Sms Demag Ag

Sms Siemag Aktiengesellschaft

Sms Group Gmbh

Walter Trakowski

Holger Behrens

Michael Zielenbach

Rolf Brisberger

Bernhard Tenckhoff

Olaf Norman Jepsen

Hans-Georg Hartung

Bodo Falkenhahn

Hans Streubel

Jochen Wans

Jörg Bausch

Robert Jürgens

Eckart Schunk

Klaus Adolf Frommann

Karls Rittner

Frank Bergmann

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 continuous casting mold, in particular a thin slab mold in which the flow of a liquid metal in the mold is influenced by a magnetic field generated by permanent magnets, wherein the permanent magnets have, over the width and/or height thereof, different magnetic strengths or are spaced from each other by different distances for a different field strength, so that to provide for variation of the magnetic field strength, the permanent magnets are differently adjusted in groups for changing a field strength distribution.

Magnetic device for continuous casting mold

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 (), 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 device for coating metal bars (), particularly steel strips, by hot dipping. At least some sections of the metal bar () are vertically guided through a container receiving the molten coating metal (), said metal bar () being guided by at least one roller () which runs on bearings. In order to increase the service life of the roller bearings, the roller, or at least the axis () thereof, penetrates the side walls () of the container () and is mounted outside the container ().

Device for coating metal bars by hot dipping

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 ().

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Duisburg, Germany

Walter Trakowski