Abstract: A device for adjusting an object, for example a roll in a roll stand including a rotatably mounted pressure spindle and a torque motor having a stator and a rotor for rotationally driving the pressure spindle. In addition, the device includes a fixedly arranged pressure nut, which is engaged with the pressure spindle in a rotationally coupled manner via a thread to generate an axial movement of the pressure spindle in case of its rotation. Due to the axial movement generated in this way, the device can generate an axial adjustment force and transmit it to the object to be adjusted.

Abstract: A device for adjusting an object, for example a roll in a roll stand including a rotatably mounted pressure spindle and a torque motor having a stator and a rotor for rotationally driving the pressure spindle. In addition, the device includes a fixedly arranged pressure nut, which is engaged with the pressure spindle in a rotationally coupled manner via a thread to generate an axial movement of the pressure spindle in case of its rotation. Due to the axial movement generated in this way, the device can generate an axial adjustment force and transmit it to the object to be adjusted.

Abstract: The invention relates to a device for adjusting a roll in a roll housing 210 of a roll stand. The device comprises a motor for providing an adjusting force for the roll; a drive shaft 120 that can be actuated in a rotatory manner by the motor; and a pressure spindle for transmitting the adjusting force of the motor to the roll. In order to do away with the upstream worm gear used in the prior art, according to the invention, the motor is designed in the form of a hydro- or torque-motor, the pressure spindle 130 is provided with an axially oriented cylindrical receiving space on the motor-side end face 132, the drive shaft 120 can project into the receiving area of the pressure spindle, and the pressure spindle 130 and the drive shaft 120 are coupled to one another in a rotatory manner inside the receiving area.

Abstract: A device for handling and/or transporting work rolls and/or support rolls of a roll stand, by which the work rolls and/or support rolls can be brought from the roll stand into a roll workshop by a locomotive movable on a track. In order to be able to handle and transport different rolls using just one locomotive, without complicated coupling mechanisms, at least two tracks disposed at different heights are provided, on which a roll can be moved by the locomotive, and a lifting table is available, which is intended and suitable for raising or lowering the locomotive to one of the at least two different heights in order to bring it onto the respective track.

Abstract: The invention relates to a device (1) for handling and/or transporting work rolls (2, 3) and/or support rolls (4, 5) of a roll stand (6), by which the work rolls (2, 3) and/or support rolls (4, 5) can be brought from the roll stand (6) into a roll workshop (10) by means of a locomotive (9) movable on a track (7, 8). In order to be able to handle and transport different rolls using just one locomotive, without complicated coupling mechanisms, according to the invention at least two tracks (7, 8) disposed at different heights (h1, h2) are provided, on which a roll (2, 3, 4, 5) can be moved by means of the locomotive (9), and a lifting table (11) is available, which is intended and suitable for raising or lowering the locomotive (9) to one of the at least two different heights (h1, h2) in order to bring it onto the respective track (7, 8).

Abstract: The invention relates to a method for producing flat products of steel from continuously cast slabs having a large or medium thickness or from thin bars, which are compressed and subsequently run through a blooming train and a finishing train. The invention is characterized in that the flat products are descaled on their strip edges prior to compression. The method is carried out in a rolling train which comprises at least a first compression device (1), a blooming train and a finishing train. The rolling train is characterized in that a first descaling device (2) for descaling the strip edges of the flat products is arranged upstream of the first compression device (1).

Abstract: Disclosed is a device (1) for cooling metal sheets and strips during the production thereof, particularly following rolling thereof. Said device (1) comprises a feeding duct (2) for delivering a cooling medium, especially water. Said feeding duct (2) is connected to a housing (3) inside which two nozzle rails (4, 5) are disposed so as to be movable relative to one another. Said two nozzle rails (4, 5) can be arranged at a short distance (a) from each other, thereby forming a nozzle gap (6) for the cooling medium, said nozzle gap (6) having a rectangular cross section. At least one element (8) that forms a barrier for the cooling medium is placed in the housing (3) between the point of entrance (7) of the cooling medium into the housing (3) and the nozzle gap (6).

Abstract: Mercury is removed from solutions contaminated with mercury, the solution contaminated with mercury being introduced into a distillation column above the column bottom, solvent being distilled off and solution depleted in mercury being stripped off at the column bottom.

Abstract: Disclosed is a device (1) for cooling metal sheets and strips during the production thereof, particularly following rolling thereof. Said device (1) comprises a feeding duct (2) for delivering a cooling medium, especially water. Said feeding duct (2) is connected to a housing (3) inside which two nozzle rails (4, 5) are disposed so as to be movable relative to one another. Said two nozzle rails (4, 5) can be arranged at a short distance (a) from each other, thereby forming a nozzle gap (6) for the cooling medium, said nozzle gap (6) having a rectangular cross section. At least one element (8) that forms a barrier for the cooling medium is placed in the housing (3) between the point of entrance (7) of the cooling medium into the housing (3) and the nozzle gap (6).

Abstract: Mercury is removed from solutions contaminated with mercury by filtration through a carbon filter consisting of electrode graphite.

Abstract: The invention relates to an electrolysis cell for preparing liquid alkali metal from a liquid alkali metal-heavy metal alloy, which comprises a tube (1) which is arranged essentially horizontally and has a closure device (4) at each of the two ends of the tube (1), at least one solid electrolyte tube (12) arranged in the tube (1), which conducts alkali metal ions and is closed at one end and has an opening (11) at the other end, with the solid electrolyte tube (12) being arranged concentrically in the tube (1) and having the opening (11) facing one end of the tube (1) so that a first annular gap (13) for conducting the liquid alkali metal-heavy metal alloy which forms one anode is present between the inside of the tube (1) and the outside of the solid electrolyte tube (12), an interior space (14) in the solid electrolyte tube (12) for accommodating the liquid alkali metal which can be utilized as cathode, where the closure device (4) comprises an alkali metal-heavy metal alloy inlet (8) or outlet (9) op

Abstract: Mercury is removed from solutions contaminated with mercury, the solution contaminated with mercury being introduced into a distillation column above the column bottom, solvent being distilled off and solution depleted in mercury being stripped off at the column bottom.

Abstract: Mercury is removed from solutions contaminated with mercury by filtration through a carbon filter consisting of electrode graphite.

Abstract: The invention relates to a process for preparing alkali metal alkoxides by reacting alkali metals with alcohols in the presence of a catalyst, preferably a transition metal salt and especially iron(III) chloride.

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 device for adjusting a brush roll relative to a work roll in roll stand, particularly a roll stand for hot-rolling of aluminum includes pivotable supports mounted on both sides of the brush roll. The brush roll is rotatable in a direction opposite the direction of rotation of the work roll. The brush roll is displaceable in translatory movements parallel to the work roll. The pivot bearing of each brush roll support is arranged on a work roll chock, wherein the support includes a pivoting lever which is located between a controllable actuating element and a restoring support element. The actuating element is mounted in the balancing block or bending block of the roll stand and the support element is mounted in the chock.