Patents by Inventor Michael Zahedi

Michael Zahedi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11987859
    Abstract: Energy-efficient production of a ferritic hot-rolled strip (6) in an integrated casting-rolling plant (1), which modifies the known processes for producing a ferritic hot-rolled strip (6) in an integrated casting-rolling plant (1) so that the ferritic hot-rolled strip (6) can be produced significantly more energy-efficiently but nevertheless has good metallurgical properties and a good surface quality.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: May 21, 2024
    Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBH
    Inventors: Heinz Fürst, Simon Grosseiber, Thomas Lengauer, Michael Zahedi
  • Publication number: 20230271247
    Abstract: A casting-rolling integrated plant that is capable of producing, from a steel melt, in a cost-effective manner and with high productivity, a hot-rolled finished strip having a thickness of ?0.6 mm, an excellent flatness, and an excellent profile by dividing the thickness reduction into at least three stages (roughing, intermediate and finishing train), measuring the actual profile after the roughing, intermediate and finishing train, and equipping the stands in the roughing, intermediate and finishing train with actuators for influencing the strip profile and/or the strip flatness.
    Type: Application
    Filed: June 16, 2021
    Publication date: August 31, 2023
    Inventors: Simon GROSSEIBER, Thomas LENGAUER, Bernd LINZER, Gero SCHWARZ, Roman WINKLER, Michael ZAHEDI
  • Publication number: 20230241657
    Abstract: A method and an installation for inductively heating flat objects that are transported in a feed direction. The installation has at least one transverse field inductor device which extends transversely to the feed direction over the width of the flat object and has a longitudinal axis running parallel to the transverse axis of the flat object. The transverse field inductor device is positioned such that the longitudinal axis extends in a vertical plane obliquely with respect to the transverse axis of the flat object. With the method it is possible to vary the distance between the flat object and the inductor device and thus the temperature distribution over the transverse profile of the flat object so that the flat object is heated homogeneously.
    Type: Application
    Filed: July 8, 2021
    Publication date: August 3, 2023
    Inventors: Heinz FÜRST, Simon GROSSEIBER, Thomas LENGAUER, Achim THUS, Adrej UMBRASKO, Michael ZAHEDI
  • Patent number: 11712725
    Abstract: A framework cooler (20) for cooling a steel strip (50), installed in a roller framework (11), in place of the work rolls (5) and their associated installation pieces (5a and 5b). The framework cooler (20) is sized to be installed into the roller framework (11) through the operator-side roller stands (1) of the roller framework (11). The cooler (20) includes a lower (21b) and an upper water tank (21a), each having a connection (22) for a coolant, and includes a plurality of cooling nozzles (23), or cooling tubes (23a) arranged in the depth direction (T) of the framework cooler (20) or at least one cooling slot (24) extending in the depth direction (T). The bottom and top sides of the steel strip (50) may be cooled.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: August 1, 2023
    Inventors: Thomas Lengauer, Bernd Linzer, Alois Seilinger, Michael Zahedi
  • Publication number: 20220241833
    Abstract: A framework cooler (20) for cooling a steel strip (50), installed in a roller framework (11), in place of the work rolls (5) and their associated installation pieces (5a and 5b). The framework cooler (20) is sized to be installed into the roller framework (11) through the operator-side roller stands (1) of the roller framework (11). The cooler (20) includes a lower (21b) and an upper water tank (21a), each having a connection (22) for a coolant, and includes a plurality of cooling nozzles (23), or cooling tubes (23a) arranged in the depth direction (T) of the framework cooler (20) or at least one cooling slot (24) extending in the depth direction (T). The bottom and top sides of the steel strip (50) may be cooled.
    Type: Application
    Filed: April 18, 2022
    Publication date: August 4, 2022
    Inventors: Thomas LENGAUER, Bernd LINZER, Alois SEILINGER, Michael ZAHEDI
  • Publication number: 20220193741
    Abstract: A heating device and a method for the inductive heating of a flat steel strip in a hot rolling mill. The heating device is between two rolling trains of the hot rolling mill and the flat steel strip runs at a speed through the heating device in a transporting direction. The heating device includes: transverse-field modules arranged one after the other along the transporting direction of the flat steel strip; longitudinal-field modules arranged one after the other along the transporting direction of the flat steel strip and arranged before or after the transverse-field modules along the transporting direction; a first power supply supplying at least one transverse-field module with a first alternating voltage; and a second power supply supplying at least one longitudinal-field module with a second alternating voltage. The power supplies have a converter and an electrically connected capacitor bank with multiple capacitors connected in parallel.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 23, 2022
    Applicant: Primetals Technologies Austria GmbH
    Inventors: Thomas Lengauer, Bernd Linzer, Michael Zahedi
  • Publication number: 20220186340
    Abstract: Energy-efficient production of a ferritic hot-rolled strip (6) in an integrated casting-rolling plant (1), which modifies the known processes for producing a ferritic hot-rolled strip (6) in an integrated casting-rolling plant (1) so that the ferritic hot-rolled strip (6) can be produced significantly more energy-efficiently but nevertheless has good metallurgical properties and a good surface quality.
    Type: Application
    Filed: December 14, 2021
    Publication date: June 16, 2022
    Inventors: Heinz FÜRST, Simon GROSSEIBER, Thomas LENGAUER, Michael ZAHEDI
  • Patent number: 11331704
    Abstract: A framework cooler (20) for cooling a steel strip (50), installed in a roller framework (11), in place of the work rolls (5) and their associated installation pieces (5a and 5b). The framework cooler (20) is sized to be installed into the roller framework (11) through the operator-side roller stands (1) of the roller framework (11). The cooler (20) includes a lower (21b) and an upper water tank (21a), each having a connection (22) for a coolant, and includes a plurality of cooling nozzles (23), or cooling tubes (23a) arranged in the depth direction (T) of the framework cooler (20) or at least one cooling slot (24) extending in the depth direction (T). The bottom and top sides of the steel strip (50) may be cooled.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: May 17, 2022
    Inventors: Thomas Lengauer, Bernd Linzer, Alois Seilinger, Michael Zahedi
  • Publication number: 20220086962
    Abstract: A device (1) for inductive heating of a workpiece (2) in a rolling mill, the device (1) including: a converter (3) for creating an alternating voltage, a capacitor bank (6) electrically connected to the converter (3), and having a plurality of capacitors (7) connected in parallel, a working field (8), in which an upper coil (10) and a lower coil (11) are arranged. The workpiece (2) is able to be passed between the coils (10, 11) and is thereby inductively heated by cross-field heating. A housing (4) arranged next to, below or above the working field (8). The converter (3) and capacitor bank (6) are arranged in the housing (4). The coils (10, 11) are each electrically connected to the capacitor bank (6) by a flexible cable (12, 13). The cable (12, 13) is a coaxial cable (27), with one phase of the alternating voltage applied to an inner conductor (28) and the other phase of the alternating voltage applied to an outer conductor (29) of the coaxial cable (27).
    Type: Application
    Filed: January 13, 2020
    Publication date: March 17, 2022
    Inventors: Heinz FÜRST, Thomas LENGAUER, Bernd LINZER, Michael ZAHEDI
  • Publication number: 20200156130
    Abstract: A framework cooler (20) for cooling a steel strip (50), installed in a roller framework (11), the framework being in place of the work rolls (5) and the associated installation pieces (5a and 5b). For this purpose, the framework cooler (20) is sized such that it can be installed into the roller framework (11) through the operator-side roller stands (1) of the roller framework (11). The framework cooler (20) includes a lower water tank (21b) and an upper water tank (21a), each having a connection (22) for a coolant, and a plurality of cooling nozzles (23), or cooling tubes (23a) arranged in the depth direction (T) of the framework cooler (20) or at least one cooling slot (24) extending in the depth direction (T) of the framework cooler (20). The lower and the upper water tanks (21b and 21a) can be thereby supplied with coolant by the respective connection (22).
    Type: Application
    Filed: July 19, 2018
    Publication date: May 21, 2020
    Inventors: Thomas LENGAUER, Bernd LINZER, Alois SEILINGER, Michael ZAHEDI
  • Patent number: 10583473
    Abstract: During stabilization of a metal band (1) on a roller path (2), the band (1) is to be only minimally cooled via the stabilisation. A device for that includes multiple protective runners (3), each oriented in the conveyor direction (R), for guiding the band (1), wherein the protective runners (3) are arranged above the roller path (2) and the protective runners (3) are at a distance from one another in a width direction (B) of the band (1). Multiple rows (4) of nozzles are arranged in the conveyor direction (R) or in the width direction (B) of the band. Each row (4) of nozzles includes multiple nozzles (5). The nozzles (5) are set back in relation to an underside of the protective runners (3), such that an arched band (1) cannot come into contact with the nozzles (5).
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: March 10, 2020
    Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBH
    Inventors: Bernd Linzer, Pascal Ostheimer, Juergen Schiefer, Michael Zahedi
  • Publication number: 20190337033
    Abstract: During stabilization of a metal band (1) on a roller path (2), the band (1) is to be only minimally cooled via the stabilisation. A device for that includes multiple protective runners (3), each oriented in the conveyor direction (R), for guiding the band (1), wherein the protective runners (3) are arranged above the roller path (2) and the protective runners (3) are at a distance from one another in a width direction (B) of the band (1). Multiple rows (4) of nozzles are arranged in the conveyor direction (R) or in the width direction (B) of the band. Each row (4) of nozzles includes multiple nozzles (5). The nozzles (5) are set back in relation to an underside of the protective runners (3), such that an arched band (1) cannot come into contact with the nozzles (5).
    Type: Application
    Filed: May 24, 2017
    Publication date: November 7, 2019
    Inventors: Bernd LINZER, Pascal OSTHEIMER, Juergen SCHIEFER, Michael ZAHEDI
  • Publication number: 20160101450
    Abstract: A method and device for rapid discharging of metallic plates (21, 22) particularly thick plates, from a rolling mill, to enable secure discharge of relatively short plates (21, 22) from the rolling mill at high velocity and low cycle times by transporting a first plate (21) on a roller bed (9, 13) in the transport direction (T), and preferably the first plate (21) is accelerated in the transport direction (T); depositing the first plate (21) on the roller bed (9, 13); transporting a second plate (22) on the roller bed (9, 13) in the transport direction (T); depositing the second plate (22) in the transport direction before the first plate (21) on the roller bed (9, 13); and discharging the first and the second plates (21, 22) from the roller bed (9, 13) onto a storage (24), wherein the discharging occurs crosswise to the transport direction (T).
    Type: Application
    Filed: April 2, 2014
    Publication date: April 14, 2016
    Inventors: Bernd LINZER, Wolfgang PEITL, Bo YANG, Michael ZAHEDI
  • Patent number: 8196444
    Abstract: A bending device for two working rolls of a rolling stand. Guide blocks provided in lateral roll housings for guiding two pressure-transmission bodies vertically adjustably with respect to each other and, on which the working rolls are supported via chocks. Bending cylinders are arranged in pairs between the pressure-transmission bodies at each end of the rolls. Each cylinder has a piston rod acting on one pressure-transmission body and a cylinder at the respective other pressure-transmission body. Each pressure-transmission body is supported on a respective guide block in a sliding manner. So that loads acting on the pressure-transmission bodies can be introduced into the guide block free of edge pressure, the pressure-transmission bodies are supported on the respective guide blocks in a sliding manner by self-adjusting wearing plates which include surfaces that enable both sliding and pivoting of the bodies with respect to the guide blocks.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: June 12, 2012
    Assignee: Siemens Vai Metals Technologies GmbH
    Inventors: Gerald Hohenbichler, Armin Schertler, Michael Zahedi
  • Patent number: 8127826
    Abstract: The invention relates to a method for producing a cast steel strip of preferably hot crack-sensitive or hot-brittle steel quality by means of a strip casting plant and to a strip casting plant for carrying out this method. In this case, steel melt is conducted into a melt space formed by two casting rolls and two sideplates, slab shells are formed in the melt space on cooled surface areas of the casting rolls and are brought together in the strip forming cross section between the casting rolls to form an at least partly solidified steel strip, the cast steel strip is then guided along the surface area of one of the two casting rolls from a vertical casting direction into an essentially horizontal transport direction, and the cast steel strip is supplied essentially horizontally on a transport device to a strip winding device and is wound there into a coil.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: March 6, 2012
    Assignee: Siemens Vai Metals Technologies GmbH
    Inventors: Gerald Hohenbichler, Gerald Eckerstorfer, Michael Zahedi
  • Publication number: 20100078146
    Abstract: The invention relates to a method for producing a cast steel strip of preferably hot crack-sensitive or hot-brittle steel quality by means of a strip casting plant and to a strip casting plant for carrying out this method. In this case, steel melt is conducted into a melt space formed by two casting rolls and two sideplates, slab shells are formed in the melt space on cooled surface areas of the casting rolls and are brought together in the strip forming cross section between the casting rolls to form an at least partly solidified steel strip, the cast steel strip is then guided along the surface area of one of the two casting rolls from a vertical casting direction into an essentially horizontal transport direction, and the cast steel strip is supplied essentially horizontally on a transport device to a strip winding device and is wound there into a coil.
    Type: Application
    Filed: December 3, 2009
    Publication date: April 1, 2010
    Inventors: Gerald HOHENBICHLER, Gerald ECKERSTORFER, Michael ZAHEDI
  • Publication number: 20090100891
    Abstract: A bending device for two working rolls of a rolling stand. Guide blocks provided in lateral roll housings for guiding two pressure-transmission bodies vertically adjustable with respect to each other and, on which the working rolls are supported via chocks. Bending cylinders are arranged in pairs between the pressure-transmission bodies at each end of the rolls. Each cylinder has a piston rod acting on one pressure-transmission body and a cylinder at the respective other pressure-transmission body. Each pressure-transmission body is supported on a respective guide block in a sliding manner. So that loads acting on the pressure-transmission bodies can be introduced into the guide block free of edge pressure, the pressure-transmission bodies are supported on the respective guide blocks in a sliding manner by self-adjusting wearing plates which include surfaces that enable both sliding and pivoting of the bodies with respect to the guide blocks.
    Type: Application
    Filed: April 2, 2007
    Publication date: April 23, 2009
    Inventors: Gerald Hohenbichler, Armin Schertler, Michael Zahedi
  • Publication number: 20080105399
    Abstract: The invention relates to a method for producing a cast steel strip of preferably hot crack-sensitive or hot-brittle steel quality by means of a strip casting plant and to a strip casting plant for carrying out this method. In this case, steel melt is conducted into a melt space formed by two casting rolls and two sideplates, slab shells are formed in the melt space on cooled surface areas of the casting rolls and are brought together in the strip forming cross section between the casting rolls to form an at least partly solidified steel strip, the cast steel strip is then guided along the surface area of one of the two casting rolls from a vertical casting direction into an essentially horizontal transport direction, and the cast steel strip is supplied essentially horizontally on a transport device to a strip winding device and is wound there into a coil.
    Type: Application
    Filed: September 20, 2005
    Publication date: May 8, 2008
    Inventors: Gerald Hohenbichler, Gerald Eckerstorfer, Michael Zahedi
  • Patent number: 7156150
    Abstract: A two-roll casting installation with two casting rolls which rotate in opposite directions about horizontal axes and forming a casting gap for forming and discharging a thin cast metal strip. A sealed housing which has a base and surrounds a conveying path for the metal strip which leaves the casting gap and which strip is from a vertical casting direction into an approximately horizontal conveying direction. Diverter devices divert the metal strip within the housing. A displaceable scrap collection container removes scrap and scale produced from the two-roll casting installation. To minimize the penetration of external air into the housing, the base of the housing, at least in a subregion, forms a collection trough for the scrap, which is part of an emptying device, and a displaceable scrap collection container is arranged in a receiving position below the emptying device.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: January 2, 2007
    Assignee: Voest-Alpine Industrieanlagenbau GmbH & Co.
    Inventors: Michael Zahedi, Thomas Stepanek, Gerald Hohenbichler, Franz Plöckinger, Karl Klima
  • Publication number: 20060118270
    Abstract: A two-roll casting installation with two casting rolls which rotate in opposite directions about horizontal axes and forming a casting gap for forming and discharging a thin cast metal strip. A sealed housing which has a base and surrounds a conveying path for the metal strip which leaves the casting gap and which strip is from a vertical casting direction into an approximately horizontal conveying direction. Diverter devices divert the metal strip within the housing. A displaceable scrap collection container removes scrap and scale produced from the two-roll casting installation. To minimize the penetration of external air into the housing, the base of the housing, at least in a subregion, forms a collection trough for the scrap, which is part of an emptying device, and a displaceable scrap collection container is arranged in a receiving position below the emptying device.
    Type: Application
    Filed: April 22, 2004
    Publication date: June 8, 2006
    Inventors: Michael Zahedi, Thomas Stepanek, Gerald Hohenbichler, Franz Plockinger, Karl Klima