Abstract:
A system for controlling a dynamic surface includes at least one sensor (114) for detecting the presence of a deflecting force on dynamic surface (108) and generating a feedback signal proportional to the deflecting force. The system includes a controller (118) for receiving the feedback signal and generating an ouptut signal in response to the feedback signal. The system has at least one piezoelectric actuator (116) in communication with dynamic surface (108) and in communication with controller (118) for receiving the output signal. The piezoelectric actuator (116) applies a counter deflecting force to dynamic surface (108) upon receiving the output signal to return the dynamic surface to an undeflected orientation. In other embodiment, a system for controlling vibration includes at least one sensor, at least one piezoelectric actuator and at least one mass overlying the at least one piezoelectric actuator, the piezoelectric actuator lying between the mass and the dynamic surface.
Abstract:
The invention relates to a casting roller for the casting of metal strip in the casting gap between two parallel casting rollers with variable separation and which may be cooled. A shaft (1) with a shell (2), surrounding the above at a separation therefrom and an external cover (3), the circumferential surface of which may be adjusted with regard to the crowning thereof during the casting operation, for altering the shape of the external cover, are disclosed. Annular pressure chambers (3c) are thus formed on the inner side of the shell (2) for hydraulically pumping the above up, which are formed between the shells and applied strips (13). The casting roller further comprises means for connecting the annular pressure chambers (3c) to an external hydraulic pressure generating system.
Abstract:
The invention concerns a roll comprising a hub (2), an external ferrule (3) coaxial with the hub, and, between the hub and the external ferrule, a ductile ferrule (4) comprising a plurality of ring-shaped cells (43) axially juxtaposed and supplied with a pressurised liquid, each cell being delimited by an internal cylindrical wall (41) in contact with the hub and an external cylindrical wall (42) in contact with the external hoop, linked by two lateral ductile walls (44, 44') having, in radial cross section, convex surfaces arranged opposite each other. The invention is applicable to casting rolls of a plant for continuous casting between rolls and to laminating rolls.
Abstract:
A compliant pressure roller (10) for creating uniform pressure at a nip (42) has a stationary inner core (12). A plurality of shoes (14) is pivotally mounted to the stationary inner core. Non-magnetic dividers (16) create a plurality of annular chambers (18) and one shoe occupies one of the chambers. A magneto-rheological fluid fills each of the chambers and a plurality of magnetic field generators (13) changes a magnetic field in each of the chambers. A thin, rotatable shell (24) surrounds the plurality of chambers, shoes, and stationary inner core
Abstract:
A device is disclosed for the continuous production of consolidated flat material webs, in particular with parallel planes, preferably foils and particle boards, made of plastic masses, for example plastics, which consolidate when the temperature changes. The device has a frame (1), at least one upper and one lower uninterrupted band (4, 5), in particular made of steel, horizontal drive (3) and deflection rolls (4), gauging rolls (11, 12, 13, 14) set against the upper or lower band and having an axis (23) fixed by holders to the frame at the axial ends of the axis (23), and a rotationally symmetrical, in particular cylindrical, casing (24) which surrounds and is supported on the axis (23). The casing (24) has a bearing (37, 38) at each of its two axial end regions, separate from the axis (23) and the axis holders (27, 28), and is supported on the axis (23) outside of its two end regions, in particular in a central region which preferably corresponds to half the length of the casing.
Abstract:
Die Erfindung betrifft eine Rolle (1) für eine metallurgische Anlage. Die Aufgabe der Erfindung besteht darin, die Rolle (1) so zu verändern, dass deren Balligkeit auf einfache und robuste Art und Weise eingestellt werden kann. Diese Aufgabe wird dadurch gelöst, dass die Rollenachse (2) mit dem Rollenmantel (3) an einer Stelle, vorzugsweise an zumindest zwei Stellen, über einen Ring (4) verbunden ist und der Ring (4) ein Heizelement (5) aufweist, wobei durch das Erwärmen des Heizelements (5) die Höhe H des Rings (4) um ΔΗ verändert werden kann.
Abstract:
In the method, the shape of the shell (12) is measured and the outer surface (12a) of the shell (12) is ground based on measurements of the shape of the shell (12). The measurement of the shape of the shell (12) comprises measuring the shape of an inner surface (12b) of the shell (12) at at least one cross section of the shell (12) such that at said at least one cross section of the shell (12) the shape of the inner surface (12b) of the shell (12) is measured at several measurement points spaced from one another on an inner circumference of the shell (12), so that the grinding of the outer surface (12a) of the shell (12) is performed based on the measurements of the inner surface (12b) of the shell (12).
Abstract:
The invention relates to a back-up or intermediate roller for producing a flat rolled product,especially a strip, in a rolling mill. The inventive roller consists of a cylindrical core with a rotationally fixed coaxially enveloping tubular jacket joined thereto. Axially and hydraulically displaceable support bodies are arranged between the jacket and the core of the roller and support the jacket of the roller against the core. The support bodies are composed of at least two annular pistons that are symmetrically mounted in relation to the middle of the roller and are sealed with respect to the core (2) of the roller and the inner side of the jacket (5) of the roller. The annular pistons consist of several ring-shaped supporting bearings (A-K) that are arranged on the outer periphery of said pistons and distanced from each other in a longitudinal direction of the roller (1). The inner surface of the jacket (5) of the roller can be placed against said supporting bearings.
Abstract:
The invention relates to a calender arrangement with end rollers configured as curl adjustment cylinders with an inner lifting system. One of the end rollers includes at least one stop element (20), which is configured as a hydraulic hydrostatic element, defining apassage gap with the inner wall of the cylinder jacket (14). By feeding a hydraulic medium at a constant flow rate, an equilibrium of forces is achieved, in which the cylinder jacket is positioned. The pressure thus built up serves to indicate the positioning forces. Minor deviations from the set position are allowed.
Abstract:
The production and operation of high-performance press-rollers having the usual design always entails considerable production and maintenance costs to set and maintain the pressure in the working slit of the roller arrangement at a constant value over the length of the roller. The new roller arrangement avoids the undesirable warping of the rollers. The roller arrangement has a magnetic circuit that includes both rollers. The magnetic circuit consists of a cylindrical magnetic core (4), several poles (5) axially distributed on the magnetic core, a cylindrical exciter (3) and control windings (14) arranged between said poles, a magnetic shell that encloses the whole circumference of one roller and is made of two parts separated by a ring-shaped secondary air gap (11), and a continuous magnetic shell in the axial direction arranged at the outer circumference of the other roller. When used to process webs of material in the textile, paper, plastic and metallurgical industries, this electromagnetic roller arrangement achieves high quality standards with a high productivity. The solution provided by the invention is shown on the figure above.