-by-side pedestals extend along a passline. Each pedestal defines a separate rolling mill support surface with the support surfaces of adjacent pedestals lying in intersecting support planes. An improved rolling mill stand assembly is disclosed.