Abstract: A process and a device for introducing gases into a metal melt contained in metallurgical vessels via ducts arranged in the refractory lining of the vessel. In order to permit deeper penetration of the jet of gas and better mixing with the melt, an oscillating jet of gas is produced and introduced into the melt. For this purpose, several acoustic generators with which the gas is brought into contact with the melt are provided in the device.

Abstract: A device for changing a roll disk arranged in a free-floating fashion on a roll shaft and braced against a shoulder of the roll shaft, the device including a roll shaft piece connectable to an end face of the roll shaft and having radially projecting claws. An installation-and-removal unit is placeable on and coaxially turnable to the roll shaft. The unit has radially extending first, second and third claws that form perimeter segments. The first claws correspond to and engage with the claws of the roll shaft piece. A taper bushing is slidably provided between the roll disk and the roll shaft to hold the roll disk on the roll shaft, and has radially extending claws. The second claws correspond to and engage with the taper bushing claws, and are also moveable axially to the roll shaft. A ring is coaxially mounted on a side of the roll disk facing the unit, and has radially extending claws that correspond to and engage behind the third claws.

Abstract: A transfer system for the exchange of data between dispersed devices in stored program controls with feedback over the process that is to be controlled. For the real time data transfer between a plurality of central processing units as well as between I/O components and the respectively allocated central processing units, aside from a system bus with nonpersistent access behavior, at least one lateral bus is provided, the transfer protocol of which includes a priority-persistent access behavior and at which at least two central processing units are connected. Moreover, at least one I/O bus is allocated to each central processing unit. The transfer protocol of the I/O bus, which is connected to at least one I/O device, includes a priority-persistent access behavior. Devices for configuring, controlling and observing are connected to the system bus in the waiting area. Sensors and actuators are connected to the I/O devices.

Abstract: An apparatus for gripping and weight-dependent clamping of workpieces, bar guides and the like that are to be held or moved relative to a location, particularly in connection with a hand-guided handling device that has a control switch. The apparatus includes a carrying frame to which are linked upper hinge-bolt pairs for respective superimposed pairs of parallel rods, which are detachably attached by pairs of lower hinge-bolts to a connection piece for gripping elements. A pair of struts, each of which is linked to one lower hinge-bolt, is jointly attached in articulated fashion to a control bolt centrally adjustable between the rods in a guide slot on the carrying frame.

Abstract: A process for the producing of pipes, in particular large pipes, by the UOE process, in which the pipes are sized by cold expansion after internal and external seam welding. In order to render the strength characteristics and deformation characteristics substantially homogeneous in the circumferential direction of the pipe and in order to adjust determined characteristics in a directed manner, the pipes are conditioned by a combined application of cold expansion and cold reduction. The sequence and degree of expansion and reduction, respectively, are established depending on the required profile.

Abstract: A process and device for preventing nonparallelism from occurring when rolling beams on universal beam rolling trains by partial application of coolant to the beams. The coolant is applied to the underside of the web during the rolling process in order to create an approximately symmetrical temperature profile in the web.

Abstract: A two-platen injection molding machine with a stationary mold carrier plate and a movable mold carrier plate which are connected via tiebars having piston-cylinder units which build up and cancel the clamping force. At least one driving cylinder is arranged at the carrier plates for quick driving movement thereof. The tiebars are constructed as loose clamping pins forming the piston rod of the piston-cylinder units. The tiebars are guided through the movable mold carrier plate and the stationary mold carrier plate, and have a hydraulic high-pressure closing unit and a quick-locking mechanism mounted thereon external to the mold carrier plates. Elements are provided which detect the position of the movable mold carrier plate in a defined manner and control the quick-locking mechanism the closing unit, and the driving cylinder.

Abstract: A pouring spout to for delivering molten steel into a continuous casting mold with longitudinal and transverse sides, especially for casting thin slabs. The outer wall (12) of the pouring spout (10) is shaped in its longitudinal-side region (17) facing the longitudinal mold side (21) so that is has a substantially constant distance (d) relative to the longitudinal sides (21) of the mold, regardless of the immersion depth of the pouring spout into the melt in the continuous casting mold. In addition, the outer wall of the pouring spout, in its transverse-side regions (16) facing the transverse mold sides (22), has form elements that oppose a minimum resistance to the horizontal flow of the molten steel and the casting powder floating thereon.

Abstract: A process for drawing stretched metal workpieces, especially tubes, for the purpose of cross-sectional reduction in more than one drawing step using at least two sequential drawing aggregates. The aggregates grip the workpiece on the outer periphery, with two alternately-moved clamping carriages, which draw the workpiece continuously through respective drawing rings associated with the respective aggregates and arranged in respective drawing-ring holders. The drawing aggregates can be driven independently of one another in a power-regulated and/or moment-regulated manner. Furthermore, during the drawing process, a defined prestress force, which prevents deflection of the workpieces from a straight line, is maintained at all times in the section of the workpiece located between the drawing aggregates.

Abstract: A device for the continuous casting of steel, consisting of a continuous casting mold which oscillates in the casting direction, is mounted on springs clamped at both ends which extend transverse to the direction of casting, and is connected with a hydraulic oscillation drive. The the hydraulic oscillation drives are servo-hydraulic cylinders, arranged in a longitudinal sectional plane placed through the continuous casting mold laterally alongside the continuous casting mold, the servo-hydraulic cylinders are firmly connected, free of play, to a support frame and with the continuous casting mold.

Abstract: An electric machine which can be operated optionally as a motor or generator and in particular can be installed in the drive train of a motor vehicle with a hybrid drive. The machine includes a stator and a rotor of substantially cylindrical shape, The rotor is positioned about the stator to form a circumferential air gap between the stator and the rotor. An integrated switchable clutch is provided for the transmission of torque. The rotor is arranged on the outside (external-rotor machine) of the stator and the clutch is arranged within the stator.

Abstract: A process for ensuring the operability of gas seals in turbocompressors, especially turbocompressors with a higher operating pressure and a higher shutdown pressure which have gas-lubricated sliding-ring seals for sealing the shaft lead-throughs and in which cleaned gas is fed to the gas-lubricated sliding-ring seals from a higher-pressure tapping location proceeding from the turbocompressor. While the turbocompressor is shut down the pressure of the gas outside of the turbocompressor is increased above the pressure level prevailing during shutdown using a pressure booster unit, and the gas is fed in a cleaned state to the gas-lubricated sliding-ring seals.

Abstract: A device for reducing ventilation loss of a high-speed gear mechanism with a gear housing NS intermeshing gears, which are surrounded by a casing and to which lubricant is supplied in the engagement area for the purpose of reducing friction. The gear mechanism consists, in a known manner, of a gearwheel and a pinion that intermeshes therewith. Utilizing the pressure that is automatically established in the tooth engagement and disengagement area, only the pinion is encapsulated over area of more than 180.degree. of its peripheral distance. The end of the encapsulation in the tooth disengagement area is designed so that there is constant enlargement of the uncovered cross-sectional area between the pinion and the gearwheel. Additionally, and the encapsulation is sealed on both sides relative to the non-toothed shaft area of the pinion.

Abstract: A modular valve arrangement, including: a plurality of individual values each having a passage therein with a longitudinal axis, and a fixing arrangement for joining the valves together into a joined condition in which the passages cooperate to form at least one pressure-fluid line through the entire valve arrangement. The fixing arrangement includes, for each valve, a dovetail tenon on one surface of the valve and a dovetailed mortise on an opposite surface of the valve. The mortise and tenon of adjacent valves being engageable with one another in the joined condition, and extending on their respective valve side in a direction perpendicular to a longitudinal axis of the pressure-fluid line. For securing the valves in the joined condition, each valve includes a nub on one surface and a corresponding depression on an opposite surface of the valve arranged so that the nub of one valve engages the depression of an adjacent valve in the joined condition.

Abstract: A method and apparatus for detecting displacement of valve rod movement in electropneumatic position regulators, by generating a high-frequency electromagnetic alternating field by exciting a high-frequency oscillation within an LC oscillating circuit in an inductive sensor, damping the high-frequency oscillation as a function of displacement via an electrically conductive body moved along by the valve rod, demodulating the oscillator signal and feeding the demodulated signal to a microcomputer without amplification for evaluation of the displacement-dependent damping of the oscillation amplitude, measuring the temperature within the inductive sensor, correlating the temperature with the measured oscillation amplitude in the microcomputer, and determining a corrected displacement signal from the correlation.

Abstract: A conveyor belt of a continuous strip-casting device for casting strips of metal, particularly steel, which belt is guided by a driven drum and a drum horizontally adjacent to the driven drum and displaceable for tensioning the belt. The belt rests in this connection on a support arranged between the drums and the side thereof facing away from the cast strip is cooled. The conveyor belt has, on the side remote from the cast strip, uniformly distributed blind holes. The blind holes are separated by webs of a minimum width. The total surface area of the webs is 0.15 to 0.4 times the total surface area of the belt. The bottoms of the blind holes have a wall thickness which, upon heating by the cast strip with simultaneous cooling of the inside surface of the blind holes, permits a bulging of the bottom of less than 1 mm.

Abstract: A method and apparatus for processing a contaminated free-flowing material and, in particular, filter dust from industrial metallurgical waste and domestic waste incineration plants are disclosed.

Abstract: A continuous casting mold for producing strands in the form of slabs, thin slabs, blooms, and billets resulting in highly reliable casting at casting speeds of up to 6 m/min. The cambered shape of the mold causes the strand to be centered during casting by the mold so that sideways movement of the strand shell toward one of the narrow sides (snaking) is suppressed or moderated. This symmetrical running of the strand shell box during casting in the mold results in a uniform symmetrical formation of the strand shell and its temperature field (isotherms), the withdrawal forces, and the loading of the strand shell in relation to the strand axis in the casting direction, even despite weaving of the strand in the region of the strand guide.

Abstract: A mold arrangement for the production of endless castings of metal, particularly slabs of steel, having copper plates for the wide sides of the mold which rest on coolable support plates, and narrow sides which can be clamped between the wide sides. Additionally, an oscillating device is connected with the support plates. The support plates are trough-shaped in the region of the mold wide sides. Channels are provided in the wall of the support plates for the passage of a cooling fluid. Electromagnetic structural parts arranged on mounting frames can be freely introduced into the trough free space which faces away from the wide sides.

Abstract: A submerged arc furnace with an open slag bath, having a vertically movable frame which is arranged above the furnace which is closed by a cover. An electrode mount and an electrode filling device are arranged on the frame. A platform is provided on which the frame is supported via at least three regulating cylinders. The platform, which is arranged above the furnace cover, is configured as a maintenance platform on which, for each electrode, there is provided a sealing unit which has components for the horizontal and vertical sealing of the free surfaces between the electrodes and the electrode passage openings of the cover.