Abstract: A device for cold working pipe elements has two or more cams, each having a gear which meshes with a pinion to turn all of the cams. Each cam has a cam surface with a region of increasing radius and may have a region of constant radius extending around a cam body. Each cam also has a traction surface extending around a cam body. A discontinuity in each cam surface is aligned with a gap in the traction surface of each cam. The discontinuities and gaps provide clearance for insertion and removal of the pipe element between the cams to form a circumferential groove when the cams are rotated.

Abstract: A device for cold working pipe elements has two or more cams, each having a gear which meshes with a pinion to turn all of the cams. Each cam has a cam surface with a region of increasing radius and may have a region of constant radius extending around a cam body. Each cam also has a traction surface extending around a cam body. A discontinuity in each cam surface is aligned with a gap in the traction surface of each cam. The discontinuities and gaps provide clearance for insertion and removal of the pipe element between the cams to form a circumferential groove when the cams are rotated. A cup adjacent the pinion is movable along the pinion axis to engage and disengage from a stop surface on one of the cams. Engagement between the cup and a stop surface prevents rotation of the cam.

Abstract: A steel plant for the production of long metal products comprises a continuous casting machine, a rolling mill disposed downstream of the continuous casting machine, and one or more transfer paths for the semifinished cast products, configured to connect the continuous casting machine and the rolling mill. The steel plant also comprises at least one maintenance and/or heating furnace, a discharge plate for the semifinished cast products, and an aerial transfer device.

Abstract: A roll mill for rolling a product has a roll stand with working rolls and a control device. The product has a head part and is moved towards the stand at a product head part speed. The working rolls form a rolling gap. The control device controls the stand such that, before the product head part enters the gap, the rolls are rotated at a peripheral speed which is essentially the same as the product head part speed; the gap is vertically adjusted to essentially a product head part thickness, on the feeding side, before the product enters the gap; and, during or following the insertion of the product into the gap, the gap is closed to a pre-determined value, and the peripheral speed of the working rolls is modified, especially increased, according to the gap, essentially at the same time as the closing of the gap.

Abstract: A method of manufacturing large diameter tapered roller bearing cages includes beginning with a metal strip, coil or plate of cage blank material and feeding it into a rolling mill. The rolling mill includes a pair of unparallel forming rolls disposed to define a wedge-shaped gap therebetween. As the cage blank material is fed through the wedge-shaped gap, one lateral side of the cage blank material is plastically deformed to reduce its thickness and to elongate its length, while slight or no deformation is introduced into the other lateral side, thus forming the cage blank into an arc shape. A third roll disposed at the exit side of the forming rolls bends the rolled cage blank into a circular conical ring. Adjacent butt ends of the formed conical ring cage blank are aligned and joined together during the assembly process to form the large diameter tapered roller bearing cage.

Abstract: A rolling machine has pairs of rolls in a horizontal line of roll pair locations, with each pair including upper and lower rolls opposed across a vertical gap. A sliding frame is mounted on the rolling machine for movement alongside the rolling machine in a direction parallel to the line of roll pair locations. A lifting frame is mounted on the sliding frame for movement vertically relative to the sliding frame beside each of the roll pair locations. Other parts include a roll cassette and a load tray. The load tray is configured to carry the roll cassette, and is mounted on the lifting frame for movement relative to the lifting frame transversely into the vertical gap between the rolls at each roll pair location.

Abstract: A roll-forming machine has a stand (11) and a row of forming stations (12), which comprise frames (14, 15) for carriers (17, 18) of pair of rollers laterally displaceably mounted on the stand. An intermediate piece (16) is pivotally mounted on each frame for being pivoted about a vertical axis, and two carriers of a pair of rollers are separately laterally displaceably mounted on each intermediate piece. Each carrier of a pair of rollers comprises two axle pins for carrying a forming roller each and the two carriers of a pair of rollers have their axle pins directed towards each other.

Abstract: A device for manufacturing a metal wheel (1) from a pre-form, with stretching rolls (3) engaging on the rim region of the pre-form, by means of which rolls a rim (1.1) is end-formed which, for forming a rim flange (1.7). Freely rotatable rolls (4) are arranged underneath the stretching rolls (3) and cooperate with them. A method for manufacturing a metal wheel (1) from a pre-form, the pre-form of the metal wheel (1) to be manufactured is placed on a clamping mandrel (2) and is caused to rotate, stretching rolls (3) engage in the upper region of a rotation-symmetrical jacket of the pre-form with the exertion of radial pressure, and move along the jacket wall of the pre-form with compression and stretching of the jacket wall to form a rim (1.1) with a main movement component parallel with the axis of rotation (2.1) of the pre-form.

Abstract: The invention relates to a wire feed station of a wire shaping machine, said station including grooved rollers functioning in pairs and rotating in reverse directions with respect to each other. The wire is clamped between said rollers by these moving closer to one another. Both rollers of the same pair of driving rollers are supported at the front of the same bearing block unit, said bearing block being elastically deformable to absorb a relative movement of the rollers. Preferably, said bearing block also supports an endless transmission screw on which are engaged a couple of transmission wheels coaxial with the driving rollers which they drive into rotation. More particularly, a bearing block is deformed so that a relative movement of the rollers results in a rotation-deformation of the bearing block about the transmission screw axis.

Abstract: A method for hot rolling a metal strip or metal sheet, wherein 1.a) the slab or the strip or sheet is subjected in a first step to one or more reshaping actions in a hot rolling mill for producing a uniform, fine, recrystallised austenite structure and 2) the slab or the strip or sheet is then subjected in a second step to cooling for producing a fine-grain structure. The slab or the strip or sheet is subjected to heating between at least two roll stands of the hot rolling mill during performance of the step 1.a). The roll stands are arranged to follow one another in a rolling direction and in each of which the slab or the strip or sheet is subjected to reshaping. A heater for heating the rolling stock is arranged between at least two of the roll stands.

Abstract: A contoured roller set and associated systems and methods are disclosed herein. A male roller having a convex surface and a pair of female rollers each having a concave surface can receive a generally thin sheet of material and impart a doubly-curved shape to the sheet. The convex and concave surfaces of the male and female rollers can have a radius of curvature chosen to match a radius of curvature of the sheet of material. The rollers are positioned and shaped to urge the sheet between the female rollers to cause the sheet to curve toward the male roller.

Abstract: A method to check and control a roller bending machine for continuously bending an elongated workpiece at variable curvature radii in a bending machine using a series of rollers for bending, comprises the steps of measuring the distance of the elongated work piece in a point that is situated downstream the series of rollers for bending in successive instants, calculating a curvature radius of each bend section of the elongated workpiece, comparing the calculated curvature radius with the desired curvature radius and determining a difference between them, calculating the change of position to which an upstream roller has to be subjected in order to annul such a difference and operating the upstream roller on the base of the calculated change of position. A machine embodying the method is also described.

Abstract: A ring supporting device is provided with six support shafts capable of approaching and separating from the inner walls of metal rings. Each of the support shafts has an exposed side wall having formed thereon annular ridges and grooves. The side walls of the support shafts each have cushioning materials having a height substantially corresponding to the height of each of the grooves. The cushioning materials deform when the inner walls of the metallic rings make contact with the cushioning materials, and this relaxes a force which tries to expand the metallic rings from the inner wall side to the outer wall side.

Abstract: Provided are a conveying jig, a method of manufacturing the conveying jig, and a method of heat-treating metal rings using the conveying jig. The conveying jig is provided with a base and ten holding shafts raised from the base. Ridges and grooves are alternatively provided in the side wall of each holding shaft. The metal rings are held in position by being engaged in the grooves in the holding shafts. The space enclosed within the holding shafts is communicated with the atmosphere, and this allows, when the metal rings held by the conveying jig are subjected to heat treatment in a heat treatment furnace, an atmospheric gas to circulate in the space enclosed within the holding shafts.

Abstract: The invention relates to a machine, in particular a machine tool (9) for deep rolling wheelset shafts (5) for rail vehicle wheelsets with a headstock (12) and a tailstock (13) which each have prick punch points (16) for holding a wheelset shaft (5) at its respective ends, a device (16, 18, 20, 21 and 22) for driving the wheelset shaft (5), as well as tools which can be moved in directions (z, x) on the machine tool (9) for deep rolling lengthwise sections (axle zones 1 to 4) of the wheelset shaft (5), and clamping and feed devices. The tools consist of several pairs of work rollers (14, 15, 23, 25, 24, 26), of which each pair is intended for deep rolling at least one axle zone (1, 2, 3, 4) of the wheelset shaft (5).

Abstract: A method and apparatus are used to form a corrugated web having a cross sectional shape with at least one characteristic that varies substantially continuously along the substantially the entire length of the web. The apparatus includes multiple sets of dies which progressively form corrugations in a moving sheet. At least one characteristic of the web's cross sectional shape is varied along the entire length of the web by displacing the dies as the sheet moves through the die sets.

Abstract: An apparatus is disclosed having a plurality of cold rolling installations which each have a roll stand movable along a linear path and having at least one roll which is fixed rotatably to the roll stand, a drive connected to the roll stand and having an electric motor so adapted that the roll stand is drivable in an oscillating movement along the linear path, and a feed clamping saddle for feeding a blank. The apparatus has an electric control having at least two control outputs, wherein each control output is connected to the electric motor of the drive of a roll stand and wherein the control is so adapted that in operation of the apparatus it so controls the electric motors that they drive at least two of the roll stands with an adjustable phase displacement between the oscillating movements of the roll stands.

Abstract: A feed product is rolled into different sized finished products in a rolling mill finishing section which comprises a plurality of modular rolling units arranged along the mill pass line. Each rolling unit includes two roll stands with work rolls configured to define successive oval and round roll passes. The roll stands are designed to effect specific area reductions on products rolled through their respective oval and round roll passes. Feed products having the same entry size are rolled into finished products having different reduced sizes by providing altered rolling sequences in which a selected rolling unit is replaced along the pass line with rolling units having roll stands designed to effect area reductions that differ from those of the roll stands of the replaced rolling unit. Rolling units downstream from the replaced rolling unit are removed from the pass line. The roll stands of rolling units upstream from the replaced rolling unit remain unchanged.

Abstract: A longitudinal, multi-stand rolling mill of the continuous, restrained type for rolling hollow bodies is described, which comprises a main rolling mill (2) and an extracting rolling mill (4) in line and downstream of the main rolling mill, at a distance from the main rolling mill larger than the maximum length of the hollow body and of the spindle, and in which the spindle is extracted at the outlet of the main rolling mill in the gap between said main rolling mill and extracting rolling mill, and is laterally unloaded.

Abstract: In order to allow simple replacement of the roll stands in the case of a rolling mill for rolling elongated material, having multiple roll stands disposed in a line, forming a central caliber opening, wherein the roll stands are disposed in a stand position, in each instance, and can be displaced into at least one change position, in each instance, each stand position has an intake coupling, and the intake coupling has a coupling part on the roll stand side, as well as a coupling part on the drive side, wherein the drive-side coupling part is provided in axially fixed manner on the stand position.

Abstract: An apparatus is provided for reducing the section and sizing of rolling mill products for wire rod. The apparatus includes a first finishing monoblock made up of a plurality of rolling stands that are arranged in a sequence suitable for forming a rolling line. The apparatus also includes a second monoblock that is suitable for giving the product a round section with narrow tolerances. The second monoblock includes a sequence of stands with grooves configured to give a round-oval-round-round section to the product.

Abstract: The invention relates to a method for roughening the surface of a metal sheet used as electrode support in industrial electrochemical applications, and an electrode made by such method. Mechanical roughening is imparted by skin-passing the sheet between two rollers of a rolling mill, at least one of which is patterned according to a predetermined profile to be transferred by compression to the surface of the metal sheet.

Abstract: A method of reducing thickness of unbroken rolling stock (14) by longitudinal rolling includes deforming the rolling stock (14) in the width direction with deformation regions (26 to 29; 86 to 88) of the rolls (22 to 25; 82 to 84) penetrating in the rolling stock to the same depth.

Abstract: A cluster-type multistage rolling mill includes: a top inner housing housing a top roll group; a bottom inner housing housing a bottom roll group; an entry-side outer housing provided at entry sides of the inner housings and having an opening portion which a strip is allowed to pass through; a delivery-side outer housing provided at delivery sides of the inner housings and having an opening portion which the strip is allowed to pass through; sets of pass line adjusters provided in upper portions of the opening portions, and pressing an entry-side pressing portion and a delivery-side pressing portion of the top inner housing, respectively; and sets of roll gap controlling cylinders provided in lower portions of the opening portions, and pressing an entry-side pressing portion and a delivery-side pressing portion of the bottom inner housing, respectively.

Abstract: A method for producing profile sealing rings, in particular in a C-, V-, or U-shape, in which a profile strand (24) of definable cross-sectional shape is obtained from a band-shaped carrier part (2) by forming and the use of forming rolls (14, 16, 20, 22), the process of forming proceeding such that the profile strand (24) assumes at least part of an arc shape or spiral shape after forming.

Abstract: This invention pertains to a process for producing shaped components from high-strength and ultra high-strength steels with tensile strengths >780 MPa, wherein a steel sheet-metal strip is fed to a roll-forming installation and in the roll-forming installation is passed through roll stands and deformed by means of deformation rollers acting on the steel sheet, and wherein to avoid hydrogen embrittlement in plastically deformed regions of the deformed steel sheet-metal strip compressive stresses are introduced by stamping and/or upset-forging and/or overbending and bending-back or by machining the strip edges.

Abstract: The escalator step (1) or the travelator plate comprises a step skeleton (2) or a plate skeleton which carries at least one tread element (22). A first cheek (3), a central cheek (4), a second cheek (5), a carrier (6), a bridge (7) and a bracket (8) form the step skeleton (2). For each cheek (3, 4, 5), a sheet metal blank is stamped from a sheet metal strip and is subsequently formed into the cheek by means of deep drawing processes. The carrier (6), bridge (7) and bracket (8) connect the cheeks (3, 4, 5), wherein the components are welded by means of spot welding processes. The carrier (6), bridge (7) and bracket (8) are produced endlessly from sheet metal coil by means of a rolling deformation process and are cut to length depending on the step width.

Abstract: A flattening device for flattening a metal workpiece includes a frame; a first tightening assembly at a first end of the frame; a second tightening assembly at a second end of the frame; a series of work rollers interposed between the first tightening assembly and the second tightening assembly, wherein the work rollers include a first upper roller and a second upper roller, and a third, lower roller offset and interposed between the first and second upper rollers; wherein the upper and lower rollers accommodate bends in the workpiece of up to five yield stresses.

Abstract: Cold rolled material manufacturing equipment comprises: an unwinding device (21a) for unwinding a hot rolled coil after acid pickling; joining means (23), disposed on the exit side of the unwinding device, for joining the tail end of a preceding coil (25b) to the leading end of a succeeding coil (22a) unwound from the unwinding device; a rolling mill (10a, 10b) for continuously rolling the coils, with the leading end and the tail end of the coils being joined, in one direction; a strip storage device (50), disposed between the joining means and the rolling mill, for storing a strip S in order to perform continuous rolling by the rolling mill during joining of the preceding coil and the succeeding coil by the joining means; a strip cutting device (28) for cutting the strip to a desired length; a winding device (24) for winding the rolled coil; transport means (30) for withdrawing the coil from the winding device, and transporting the coil to the unwinding device (21a, 21b) so that the coil is rolled a pluralit

Abstract: A material handling system for feeding sheet material to a laser cutting system. The material handling system including a shuttle having a number of roller pairs corresponding to a number of material coils. Each roller pair holding a leading end of one of the material coils. The shuttle translating the leading end of a selected material coil to a location at which sheet material from the selected material is fed to the laser cutting system.

Abstract: Steel sheet having a composition of ingredients containing substantially, by mass %, C: 0.005 to 0.200%, Si: 2.50% or less, Mn: 0.10 to 3.00%, N: 0.0100% or less, Nb: 0.005 to 0.100%, and Ti: 0.002 to 0.150% and satisfying the relationship of Ti-48/14×N?0.0005, having a sum of the X-ray random intensity ratios of the {100}<001> orientation and the {110}<001> orientation of a ? sheet thickness part of 5 or less, having a sum of the maximum value of the X-ray random intensity ratios of the {110}<111> to {110}<112> orientation group and the X-ray random intensity ratios of the {211}<111> orientation of 5 or more, and having a high rolling direction Young's modulus measured by the static tension method and a method of production of the same are provided.

Abstract: In a wire rod mill, the last rolling block or unit, either a finishing unit or a postfinishing rolling unit, with common drive is not used for traction control, but traction control upstream thereof is provided to regulate the cross section of the wire rod strand before entry into the last stage. The product is a wire rod strand of low cross sectional tolerance and high uniformity over the length of the rod.

Abstract: Methods and apparatus for controlling a hem profile in roll-forming processes are described. An example roll-forming apparatus includes a first plurality of work rolls to form a first hem on a material and a second plurality of work rolls. One of the second plurality of work rolls is adjustable relative to an opposing work roll and to the first plurality of work rolls to adjustably control a profile of the first hem.

Abstract: A method for rolling thin and/or thick slabs made of steel materials into hot-rolled strip, which were previously cast as thin or thick slabs in a continuous casting machine, heated to rolling temperature in a pusher furnace or in a walking-beam furnace, and rolled in a common rolling train, then cooled and wound into coils. The method is carried out in a continuous manner at maximum capacity of the roughing train according to the quality standard of the hot-rolled strip while roller wear is reduced due to the fact that the roughing train is formed inline by roughing stands and finishing stands into which thin slab sections or thick slab sections are introduced at a suitable point of the roughing train according to the thickness thereof.

Abstract: A changeover system for a metal forming mill, in particular for a tube-forming mill, comprises at least one pair of work modules, the work modules of which are adapted to be pivoted into and out of a line of work stations of the mill. Each work module has its own drive or drives. Within a pair of work modules the two work modules are arranged such, that when one work module is arranged in the line of work stations the other one is arranged off the line.

Abstract: Apparatus (10) for continuously performing localized and/or extended deformations on metallic containers constituted by extruded or drawn and solid-drawn tubular bodies including: —A) interface module (1); —B) at least one work module (2, 2?, 2?) and—C) possibly one inversion module (3), wherein said modules are arranged so that they form a closed path and said interface module (1) includes a feeding station or drum (12), an unload drum (16) and at least one selective dispatch element for re-feeding the containers to the work modules (2, 2?, 2?) or the unload drum (16), depending on the number of predetermined operations

Abstract: The invention relates to a process for increasing the range of production of an installation for cold rolling of metallic strip, consisting of at least two rolling stands (L1, L2) operating in tandem. According to the invention, at least one (L1) of the rolling stands is equipped with means of converting the stand configuration, while keeping the same means (15, 16, 3, 3?) of applying the rolling force, in order to have at least two configurations available, each corresponding to one production range, and the configuration of said convertible stand L1 is selected to match the data of the product (M) to be rolled, thus allowing the production range to be increased.

Abstract: A rail system for transporting dual use vehicles includes a network of multiple non-interconnected rails where each rail comprises an extruded triangular shell and a support material. The rails are supported by a system of support structures where each support structure includes a base with a rail adjustment actuator for selectively adjusting the position of the supported rail. Each rail is sized to support a standardized dual use passenger vehicle adapted for roadway and rail travel.

Abstract: An apparatus for manufacturing a trapezoidal wire using two-set shaping rollers has a body rotating about a central axis at a predetermined speed, a plurality of first shaping roller sets installed along an outer circumference of the body, each first shaping roller set including an upper roller and a lower roller and a shaping portion, into which a wire is inserted to be processed, between the upper roller and the lower roller, and a plurality of second shaping roller sets arranged after the first shaping roller sets along the outer circumference of the body and in a direction in which the wire moves, each second shaping roller set comprising an upper roller and a lower roller and a shaping portion, into which the wire is inserted to be processed again, between the upper roller and the lower roller, wherein wires processed by the first and second shaping roller sets while passing therethrough are stranded by the rotating body.

Abstract: In a rolling mill which consists of at least one horizontal stand (1) and at least one vertical stand (2), which are connected with each other, between both stands (1, 2), connection elements (7) are releasably arranged, wherein the connection elements (7) consist of a right flange (14), a left flange (12), and a web (13) arranged therebetween.

Abstract: Disclosed is a roll-forming machine formed of a machine base and pairs of forming roll sets for the formation of a C-shaped component or a Z-shaped component from a sheet material, the two forming roll sets of each pair being symmetrically disposed at left and right sides on the machine base such that a gap is defined between the two impression wheels and two sheet-transfer wheels of each pair of forming roll sets for easy performance of maintenance work. The shaft-forming wheels of the forming roll sets of the 1st and 4th pairs are mounted with a respective locating block for easy rotation through 180° between two positions and selectively locking in one of the two positions by a respective locating rod to set the roll-forming machine for processing C-shaped component or Z-shaped component.

Abstract: A roll-forming machine formed of a machine base, a plurality of sheet-transfer roll sets, and a plurality of forming roll sets and adapted for the formation of a C-shaped component or a Z-shaped component from a sheet material is disclosed to have an adjustment structure for adjusting the horizontal pitch between the left-side forming rolls and the right-side forming rolls, the vertical pitch between the first left-side forming toll and the second left-side and the vertical pitch between the first right-side forming roll and the second right-side forming roll, and the pitch between the impression roll and sheet-transfer roll of each sheet-transfer roll set.

Abstract: A hot rolling installation should be constructed and able to be operated so that strips of materials, which can be shaped with different levels of difficulty and have a thickness of less than 1 mm, can be rolled. According to the invention, strip speeds of 15 m/sec should not be exceeded at the outlet of the last roll stand regardless of the material being used, and the hot-rolled strip should have austenitic structures. To this end, the invention provides that thin slab thicknesses of approximately 50 mm are used for easily shapeable material, that the first of seven stands is driven or executes only a smoothing pass, the slab is de-scaled in front of and behind the first stand, and that the second to seventh stand effects the reduction in thickness to less than 1 mm.

Abstract: A roller folding head is disclosed. Roller folding heads are used, for instance, when fixing the frame of a sliding roof in an opening in the roof of a vehicle. In order to do this quickly and automatically, the roller folding head is provided with at least two pairs of rollers, each pair of rollers consisting of a pressure roller and a counter-roller which interact in order to bend a flange along a folding line at a specific angle. The folding process is carried out in several stages, one flange being crimped around another flange in a series of partial steps at an angle of 180°. One pair of rollers is provided for each step, at least two thereof being arranged on a roller folding head.

Abstract: A multi-axial roll-forming apparatus that is configured to be quickly and efficiently modifiable so as to allow the formation of a variety of differently shaped component pieces from a variety of different shaped pieces of material. A variously adjustable roll-forming device is held in a variety of vertical and horizontal orientations within a variously adjustable frame. The variously adjustable frame allows for various adjustments so as to provide an aperture consistent with the dimensions of the material being processed or the pieces which are to be formed.

Abstract: A method for casting and rolling preliminary sections, especially H-sections, and a device for the support, guidance and deformation of a metal strand, especially a steel cast strand (1), in a continuous casting installation for preliminary sections with soft reduction (9), wherein roll carriers (2) are arranged below the continuous casting mold opposite each other on each side of the cast strand (1a, 1b), the rolls of said carriers being in transport and/or deformation connection with said cast strand, and wherein to avoid segregation and porosity, the preliminary section is precast in the continuous casting mould with a bulge (6a) on the flanges (7) on the surface (6b) of the web of said preliminary section, and the bulges (6a) of the flange (7) and the web of the preliminary section (6) are rolled flat in the soft reduction area (9) in such a way that the outer surfaces of the flange (7a) and the web surfaces of the preliminary section (6b) are largely plane.

Abstract: A contour roll former capable of operating with different sets of pairs of roll forming heads depending on the type of extruded profile to be produced. The contour roll former includes pairs of heads mounted on carriages capable of sliding horizontally back and forth along a direction transverse to the forming line, so that it is possible to replace one set with another with minimum handling, requiring only horizontal movement of the carriages.

Abstract: A roll forming apparatus includes at least one convertible roller assembly. The convertible roller assembly includes a support plate rotatably mounted on a shaft. The support plate includes at least one roller. The support plate may be toggled by an actuator from a first position for forming C shaped members to a second position for forming Z shaped members.

Abstract: An apparatus and method for selectively forming metal stud and track members from sheet material, the apparatus including a stud forming assembly capable of transforming the sheet material into a stud member as the material exits the stud forming assembly, and a track forming assembly capable of receiving the stud member as it exists the stud forming assembly and thereafter transforming the stud member into a track member. The track forming assembly is selectively moveable between an operative position wherein the track forming assembly is coupled to the stud forming assembly to receive the stud member as it exits the stud forming assembly, and an inoperative position wherein the track forming assembly is positioned such that it cannot receive the stud member as it exits the stud forming assembly. The apparatus may also include punch and shear mechanisms for performing various operations on the sheet material.

Abstract: A rolling train for the continuous rolling of strand shaped products has at each rolling location a pair of fixed stations which are closely spaced and have rails such that a mill stand at one station can be displaced away from the rolling line and be replaced at that location by a mill stand at the other station. The mill stands can be connected to the respective control and operating media sources by lines which are unreeled as the mill stand is moved away from the operating position or reeled up as the mill stand is moved into an operating position.