Sms Demag Ag

Sms Siemag Aktiengesellschaft

Sms Schloemann-siemag Aktiengesellschaft

Sms Group Gmbh

Fontaine Engineering Und Maschinen Gmbh

Holger Behrens

Michael Zielenbach

Rolf Brisberger

Walter Trakowski

Bernhard Tenckhoff

Bodo Falkenhahn

Thomas Daube

Klaus Adolf Frommann

Olaf Norman Jepsen

Lutz Kümmel

Hans-Georg Hartung

Peter De Kock

Andreas Gramer

Hans Georg Hartung

Ralf-Hartmut Sohl

Ulrich Sommers

Lutz Kuemmel

Robert Berg

Rüdiger Zerbe

Evgeny Stepanovich Senokosov

Andrei Evgenievich Senokosov

Robert Jürgens

Karl Keller

Alexandre Lhoest

Klaus Frommann

Michael Tomzig

Matthias Kretschmer

Manuel Bendler

Christian Klinkenberg

Michael Haentjes

R&uuml;diger Grimmel

Dominique Fontaine

Rolf Stodt

G&uuml;nter Kneppe

Rolf Bünten

Eckart Schunk

Pascal Fontaine

Werner Bechem

Joachim Kuhlmann

Bruno B&ouml;hmer

Carsten Andreas Klein

Bernd Kreft

Mostafa Biglari

Babak Taleb-Araghi

Lutz Küemmel

Peter Schüler

Bodo Block

Frank Bergmann

Ralf Ulrich

Stefan Melster

Hans-Peter Dr{umlaut Over (u)}gh

Gernot Richter

Christian Lengsdorf

Christos Karinos

Robert Juergens

Jan Christoph Häusler

Fritz Luckmann

A heat-treatment method for controlling austenite content in steel during conveying, heating and cooling the steel though a furnace. The method includes heating the steel until reaching a first location, then cooling the steel until reaching a downstream second or third location in the furnace. First, a quality window of the austenite content having minimum/maximum values at the second or third locations is determined. Upstream from the second/third locations, temperature of the steel for the second/third locations is predicted by a heat-transfer equation and/or conveyance speed of the steel through the furnace. The austenite content is then predicted at the second/third locations by metallurgical/data-based modelling using the predicted temperature. The furnace temperature and/or conveyance speed is adjusted when the predicted steel austenite content for the second/third locations is outside the quality window, whereby after the furnace adjustment, the predicted austenite content for the second/third locations falls within the quality window.

Method for the heat treatment of a metal based on a predicted austenite content to achieve austenite content within a quality window

The invention relates to a method for rolling a metal product (), wherein the metal product is subjected to a rolling operation at a first station (), which rolling operation is controlled by a control device (), wherein the product () is subject to a measurement at a second station (), wherein the product () is subjected to a further processing operation at a third station (), and wherein the product () is in a specified quality at a fourth station (). In order to increase the quality of the produced strip, the invention provides that the method has the following steps: a) measuring the value of a material property (IW) that the second station (); b) feeding the value measured at the second station () to the control device (), comparing the measured value with a value (SW) stored in the control device (), and adjusting a parameter (PPI) if the measured value deviates from the stored value (SW), e) measuring a value of a quality material property (Q) at the fourth station (); d) comparing the measured value with a stored value, and initiating a measure to influence the quality material property (Q) if the measured value deviates from the stored value beyond a permissible tolerance.

Method for rolling and/or heat treating a metal strip

The invention relates to a method for coating a metal strip with the aid of a coating device. Within the coating device, the strip first runs through a coating container with a liquid coating agent and then a stripping nozzle device for stripping off excess coating agent from the surface of the strip. After the stripping nozzle device, the strip typically runs through a strip stabilizing device with a plurality of magnets on both broad sides of the strip. A form control deviation is determined as the difference between a determined actual form of the strip and a specified desired form of the strip and this form control deviation is used for activating the magnets of the strip stabilizing device in order to transform the actual form of the strip into the desired form. As an alternative possibility for producing a moment, in particular a bending moment, in the strip, on the basis of the form control deviation the magnets of the strip stabilizing deviceare moved in the widthwise direction R of the stripinto a traversing position in relation to the magnets on the respectively opposite broad side of the strip.

Method and coating device for coating a metal strip

A method for operating a coating device for coating a metal strip. The corresponding coating device has an electromagnetic strip-stabilizing device having a plurality of electromagnetic actuators or coils for applying forces to the metal strip. In order to ensure that the strip-stabilizing device is operated only within the operating limits thereof, the magnitudes of the set currents for the actuators or the coils are compared with a specified current threshold value or the forces applied to the metal strip by the actuators are compared with a specified force threshold value and the correction roller is moved into such an adjustment position that the magnitudes of the set currents are below the current threshold value or the magnitudes of the forces are below the force threshold value.

Method for operating a coating device for coating a metal strip, and coating device

A method for descaling a metal strip, in which the metal strip is guided in a direction of conveyance through at least two plasma descaling units, in which it is subjected to a plasma descaling, where the plasma descaling is followed directly or indirectly by an operation in which the metal strip is coated with a coating metal by hot dip galvanizing of the metal strip. The metal strip is coated with the coating metal by a vertical passage process. The coating metal is retained as a coating bath in a coating tank by an electromagnetic seal. The metal strip preheated by the plasma descaling is guided, without exposure to air, from the plasma descaling into a protective gas atmosphere of a continuous furnace necessary for the coating.

Method and device for descaling a metal strip

The invention relates to a device for hot-dip coating a metal strand (), especially a steel strip, in which the metal strand () is vertically guided through a container () accommodating the molten coating metal () and through a guide channel () disposed upstream thereof. The inventive device comprises at least two inductors () disposed at both sides of the metal strand () in the area of the guide channel () that are used to generate an electromagnetic field for retaining the coating metal () in the container (), and at least one sensor (') for detecting the position (s) of the metal strand () in the area of the guide channel (). In order to simplify and render more precise the detection of the position of the metal strand in the guide channel, the sensor for detecting the position of the metal strand () consists of two coils (&#x2032;) that are disposed, when seen from the direction of conveyance (R) of the metal strand (), within the height (H) of the inductors () between the inductors () and the metal strand (). The invention further relates to a method for hot-dip coating a metal strand.

Method and device for hot-dip coating a metal strand

The invention relates to a method of connecting of strips to an endless strip with a clamping arrangement () with a clamping device (-r,-r) on the inlet side and a clamping device (--) on the outlet side, a cutting arrangement () with an upper cutter () and a lower cutter () and with a joining arrangement, wherein in a first step the clamping devices are opened and two strip ends are introduced, and in a subsequent step in the next step the strip ends are introduced, and in a subsequent step in the next step the strip ends are cut by means of the cutting arrangement, before they are moved into a joining position and are joined there.

Method of connecting strips

A method and a device for descaling a metal strip, in which the metal strip is guided in a direction of conveyance through at least one plasma descaling unit in which it is subjected to a plasma descaling. The metal strip is subjected to an automatically controlled cooling process in a cooling unit following the plasma descaling in the one or more plasma descaling units in such a way that it has a well-defined temperature downstream of the cooling unit.

Method and device for descaling metal strip

The invention relates to a device () for the connecting of strips to an endless strip with a clamping arrangement () with a clamping device (--) on the inlet side and a clamping device (--) on the outlet side, a cutting arrangement () with an upper cutter () and a lower cutter () and with a joining arrangement, in which at least the clamping device (--) on the inlet side and/or the clamping device (--) on the outlet side is constructed as a premountable unit.

Device for the connecting of strips

The invention relates to a method for hot-dip coating a metal strand (), especially a steel strip, according to which the metal strand () is vertically guided through a container () accommodating the molten coating metal () and through a guide channel () disposed upstream thereof. An electromagnetic field is generated in the area of the guide channel () by means of at least two inductors () disposed at both sides of the metal strand () to retain the coating material () in the container (). In order to stabilize the metal strand () in a center position in the guide channel (), an electromagnetic field, superimposing the electromagnetic field of the inductors (), is generated by means of at least two additional coils () disposed at both sides of the metal strand (). In order to improve efficiency of the control of the metal strand in the guide channel, the center position of the metal strand () in the guide channel () is stabilized in a closed control loop by carrying out the following steps: a) detecting the position (s, s', s&#x2033;) of the metal strand () in the guide channel (); b) measuring the induced current (I) in the inductors (); c) measuring the induced current (I) in the additional coils (); d) influencing the induced current (I) in the additional coils () depending on the parameters (s, I, I) measured in steps a) to c), in order to maintain the metal strand () in a center position in the guide channel (). The invention further relates to a device for hot-dip coating a metal strand.

The invention relates to a device for hot-dip coating a metal bar (), particularly a steel strip, in which the metal bar () is vertically directed through a container () receiving the molten coating metal () and a directing channel () that is arranged upstream thereof. Said device comprises at least two inductors () which are disposed on both sides of the metal bar () in the zone of the directing channel () and generate an electromagnetic field for retaining the coating metal () within the container (). In order to better control the coating process, the inventive device is characterized by a sealing means (') which is arranged above the directing channel () in the bottom area () of the container () and alternatively releases or interrupts the flow of molten coating metal () to the metal bar () and/or the directing channel ().

Device for hot-dip coating a metal bar

The invention relates to a device for hot dip coating a metal bar (), especially a steel strip, in which the metal bar () is directed vertically through a container () accommodating the molten coating metal () and through a guide channel () mounted upstream thereof. The inventive device comprises at least two inductors () which are arranged on both sides of the metal bar () in the area of the guide channel () and generate an electromagnetic field for retaining the coating metal () inside the container (). In order to relax the coating bath, the distance (d) between the walls () that delimit the guide channel () is not kept constant in a direction (N) extending perpendicular to the surface of the metal strip () in the zone (H) of the vertical extension of the guide channel (), which is located between the bottom side () thereof and the bottom area () of the container ().

Device for hot dip coating a metal strip

The invention relates to a device for hot dip coating metal strands (), particularly strip steel, in which the metal strand () can be vertically guided through a reservoir (), which accommodates the molten coating metal (), and though a guide channel () connected upstream therefrom. An electromagnetic inductor () is mounted in the area of the guide channel () and in order to retain the coating metal () inside the reservoir (), can induce induction currents in the coating metal () by means of an electromagnetic blocking field. While interacting with the electromagnetic blocking field, said induction currents exert an electromagnetic force. In order to prevent an intense heating of the metal strand caused by the electromagnetic inductor, the invention provides that the inductor () is connected to electric power supply means () that supply the inductor with an alternating current whose frequency (f) is less than 500 Hz. In particular, a mains frequency of 50 Hz is intended.

Device for hot dip coating metal strands

The invention relates to a method and a device for treating surfaces of metallic strip material (), especially for pickling rolled material, in a treatment channel (), with a pickling medium () containing acid. Jets () are set in the direction in which the strip is transported () at the entrance to the channel () and in the opposite direction that in which the strip is transported at the exit of the channel (). The aim of the invention is to produce a closed liquid film with some turbulence on the surface of the strip. Said film should be maintained as far as the exit () of the channel. To this end, additional jets () between the channel entrance () and the channel exit () are oriented in the opposite direction to the direction in which the strip is transported () and the pickling medium () is further delayed in flowing out at the channel exit () by mechanical resistance devices () situated in the path of the transport channel ().

Method and device for treating the surfaces of metallic strip material, especially for pickling rolled material

The invention relates to a device for hot dip coating metal strand (), particularly strip steel, in which the metal strand () can be vertically guided through a reservoir (), which accommodates the molten coating metal (), and though a guide channel () connected upstream therefrom. An electromagnetic inductor () is mounted in the area of the guide channel () and in order to retain the coating metal () inside the reservoir (), can induce induction currents in the coating metal () by an electromagnetic traveling field. While interacting with the electromagnetic traveling field, the induction currents exert an electromagnetic force. The inductor () has at least two main coils () that are arranged in succession in movement direction (X) of the metal strand (), and has at least two correction coils () for controlling the position of the metal strand () inside the guide channel () in direction (N), which is normal to the surface of the metal strand (). These correction coils are also arranged in succession in movement direction (X) of the metal strand (). In order to improve the efficiency of the control of the metal strip inside the guide channel, the invention provides that at least a portion of the correction coils (), when viewed in movement direction (X) of the metal strand (), are arranged so that they are offset with regard to one another perpendicular to movement direction (X) and perpendicular to direction (N) that is normal to the surface of the metal strand ().

Growing community of inventors

Erkrath, Germany

Holger Behrens