Patents by Inventor Joachim Ohlert

Joachim Ohlert 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: 9358598
    Abstract: A method for drying a strip (3) or sheet metal that runs through a rolling mill is characterized in that the strip (3) 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 (1) or, in case of sheet metal, after passing through at least one roll stand (2), and in that the coolant, in particular the cooling liquid, and subsequently the moisture remaining on the strip (3) or the sheet metal is removed from the strip (3) or sheet metal by means of a drying apparatus (10).
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: June 7, 2016
    Assignee: SMS GROUP GMBH
    Inventors: Jürgen Seidel, Peter Sudau, Joachim Ohlert, Ralf Wachsmann, Uwe Baumgärtel
  • Publication number: 20120160377
    Abstract: The invention relates to a method of making microalloyed steel, in particular a pipe steel, wherein a cast slab (1) passes through an installation (2) having a casting machine (3), a first furnace (4), at least one roughing roll stand (5), a second furnace (6), at least one finishing roll stand (7), and a cooling line (8) in this order in the travel direction (F) of the slab (1).
    Type: Application
    Filed: August 5, 2010
    Publication date: June 28, 2012
    Inventors: Juergen Seidel, Joachim Ohlert
  • Patent number: 8137485
    Abstract: The invention relates to a method for producing strips (1) of steel, preferably of silicon steel, in particular of grain-oriented silicon steel or of multiphase steel in which a slab (3) is initially cast in a casting machine (2), wherein this is then rolled in at least one roll train (4, 5) to form strip (1) and wherein before and/or after the at least one roll train (4, 5), the slab is heated in at least one furnace (6, 7).
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: March 20, 2012
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Juergen Seidel, Joachim Ohlert
  • Publication number: 20110162424
    Abstract: A method for drying a strip (3) or sheet metal that runs through a rolling mill is characterized in that the strip (3) 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 (1) or, in case of sheet metal, after passing through at least one roll stand (2), and in that the coolant, in particular the cooling liquid, and subsequently the moisture remaining on the strip (3) or the sheet metal is removed from the strip (3) or sheet metal by means of a drying apparatus (10).
    Type: Application
    Filed: August 5, 2009
    Publication date: July 7, 2011
    Applicant: SMS SIEMAG AKTIENGESELLSCHAFT
    Inventors: Jürgen Seidel, Peter Sudau, Joachim Ohlert, Ralf Wachsmann, Uwe Baumgärtel
  • Publication number: 20100175452
    Abstract: The invention relates to a process for hot rolling and for heat treatment of a strip (1) of steel. To make it possible to produce high-strength and very high-strength strips having satisfactory toughnesses more economically in a continuous production plant, the process provides the steps: a) heating of the slab to be rolled; b) rolling of the slab to the desired strip thickness; c) cooling of the strip (1), with the strip (1) having a temperature above ambient temperature (T0) after cooling; d) rolling up of the strip (1) to produce a coil (2); e) rolling off of the strip (1) from the coil (2); f) heating of the strip (1); g) cooling of the strip (1) and h) transport of the strip (1) to a further destination, with the strip (1) having a temperature above ambient temperature (T0) before heating as per step T).
    Type: Application
    Filed: June 4, 2008
    Publication date: July 15, 2010
    Inventors: Joachim Ohlert, Ingo Schuster, Peter Sudau, Juergen Seidel
  • Publication number: 20100116380
    Abstract: The invention relates to a method for producing strips (1) of steel, preferably of silicon steel, in particular of grain-oriented silicon steel or of multiphase steel in which a slab (3) is initially cast in a casting machine (2), wherein this is then rolled in at least one roll train (4, 5) to form strip (1) and wherein before and/or after the at least one roll train (4, 5), the slab is heated in at least one furnace (6, 7).
    Type: Application
    Filed: July 21, 2008
    Publication date: May 13, 2010
    Inventors: Juergen Seidel, Joachim Ohlert
  • Publication number: 20090214377
    Abstract: For the production of hot strip referred to as TRIP steel (transformation induced plasticity), with a multiphase structure and with outstandingly good deformation properties along with high strengths, from the hot-rolled state, the invention proposes a method which is carried out with a predetermined chemical composition of the steel grade used within the limits 0.12-0.25% C; 0.05-1.8% Si; 1.0-2.0% Mn; the remainder Fe and customary accompanying elements and with a combined rolling and cooling strategy in such a way that a structure comprising 40-70% ferrite, 15-45% bainite and 5-20% residual austenite is obtained, wherein the finish rolling of the hot strip (7) is performed to set a very fine austenite grain (d<8 ?m) in the final forming operation (6?) at temperatures between 770 and 830° C.
    Type: Application
    Filed: October 10, 2006
    Publication date: August 27, 2009
    Inventors: Wolfgang Hennig, August Sprock, Joachim Ohlert, Christian Bilgen