Abstract: The invention relates to a reel (10) for winding or unwinding strip-shaped material, in particular a metal strip or the like, and to a method for tensioning a coil (12), the reel comprising a frame (13), at least one reel head (14) for disposing the coil for winding or unwinding material (11), a drive arrangement (15) having at least one electric motor (16) and a shaft (20) which connects the electric motor to the reel head, the electric motor being formed comprising a stator (17) and a rotor (18) and being disposed on the frame, the electric motor being a torque motor or a synchronous motor, the shaft directly connecting the rotor to the reel head, the rotor being mounted on the stator so as to be axially displaceable relative to the stator.

Abstract: A method for preadjusting and controlling strip planarity in flexible single-pass and reversing rolling of a strip-shaped material web using at least one work roll pair forming a roll gap and back-up rolls for the work rolls, and devices for roll adjustment, roll bending, roll displacement and roll balancing. The method includes, when rolling a thickness ramp for adjusting a desired strip profile shape over the strip width, determining corresponding adjustment parameters by accessing on-line a multidimensional data matrix produced off-line through a FEM model for all adjustment ranges of rolling force, roll displacement and bending control at all occurring strip widths.

Abstract: A cooling and lubricating device for rollers of a cold rolling mill with one or more roll stands for controlling strip tensile stress of the strip across the width by changing the effective roll barrel diameter and/or the roller lubrication with a controlled supply of rolling oil or emulsions. The supply is pressure-, quantity-, and/or temperature-controlled. Several nozzle beams are provided and assigned to individual rollers, respectively. The nozzle beams are connected to side shields of the roll housing. Spray nozzles are mounted in the nozzle beams and distributed across the entire roller width. The nozzle beams are moveable independently relative to the rollers transverse to the strip running direction and in planes parallel to the strip plane. Rotary and linear drives are connected to the nozzle beams for rotating the nozzle beams about the longitudinal axis and for moving them in the longitudinal direction.

Abstract: A cooling and lubricating device for a cold rolling mill has nozzle beams with spray nozzles for individual rollers that are moveable relative to the rollers independently of one another transverse to the strip running direction. Rotary and linear drives are connected to the nozzle beams for rotating them about the longitudinal axis and moving them longitudinally. The nozzle beams are movable from a maintenance position to a working position and back. The spray nozzles have nozzle holders mounted in openings of the nozzle beams and nozzle heads mounted in the nozzle holders. Rotary slide valves with control members are rotatably supported in center throughbores of the nozzle holders. The rotary slide valves have blind bores opening to the nozzle heads and inlet openings aligned with inlet openings of the nozzle holder or nozzle head, when the spray nozzle is open, and covered by the nozzle holder or nozzle head, when the spray nozzle is closed.

Abstract: A roll stand with multiple rolls for rolling strip-shaped rolling stock has a roll frame and upper and lower working rolls mounted on the roll frame in a common vertical roll axis plane, wherein the rolling stock is guided between the upper and lower working rolls forming a roll set. Upper and lower support roll insert parts are mounted on the roll frame. Two upper support rolls are mounted in the upper support roll insert parts and support the upper working roll, and two lower support rolls are mounted in the lower support roll insert parts and support the lower working roll. The two upper and the two lower support rolls are arranged symmetrically to the vertical roll axis plane, respectively. Working roll bending devices are mounted on the roll frame and act on the upper and lower working rolls. Balancing devices are mounted on the roll frame and advance and balance the upper and lower support rolls.

Abstract: A cooling and lubricating device for a cold rolling mill has nozzle beams with spray nozzles for individual rollers that are moveable relative to the rollers independently of one another transverse to the strip running direction. Rotary and linear drives are connected to the nozzle beams for rotating them about the longitudinal axis and moving them longitudinally. The nozzle beams are movable from a maintenance position to a working position and back. The spray nozzles have nozzle holders mounted in openings of the nozzle beams and nozzle heads mounted in the nozzle holders. Rotary slide valves with control members are rotatably supported in center throughbores of the nozzle holders. The rotary slide valves have blind bores opening to the nozzle heads and inlet openings aligned with inlet openings of the nozzle holder or nozzle head, when the spray nozzle is open, and covered by the nozzle holder or nozzle head, when the spray nozzle is closed.

Abstract: A process for online measurement of electrical conductivity to control minimum conductivity of fluids, especially rolling oil, which prevents charging and discharging, by controlled addition of conductivity additives. The process measures the time change of conductivity to determine the amount of extremely fine particulate fouling and the degree of impurity of the rolling oil. The process also provides online measurement of the dielectric constant and online measurement of permeability.

Abstract: A six-high multi-roll stand (1), has one top and one bottom work roll (2, 3) which are supported in chocks (4, 5), with one top and one bottom intermediate roll (6, 7) which are supported in chocks (8, 9), and with one top and one bottom back-up roll (10, 11) with bearings located in one top and one bottom chock (12, 13). Two functional units are integrated into windows (16) of two roll housings (14, 15) with four each hydraulic operating cylinder units (18, 18, 19, 19) located symmetrically and parallel to roll axis plan 17--17), each operating cylinder unit (18, 19) consisting of top operating cylinder (18a, 19a) with top actuating piston (20a, 21a) which acts on chock (12) of top back-up roll (10) and bottom operating cylinder (18b, 19b) with bottom actuating piston 20b, 21b) which acts on chock (13) of bottom back-up roll (11) for counterbalancing back-up roll (10), and two operating cylinders (18a, 18b; 19a, 19b) of each operating cylinder unit (18, 19) in common cylinder housing (22, 23).

Abstract: A rolling mill has a rolling stand having two roll standards for supporting rolls having roll pins at opposite ends of each roll with bearings interposed between the standards and the pins. A chock (10) surrounds each bearing and is releasably secured within a standard. A housing (12) is detachably secured on an outer side of the chock. The housing carries stop elements (14) mounted for movement in a direction parallel to the axis (13--13) of the roll. A first hydraulic jack (16) advances the stop elements toward a midplane (33--33) of the roll and into abutment with the roll, thereby to position the housing correctly along the roll axis. A plurality of clamping elements (21) is spaced apart about an endwise outer part (34) of the roll pin (8). A second hydraulic jack (25) moves the clamping elements into clamping engagement with the outer section (34) of the roll pin (8).

Abstract: The apparatus for the counterbalancing and vertical bending of the work rolls of a four-high rolling mill stand (1) comprises respectively two dual-acting hydraulic adjusting cylinders (13) installed in the bottom work roll chocks (4) symmetrically to the roll axis plane (12--12). The adjusting piston (14) of the adjusting cylinders (13) serves for moving the piston rod (15) out of the bottom chock (4) and for moving the free end of the piston rod (15) into the top work roll chock (15) during rolling operation, and for moving the piston rod (15) into the bottom chock (4) for the separate dismounting of the work rolls (6, 7). During rolling operation, the extended piston rod (15) is connected, by means of a coupling device (16), with a shaft (22) supported in articulated fashion in the top chock (5).

Abstract: The monitoring device is constructed in such a way that the temperature measurement takes place directly at the bearing and there is no need for detaching connecting lines during changing of rolls. The main features of the monitoring device for roll bearings, installed, for example, in the chock (1) of the work roll (3) of a roll stand, reside in a thermal limit value pickup (6) in contact with the roll bearing (7), as well as in a mechanical, spring-loaded transmission member (8) locked in place in the chock (1) by way of the limit value pickup, for acting on a signal generator (9) arranged outside of the chock (1) in the roll stand, this signal generator being actuated to shut down the rolling mill by automatic outward movement of the transmission member (8) after releasing its locking device by the limit value pickup (6) upon reaching a limit temperature of the roll bearing (7). The monitoring device is preferably intended for use in thin-gage strip and foil rolling mills having high rolling speeds.