Abstract: A hydrostatic transmission with a closed hydraulic circuit includes a consumer which is connected through work lines to a reversible hydraulic pump and is pressurized on both sides by an external pressure source. The hydraulic circuit includes a first continuous rinsing and feeding circuit which depends on the leakage flow of the hydraulic pump and possibly a second discontinuous rinsing circuit separate from the first circuit and connected to the external pressure source. The hydrostatic transmission further includes an adjustable regulating device which determines through a valve the adjustment of the hydraulic pump. The regulating device, which may be arranged outside of the immediate vicinity of the hydrostatic transmission, interacts with a control device which is directly assigned to the hydrostatic transmission and includes a valve constructed as a servo valve, wherein, for adjusting the arrangement, the servo valve can be switched to manual control.

Abstract: A production plant for producing hot-rolled flat products includes a rolling train composed of a plurality of roll stands, a run-out table with devices for cooling the hot strip, and with subsequently arranged coiling machines for coiling the strip. At least the first roll stand of the rolling train is a reversing stand. At least one reeling furnace each is arranged in front of and following the reversing stand. A controllable cooling unit is provided between the reversing stand and the reeling furnace in front of the reversing stand.

Abstract: A method of rolling finished sections from a preliminary section by initially carrying out five or more passes and reversing passes between a universal stand and a horizontal stand, wherein profiled horizontal rolls of the universal stand form in the section two indentations located opposite of each other and offset relative to a longitudinal center of the section. Subsequently, head and flange projections of an emerging rail section are preshaped and the indentations are laterally reduced by one of alternative grooves of a horizontal stand of a preliminary rolling group. The emerging rail section is rolled in a reversing operation after three or more passes in the universal stand and in two alternative grooves of an intermediate upsetting stand. The section is finish-rolled into a rail section in an additional pass through the universal stand.

Abstract: A method of operating a roll stand arrangement composed of one or more roughing stands and a compact rolling group arranged downstream of the roughing stands and transversely offset relative to the roughing stands. The compact rolling group is connected to the roughing stands through roller conveyors and a transverse conveying unit. The compact rolling group is composed of a first and a second universal stand or two-high stand and an intermediate upsetting stand between the first and second stands. Preliminary sections arriving from a continuous casting plant are supplied directly or after intermediate storage to the roll stand arrangement. The rolling stock strand which has been rolled in the roughing stands is supplied optionally from a first entry side or a second entry side into the compact rolling group in dependence on the number of passes required by the respective rolling program.

Abstract: A method of coiling or placing bar steel or wire in coils, wherein the rolling stock is reeled from rolling heat in a basket or is placed by a coiler in the form of coils onto a conveyor and is collected at the end of the conveyor over a mandrel into a coil, wherein the rolling stock is cooled during coiling and the rolling stock is further cooled after the coiling process or the formation of coils. Cooling of the rolling stock from rolling heat prior to coiling into the transformation range characterized by the Ar.sub.3 line or Ar.sub.1 line of the transformation time-temperature diagram corresponding to the type of steel to be cooled is extended, such that, depending on the type of steel, the rolling stock is transformed immediately after cooling prior to, during or after coiling, uniformly over the entire length and entire cross-section thereof essentially isothermally from the austenite phase into the ferrite phase or pearlite phase and, as required, into the bainite phase.

Abstract: A pair of roll support shafts which are supported by bearings provided at both ends of the roll support shafts, wherein, between the bearings, toothed drums are mounted on the roll support shafts or the circumference of the roll support shafts is provided with toothings. Outside of the bearings, roll disks can be mounted on the ends of the roll support shafts, wherein one of the toothed drums meshes with a drive pinion mounted on a parallel drive shaft and the other toothed drum meshes with a loosely mounted intermediate pinion, wherein the drive and the intermediate pinion also mesh with each other. The roll support shafts are each supported in a free end of a single-armed tumbler lever which is swingable about the longitudinal axis of the drive pinion or the intermediate pinion, wherein the tumbler levers are supported relative to the roll stand by means of adjustable and securable rigid or elastic support members and the free ends are supported relative to each other through elastic members.

Abstract: A runout and braking device, particularly for medium steel rolled sections, includes a run-in roller table and a braking device arranged laterally offset and parallel to the run-in roller table, wherein the run-in roller table and the braking device form a runout and braking system. The runout and braking device of the above-described type includes a braking device with a rigidly arranged braking trough with a bottom which is outwardly inclined relative to the horizontal direction. The run-in roller table includes a lifting bottom forming a plane, wherein conveying rollers mounted below the lifting bottom protrude above the plane of the lifting bottom. Pivoting devices are provided for pivoting the run-in roller table together with the lifting bottom and the conveying rollers arranged below the lifting bottom about a laterally offset pivoting point into an inclined position toward the braking trough.

Abstract: A sealed roll bearing of a roll which has neck sleeves of high strength, preferably shrunk onto the roll necks of the roll, wherein the flanges of a profiled sealing ring sealingly engage over the end portions of the neck sleeve facing the end faces of the roll bodies and at least over portions of the end phases of the roll bodies. The flanges of the profiled sealing rings engaging over the end faces of the roll bodies are connected to the end faces of the roll bodies and the flanges of the profiled sealing rings engaging over the end portions of the neck sleeves surround the flanges of the profiled sealing rings engaging over the end portions of the neck sleeves so as to form a narrow gap, wherein the narrow gap is sealed by means of at least one sealing device.

Abstract: A grinding machine for the rolls of a roll stand includes a guide unit extending parallel to the roll to be ground. Mounted on the guide unit is a grinding unit which is displaceable in longitudinal direction of the roll by a displacement drive. The grinding unit is adjustable relative to the roll by adjusting drives. The guide unit is provided with a rotary drive which is capable of rotating the guide unit about its longitudinal axis. The grinding unit is formed by a grinding element which is symmetrical with respect to rotation. The grinding element is connected to the guide unit in such a way that the grinding element and the guide unit rotate together.

Abstract: A method of cooling steel sections which are hot from rolling by means of shock-like cooling following the rolling process so as to form a martensitic surface layer, and by subsequently autogenously tempering this surface layer by means of core heat to obtain a tough-resistant structure with an austenitic remaining cross-section, wherein the method is used in connection with types of steel which, with uncontrolled cooling in air, would directly transform from the austenitic phase into martensite because of their alloying elements from the group Cr, Mn, Mo, Ni and other suitable elements.

Abstract: A production plant for rolling hot strip from slabs produced by continuous casting, wherein a shearing machine is arranged following a continuous casting plant of the casting machine and in front of an equalizing furnace, and an additional shearing machine and a descaling unit are arranged following the equalizing furnace and in front of a rolling mill, and wherein a heating or cooling unit and a strip reeling unit of coiling machine are arranged following the rolling mill. A first roll stand group forming a continuously operating rolling train is composed of several four-high stands, for example, five four-high stands; individual heating devices are provided also between the successive four-high stands of this group of roll stands; in addition, the reeling unit or the reeling machine is configured as a double reeling machine.

Abstract: A device for influencing the profile of strip rolled in at least one roll stand includes adjusting units, bending units and possibly displacement units for the stand and spray beams adjacent the rolls of the stand for spraying cooling agent and/or lubricating agent onto the rolls, if necessary, in a controlled manner; the device further includes a regulating unit. Additional spray beams are provided adjacent the two end portions of the body of each roll, wherein the effective range of each additional spray beam extends from the respective end of the body of the roll into the area of the strip edge facing this end of the body of the roll.

Abstract: A method of regulating the cross-section of rolling stock through a looper for the rolling stock, particularly between roll stands in section rolling mills. In accordance with the method, the horizontal forces in the rolling stock are varied by varying the loop height, and width increases or width adjustments of the rolling stock are purposefully influenced through the horizontal forces.

Abstract: An apparatus for keeping cold strip dry in the runout of cold rolling and strip rolling plants includes units for deflecting liquid rolling medium in the area of the strip runout and/or for the removal of spray liquid adhering to the surfaces of the strip, wherein these units are logistically combined, the apparatus including the following components a fixedly installed partition wall having an upper portion above the strip runout extending to the stand platform and a lower portion below the strip runout extending to the base plate, a moveable partition equipped with moveable components for facilitating a problem-free roll exchange, a roll body blower constructed for deflecting squeezed-out rolling medium from the finish-rolled strip, a roll body sealing unit constructed for sealing the roll space above the strip relative to the strip, a strip edge blower constructed for producing an air flow perpendicularly to the strip in the roll gap on the exit side above the strip runout, and a vapor-exhaust unit for pro

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: A production plant for producing hot-rolled flat products includes a rolling train composed of a plurality of roll stands, a run-out table with devices for cooling the hot strip, and subsequently arranged coiling machines for coiling the strip. A compact deformation stage in the form of a rolling train with one to four roll stands is arranged following the reeling unit of a conventionally constructed hot-rolled wide strip train. This rolling train is specifically constructed for the deformation in the ferritic range.

Abstract: A method and an apparatus for an anticipatory thickness control in foil rolling by using characteristic lines stored in a process control computer of the individual manipulated variables (for example, strip tensions, rolling speeds) for various operating points (conditions of operation) or by using an on-line operating physical computing model, also in combination with a monitor control. The method includes the steps of determining the thickness deviations of the foil at the entry side of the roll stand and of compensating the thickness deviations by an anticipatory thickness control. The apparatus includes a thickness measuring device between the running-off reel and the rolling mill or the roll gap of the roll stand. The thickness measuring device is connected to a superordinated process control computer. Following the thickness measuring device is arranged a tensioning unit which serves to change the travel path of the foil strip between the running-off reel and the roll gap.

Abstract: A Steckel mill or coiler rolling mill includes at least one reversing stand and drivers and coiler furnaces arranged on the entry side and the exit side of the reversing stand, wherein the reversing stand, the drivers and the coiler furnaces are connected to one another through roller conveyors for the strip to be rolled. At least one heating unit is provided in at least one of the sections formed between the coiler furnaces and the reversing stand, wherein the heating unit covers at least a portion of the section.

Abstract: An oscillating device for a continuous casting mold, wherein the continuous casting mold is guided on a support frame and is moved in an oscillating manner by servo hydraulic cylinders arranged on the support frame. Each servo hydraulic cylinder is fastened at the bottom thereof through an elastic fastening element on the support frame and the piston rods of the servo hydraulic cylinders are connected with the mold. The fastening element is composed of an elastic bending web which on both sides thereof is provided with fastening flanges.

Abstract: A plant for producing hot-rolled steel strip in a production line includes a continuous slab casting plant, transverse cutting shears, a continuous furnace and a hot-rolling train. The continuous furnace includes a first stationary section and a second section formed with two moveable furnaces, wherein the moveable furnaces can be moved transversely between the production line and a lateral holding position. The length of the first furnace section corresponds to at least the length of the distance which is travelled at casting speed by the newly formed front end of the cast slab by transverse cutting from the transverse cutting unit to a point in front of that moveable furnace which is located in the production line after the exchange of moveable furnaces has been carried out.