摘要:
The invention relates to a roll stand comprising at least one pair of rollers mounted on a stand frame, drive shafts (1), in particular articulated shafts, for rotatably driving the rollers and a coupling device (2) for coupling the drive shafts (1) and rollers. The invention also relates to a novel axial roller displacement based on the drive shaft (1) which is provided with a roller actuating device (3). A method for axially displacing the rollers is also disclosed.
摘要:
The invention relates to a roll stand comprising at least one pair of rollers mounted on a stand frame, drive shafts (1), in particular articulated shafts, for rotatably driving the rollers and a coupling device (2) for coupling the drive shafts (1) and rollers. The invention also relates to a novel axial roller displacement based on the drive shaft (1) which is provided with a roller actuating device (3). A method for axially displacing the rollers is also disclosed.
摘要:
The invention relates to a control method for a mechanical-hydraulic system having a degree of freedom per hydraulic actuator which is embodied as a control path, and a measuring sensor (6) which is used to measure the pressure ph of a hydraulic cylinder (3) and a measuring sensor (8) which is used to measure the position xh of the piston of the hydraulic cylinder (3). A control unit which can receive input variables of hydraulic pressure ph, and hydraulic actuator position xh, is provided. An observer, which determines the desired pressure of the hydraulic system and the speed vh of the hydraulic actuator (3), is implemented therein. The desired pressure in the control element is in taken into account in the set of rules of the control element and the speed vh of the hydraulic actuator can be over-ridden for attenuating the control element.
摘要:
Die Erfindung betrifft eine Anlage zur Entkohlung einer Stahlschmelze bei der Herstellung von rostfreiem Stahl mit einem metallurgischen Gefäß (2), insbesondere einen Konverter, zur Aufnahme einer Stahlschmelze, mit einer im oberen Teil des Gefäßes zum Aufblasen von Sauerstoff und gegebenenfalls Inertgas, insbesondere Argon und/oder Stickstoff, auf die Oberfläche der Stahlschmelze geeignet angeordneten Aufblasvorrichtung mit einer Blaslanze und einer Lavaldüse. Zur Erzielung einer besonders wirtschaftlichen und effizienten Entkohlung der Stahlschmelze zu erreichen wird vorgeschlagen, dass die Aufblasvorrichtung zumindest zwei Blaslanzen (6, 7) mit jeweils mindestens einer Lavaldüse umfasst, wobei sich die Lavaldüsen der verschiedenen Blaslanzen durch unterschiedliche Auslegung hinsichtlich der Durchflussmenge unterscheiden, und die Blaslanzen unabhängig voneinander zur Entkohlung der Stahlschmelze einsetzbar sind
摘要:
Directional drives are for example used upstream of coilers in mill stands for coiling up the strip in a defined manner. A first roll (5) that can be placed against a second roll (6) is used to adjust or control the desired strip tension and a lateral deviation of the strip. The directional drive (1) according to the invention has an especially simple design and can be controlled in a very precise manner. For this purpose, the rockers (2, 3) on which the roll (5) which can be placed against the second roll is mounted are separately mounted in a frame (12) so as to be swiveled and can therefore be swiveled independently.
摘要:
The invention relates to method for the production of a raw sintering mixture containing a small amount of ore, at least one additive, residual sintering items from a subsequent sintering process and, optionally, a binder, which occurs by mixing and subsequently granulation. The aim of the invention is to obtain high throughput, whereby wear of system parts and operational failures caused thereby can be prevented. According to the said method, addition of residual sintering items occurs after ore is mixed with the additive and with the optionally provided binder.
摘要:
The invention relates to a method for collecting and treating reaction gases from a production plant (1) for molten metal. Substances used, containing metal, are introduced into a metallurgic container in a solid of liquid form and are converted under the effect of fuel and reaction substances and the hot, gaseous and dust-charged reaction gases discharged from the metallurgic container are partially guided into a primary dust-removing process and partially into a secondary dust-removing process in associated dust separating devices. In order to reliably remove dust in a short space of time from large and hot amounts of reaction gas with the smallest dimensioned dust-removing machine possible, the reaction gas which is guided to the secondary dust-removing process passes through a heat accumulator (9) prior to the dust-removing process and the reaction gas which has a temperature which is higher than the wall temperature of the accumulator elements, releases heat to the heat accumulator. Said accumulated heat is re-discharged to subsequent reaction gases (or suctioned ambient air) having a temperature which is lower than the wall temperature of the accumulator elements.
摘要:
The invention relates to a method for loading a pourable material (3) in a container (7), said material being supplied by gravity forces through a channel (2) which is arranged in the opening (4) of the container (7). In order to obtain a desired material (3) distribution in the container (7), said material, a little bit before the passage thereof through the opening (4), i.e. inside the channel (2), is exposed to forces modifying the displacement direction of the material given by the channel (2) and the gravity forces.
摘要:
The invention relates to a strand-guiding roller for supporting and directing cast metal strands in a continuous casting plant. Said strand-guiding roller comprises a central rotatable shaft (1) and at least one roller jacket (3) that is supported in a torsion-proof manner on said shaft. In order for the strand-guiding roller to be able to better deal with mechanical and thermal loads, the roller jacket rests upon the shaft via bearing rings (4) or an annular support sleeve (26), an annular space (6) that is delimited in an axial direction by the bearing rings (4) is formed between the shaft (1) and the roller jacket (3), and the annular space (6) is embodied as a coolant duct.
摘要:
Gezeigt wird ein Verfahren zur Berechnung der geometrischen Form von Walzgut, insbesondere von Blechen, mit Hilfe mathematischer Gleichungen. Dabei wird die Änderung der geometrischen Form des Walzgutes in jedem einzelnen Stich berechnet, wobei für zumindest einen Stich die Geometrie des Walzspalts in die Berechnung eingeht. Weiters wird ein darauf aufbauendes Verfahren zur Verbesserung der geometrischen Form von Walzgut gezeigt, bei dem mögliche Stellgrößen, die Einfluss auf die geometrische Form des Walzguts haben, so verändert werden, dass die Abweichung von einer gewünschten geometrischen Form minimal wird.