Sundwiger Eisenhutte Maschinenfabrik Gmbh & Co.

Betriebsforschungsinstitut Vdeh Institut Fur Angewandte Forschung Gmbh

Sundwiger Eisenhutte Maschinenfabrik Gmbh

Sundwig Gmbh

Betriebsforschungsinstitut Vdeh

Bernd Berger

Gert Mucke

Helmut Thies

Peter Reinthal

Eberhard Neuschutz

Manfred Benfer

Carl Kramer

Bernd Konrath

Eberhart Neuschutz

Heinrich Schulte

Damian Cöppicus

Franz Bruggen

H Dieter Volkenand

Gerd Mucke

Heiko Peche

Heinz Oppermann

The invention relates to a roll stand comprising a pair of work rollsfor rolling a metal strip B, comprising back-up rollswhich provide lateral support to their respectively allocated work rolls, with support force directed towards the work rollsbeing able to be applied to said back-up rolls by means of a force generation device, and comprising support rolls or intermediate rollswhich are borne by a chock which can be slid into the roll stand W, Win the direction of the longitudinal axis of said chock, and wherein said chock can be withdrawn from said roll stand, with each support roll or intermediate roll supporting an associated work rollin a direction which is essentially perpendicular to the direction of movement of the metal strip B. In such a roll stand, changing of the rolls can be carried out more quickly and easily in that the back-up rollscan be positioned from an idle position in which they are arranged outside the region where the chockof the support roll or intermediate rollmoves during slide-in or withdrawal, to an operating position in which they rest against the work roll

Roll stand

Device for removing liquid from the surface of a band

Process and device for rolling out the ends of a coiled strip in a

The present invention relates to a process and to a device for the rolling of bands (B) with uneven thickness and/or length distribution over their width by using at least one control roller (5, 9, 21, 27, 41, 43) located on the inlet and/or outlet side of a mill (W, W', W') and capable of swiveling in its position relative to the band (B), making it possible in case of minor disturbances, independently of the existing operating conditions, to compensate for the running of a band caused by unevenness in the thickness and/or length distribution over the width of the band. This is achieved according to the invention in that the distribution of the tensile stress over the width of the band (B) is detected with at least one measuring device (7, 11, 25) and in that the control roller (5, 9, 21, 27, 41, 43) is adjusted in function of the detected distribution of tensile stress until the detected distribution of tensile stress is equal to a desired value.

Process and device for rolling bands with uneven thickness and/or length

In a roll stand, more particularly a cluster roll stand, having guard plates (15, 21) which are disposed opposite one another in pairs above and below the strip (B) processed in the roll stand in the run-in zone (E) and run-out zone (A) of the roll stand and which extend into the roll stand substantially as far as the stand working rolls (1, 8) supported by supporting rolls (2-6a, 9-13a) and/or undriven supporting rollers, the lower guard plates (21) each being connected to the lower member (14) of the stand pivotably around a pivot (22) disposed axis-parallel with the working rolls (1, 8), the objective was to improve the protective effect of the guard plates (15, 21), while at the same time reducing expenditure on the lifting means required to lift the upper working roll (1). This is achieved by the features that the upper guard plates (15) are each connected to the vertically adjustable upper member (7) of the stand pivotably around a pivot (16) also disposed axis-parallel with the working rolls (1, 8) and each have at their tip associated with the working rolls (1, 2) supporting means (19) which entrain the upper working roll (1) when the guard plates (15) are pivoted in the direction of the upper member (7) of the stand.

A device for removing liquid from the surface of a moving strip (B), more particularly a rolled strip on a roll stand, by means of a gas, more particularly air, blown on to the moving strip (B), is characterized according to the invention in that disposed transversely of the direction (L) in which the strip runs is a slot nozzle (3) which is directed at the strip surface at an angle (.beta.) of 45.degree. to 90.degree. of its jet oppositely to the direction (L) in which the strip runs, the ratio between the distance (h) of the slot nozzle (3) from the moving strip (B) and the width (s) of the slot is in the range h/s=2 to h/s=10, so that the velocity of emergence of the gas jet blown by the slot nozzle (3) on to the strip (B) is in the range of 0.3&lt;Mach&lt;2, and a suctional removal gap (4) is disposed above the strip (B) at a distance of 5 to 25 nozzle distances (h) in the direction (L) in which the strip (B) runs upstream of the line of impingement of the gas jet emerging from the slot nozzle (3).

Device for removing liquid from the surface of a moving strip

The invention relates to a device for cooling a laminar material, more particularly a metal strip 2, by liquid nozzles 11a, 11b, 12a, 12b disposed on both sides. The liquid nozzles 11a, 11b, 12a, 12b take the form of full-jet nozzles and so act upon the surface of the material 2 to be cooled by rebounding jets that zones of shooting flow SS are formed around the point of impingement of the individual rebounding jets.

Device for cooling a laminar material, more particularly a metal strip

The invention relates to a positioning apparatus for coils, more particularly of metal strip, to be fitted on to a reeling drum. To determine on all sides the internal diameter of the coil 1 and its vertical and lateral position in relation to the reeling drum 2, the internal contour of the coil 1 is determined by a measuring head 13 which measures 360.degree. and, in dependence on the measured values to be obtained, by comparison with the corresponding measured values for the reeling drum 2 adjusting members are acted upon for the vertical adjustment of a lifting carriage 3 for the coil 1 and/or the lateral offsetting and/or the relative rotation between the coil 1 and the reeling drum 2.

Positioning apparatus for coils, more particularly of metal strip, to be

The invention relates to a cluster mill having four columns 5, 6 connecting the lower part 1 and the upper part 2 for the sets of rolls 3, 4. Associated with each column 5, 6 is a lifting device 11, 12 enabling the lower part 1 and the upper part 2 to be moved wide apart. A hydraulic roll screw-down system independent thereof has an adjustable piston 16 which can be attached to the column 5, 6 and between which and the bottom of its cylinder casing 17 borne by the upper part 2 the necessary roll force can be built up. Due to the adjustable piston 16, for any required roll gap the cylinder space in which the pressure for the roll force is built up has a low height.

Cluster mill with hydraulic screw-down

A deflection measuring roller includes mutually non-rotatable rings having orce sensors for determining the stress distribution of undirected, flexible strips. A receiving chamber is made of a window which is formed in the material of the annular wall and within which the force sensor and wedge are provided.

Deflection measuring roller

In a method for cold-rolling sheets and strips, measured values which characterize the surface evenness, especially the tensile stress distribution, are formed on the delivery side of a rolling mill and, in dependence thereon, adjusting members of the rolling mill are actuated which form part of at least one regulating circuit for the surface evenness of the rolled sheets and strips. Incorrect adjustments and disruptions in the rolling process on the basis of the different time responses of the individual adjusting members are avoided by adjusting the adjusting members at speeds so matched to one another that during at least a portion of the adjusting time, the ratio of the adjustments of the participating adjusting members remains constant, and all adjusting members reach their desired values simultaneously.

Method for cold-rolling sheets and strips

A device for measuring stress distribution across the width of flexible litudinally moving strip material, such as strip steel during coldrolling. The device includes a deflection measuring roller comprised of a plurality of rotatable sections mounted side-by-side. Some of the sections have force pick-ups fitted therein and the elements cooperatively function to detect and measure deflection as an indication of stress distribution across the strip.

Apparatus for measuring stress distribution across the width of flexible

Apparatus for measuring stress distribution across the width of a flexible strip travelling in the direction of its length, comprising a pick-up deflector roller having a plurality of rings, encased in a tire of flexible material, the edges of the rings being cut away to produce local stress in the tire as compared with a smooth cylindrical roller.

An arrangement for measuring stress distribution over the width of a longdinally moving flexible strip wherein there are provided force transmitters and a deflection measuring roller made up of closely adjacent rings running with the strip under stress and reacting upon said force transmitters, wherein the force transmitters produce parallel switching output signals and rotate in a distortion-free position with said rings which are secured relatively to each other against distortion, the force transmitters being offset peripherally relative to adjacent rings and being connected in parallel circuit groups to a common rotation transmitter for which the output is designed for measurement value processing.

Growing community of inventors

Kaarst, Germany

Bernd Berger