Patents by Inventor Andreas Gramer

Andreas Gramer 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).

  • Publication number: 20190039107
    Abstract: A method for controlling a roller line, preferably a cold roller line, which has one or more roller stands each with two working rollers, which form a roller gap, through which a roller band is transportable. One or both working rollers can shift relative to the other, so that the roller gap is adjustable. The method includes making available a reference speed, which is a parameter for controlling the roller line, measurement of speed of the roller band before the inlet into the roller gap, measurement of the thickness of the roller band before the inlet into the roller gap, and adjustment of the roller gap of one or more roller frames in the roller line on the basis of measured speed and thickness before the inlet into the roller gap as well as the reference speed.
    Type: Application
    Filed: August 1, 2017
    Publication date: February 7, 2019
    Applicant: SMS group GmbH
    Inventors: Jörn SIEGHART, Andreas GRAMER
  • Patent number: 9643224
    Abstract: A device for cooling rolled stock, preferably for cooling during cold rolling, including a nozzle for applying a cooling medium to the rolled stock, wherein a cooling chamber that is in fluid communication with the nozzle and extends substantially parallel to the strip running plane is provided for applying the cooling medium to the rolled stock.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: May 9, 2017
    Assignee: SMS GROUP GMBH
    Inventors: Michael Breuer, Andreas Gramer, Johannes Alken, Dietrich Mathweis, Heiko Zetzsche
  • Publication number: 20150314349
    Abstract: A device for cooling rolled stock, preferably for cooling during cold rolling, including a nozzle for applying a cooling medium to the rolled stock, wherein a cooling chamber that is in fluid communication with the nozzle and extends substantially parallel to the strip running plane is provided for applying the cooling medium to the rolled stock.
    Type: Application
    Filed: November 26, 2013
    Publication date: November 5, 2015
    Applicant: SMS Siemag Aktiegesellschaft
    Inventors: Michael BREUER, Andreas GRAMER, Johannes ALKEN, Dietrich MATHWEIS, Heiko ZETZSCHE
  • Patent number: 8703242
    Abstract: The invention relates to a method for hot-dip coating hot-rolled steel strip, during which the steel strip passes through a pickling station, a rinsing station, a drying station, a heating furnace and then through a molten bath. The final thickness and the thickness tolerance of the hot-dip coated steel strip are achieved by a controlled thickness reduction in a roll stand in the process line. The achievement of the finished thickness is controlled by at least one thickness measuring unit at the outlet of the roll stand, and deviations upward or downward therefrom are fed back in the form of an actuating signal for actuating the roll stand in order to appropriately increase or decrease the thickness reduction. The invention also relates to an installation for producing a steel strip of the aforementioned type.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: April 22, 2014
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Hans-Georg Kloeckner, Andreas Gramer
  • Patent number: 8347682
    Abstract: An apparatus for cleaning cylinders (5) and/or rolls (5), e.g., working rolls (5) in a rolling stand, which are used for producing a rolled stock (1) such as strips or slabs, in which a liquid is sprayed onto the cylinders (5) at high pressure through several nozzles D1-Dn, a number of nozzles (D1-Dn) are stationary arranged in and/or on a nozzle beam (10), at least one on-off valve is associated with each nozzle (D1-Dn), and one or several nozzle(s) (D1-Dn) are sequentially switched on and off one after another starting from one end of the nozzle beam.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: January 8, 2013
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Andreas Gramer, Peter De Kock, Rolf Brisberger
  • Publication number: 20120255584
    Abstract: A method of cleaning cylinders (5) and/or rolls (5), e.g., working rolls (5) in a rolling stand, wherein a liquid is sprayed onto the cylinders (5) at high pressure through several nozzles (D1-Dn) of a number of nozzles (D1-Dn) stationary arranged in and/or on a nozzle beam (10), with at least one on-off valve being associated with each nozzle (D1-Dn), and one or several nozzle(s) (D1-Dn) are sequentially switched on and off one after another starting from one end of the nozzle beam.
    Type: Application
    Filed: April 13, 2012
    Publication date: October 11, 2012
    Inventors: Andreas Gramer, Peter De Kock, Rolf Brisberger
  • Publication number: 20120213932
    Abstract: The invention relates to a method for hot-dip coating hot-rolled steel strip, during which the steel strip passes through a pickling station, a rinsing station, a drying station, a heating furnace and then through a molten bath. The final thickness and the thickness tolerance of the hot-dip coated steel strip are achieved by a controlled thickness reduction in a roll stand in the process line. The achievement of the finished thickness is controlled by at least one thickness measuring unit at the outlet of the roll stand, and deviations upward or downward therefrom are fed back in the form of an actuating signal for actuating the roll stand in order to appropriately increase or decrease the thickness reduction. The invention also relates to an installation for producing a steel strip of the aforementioned type.
    Type: Application
    Filed: March 6, 2012
    Publication date: August 23, 2012
    Inventors: Hans-georg KLOECKNER, Andreas Gramer
  • Patent number: 8163348
    Abstract: The invention relates to a method for hot-dip coating hot-rolled steel strip, during which the steel strip passes through a pickling station, a rinsing station, a drying station, a heating furnace and then through a molten bath. The final thickness and the thickness tolerance of the hot-dip coated steel strip are achieved by a controlled thickness reduction in a roll stand in the process line. The achievement of the finished thickness is controlled by at least one thickness measuring unit at the outlet of the roll stand, and deviations upward or downward therefrom are fed back in the form of an actuating signal for actuating the roll stand in order to appropriately increase or decrease the thickness reduction. The invention also relates to an installation for producing a steel strip of the aforementioned type.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: April 24, 2012
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Hans-Georg Kloeckner, Andreas Gramer
  • Publication number: 20100307546
    Abstract: An apparatus for cleaning cylinders (5) and/or rolls (5), e.g., working rolls (5) in a rolling stand, which are used for producing a rolled stock (1) such as strips or slabs, in which a liquid is sprayed onto the cylinders (5) at high pressure through several nozzles D1-Dn, a number of nozzles (D1-Dn) are stationary arranged in and/or on a nozzle beam (10), at least one on-off valve is associated with each nozzle (D1-Dn), and one or several nozzle(s) (D1-Dn) are sequentially switched on and off one after another starting from one end of the nozzle beam.
    Type: Application
    Filed: May 24, 2010
    Publication date: December 9, 2010
    Inventors: Andreas Gramer, Peter De Kock, Rolf Brisberger
  • Publication number: 20100308541
    Abstract: The invention relates to a strip sealing gate (1) for sealing a first chamber (2) with a first pressure level (p1) in relation to a second chamber (3) with a second pressure level (p2) that differs from the first, a strip (4), in particular a metal strip, passing through both chambers (2, 3). According to the invention, at least two rollers (5, 6) are provided for sealing the chambers (2, 3), said rollers resting in a sealing manner on either side of the strip (4). The aim of the invention is to improve the sealing action. To achieve this, at least some sections of the circumference of at least one of the rollers (5, 6) are covered with a flexible elastic material (7) and said roller or rollers (5, 6) have an inner core (8) that is covered with a jacket consisting of the flexible elastic material (7). A central region (9) of the inner core (8) has a cylindrical contour (10) and the edge regions (11, 12) of the core (8) are flared.
    Type: Application
    Filed: October 12, 2007
    Publication date: December 9, 2010
    Applicant: SMS DEMAG AG
    Inventors: Lutz Kuemmel, Andreas Gramer, Holger Behrens, Matthias Kretschmer, Ralf-hartmut Sohl, Peter De Kock
  • Publication number: 20100194051
    Abstract: The invention relates to a belt discharger (1) for sealing a first space (2) with respect to a second space (3), the two spaces (2, 3) being passed by a belt (4), especially a metal belt, the spaces (2, 3) being sealed through provision of at least two rollers (5, 6) which adjoin the belt (4) with sealing on both sides. In order to achieve improved sealing action, the invention envisages that at least one roller (5, 6), in one of its axial end regions (7), has a sealing element (8) which is designed to laterally adjoin the belt edge (9) of the belt (4), with provision of adjustment means (10) with which the roller (5, 6) including sealing element (8) can be positioned in axial direction (a).
    Type: Application
    Filed: October 18, 2007
    Publication date: August 5, 2010
    Inventors: Andreas Gramer, Holger Behrens, Matthias Kretschmer, Ralf-Hartmut Sohl, Peter De Kock, Lutz Kuemmel
  • Publication number: 20100088967
    Abstract: The invention relates to a sealing gate (1) for strips for sealing a first chamber (2) in relation to a second chamber (3), a strip (4), in particular a metal strip, passing through both chambers (2, 3) and at least one sealing element (5) being provided for sealing the chambers (2, 3). The aim of the invention is to achieve an effective sealing action. To achieve this, the sealing element (5) has at least two gate elements (6, 7, 8, 9) that can be displaced in relation to one another and that have at least one sealing surface (10, 11, 12, 13), which is adapted to the edge contour of the strip (4) to be sealed.
    Type: Application
    Filed: October 12, 2007
    Publication date: April 15, 2010
    Inventors: Lutz Kümmel, Andreas Gramer, Holger Behrens, Matthias Kretschmer, Ralf-Hartmut Sohl, Peter Kock
  • Patent number: 7530250
    Abstract: The invention relates to a method for straightening a metal strip (1) which is guided in the direction of transportation (R) through a straightening machine (2) and is straightened. In the straightening device (2), the metal strip (1) is impinged upon by a straightening force (F) which is applied by a plurality of straightening rollers (3) in the direction (N) which is perpendicular to the surface of the metal strip (1). According to the invention, prior to the metal strip (1) entering into the straightening machine (2), the thickness (d) of the metal strip (1) is determined and the position (a) of the straightening rollers (3) in the direction (N) which is perpendicular to the surface of the metal strip (1) is taken into account according to the determined thickness (d).
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: May 12, 2009
    Assignee: SMS Demag AG
    Inventors: Hans-Georg Hartung, Andreas Gramer, Ralf-Hartmut Sohl, Peter de Kock, Bodo Falkenhahn
  • Publication number: 20090014037
    Abstract: The invention relates to a method of cleaning or descaling thin slabs and rolled strips in a hot strip rolling mill train and is characterized by use of cryogens such as oxygen or compound formed of cryogens with a carrier medium such as compressed air which are sprayed into slab surface or strip surface in liquid, deep-freeze form. The invention also relates to a method of cleaning and/or descaling of strips in a strip treatment installation with the above-mentioned characterized features, and to a correspondingly equipped apparatus.
    Type: Application
    Filed: November 17, 2006
    Publication date: January 15, 2009
    Inventors: Hans-Peter Richter, Heinrich Roese, Stephan Kramer, Walter Timmerbeul, Heinz-Dieter Gabriel, Juergen Seidel, Andreas Gramer
  • Publication number: 20080193655
    Abstract: The invention relates to a method for hot-dip coating hot-rolled steel strip, during which the steel strip passes through a pickling station, a rinsing station, a drying station, a heating furnace and then through a molten bath. The final thickness and the thickness tolerance of the hot-dip coated steel strip are achieved by a controlled thickness reduction in a roll stand in the process line. The achievement of the finished thickness is controlled by at least one thickness measuring unit at the outlet of the roll stand, and deviations upward or downward therefrom are fed back in the form of an actuating signal for actuating the roll stand in order to appropriately increase or decrease the thickness reduction. The invention also relates to an installation for producing a steel strip of the aforementioned type.
    Type: Application
    Filed: March 9, 2006
    Publication date: August 14, 2008
    Inventors: Hans-Georg Kloeckner, Andreas Gramer
  • Publication number: 20080098784
    Abstract: The invention relates to a method for straightening a metal strip (1) which is guided in the direction of transportation (R) through a straightening machine (2) and is straightened. In the straightening device (2), the metal strip (1) is impinged upon by a straightening force (F) which is applied by a plurality of straightening rollers (3) in the direction (N) which is perpendicular to the surface of the metal strip (1). According to the invention, prior to the metal strip (1) entering into the straightening machine (2), the thickness (d) of the metal strip (1) is determined and the position (a) of the straightening rollers (3) in the direction (N) which is perpendicular to the surface of the metal strip (1) is taken into account according to the determined thickness (d).
    Type: Application
    Filed: August 16, 2005
    Publication date: May 1, 2008
    Inventors: Hans-Georg Hartung, Andreas Gramer, Ralf-Hartmut Sohl, Peter de Rock, Bodo Falkenhahn
  • Publication number: 20080047314
    Abstract: The invention relates to a device (1) for the continuous lengthening of a metal strip (2) by traction, said device comprising, in the strip transporting direction (R), at least three S-roll units (3, 4, 5, 6, 7) each provided with at least two rolls (8, 9 10, 11, 12, 13, 14, 15, 16, 17). According to the invention, the rolls (8, 9, 10, 11, 12, 13, 14, 15, 16, 17) are positioned in such a way that the metal strip (2) is wound round them at a roll periphery angle (a) of more than 180°, and at least the second S-roll unit (4) in the strip transporting direction (R) comprises two rolls (10, 11) with different-sized diameters (D10, D11).
    Type: Application
    Filed: September 19, 2005
    Publication date: February 28, 2008
    Inventors: Andreas Gramer, Hans-Georg Hartung, Holger Behrens, Jan Hausler, Fritz Luckmann
  • Publication number: 20080023043
    Abstract: With a method of cleaning cylinders (5) and/or rolls (5), e.g., working rolls (5) in a rolling stand, which are used for producing a rolled stock (1) such as strips or slabs, wherein a liquid is sprayed onto the cylinders (5) at high pressure through several nozzles D1-Dn, a number of nozzles (D1-Dn) are stationary arranged in and/or on a nozzle beam (10), at least one on-off valve is associated with each nozzle (D1-Dn), and one or several nozzle(s) (D1-Dn) are sequentially switched on and off one after another starting from one end of the nozzle beam. The invention further relates to a corresponding apparatus.
    Type: Application
    Filed: September 12, 2005
    Publication date: January 31, 2008
    Applicant: SMS DEMAG AG
    Inventors: Andreas Gramer, Peter De Kock, Rolf Brisberger
  • Patent number: 7011714
    Abstract: The invention relates to a method and a device for treating surfaces of metallic strip material (1), especially for pickling rolled material, in a treatment channel (2), with a pickling medium (3) containing acid. Jets (4) are set in the direction in which the strip is transported (5) at the entrance to the channel (2a) and in the opposite direction that in which the strip is transported at the exit of the channel (2b). 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 (2b) of the channel. To this end, additional jets (4) between the channel entrance (2a) and the channel exit (2b) are oriented in the opposite direction to the direction in which the strip is transported (5) and the pickling medium (3) is further delayed in flowing out at the channel exit (2b) by mechanical resistance devices (7) situated in the path of the transport channel (6).
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: March 14, 2006
    Assignee: SMS Demag AG
    Inventors: Peter Schüler, Rolf Bünten, Holger Behrens, Bodo Block, Michael Haentjes, Andreas Gramer
  • Patent number: 6925845
    Abstract: The invention relates to a method for tension levelling a cold-rolled strip, whereby the strip passes through a series of break rolls and a series of traction rolls and in the course of its extension is subjected to traction between the two series of rolls. The strip is bent under traction in a series of high-traction rolls, located between the brake roll and the traction roll series, in order to increase the degree of levelling. To achieve this, the series of high-traction rolls between the brake and the traction rolls has at least two traction rolls for generating the strip traction and bending operation.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: August 9, 2005
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Holger Behrens, Hans Georg Hartung, Ralf Ulrich, Bernd Kreft, Stefan Melster, Bodo Falkenhahn, Andreas Gramer