Abstract: A device for the hydraulic positioning of structural component parts, in particular rollers of strand guide segments of a continuous casting installation, with hydraulic cylinders, each of which is divided into a cylinder space and an annular cylinder space by a piston having a piston rod. The cylinder spaces can be connected to a pressure source by of control members. Hydraulic connection lines are reduced or components used are reduced. Either the annular cylinder space is acted upon by a pressure which is adjustable but which then remains constant, while the pressure applied to the piston in the cylinder space is position-controlled or pressure-controlled, or the cylinder space is acted upon by a pressure which is adjustable but which then remains constant, while the pressure applied to the piston in the annular cylinder space is position-controlled or pressure-controlled.

Abstract: A continuous casting installation (20) including a strand guide having strand casting segments with rollers (2) for guiding a cast strand, wherein at least one of the strand casting segments (22, 23, 24, 25, 26, 27) is formed as a measurement segment, wherein there is provided at least one measurement point for direct or indirect determination of a force acting on one or several rollers (2), wherein further the at least one measurement point is provided on a support housing (30), preferably between the support and the segment frame of strand casting segment, and there is provided a data processing unit that based on data of the at least one measurement point determines the solidification states of the cast strand.

Abstract: Disclosed is a vibration damper comprising a cylinder in which a piston rod is guided in an axially movable manner. A first piston is mounted stationarily on the piston rod while a second piston that is equipped with at least one valve disk biased by a spring assembly is mounted on the piston rod so as to be axially movable counter to a force of at least one support spring. The spring assembly is provided with at least one spring plate on which the spring assembly rests. The second piston is retained by a fixing sleeve which supports the at least one spring plate. The structural unit encompassing the fixing sleeve and the at least one spring plate is fitted with an axially effective separating joint for a locking connection inside the structural unit. The entire structural unit can be axially displaced towards the at least one support spring.

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: The invention relates to a continuous casting installation (20) including a strand guide having strand casting segments with rollers (2) for guiding a cast strand, wherein at least one of the strand casting segments (22, 23, 24, 25, 26, 27) is formed as a measurement segment, wherein there is provided at least one measurement point for direct or indirect determination of a force acting on one or several rollers (2), wherein further the at least one measurement point is provided on a support housing (30), preferably between the support and the segment frame of strand casting segment, and there is provided a data processing unit that based on data of the at least one measurement point determines the solidification states of the cast strand.

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: The invention relates to a vibration damper, comprising a cylinder (5) that is filled with damping medium, in which a piston rod (7) is guided in an axially movable manner by a piston rod guide (3), the lateral surface of the piston rod guide lying against an inner wall of the cylinder (5) and the piston rod guide being sealed in the direction of a working area at the piston rod end, the area of contact between the lateral surface (17) and the cylinder (5) relative to the working area (11) at the piston rod end having on the other side of the sealing area (23) at least one outlet (25, 29) in the direction of an outer end face (31) of the vibration damper.

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: A device for the hydraulic positioning of structural component parts, in particular rollers of strand guide segments of a continuous casting installation, with hydraulic cylinders, each of which is divided into a cylinder space and an annular cylinder space by a piston having a piston rod. The cylinder spaces can be connected to a pressure source by control members. Hydraulic connection lines are reduced or components used are reduced. Either the annular cylinder space is acted upon by a pressure which is adjustable but which then remains constant, while the pressure applied to the piston in the cylinder space is position-controlled or pressure-controlled, or the cylinder space is acted upon by a pressure which is adjustable but which then remains constant, while the pressure applied to the piston in the annular cylinder space is position-controlled or pressure-controlled.

Abstract: The invention relates to a vibration damper, comprising a cylinder (5) that is filled with damping medium, in which a piston rod (7) is guided in an axially movable manner by a piston rod guide (3), the lateral surface of the piston rod guide lying against an inner wall of the cylinder (5) and the piston rod guide being sealed in the direction of a working area at the piston rod end, the area of contact between the lateral surface (17) and the cylinder (5) relative to the working area (11) at the piston rod end having on the other side of the sealing area (23) at least one outlet (25, 29) in the direction of an outer end face (31) of the vibration damper.

Abstract: The invention relates to a method for the continuous casting of thin metal strip (1) in a continuous casting installation (2), in which method metal leaves a die (3) vertically downwards, wherein the metal strip (1) is bent out from the vertical direction (V) into the horizontal direction (H) and wherein the metal strip (1) is supported and/or conveyed and/or plastically deformed by means of a number of pairs of driving rollers (4, 5, 6, 7, 8, 9, 10). In order to avoid a drop in quality, in particular when changing the casting parameters, it is provided according to the invention that at least one pair of driving rollers (8, 9, 10) plastically deforms the metal strip (1) without significantly changing the average thickness (d) of the metal strip (1). Furthermore, the invention relates to a continuous casting installation, in particular for carrying out this method.

Abstract: Disclosed is a vibration damper comprising a cylinder in which a piston rod is guided in an axially movable manner. A first piston (7) is mounted stationarily on the piston rod while a second piston (23) that is equipped with at least one valve disk biased by a spring assembly is mounted on the piston rod so as to be axially movable counter to the force of at least one support spring. The spring assembly is provided with at least one spring plate (39, 41) on which the spring assembly (33, 35) rests. The second piston (23) forms a structural unit along with a fixing sleeve (37) and the at least one spring plate for the spring assembly. The at least one spring plate is mounted in an axially movable manner relative to the fixing sleeve (37) and can be fixed in the desired axial position in order to adjust the bias of the spring assembly.

Abstract: Disclosed is a vibration damper comprising a cylinder in which a piston rod is guided in an axially movable manner. A first piston is mounted stationarily on the piston rod while a second piston that is equipped with at least one valve disk biased by a spring assembly is mounted on the piston rod so as to be axially movable counter to a force of at least one support spring. The spring assembly is provided with at least one spring plate on which the spring assembly rests. The second piston is retained by a fixing sleeve which supports the at least one spring plate. The structural unit encompassing the fixing sleeve and the at least one spring plate is fitted with an axially effective separating joint for a locking connection inside the structural unit. The entire structural unit can be axially displaced towards the at least one support spring.

Abstract: The invention relates to a method and a device for driving support rollers (7c) on a continuous casting machine for molten metals, in particular, for molten steel materials, comprising a strip guide (7) of electrically-driven individual drive support rollers (7c) or hydraulically adjustable strip support roller segments (9) for the improvement of a load equilibration control (12), whereby a total drive moment for all drives (10), determined from the normal force of the driven drive support rollers (7c) is proportionately transmitted to each drive support roller (7c) and a static base setting for the torque distribution is used as the basis for the load capacity of each drive support roller (7c).

Abstract: Disclosed are a method and a continuous casting device for dynamically placing roller segments (13 to 17) against a cast bar (4) made of metal, particularly steel. The inventive continuous casting device comprises pairs of rollers (18) which are placed against each other in a position-controlled and pressure-controlled manner by means of piston-cylinder units (19), the hydraulic pressure being switched from position-controlled operation to pressure-controlled operation when a threshold pressure is reached. In order to extend the range of applications of the inventive method, said method is applied to roller segments (13 to 17) of continuous bloom and billet casting devices, said roller segments (13 to 17) being arranged in the cold bar zone, hot bar zone, or soft reduction zone.

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 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.