Abstract: Provided is a roller assembly which includes: a supporter configured to rotatably support a roller disposed in a movement path of a to-be-treated material; a fixed shaft attached to a rear surface of the supporter and having at least a stretchable portion; a body attached to the rear surface side of the supporter so as to surround the fixed shaft; and a plunger attached so as to connect the body and the fixed shaft and formed so that at least a portion thereof advances and retreats with respect to the movement path, a casting device provided with the roller assembly, and a roller separating method, wherein the roller assembly is capable of separating the roller from the movement path during emergency.

Abstract: Conditions for soft reduction are determined in a method of continuous casting in accordance with a method utilizing the thickness of a slab strand to prevent center segregation from occurring in the strand due to an insufficient pressing rate or internal cracks from occurring in the strand due to an excessively high pressing rate.

Abstract: An up-drawing continuous casting apparatus includes a holding furnace that holds molten metal, a shape determining member that is arranged near a molten metal surface of the molten metal held in the holding furnace, and that determines a sectional shape of a casting by the molten metal passing through the shape determining member, and a cooling portion that cools the molten metal that has passed through the shape determining member. The shape determining member includes, on a main surface on the molten metal surface side, at least one of a protruding portion that protrudes from the main surface, or a recessed portion that is recessed from the main surface.

Abstract: There are provided a manufacturing method of a casting capable of easily manufacturing a casting having a complex form and of increasing the degree of freedom of form of the casting to be manufactured, a manufacturing device thereof and a casting. At the time of forming a casting by drawing out molten metal from a bath surface of a molten metal bath and solidifying the molten metal which has been drawn out, an outer contour unit configured from a plurality of outer contour defining members for defining the outer contour of a casting is arranged in a region between the bath surface of the molten meth bath and a solid region where the molten metal is solidified and the molten metal which has been drawn out from the bath surface is drawn out through a region determined by the outer contour unit, and the form of the casting is changed by moving at least one of the plurality of outer contour defining members according to the drawing out of the molten metal.

Abstract: A method for adjusting a roll segment of a strand guide of a slab-casting installation against a strand, wherein the roll segment has an upper and a lower roll support that each have an adjusting element for adjusting the two roll supports relative to each other. The method includes individual control of the individual adjusting elements, wherein the actual profile of the strand, including the heights of the right and left lateral edges of the strand, is detected and compared with a set profile that includes a predetermined set height, which is the same for the right and left lateral edges, and the individual adjusting elements of the roll segment are individually controlled based on the control deviation that results from the comparison so that the actual profile is adapted to the set profile, including equalization of the heights of the right and left lateral edges of the strand.

Abstract: The present invention provides a technique capable of decreasing a generation of splashing upon depositing by using an Al—Ni—La—Cu alloy sputtering target comprising Ni, La, and Cu. The invention relates to an Al—Ni—La—Cu alloy sputtering target comprising Ni, La and Cu, in which (1) a total area of an Al—Ni intermetallic compound mainly comprising Al and Ni and having an average grain size of 0.3 ?m or more and 3 ?m or less is 70% or more by area ratio based on an entire area of the Al—Ni intermetallic compound, and (2) a total area of an Al—La—Cu intermetallic compound mainly comprising Al, La and Cu and having an average grain size of 0.2 ?m or more and 2 ?m or less is 70% or more by area ratio based on an entire area of the Al—La—Cu intermetallic compound, in a case where a portion of the sputtering target is observed within a range of from ¼t (t: thickness) to ¾t along a cross section vertical to a plane of the sputtering target by using a scanning electron microscope at a magnification of 2000.

Abstract: A continuous casting device including at least a crystallizer suitable for casting a metal product, and a plurality of guide and containing segments with rolls, the function of which is to accompany the cast product exiting from the crystallizer. The device includes, an extension of or in an intermediate position to one or more of the guide and containing segments with rolls, one or more guide and containing segments of the mixed type with panels and rolls, each including one or more guide rolls disposed on at least one side of the product and insulated and/or reflecting and/or heated panels disposed on the opposite side of the product, so as to reduce the loss of temperature of the cast product in transit.

Abstract: A method of fabricating a steel strip (1) including a) providing a functional relationship in a machine controller (8) between a slab casting speed (v) or the mass flow as a product of casting speed and strip thickness or as a product of strip speed and strip thickness and the strip temperature (t) downstream of the last rolling stand (7) for a different number (n) of active rolling stands (7) and different final thicknesses, b) determining or specifying the casting speed (v) or the mass flow (v×H) and feeding the determined value into the machine controller (8), and c) determining the optimum number of active rolling stands (7) and the final thicknesses and thickness reductions which can be rolled with them in the rolling train using the functional profiles.

Abstract: The invention concerns a roller and a roller arrangement for a continuous casting installation comprising two bearing blocks and the roller carried by the bearing blocks, wherein the roller has a rotationally symmetrical roller casing and wherein the roller bearing is arranged within the roller casing.

Abstract: A continuous-casting unit produces a longitudinally extending and traveling strand having a solid shell and a liquid core. A strand-guiding apparatus has a plurality of longitudinally spaced section frames and respective pairs of roller assemblies carried on the frames and transversely flanking and bearing transversely on the strand. Each pair forms a gap through which the strand passes, and each roller assembly is formed by two aligned subrollers. A respective center is provided bearing between the subrollers of each roller assembly and bracing inner ends of the respective subrollers transversely against the respective frame. Respective outer rollers at outer ends of the subrollers of each roller assembly brace the respective outer ends transversely against the respective frame. The subrollers are shaped or supported on the respective frame such that in an unloaded condition the gap is transversely narrower at the center bearing than at the outer bearing.

Abstract: A method for adjusting a roll segment of a strand guide of a slab-casting installation against a strand, wherein the roll segment has an upper and a lower roll support that each have an adjusting element for adjusting the two roll supports relative to each other. The method includes individual control of the individual adjusting elements, wherein the actual profile of the strand, including the heights of the right and left lateral edges of the strand, is detected and compared with a set profile that includes a predetermined set height, which is the same for the right and left lateral edges, and the individual adjusting elements of the roll segment are individually controlled based on the control deviation that results from the comparison so that the actual profile is adapted to the set profile, including equalization of the heights of the right and left lateral edges of the strand.

Abstract: A method for the continuous casting of thin metal strip in a continuous casting installation, in which metal is discharged vertically downward from a mold, the metal strip is deflected from the vertical direction to the horizontal direction, and the metal strip is supported and/or conveyed and/or plastically deformed by a number of pairs of drive rolls. At least one pair of drive rolls plastically deforms the metal strip without significantly changing the mean thickness of the metal strip, namely with a change in the mean thickness of the metal strip of less than 5%, such that the deformation in the pairs of drive rolls produces material flow exclusively in the direction transverse to the direction of conveyance of the metal strip.

Abstract: A strand guide for a cast strand has a first roller bridge to one wide side of the cast strand and having ends defining two first section corners, a first fixed support adjacent the first roller bridge, a second roller bridge to the opposite wide side of the cast strand and having ends defining two second section corners, and a second fixed support adjacent the second roller bridge. Respective rows of rollers are rotatably mounted on each of the first and second roller bridges for engaging the respective wide sides and thereby supporting and guiding the cast strand. Respective first and second hydraulic positioners connect the first and second corners of the first and second roller bridges to the first and second fixed supports for individual positioning the rollers of the first and second roller bridges symmetrically or asymmetrically relative to the neutral phase of the cast strand.

Abstract: The invention relates to a method and a device for guiding and orienting a strand (5) in a continuous casting facility for large-sized round sections made of steel or a similar material. In order to prevent the formation of cracks while the strand is oriented, the outer surface (15) of the strand is heated from above and from below inside the orienting track. For this purpose, porous burners (10, 17) are arranged in the discharge section of the directing track, the hot gas emitted from said burners flowing entirely around the outer surface (15) of the strand.

Abstract: A continuous casting installation, which has a vertically oriented strand guide arranged below a mold, wherein a drive for driving the cast strand and bending it into the horizontal direction are arranged below the strand guide. A drive that serves exclusively for driving the cast strand is installed below the lower end of the strand guide, and a drive that serves exclusively for bending the cast strand is installed below the drive for driving the cast strand. The drive that serves exclusively for driving the cast strand is installed at least partially in a cassette, which is detachably mounted in the continuous casting installation. The continuous casting installation also has a cooling chamber, and the cassette with the drive that serves exclusively for driving the cast strand is installed in the cooling chamber.

Abstract: Apparatus (300, 400) for laying an elongate member such as a pipe (306) or a rail (472). Material carried by the apparatus is smelted in a furnace (340) and fed to a casting head (342) by which the elongate member is continuously cast. The so cast elongate member is then laid by the apparatus, as it travels on the ground surface.

Abstract: A method and continuous casting device for dynamically placing rolling segments against a cast bar made of metal, particularly steel. The continuous casting device is a bloom or billet casting device and has pairs of rollers that are placed against each other in a position-controlled and pressure-controlled manner by piston-cylinder units. The hydraulic pressure is switched from position-controlled operation to pressure-controlled operation when a threshold pressure is reached. The roller segments are arranged in the hot bar zone and the soft reduction zone.

Abstract: A system and method for tracking and positioning a continuous cast strand in a casting plant. Lateral positions and, optionally, elevational positions of a cast strand are monitored by sensors as casting proceeds and are fed to a computer-based system as corresponding position information where the information is stored as associated data. The computer-based system processes the associated data and generates corresponding control signals which are used to control at least one correcting device to maintain desired orientation of the cast strand as casting proceeds.

Abstract: A method and device for driving the support rolls of a continuous casting machine for liquid metals, which support rolls form a strand guide for the continuously cast strand. The strand guide includes electrically driven individual support rolls and/or hydraulically adjustable support roll segments. An automatic load balance control system for the drives is used as the sum of the individual forces for casting speed, motor torque, motor speed, and standard correction factors and is provided with individual adjustment of torque and speed of each drive support roll motor. A total driving torque for all drives is determined from the normal force of the driven drive support rolls and proportionately transmitted to each support roll in such a way that a static base setting of the torque distribution is used as the basis for the specific load capacity of each drive support roll.

Abstract: Pinch roll apparatus has a pair of pinch rolls each having a diameter between 300–1500 millimeters positioned to form a nip through which metal strip can be continuously fed. The pinch rolls are positioned one above the other with the axes of the pinch rolls offset in the direction of travel of strip, with the upper pinch roll offset positioned between 10 and 130 mm downstream of the direction of travel of the strip through the pinch rolls. A rotational drive counter rotates the pinch rolls to cause strip to pass through the nip of the pinch rolls. A tilt drive tilts the upper pinch rolls by a tilt between 0.5 and 5.0 mm to control steering of the strip passing through the pinch rolls. The steering of the tilt drive may be automatically controlled through a controller actuated by a sensor.

Abstract: A method for producing thin slabs whereby the cross-section thereof is reduced during solidification in a continuous casting device wherein the strand guide adjacent to the mold includes wedge-shaped adjustable roller-strand sections for regulating the thickness of the strand or the thin slabs. The thickness of the strand is reduced only on one point of the strand guide below the first segment downstream from the mold in an area of the strand containing a liquid core by regulating the strand guide rollers with a soft transition. The segment following the segment situated directly after the mold comprises a pivoting point on the input side and an adjusting means arranged on the output side.

Abstract: Pinch roll apparatus has a pair of pinch rolls each having a diameter between 300–1500 millimeters positioned to form a nip through which metal strip can be continuously fed. The pinch rolls are positioned one above the other with the axes of the pinch rolls offset in the direction of travel of strip, with the upper pinch roll offset positioned between 10 and 130 mm downstream of the direction of travel of the strip through the pinch rolls. A rotational drive counter rotates the pinch rolls to cause strip to pass through the nip of the pinch rolls. A tilt drive tilts the upper pinch rolls by a tilt between 0.5 and 5.0 mm to control steering of the strip passing through the pinch rolls. The steering of the tilt drive may be automatically controlled through a controller actuated by a sensor.

Abstract: The invention relates to an apparatus for continuous casting of metal billets comprising a horizontal casting mold having and inlet end and an outlet end. It includes a feed trough for feeding molten metal to the mold inlet end and a horizontal conveyor for receiving a cast billet from the mold outlet end. A moveable cutting saw is operable to move synchronously with the conveyor for cutting a continuous billet into lengths while supported on the conveyor. The billet is resiliently supported and the saw mechanism is isolated so as to minimize transmission of low and high frequency vibrations from the cutting and conveying operations to the mold.

Abstract: A continuously cast strand is subjected to soft reduction between the guide rollers below the mold and between the soft reduction stretch and the mold the strand is subjected to format or thickness reduction between at least one pair of position controlled guide rollers so that independently of the quality of the steel, the casting speed and the spray cooling, the position of the type of the mold cavity and hence the molten steel therein is maintained constant along the soft reduction stretch.

Abstract: A method for producing steel slabs, whereby the strand leaves an ingot mold with melt enclosed by a strand shell and, in a strand guide located downstream, the opening width of guide rolls mounted in segments with upper and lower frames can be set in a continuous manner with successive steps by adjusting elements that join said guide rolls. An oscillation around a center line of the opening width serves to modify the opening width in order to render the dynamic influences on the guide rolls negligibly small. The amplitude of the opening width oscillation is set to ta quantity, which des not provoke any plastic deformation of the strand shell. The actual opening width of the guide rolls is detected and the actuating force of the adjusting elements as well as the amplitude of the actuating force are determined at the same time.

Abstract: The invention relates to a method and to an installation for producing a metal strip. The aim of the invention is to make sure that the metal strip formed in the casting installation passes through the first cooling and grain texturing phase substantially without being subjected to stress and without effects on the subsequent installations. To this end, the molten bath is fed to a two-roll casting device and a cast metal strip is formed in the casting gap between two casting rolls whose rotational axes lie in a horizontal plane (two-roll casting method), the thickness of the cast strip ranging between 1.0 to 20 mm, preferably between 1.5 to 12 mm. The cast metal strip that freely emerges downwards from the two-roll casting installation is directly deflected from the vertical casting direction to a substantially horizontal transport direction. The metal strip is taken up and conveyed in a controlled manner by means of a first drive roll stand that operates at a first transport speed.

Abstract: The secondary cooling and the strand support are matched to the cooling state of a continuously cast strand cross section. The secondary cooling and support are reduced in dependence upon the solidification profile of the cast strand along the distance traveled.

Abstract: The invention relates to a strip guide for a strip casting unit, comprising at least two segments, in particular roller segments (1-4), each with a strip input side (2.1) and a strip output side (3.1) and a pair of roller supports, each with a number of support rollers (5), running along a support region. The roller supports are adjustable by means of, in particular, hydraulic adjuster units (8). According to the invention, the strip guide can be more flexibly embodied and the assembly and disassembly times reduced, whereby a mechanical connection (9) is provided between neighbouring segments (1-4) and, on fitting a cylinder pair (8.1-8.4) to the strip input side (2.1) of a segment (1-4), the adjustment movement occurs both on said side (2.1), as well as simultaneously on the strip output side (3.1) of a previous segment connected thereto. On fitting a cylinder pair (8.1-8.4) to the strip output side (3.1) of a segment (1 4), the adjustment movement thereof affects said side (3.

Abstract: The invention relates to a strip guide for a strip casting unit, comprising at least two segments, in particular roller segments (1-4), each with a strip input side (2.1) and a strip output side (3.1) and a pair of roller supports, each with a number of support rollers (5), running along a support region. The roller supports are adjustable by means of, in particular, hydraulic adjuster units (8). According to the invention, the strip guide can be more flexibly embodied and the assembly and disassembly times reduced, whereby a mechanical connection (9) is provided between neighbouring segments (1-4) and, on fitting a cylinder pair (8.1-8.4) to the strip input side (2.1) of a segment (1-4), the adjustment movement occurs both on said side (2.1), as well as simultaneously on the strip output side (3.1) of a previous segment connected thereto. On fitting a cylinder pair (8.1-8.4) to the strip output side (3.1) of a segment (1 4), the adjustment movement thereof affects said side (3.

Abstract: The invention relates to a device for the continuous casting of metals, especially steel, for use in a solidified-bending method. Said device comprises, downstream of the continuous casting mold, a straight strand guide (1) and a bending device (3) that releases the cast strand path (2a) so that the cold strand (5) can be introduced. The object of the invention is to utilize the height of the device that has so far not been used for supporting the strand or to reduce the height of the entire installation. To this end, the bending device (3) comprises a folding segment (9) that is pivoted on the fixed side (1a) and that is provided with a row of rollers (10) that limit the bending path (3c) in the operational position. The bending device further comprises on the loose side (1b) a loose element (11) that can be swiveled into the operational position (3b) or that can be swiveled out from this position.

Abstract: A a process for producing slabs from steel, in which the strand leaves a permanent mold with liquid melt enclosed by the strand shell and, in a downstream strand guiding assembly, the gap between guide rollers mounted in stands is set infinitely variably by adjusting elements connecting lower and upper frames, characterized by the following steps: a) the gap(s) is changed by an oscillation about a predeteminable center line (c) of the gap in such a way that the dynamic influences on the guide rollers are negligible, and no plastic deformation of the strand shell occurs; b) the current gap (s) is recorded, c) at the same time, the actuating force (F) of the adjusting elements and the amplitude (A) of the actuating force are determined, and d) with increasing amplitude (A) of the actuating force (F), the gap (s) is set to a predeterminable value and/or is pressure-controlled by at least one adjusting element.

Abstract: A method and strand guide for supporting, guiding and cooling casting strands (1) made of steel, especially preliminary sections (2) for girders, which are cooled by injected water (29) and are drawn, serve to prevent cracks, especially surface cracks, from appearing in the microstructure by adapting the cooling conditions of the surface of the strand in the region of the secondary cooling, and serve to prevent undercooling of the strand shell, wherein in order to avoid an undesirable solidification structure on the upper flange edges or in other cross-sectional areas, the cooling and support of the beam blank format are so adapted to the solidification range that cooling and support are provided exclusively where a crater is formed.

Abstract: In a continuous-casting plant, the segments of the guide for the casting bar are replaced rapidly, at least in part, using a two-station system, at least one of which stations being mobile, so as to be able to align head on a platform provided with means for hooking and extracting the said guide with the structure containing the guide itself. Once this alignment is obtained, the guide is displaced from one station to the other, its segments are replaced, and the guide is brought back into the original position.

Abstract: A method and a device for adjusting one or more roll segments (1) in a continuous casting installation for metals, especially for steel materials, the rolls (1a) of which adjusted in the segment upper frame (2) and the segment lower frame (3) on frame cross members (5) by pairs (4) of hydraulic piston-cylinder units in a position-and/or pressure-controlled manner, wherein an operation for guiding and/or pressing the casting strands (6) is switched from a position-controlled to a pressure-controlled operation when pressure within the respective pair (4) of piston-cylinder units reaches a predetermined maximum value, whereby an improved reaction is effected by operating the piston-cylinder unit of every roll segment (1) in the case of overload, in subsequent steps at a reduced pressure or in a pressureless switching mode until the switching mode is reached in which the segment upper frame (2) can be opened to some extent.

Abstract: A method for cooling a cast product in the essentially vertical continuous casting of metals, taking place in an upward direction, in particular in the continuous casting of wires, rods and tubes of non-ferrous metals, in which method the casting nozzle and primary cooler are at least partially inserted in the melt inside the furnace and the metal is cast through them, whereby the product to be cast is first cooled inside the casting nozzle as the primary cooling. In addition to primary cooling, the product to be cast (3, 3′) is cooled outside the furnace (1) walls at least in one another cooling stage by a jet (6) of cooling agent directed onto the surface of the product to be cast, in such a way that the passage of cooling agent into the melt within the furnace is prevented.

Abstract: The invention relates to a method and the apparatus required for carrying out the method for the continuous production of billets or ingots of metals, in particular steels and Ni- and Co-base alloys using the method of electroslag remelting and electroslag continuous casting in downwardly open water-cooled ingot molds, in which the billet issuing downwardly from the ingot mold is pressed against at least one guide element arranged rigidly in respect of its position with respect to the ingot mold axis, by at least one clamping element arranged opposite the guide element, in such a way that the regions of the billet surface which are in contact with the guide or clamping elements change within short intervals of time, wherein at least one of the elements is driven to withdraw the billet while the others move with the billet and a contact with a current source can be made by way of at least one of the elements.

Abstract: Method and device to control the axial position of slabs emerging from continuous casting applied in rolling plants comprising at least a casting machine (11), a heating and/or temperature maintenance furnace (15) and a roughing and prefinishing (16) or finishing train (19) comprising at least one rolling stand (17), the method serving to align the axis (32) of a slab (24) entering the furnace (15) with the axis (25) of the first rolling stand (17), the method providing to control the axial position of the slab (24) and to activate at least a thruster element (26) able to be introduced inside the furnace (15) to act on the edge of the slab (24) and displace it laterally according to a measured discrepancy between the axis (32) of the slab (24) and the axis (25) of the rolling stand (17), wherein the thruster element (26) has a contact element (28) able to cooperate with the edge of the slab (24) advancing inside the furnace (15).

Abstract: In a method for changing a billet section of a continuous billet casting device from an initial section to a final section, the opposed billet sides interact with oppositely positioned roll supports of a billet guide arranged below a continuous casting die. The roll supports have segments with rolls, and each segment is individually adjustable with respect to its angular position relative to the billet. A controlled sequence of adjusting steps of the segments successively arranged in a direction of continuous casting is carried out, wherein, for reducing the section of the billet, the segments are advanced successively toward the billet in the continuous casting direction and, and for increasing the section of the billet, the segments are moved successively away from the billet in the continuous casting direction.

Abstract: A disadvantage of continuously casting thin metal strips in a continuous casting plant (1) wherein the casting strand (7) exits the mould (2) in a downward direction and is guided in a vertical strand guide (3) with the help of pairs of driver rolls (4, 5) for supporting and conveying the strand (7), is that the force with which the driver rolls (4, 5) are pressed against the strand (7) results in the unchecked rolling of the strand while it is still soft. The aim of the invention is to solve this problem. To that end, the driver rolls (4, 5) are pressed against the strand (7) with a variable pressure (P1, P2) which is regulated “on-line” in accordance with the thickness (d3, d4) of the strand (7), in such a way as to obtain and maintain a constant strand thickness.

Abstract: A method for detecting a misaligned roller portion of a roller in a continuous casting machine, in which the machine includes rollers arranged in a row after each other, with the rollers being divided into at least two roller portions each rotatably mounted in supporting members and arranged for transporting produced material. The method involves measuring the radial load exerted by the material on each supporting member of the roller portions of a roller, comparing the radial loads of the supporting members at the outer ends of the roller with each other, comparing the radial loads of the supporting members at the inner ends of the roller with each other, and determining a misaligned roller portion where the divergence between the radial loads of the supporting members of the outer ends of the roller and/or the supporting members of the inner ends of the roller exceed a predetermined value.

Abstract: Among the slab-supporting guide roll pairs disposed in the region in which a liquid core exists within the slab, at least four consecutive guide roll pairs are disposed under such conditions that the roll axis-to-axis distances on the fixed side and loose side of the guide roll pairs and the roll halfway-to-halfway distances on the fixed side and loose side are all different from one another. Casting is carried out while disposing the guide roll pairs under sucb conditions.

Abstract: A strand pulling-off method for a metal strip cast in a curved continuous casting plant and a curved continuous casting plant, wherein the metal strip is initially pulled vertically from a casting mold using a curved entry segment driven with an entry speed. A curved shape is imparted to the metal strip in the curved entry segment such that the metal strip travels in a circular arc. The metal strip is straightened after reaching a horizontal strip travel direction using a curved exit segment driven with an exit speed and conveying the metal strip out of the curved exit segment.

Abstract: A roll for use in a continuous casting machine includes a roll body that is constructed and arranged to be mounted for rotation in a guide segment area of a continuous casting machine, and a generally cylindrical outer surface on the roll body. Preferably, the outer surface is fabricated at least in part from an age-hardenable nickel-based alloy that includes, in weight percent, up to 0.3% carbon, about 5% to about 12% chromium, and about 10% to about 30% molybdenum. The roll exhibits superior high temperature strength and stability, low thermal expansion, and superior oxidation resistance at temperatures that are typical during operation in a continuous casting machine. A process of making a metal casting using such a roll is also disclosed.

Abstract: The present invention relates to an adjusting method for a roller section of a continuous casting machine which is provided with a section input side (6), a section output side (7) and a pair of roller carriers (1, 2) which each carry at least two rollers (3) extending over a supporting zone (4), with the roller carriers (1, 2) being mutually adjusted against one another by way of an adjusting unit arranged at the section input side (6) and at the section output side (7), with each adjusting unit being provided with two hydraulic cylinder units (8 to 11) arranged on either side of the supporting zone (4), characterized in that the hydraulic cylinder units (8 to 11) can be adjusted both in a position-controlled and pressure-controlled manner; the rollers (3) are placed in a position-controlled manner by the hydraulic cylinder units (8 to 11) against a metal billet (5) which is guided by the rollers (3); the hydraulic cylinder units (8 to 11) are changed over from position-controlled to pressure-controlled o

Abstract: In a method for casting prefabricated products in a continuous casting device, having a casting mold and a strand guide downstream of the casting mold, wherein the strand guide has rolls positioned opposite one another in pairs for supporting and guiding the solidifying cast strand. The motor torques of the drives are maintained at a level as equal as possible below a permissible torque limit value relative to a loadability of the strand shell. For a single drive and corresponding drive roll the permissible torque limit value is measured by continuously increasing the drive torque starting at zero and monitoring the rotational speed of the drive roll, while the remaining drive rolls are controlled to a preset nominal casting speed. For a superproportional increase of the rotational speed, the torque limit value is determined and the process is stopped.

Abstract: Method and device to control the axial position of slabs emerging from a continuous casting machine, providing to control the axial position of the slab (24) in correspondence with the inlet to the first rolling stand and to act in feedback on means to modify the correct position of the axis (32) of the slab (24) in a position located between the first rolling stand and the foot rolls (26) of the ingot mold (13) from which the slab (24) emerges, wherein alignment means operating inside the furnace (15) are employed to induce a controlled lateral displacement governed by the control of the axial position of the slab (24).

Abstract: The invention relates to a method for guiding strands in a continuous casting installation, in particular an installation for producing thin slabs made of steel, having an ingot mold and a strand-guidance frame which is provided with a cooling device. In this case, heat is extracted indirectly from the strand after it leaves the ingot mold, and the strand, at least in sections, is held in shape, guided in the strand discharge direction and additionally cooled by means of a gaseous medium. Furthermore, the strand is additionally moved in a defined manner and at a predeterminable speed through the strand frame by mechanical means, the speed of the strand being accelerated or decelerated.

Abstract: A strand pulling-off method for a metal strand, particularly a steel strip, cast in a curved continuous casting plant, wherein the metal strand is initially vertically pulled from a casting mold, wherein a curved shape is then imparted on the metal strand in a curved entry driver driven with an entry torque, and wherein, after reaching a horizontal strand travel direction, the metal strand is finally straightened in a curved exit driver driven with an exit torque. An entry speed is assigned to the curved entry driver and an exit speed is assigned to the curved exit driver, the entry torque and the exit torque are determined, and the exit speed is adjusted in such a way that the entry torque as well as the exit torque have a positive value.

Abstract: The invention relates to a device for positioning a die block (5) of a casting table (1) of a continuous vertical ascendant casting machine for pipes (T) with respect to a vertical axis of extraction (X—X), the die block (5) of the machine being fed by means of a device (3) for the supply of liquid iron, and bearing thereon.

Abstract: In a strand guide for a continuous casting plant comprising a plurality of strand supporting elements for supporting the strand, in particular support segments carrying supporting rollers, several support segments being fastened adjacent each other on a supporting framework designed in one piece in its longitudinal extension, each support segment is fastened to the supporting framework by a fixed bearing and a movable bearing spaced apart therefrom in the longitudinal extension of the strand guide, each support segment, by at least one bearing, is pivotally mounted to the supporting framework so as to be pivotable about an axis, the axis being oriented transversely with respect to the longitudinal extension of the strand guide and horizontally, as well as in a vertical plain passing through the longitudinal extension of the supporting framework and by at least one bearing is mounted so as to be adjustable with respect to the supporting framework in a direction toward the pivoting movement of the support segme