Abstract: A method and a plant for reducing iron ore to pig iron in a blast furnace with the use of carbon, wherein a partial quantity of the carbon is admixed to the iron ore in the form of coke which ensures that the bulk material column is loosened and supported and that the gas can penetrate through the bulk material column in the blast furnace, and wherein the remaining partial carbon quantity is injected as a substitute reducing agent into the blast furnace. Prior to being injected into the blast furnace, the entire partial carbon quantity forming the substitute reducing agent is converted into a low-nitrogen reducing gas by gasification in a gasification reactor arranged spatially separate from the blast furnace.

Abstract: A tundish carriage for a double-strand continuous caster has a carriage frame displaceable on rails straddling a pair of parallel-wall or funnel-shaped continuous casting billet molds. The frame is of trapezoidal configuration with one relatively long beam and one relatively short beam connected by transverse beams at vertices provided with bolsters riding on the rails and with units for raising and lowering the trough for receiving the molten metal. The casting tubes extend downwardly from the trough and can be individually aligned with the respective molds without affecting the position of the other casting tube, utilizing an adjusting device at each bolster connecting a transverse beam with the longer of the longitudinal beams.

Abstract: A method of rolling a bar-shaped stock to predetermined end height and end width measured transverse to the end height and including providing a rolling will train having a plurality of arranged one after another active rolling mill stands having adjustable roll rips and forming rolling mill stand pairs, providing a respective plurality of hydraulic cylinder units for adjusting the roll rips of respective rolling mil stands, rolling the bar-shaped stock through the rolling mill stands, and compensating at least a fraction, individually for each of the plurality of rolling mill stands, of rolling force-caused spring-offs of the respective rolling mill stands by controlling operations of respective hydraulic cylinder units.

Abstract: A tension control method for a rolling stock section located between a front roll stand and a rear roll stand of a rolling train, wherein a tensioning element with an actual adjusting force is adjusted relative to the rolling stock section, so that the rolling stock section is deflected by the tensioning element by an actual deflection; the actual adjusting force and the actual deflection are determined; and a tension existing between the front roll stand and the rear roll stand in the rolling stock section is adjusted such that the actual adjusting force approaches a desired adjusting force and/or the actual deflection approaches a desired deflection.

Abstract: A method and an installation for producing slabs in a continuous casting plant which includes a strand guiding unit arranged following the casting mold and divided into segments. Each segment is composed of a two-part segment frame whose frame parts are braced together by hydraulic cylinders. Rollers for supporting and conveying the solidifying cast strand are mounted in pairs opposite each other, wherein at least one of these rollers, i.e., the drive roller, is pressed with a defined adjusting force against the cast strand for transmitting the strand conveying forces.

Abstract: A coil-laying head for a wire-coiling apparatus has a tubular body centered on and rotatable about an axis, a generally spiral guide tube having an inlet end at the axis and an outlet end opening generally tangentially of the axis at a radial spacing from the axis, and a helicoidal mounting plate having an inner edge fixed to the body and an outer edge secured to the tube. A helicoidal counterweight plate is fixed to the tubular body diametrally opposite the mounting plate and has radial and axial dimensions, at least one of which varies such that any section of the counterweight plate counterbalances a corresponding diametrally opposite section of the guide tube and mounting plate. The counterweight plate has a resonant frequency and the body has a nominal maximum rotation speed that is less than the resonant frequency.

Abstract: A device and a method for cutting a continuously travelling wire which emerges in the form of windings from a winding layer, wherein a cutting device arranged immediately following the winding layer. The cutting device includes a catching device for the targeted grasping of a winding arch and a device for cutting this winding arch. A device for controlling the sequence of movement of the catching and cutting devices are provided. The control takes place, for example, in dependence on the wire properties, such as, the wire diameter in the case of dimensional inaccuracies. In addition, the catching and cutting devices can be controlled in dependence on the position of operation of the winding layer.

Abstract: A planarity measuring roller is constructed as a loop lifter which is adjustable relative to a rolled strip. The loop lifter includes a plurality of measuring zones located next to one another over the width of the rolled strip. Each measuring zone includes a rotatably mounted individual measuring roller which is pivotable in a clockwise direction and interacts with a force measuring device. Each measuring roller is mounted in a pivotable housing-like lever frame. The pivot point of each lever frame, the point of rotation of the corresponding measuring roller and a force introduction point of the force measuring device arranged underneath of the pivot point of the lever frame form an approximately isosceles triangle.

Abstract: A method of controlling a cooling line of a mill train for rolling steel strips and sheets, with the method including calculating reference temperature conditions in the cooling line based on a preset reference temperature, calculating actual strip temperature conditions in the cooling line dependent on actual adjusted process parameters of the cooling line and specific process conditions of a strip, and controlling individually the process parameters of the cooling line by comparing the calculated actual temperature conditions with the reference temperature conditions; and a system for effecting the method.

Abstract: A mold for the continuous casting of metal includes a pouring portion with cooled long side walls and short side walls, wherein the pouring portion becomes narrower in the shape of a funnel in the casting direction until it reaches the size of the cast strand. In the funnel portion, the inner contours of the long side walls have in the casting direction from the top toward the bottom at least two points which have the property that they determine a straight line along which the inner contours of the long side walls are formed with at least one concave section and with at least one convex section in any selected sequence.

Abstract: An apparatus for positioning a smoothing roll which is mounted so as to be displaceable by a cantilever arm against the reeling mandrel of a strip coiler and to be adjustable particularly with a roll changing head against the reeling mandrel with the use of a force application unit. The roll change head includes a swivel arm which can be swivelled in a joint and is drivable to carry out a swivelling motion, wherein a steel roll is mounted at the free end of the swivel arm in a bearing, and an adjusting arm supporting the smoothing roll is mounted at the free end of the swivel arm, wherein the adjusting arm includes a force-controllable adjusting system for adjusting the smoothing roll against the strip coiler or the outer tube surface thereof, and wherein the force application unit for displacing the cantilever arm is a distance-controllable adjusting unit.

Abstract: An apparatus for coiling a continuously arriving wire has a main support rotatable about an axis and having mounting formations and a head carried on the support and having mounting formations engaging the support mounting formations. A guide tube is fixed on the head and has an intake end aligned with the axis and closely juxtaposed with the main support and an outlet end axially spaced from the intake end and opening tangentially offset from the axis. A releasable fastener engaged between the support and the head presses the head mounting formations against the support mounting formations.

Abstract: A broad side element for slab mold and including a cast plate having opposite inner and outer surfaces and a plurality of grooves provided on the inner surface for forming cooling channels and having each an undercut, and a plurality of inserts receivable in the undercuts of respective cooling channel-forming grooves for formlockingly covering the respective grooves, with the broad side element having upper and lower regions, and with at least the upper region having a middle portion and two side portions located on opposite sides of the middle portion.

Abstract: A position detector used with a roll stand having a fixed frame member and a roll-carrying member movable in a direction relative to the frame member, has first and second sleeves telescoping in the direction adjacent the members, a mount securing one of the sleeves to one of the members, and a fixed-length but elastically bendable link rod extending in the direction and having one end fixed to the other of the members and an opposite end fixed to the other of the sleeves. Thus on relative movement of the fixed and movable members the sleeves slide in the direction in each other. A sensor rod having one end fixed in the first sleeve extends in the direction into the second sleeve. A position sensor in the second sleeve juxtaposed with the sensor rod determines a position of the members relative to each other in the direction.

Abstract: A device with a stepped adjustment for adapting the vertical position of the rolls of a roll stand to the rolling line, wherein the rolls are supported on both sides in chocks and arranged so as to be raisable and lowerable in roll housings, particularly in a four-high skin pass stand or sizing stand operated with low rolling force. The chocks of one of the rolls have on their sides facing the roll housings a toothed segment and complementary toothed rails are arranged in the roll housings opposite the toothed segments and are movable toward and away from the toothed segments.

Abstract: An apparatus for the controlled cooling of hot-rolled sections, particularly beams, directly from rolling heat includes cooling sections or zones, wherein, seen with respect to the section to be cooled, a cooling section each is arranged above the section and on both sides of the section and below the section, and the cooling sections can be used individually or in combination, wherein each cooling section is composed of at least one nozzle or a group of interconnected nozzles, and wherein the nozzles can be controlled individually or together.

Abstract: A support structure for an oscillating continuous casting mold has fixed vertical support beams and oscillating frames attached to the fixed support beams by links with rigid intermediate portions connected by leaf spring hinges to the beams and the support frames.

Abstract: A method and an arrangement for operating a rotating starting shear operating in a start-stop operation on rolling stock travelling at different speeds in wire mills, light-section mills, medium plate mills and billet mills, wherein the shear, whose gear system is connected through a coupling to a drive motor, is accelerated from the position of rest to approximately rolling speed and, after the cut has been carried out, is stopped again. A gear mechanism is arranged between the gear unit of the shear and the drive motor, wherein torsion-proof couplings are arranged between the gear unit of the shear and the gear mechanism and between the gear mechanism and the drive motor.

Abstract: A method of operating a rolling mill stand of a rolling mill train and including upper and lower rolls having opposite roll edges, with the method including, rolling, in the rolling stand, a first metal strip having a first strip width, thereafter, after a rolling pause, rolling, in the rolling stand, a second metal strip having a second strip width, subjecting the rolls, during the rolling the first and second metal strip, to action of a cooling medium, and interrupting cooling of the rolls, at least in a contact region of the rolls with the second metal strip during rolling of the same, for a time period within the rolling pause between rolling of the first and second strips.

Abstract: A method and apparatus forproducing coated slabs of metal, particularly strips of steel, in which a metal slab is guided through the bottom of a vessel filled with molten metal having the same or different composition as the metal slab, wherein the dwell time of the metal slab is selected in dependence on the melting bath level, the casting speed, the metal slab thickness and the preheating temperature of the metal slab in such a way that the molten metal deposited on the metal slab has a desired thickness of a multiple of the initial thickness of the metal slab, and wherein the metal slab with the layer crystallized onto the metal slab is subjected to a smoothing pass after emerging from the melting bath. The smoothing pass is carried out when the surface temperature of the crystallized slab is smaller than the solidus temperature of the melting bath and, thus, at least the surface of the crystallized layer is solidified.