Abstract: The invention relates to a system for isothermally forging metal semifinished products close to the final contours within a vacuum and/or a protective gas atmosphere, comprising at least one forging press (1) which comprises at least one press ram (4) that extends into a vacuum forging chamber (3), at least one upper tool (5), and at least one lower tool (6); at least one workpiece changing chamber (9) which is connected to the vacuum forging chamber (3) in a gas-tight manner; and a plurality of lock chambers (11, 12) for preparing and/or heating and/or cooling workpieces, said lock chambers being connected to the workpiece changing chamber (9) in a gas-tight manner, wherein at least the vacuum forging chamber (3) has at least one round cross-sectional contour.

Abstract: A heat-treatment method for controlling austenite content in steel during conveying, heating and cooling the steel though a furnace. The method includes heating the steel until reaching a first location, then cooling the steel until reaching a downstream second or third location in the furnace. First, a quality window of the austenite content having minimum/maximum values at the second or third locations is determined. Upstream from the second/third locations, temperature of the steel for the second/third locations is predicted by a heat-transfer equation and/or conveyance speed of the steel through the furnace. The austenite content is then predicted at the second/third locations by metallurgical/data-based modelling using the predicted temperature.

Abstract: An atomization unit (1) for atomizing metal melts, in particular for powder-metallurgical purposes, includes a crucible (2) having a base outlet (4). A melt nozzle (16) is arranged below the base outlet (4) and a gas nozzle (9) is preferably arranged concentrically with respect to the melt nozzle (16). The melt nozzle (16) is formed in multiple parts and comprises a casing body along with a nozzle core (17). The nozzle core (17) passes through a conical seat within the casing body.

Abstract: A system for producing flat rolled products from thick-cast metal slabs includes: a continuous casting device, by which a flat continually cast product with a thickness of at least 160 mm can be continually cast; a separating device, arranged so as to adjoin the continuous casting device for separating the flat continually cast product into individual thick slabs; a hot-rolling mill, by which the thick slabs can be rolled to form the flat rolled product; a thick slab supplying device arranged transversely to the transport direction and positioned between the separating device and the rolling train; and an electric heating device arranged in front of the hot-rolling mill, for a direct hot charging process, said electric heating device allowing at least the thick slabs coming from the continuous casting device arranged in the common transport line to be heated to a hot-rolling temperature.

Abstract: A method for producing an aluminum strip (2) in a coupled casting-rolling process, includes the following steps: a) melting an aluminum raw material comprising at least one aluminum alloy in at least one melting assembly (4); b) determining the alloy composition of the melt (3); c) casting the melt (3) to form a hot strip by means of at least one strip-casting machine (6); d) rolling the hot strip in a rolling system (14) comprising at least one rolling device for shaping the hot strip for thickness and/or width reduction; and e) regulating and/or controlling at least one shaping parameter of the rolling system (14) as a function of the alloy composition of the melt (3). The disclosure also relates to a casting-rolling system (1) for carrying out the method.

Abstract: A method for planning production in a production plant having a plurality of separate, successive plant parts is disclosed. The products to be manufactured in the production plant are available in a production list and/or production sub-lists are available for the separate, successive plant parts or are established from the production list. The method includes analyzing the production sub-lists and determining production sequences for the relevant plant parts. Those products that can be manufactured in the relevant plant part and can be manufactured without restricting or interrupting production in the plant part are combined in each production sequence. The method further includes analyzing the production sequences of the plant parts and determining at least one overall production sequence for the production plant. Products that are included for all the plant parts in a joint production sequence are included in an overall production sequence.

Abstract: A shell (10) acts as a transporting shoe for steel ingots, which are pushed through a preferably tubular induction furnace for inductive heating for the purpose of producing seamless tubes by the extrusion process. The shell (10) is formed in such a way that it partially reaches around the contour of the steel ingot to be heated. The shell is provided at one end leading in the pushing-through direction or transporting direction, with a shoulder (12), which extends at an angle to the transporting direction, against which the steel ingot rests in such a way that the pushed-through steel ingot takes the shell (10) along with it. A method for inductively heating steel ingots uses a shell (10) as described.

Abstract: A device for handling mandrel rods in a rolling plant for rolling seamless tubes comprises an inserter. The inserter moves a mandrel rod in a rolling direction such that the mandrel rod, starting from an initial state, is pushed into a tube blank situated upstream of the mandrel rod. A retaining device has a fixing unit that is movable along the rolling line and is designed to temporarily hold the mandrel rod at an action point at a rear end of the mandrel rod and to carry out a working stroke. The mandrel rod can be inserted into the rolling mill in the rolling direction and pulled out of the rolling mill counter to the rolling direction by the retaining device. The retaining device is designed such that the starting position of the fixing unit lies between the two ends of the mandrel rod in the initial state.

Abstract: A modular rolling train, particularly a hot rolling train, preferably in conjunction with an upstream casting facility, and a method for operating a modular rolling train are described. The rolling train is standardized and modularized by dividing the rolling train into discrete units n and by modularization of the discrete units. The rolling train can be flexibly adapted to new requirements by exchanging a module.

Abstract: A roll stand for rolling a metallic product and having two work-rolls supported in the roll stand by respective work-roll chocks. An axial displacement arrangement is provided with which the work-rolls can be displaced in direction of their longitudinal axes, and at least one work-roll locking arrangement is provided with which the work-roll chocks can be locked and unlocked in the roll stand. A rotation prevention arrangement is provided with which the axial displacement arrangement can be prevented from rotation about longitudinal axes of the work-roll. A bending arrangement is provided which includes a bending block and with which a bending torque can be applied to the work-rolls. In order to achieve a simpler design of the assembly and improved lubrication possibilities for the component to be lubricated, the rotation prevention arrangement and the axial displacement arrangement are fixedly connected with the bending block.

Abstract: A crosshead (1) for use as an upper and/or lower beam (50, 60) in a press (100), in particular an open-die forging press or a closed-die forging press, comprises an upper chord (2) and a lower chord (5) connected to the upper chord (2) via a first and a second lateral upright (3, 4). The first lateral upright (3) is arranged in the region of a first distal end (6) and the second lateral upright (4) is arranged in the region of a second distal end (7) of the crosshead (1). The crosshead (1) has a truss support structure (8) between the two lateral uprights (3, 4) by which the upper chord (2) and the lower chord (5) are additionally connected to one another.

Abstract: A system and method for monitoring, operating and maintaining an industrial plant in the metal-producing industry, including: a mobile terminal device with at least one sensor for recording measured values within the industrial plant, at least one position sensor for detecting the position of the mobile terminal device in the industrial plant, a central data processing device for processing the measured values recorded by the mobile terminal device by the at least one sensor, taking into account the position of the mobile terminal device recorded by the at least one position sensor in the industrial plant, and at least one communication network for exchanging data between the mobile terminal device, the at least one position sensor and/or the central data processing device.

Abstract: A stretch-rolling device and a stretch-rolling method for pressure-forming workpieces by rolls. The stretch-rolling device includes a pair of work-rolls with two rolls, which can each be rotated about their roll axes and form a roll gap between them. The rolls implement a plurality of stages in an axial direction, which are set up for stepwise deformation of the workpieces as the workpieces pass through the stages successively. A manipulator with a plurality of gripping devices, which are arranged on a working side of the pair of work-rolls, are set up to grip the workpieces at an assigned stage to guide the workpieces through the roll gap in a feed/retraction direction. A support is arranged to temporarily support the workpieces in cooperation with the manipulator to transfer the workpieces to another gripping device, which is preferably an adjacent gripping device of the next higher stage.

Abstract: A flatness-measuring device for a hot-rolled strip within a hot-rolling mill includes an entry-side deflection roller and an exit-side deflection roller. A central deflection roller is arranged between the entry-side deflection roller and the exit-side deflection roller. The central deflection roller is used as a flatness-measuring roller. To prevent the hot-rolled strip from departing laterally during a flatness measurement, the flatness-measuring device has a sensing apparatus for sensing an actual position of the hot-rolled strip. An adjusting apparatus is connected to the sensing apparatus and to at least one of the deflection rollers. The flatness-measuring device is designed to vary an angle between a longitudinal central axis of the deflection roller respectively connected to the adjusting apparatus and a longitudinal axis of the flatness-measuring device based on a deviation of the actual position of the hot-rolled strip from a predefined target position.

Abstract: A device and a method are described by which the process control, in particular temperature control, of a metal product passed through along a single running-through line is flexibly influenced by means of at least two adjacent segments. By exchanging segments, the process control can be adapted quickly and flexibly to a wide variety of metal products.

Abstract: A method for controlling a cooling device which is set up to control temperature of a rolling stock such as a metal strip, which runs through a cooling device along a conveying direction of a rolling train. The cooling device is arranged upstream of the rolling train. The method includes determining total enthalpy of a system formed by the rolling stock; determining a measure for the formation of scale, which includes a scale factor that depends on chemical composition and surface temperature of the rolling stock, and a heat transfer coefficient of the scale; calculating a temperature distribution and/or average temperature in the rolling stock based on a temperature calculation model, in which the determined total enthalpy and the measure for the formation of scale are included; and setting a cooling capacity of the cooling device taking into account the calculated temperature distribution and/or average temperature in the rolling stock.

Abstract: A smelting unit for steel production with a tap weight of between 60 t and 350 t and a method for operating the same are disclosed. By a top lance that moves during operation of the smelting unit and the coordinated injection of process gases by sidewall injectors and the top lance, the undulations in the surface of the molten bath are reduced. As a result, fewer drops detach from the surface of the molten bath and soiling of the upper receptacle and the exhaust manifold is significantly reduced.

Abstract: A method for operating a system of the iron and steel industry for producing a metal product with participation of a severing or forming device. The actual value of an indicator be calculated over a length section of the metal product for the metal product to be produced. The indicator represents the resistance of the metal product to severing or forming processes. The calculated actual value pIst for the indicator p is then compared to a predefined threshold value. The severing or forming also only actually takes place when the actual value of the indicator of the metal product is less than the threshold value. If a comparison should show that the actual value of the indicator is greater than the threshold value, before the severing or forming of the metal product, a local processing of the metal product is performed in the corresponding length section.

Abstract: The invention relates to a method and to a spraying apparatus (10) for the thermal surface treatment of a metal product (1). The metal product (1) is conveyed in a transport direction (T) through a treatment section (12) of a spraying apparatus (10) equipped with cooling nozzles (16) while cooling fluid is discharged through the cooling nozzles (16) of the spraying apparatus (10) onto the surfaces of the metal product (1), wherein the metal product (1) has—viewed in the transport direction (T) of the metal product (1)—a front section (4) and a trailing rear section (5). The cooling of the surfaces of the metal product (1) within the spraying apparatus (10) occurs in such a manner that the rear section (5) of the metal product (1) is cooled more significantly than its front section (4).

Abstract: A roll stand (1) includes a roll (3), in particular a backup roll, mounted via oil film bearings (2). Each oil film bearing (2) has a sealing system for sealing the oil film bearing (2) to prevent oil leakage and a coolant ingress. The oil film bearing (2) is integrated into an oil-circulating lubrication system (4), which is fluidically connected to the oil film bearing (2) via oil feed lines (5) and an oil discharge line (6). A first sensor (11) is arranged in the oil feed line (5) and a second sensor (12) is arranged in the oil discharge line (6). The two sensors (11, 12) are designed to determine the coolant content in the relevant oil volume flow.