Sms Schloemann-siemag Aktiengesellschaft

Sms Group Gmbh

Sms Demag Ag

Sms Siemag Aktiengesellschaft

Sma Siemag Aktiengesellschaft

Sms Schloemann-siemaq

Jürgen Seidel

Dieter Rosenthal

Matthias Kipping

Wolfgang Rohde

Olaf Norman Jepsen

Johannes Alken

Uwe Baumgärtel

Christoph Klein

Klaus Klamma

Jürgen Klöckner

Matthias Peters

Peter Sudau

Wilfried Bald

Hans-Peter Richter

Hartmut Pawelski

Ralf Seidel

Axel Stavenow

Markus Reifferscheid

Ingo Schuster

Andreas Gramer

Hans Georg Hartung

Gunter Kneppe

Joachim Hafer

Jürgen Merz

Ralf Wachsmann

Karl-Ernst Hensger

Jürgen Armenat

Günter Kneppe

Waldemar Wolpert

Rolf Franz

Frank Benfer

Cosimo Andreas Cecere

Udo Falkenreck

Ernst Windhaus

Volker Kunze

Bernhard Ehls

Jürgen Müller

Rüdiger Holz

Jens Artel

Magnus Treude

Klaus Lazzaro

Stephan Krämer

Hartmut Hof

Wolfgang-Dietmar Hackenberg

Erich Hovestädt

Hans-Joachim Pölking

Heinz Hopfenziz

Joachim Ohlert

Heinrich Röse

Ralf Setzer

Denis Anders

Moritz Schilling

Peter Lixfeld

Horst Cerv

Andreas Wied

Rudolf-Franz Jäger

Andreas Piehlk

Hans-Heinrich Hartmann

Babak Taleb-Araghi

Peter Bonekemper

Heinz Dieter Gabriel

Walter Timmerbeul

Markus Langejürgen

Markus Finck

Horst GÄRTNER

A method ascertains control variables for active profile and flatness control elements for at least one rolling stand for hot rolling metal strip with a plurality of i=1 . . . I successive passes and for ascertaining profile and center flatness values for the hot-rolled metal strip. The occurrence of fluctuations in the center flatness of the metal strip after the individual passes and the resulting disadvantages for the rolling stability and the product quality are prevented. The method provides that, also for the target center flatness of the metal strip after a predetermined pass k with i=1 . . . <k< . . . I and for the target center flatness after the subsequent passes, pass-specific interval ranges are also specified in each case, and in that the successive calculation of the control variables and profile values is then carried out taking into account such additional specifications as well.

Method for ascertaining control variables for active profile and flatness control elements for a rolling stand and profile and average flatness values for hot-rolled metal strip

A method for producing a metal article, in particular a slab, a pre-strip, a strip, or a sheet, in which the article is first conveyed in the conveying direction through a scale washer and then through a rolling mill, wherein the rolling mill has at least one roll stand, in particular a first roll stand in the conveying direction. The article is subjected in the scale washer to at least one upper row of nozzles, which descales the upper side of the article, and to at least one lower row of nozzles, which descales the lower side of the article.

Method for producing a metal article

A device and a method for applying a liquid medium to a roll, and/or to a rolled material, a slab or a roughed strip and/or for removing the liquid medium, wherein the device has at least one spray nozzle, at least one row of spray nozzles or at least one cooling bar for spraying on the medium and at least one plate element, which is designed for collecting the medium. The roll is designed for rolling rolled material, wherein the rolled material, the slab or the roughed strip is conveyed in a conveying direction. In order to allow an improved cooling effect of a roll to be cooled or an improved removal of descaling water, the plate element has on one of its surfaces at least one directing element, which is designed for diverting medium into a transverse direction, which lies horizontally and transversely in relation to the conveying direction.

Device and method for applying a liquid medium to a roll and/or to a rolled material and/or for removing the liquid medium

A method for producing a metal strip in a cast-rolling installation, the cast-rolling installation includes the following: a casting machine, a first furnace, a first shear, a roughing train, a second furnace, a second shear, a finishing train, a cooling section, a reeling system, and a third shear. In order to allow a flexible reaction to different operating conditions, at least one of the following operating modes is selected in order to produce the strip: a) a continuous rolling, in which the casting machine, the roughing train, and the finishing train are operatively connected together; b) a continuous rolling in the roughing train and a single-strip rolling in the finishing train; c) a single-strip rolling in the roughing train and a single-strip rolling in the finishing train; and d) a semi-continuous rolling in the roughing train and/or a semi-continuous rolling in the finishing train.

Method for producing a metal strip in a cast-rolling installation

A method for producing metal strip in a rolling mill, so that as a result of a more accurate manufacturing of metal strips in the future, a more precise forecasting of the profile contour of the metal strip can be obtained over the width of the metal strip, as well as a more precise setting of the profile actuator of the rolling mill. A forecast value is calculated for the profile contour within the context of the simulation of the rolling process before the rolling of the metal strip. In contrast to that, the calculation in the simulation is not conducted prior to the rolling, but instead it is obtained by a post-calculation after the rolling of the metal strip has been carried out.

Method for producing metal strips

A method for the continuous casting of a metal strand in a continuous casting installation, in which, in a casting machine, the metal formed into a slab, with a still molten core, is brought out vertically from a mold, wherein, downstream of the mold in the conveying direction, the slab is made to move along a casting bow, through a number of casting bow segments, and is deflected into the horizontal, wherein each casting bow segment has a number of segment rollers, which are designed for coming into contact with the surface of the slab. In the region before the end of the casting machine, a number of segment rollers are lifted off from the surface of the slab, or are not installed in receptacles provided, and so the contact between the slab and the segment roller is interrupted or there is no contact.

Method for the continuous casting of a metal strand in a continuous casting installation and a continuous casting installation

A method and device for cooling a preliminary strip of metal in a hot rolling mill including work rolls by spraying a cooling agent on to the preliminary strip, screening the preliminary strip in an edge area of the strip from influence of the cooling agent, and deflecting the cooling agent in the area of the strip edges of the preliminary strip, wherein the cooling agent is deflected from the strip edges in an area of an inlet guide of a work a work roll.

Method and device for cooling a leader or band of a metal strand in a hot-rolling mill

A method for drying a strip () or sheet metal that runs through a rolling mill is characterized in that the strip () or the sheet metal is cooled to a lower temperature in a cooling section by means of a coolant, in particular a cooling liquid, down-stream of a hot strip mill () or, in case of sheet metal, after passing through at least one roll stand (), and in that the coolant, in particular the cooling liquid, and subsequently the moisture remaining on the strip () or the sheet metal is removed from the strip () or sheet metal by means of a drying apparatus ().

Method and apparatus for cooling and drying a hot-rolled strip or a metal sheet in a rolling mill

A method for lubricating rolls, especially work rolls () of a rolling stand, and rolling stock () passed between the rolls during the rolling operation, in which a lubricant-gas mixture, a lubricant-water-gas mixture, a lubricant-water mixture and/or a grease-medium mixture is applied to the rolls () or the rolling stock () on the run-in side of the rolling stand, is characterized by the fact that the mixture is prepared with at least one mixing device () in the area upstream of the rolling stand.

Method and device for lubricating rollers and a rolled strip of a rolling stand

The invention pertains to a device for influencing the temperature distribution over the width of a slab or a strip, particularly in hot strip rolling mill, wherein at least one cooling device is provided that features nozzles for applying a cooling medium, wherein the nozzles are arranged and/or actuated in such a way that the cooling medium is applied, in particular, at positions at which an elevated temperature is determined. The invention furthermore pertains to a device for influencing the state of the surface evenness of the strip by means of strip cooling, wherein the cooling device is controlled in dependence on the state of surface evenness of the strip in such a way that the surface unevenness is reduced or eliminated. In addition, this invention makes it possible to purposefully influence the strip contour, wherein the strip or the slab is cooled widthwise in such a way that the strip contour approximates a desired target contour more closely.

Device for influencing the temperature distribution over a width

The invention relates to a roll stand for rolling a product, in particular made of metal, comprising a pair of first rollers contacted by a pair of second rollers supporting the first rollers, wherein the first roller and the second rollers have an asymmetrical radius curve (CVC grind) relative to a center plane, wherein the radius curve of the first rollers is represented by a polynomial of the third or fifth order. In order to design the wedging of a second roller supporting a first roller such that optimal operating conditions are set, the invention proposes that the radius curve of the second roller is given by a polynomial of the third or fifth order, wherein special relationships are prescribed for the ratios between the coefficients.

Roll stand for rolling a product, in particular made of metal

The invention relates to a method for calibrating a rolling stand (), wherein in order to determine the relative pivot position of the roller set for setting a symmetrical roll gap and/or for determining the extension of the rolling stand () before the actual rolling process, the roller set is pressed against each other under a radial preset force and the resulting deformation of the rolling stand is preferably measured on the piston-cylinder unit (). The pivot position of the roller set and/or the frame module (M) determined based thereon are mathematically used during the subsequent rolling of a rolling stock between the working rollers () for adjusting the roller set. In order to attain a higher accuracy during rolling, the invention provides for the working rollers () to be axially adjustable relative to each other starting from a zero position that is not axially displaced, wherein the determination of the pivot position for setting a symmetrical roll gap and/or the determination of the frame module (M) are carried out in a relative displacement position of the working rollers () that is not equal to the zero position (calibration position), wherein the determined pivot position and/or the value for the frame module (M) are stored and mathematically used for further calculating the pivot position and/or the adjustment of the roller set during rolling of the rolling stock.

Method for calibrating two interacting working rollers in a rolling stand

The invention relates to a method and a finishing train for hot-rolling starting material. Starting material is finished in several successive roll stands () in the finishing train, the material cooling off because of heat loss. The material has to be reheated in order for the temperature of the material not to drop below the predefined lower threshold temperature value at low speeds within and at the discharge end of the finishing train. In order to use as little energy as possible for said reheating process, the reheating process within the finishing train is carried out for the first time only when the temperature of the material risks falling below the lower threshold temperature value for the first time relative to the direction of flow of the material because of heat loss. Furthermore, the temperature of the material during the reheating process is increased only to the point where the temperature of the material will not drop below the lower threshold temperature value (T) while the material is conveyed onto a next heating device that is mounted downstream in the direction of flow of the material and until the material is discharged from the mill train.

Method and finishing train for hot-rolling starting material

A method and a device for producing a metal strip by continuous casting and rolling, in which a thin slab is initially cast into a casting machine, and is subsequently rolled in at least one rolling train using primary heat from the casting cycle. The cast thin slab is passed between the casting machine and the at least one rolling train and at least one holding oven as well as at least one induction oven. The holding oven and the induction oven are activated or deactivated according to a selected mode of operation, that is, a first mode of operation for the continuous production of the metal strip and a second mode of operation for the discontinuous production of the metal strip.

Method and device for producing a metal strip by continuous casting and rolling

The invention relates to a method for rolling strips in the roll stand of a rolling mill, wherein said roll stand consists of two axially displaceable working rollers which are provided with a CVC-grinding or a similar contour and whose curved profile is expressed in a third or higher-order polynom and, simultaneously with simple handling of working rollers with large possibilities of adjusting the profile and flatness, the aim of said invention is to homogenize the working rollers wear. For this purpose, the increased cyclic shifting of the working rollers is induced or forced by a cyclic variation of the setting values of the curve of the working cylinders from one strip to another in a predetermined part of the adjustment range thereof, wherein the combined the action of the two adjustment systems (the curve of the working cylinders and the shift thereof) enables the parabolic effects of said two adjustment systems to supplement each other with a high approximation, thereby ensuring the flatness and, in addition, optimally homogenizing the working roller wear.

Method for rolling strips in a roll stand

Growing community of inventors

Kreuztal, Germany

Jürgen Seidel