Patents by Inventor Fritz-Peter Pleschiutschnigg

Fritz-Peter Pleschiutschnigg 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: 8021599
    Abstract: A method for producing steel products (1) with optimum surface quality wherein the molten steel (1b) is produced in a process route (10, 100; 12; 13) that is selected according to a desired final microstructure (9), by melting in a furnace (2b) with an electrode system (31), and in a vacuum degassing system; or by melting in a furnace installation (35) or an individual furnace vessel (30), in a ladle furnace (25), and in a differential-pressure vacuum degassing system (43); or by melting in a furnace (2b) with additions of alloying materials (26), a partial-quantity degassing in the ladle furnace (25), or a vacuum degassing system (27) and a ladle degassing (27).
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: September 20, 2011
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Fritz-Peter Pleschiutschnigg, Karl-Ernst Hensger, Dieter Rosenthal, Rainer Teworte, Dieter Tembergen
  • Patent number: 7998237
    Abstract: Disclosed are a method and an installation for producing steel products (1) having an optimum surface quality, especially extremely low carbon contents (UCL steel or IF steel), nitrogen contents, total oxygen contents, high-strength or stainless steel qualities.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: August 16, 2011
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Fritz-Peter Pleschiutschnigg, Karl-Ernst Hensger, Dieter Rosenthal, Rainer Teworte, Dieter Tembergen
  • Publication number: 20100000062
    Abstract: A method for producing steel products (1) with optimum surface quality wherein the molten steel (1b) is produced in a process route (10, 100; 12; 13) that is selected according to a desired final microstructure (9), by melting in a furnace (2b) with an electrode system (31), and in a vacuum degassing system; or by melting in a furnace installation (35) or an individual furnace vessel (30), in a ladle furnace (25), and in a differential-pressure vacuum degassing system (43); or by melting in a furnace (2b) with additions of alloying materials (26), a partial-quantity degassing in the ladle furnace (25), or a vacuum degassing system (27) and a ladle degassing (27).
    Type: Application
    Filed: February 13, 2009
    Publication date: January 7, 2010
    Inventors: Fritz-Peter Pleschiutschnigg, Karl-Ernst Hensger, Dieter Rosenthal, Rainer Teworte, Dieter Tembergen
  • Publication number: 20070272054
    Abstract: Disclosed are a method and an installation for producing steel products (1) having an optimum surface quality, especially extremely low carbon contents (UCL steel or IF steel), nitrogen contents, total oxygen contents, high-strength or stainless steel qualities.
    Type: Application
    Filed: May 25, 2004
    Publication date: November 29, 2007
    Inventors: Fritz-Peter Pleschiutschnigg, Karl-Ernst Hensger, Dieter Rosenthal, Rainer Teworte, Dieter Tembergen
  • Publication number: 20050098297
    Abstract: A cooled continuous casting mold for casting metal, in particular steel, in slab format and having, in particular, a thickness between 40 and 400 mm and a width from 200 mm to 3,500 mm, with mold walls formed of plates in which cooling medium channels for cooling are formed, is so improved that the thermal loading over the mold profile is uniform and, therefore, the hot face temperature of the liquid metal level may be reduced, and to this end, a width (26.1) of the cooling medium channels (29) is reduced, in a casting direction dependent on a thermal flow profile (2.1), over a mold height (13) from a mold inlet (13.1) to a mold outlet (13.2).
    Type: Application
    Filed: August 21, 2001
    Publication date: May 12, 2005
    Inventor: Fritz-Peter Pleschiutschnigg
  • Patent number: 6854507
    Abstract: A system provided in a high-speed continuous casting plant for casting a metallic strand for automatically operating the high-speed continuous casting plant. In the system, the stopping or slide movement, the modification of the steel level, the heat currents through the mold walls, the temperature of the liquid metal and the drawing-off speed are measured over the casting time, supplied to a computer and compared with predetermined limit values for an automatic operating mode.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: February 15, 2005
    Assignee: SMS Demag AG
    Inventors: Fritz-Peter Pleschiutschnigg, Stephan Feldhaus, Lothar Parschat, Michael Vonderbank, Thomas Ulke, Robert Victor Kowalewski, Rolf-Peter Heidemann
  • Publication number: 20040256080
    Abstract: The invention relates to a method for optimizing the cooling capacity of a continuous casting mold (1) for liquid metals, particularly for liquid steel, by homogenizing the thermal load (22) above the height of the continuous casting mold (1). According to the method, the cooling medium (5) is guided through a cross-sectional area of a large number of cooling medium channels (3) or cooling medium boreholes (4) running approximately parallel to the cast billet (9). The cooling medium cross-sectional areas between the mold entry (6) and the mold exit (7) are configured differently.
    Type: Application
    Filed: April 15, 2004
    Publication date: December 23, 2004
    Inventors: Werner Rahmfeld, Erwin Wosch, Fritz-Peter Pleschiutschnigg, Stephan Feldhaus, Wolfgang Mossner, Lothar Parschat, Uwe Kopfstedt
  • Publication number: 20040256078
    Abstract: The invention relates to a device for cooling the copper plates (1.1) of a continuous casting ingot mould (1) for liquid metals, especially liquid steel, comprising an ingot mould coolant (2) which is guided in cooling channels.
    Type: Application
    Filed: August 13, 2004
    Publication date: December 23, 2004
    Inventors: Fritz-Peter Pleschiutschnigg, Stephan Feldhaus, Wolfgang Mossner, Werner Rahmfeld, Lothar Parschat
  • Publication number: 20040244941
    Abstract: A system provided in a high-speed continuous casting plant for casting a metallic strand for automatically operating the high-speed continuous casting plant. In the system, the stopping or slide movement, the modification of the steel level, the heat currents through the mold walls, the temperature of the liquid metal and the drawing-off speed are measured over the casting time, supplied to a computer and compared with predetermined limit values for an automatic operating mode.
    Type: Application
    Filed: June 4, 2004
    Publication date: December 9, 2004
    Inventors: Fritz-Peter Pleschiutschnigg, Stephan Feldhaus, Lothar Parschat, Michael Vonderbank, Thomas Ulke, Robert Victor Kowalewski, Rolf-Peter Heidemann
  • Patent number: 6793006
    Abstract: The invention relates to a method for automatically opening a high-speed continuous casting plant According to said method the stopping or slide movement, the modification of the steel level, the heat currents through the mold walls, the temperature of the liquid metal and the drawing-off speed are measured over the casting time, supplied to a computer and compared with predetermined limit values for an automatic operating mode.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: September 21, 2004
    Assignee: SMS Demag AG
    Inventors: Fritz-Peter Pleschiutschnigg, Stephan Feldhaus, Lothar Parschat, Michael Vonderbank, Thomas Ulke, Robert Victor Kowalewski, Rolf-Peter Heidemann
  • Patent number: 6776215
    Abstract: For a further development a device for continuous casting of metal, in particular steel, with a metal mold with mold walls (1,18) and a mold cooling device and which can remove high thermal flows and can be subjected to thermal loads and, thereble, is suitable for use at high speeds, at least one mold wall (1,18) of the mold of this device should include a steel wall (2) and a support mesh (3) for this wall and the device further should be provided with magnetic field generator (3.2) for generating a magnetic field (3.1) acting on the mold steel wall (2) via the support mesh (3) for attracting the mold steel wall (2) to the support mesh (3), with the mold cooling device comprising spray cooling means.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: August 17, 2004
    Assignee: SMS Demag AG
    Inventors: Joachim Schwellenbach, Michael Vonderbank, Fritz-Peter Pleschiutschnigg
  • Publication number: 20040099402
    Abstract: For a further development a device for continuous casting of metal, in particular steel, with a metal mold with mold walls (1,18) and a mold cooling device and which can remove high thermal flows and can be subjected to thermal loads and, thereby, is suitable for use at high speeds, at least one mold wall (1,18) of the mold of this device should include a steel wall (2) and a support mesh (3) for this wall and the device further should be provided with magnetic field generator (3.2) for generating a magnetic field (3.1) acting on the mold steel wall (2) via the support mesh (3) for attracting the mold steel wall (2) to the support mesh (3), with the mold cooling device comprising spray cooling means.
    Type: Application
    Filed: November 20, 2002
    Publication date: May 27, 2004
    Inventors: Joachim Schwellenbach, Michael Vonderbank, Fritz-Peter Pleschiutschniggs
  • Publication number: 20040031583
    Abstract: The invention relates to a method, which is used in the area of secondary metallurgy (4) in its entirety with a final temperature-determining process step (4.1) such as a ladle furnace, for controlling the temperature of steel from the surface of the bath of a continuous casting ingot mold (1) up to the furnace tap (5) of a steel producing process. According to the invention, the temperature of the steel in the surface of the bath is controlled based on the equation TML=TLI+X° C. (X=5-15° C. and while respecting the same such that a jump in temperature (9) between the surface of the bath in the ingot mold (1) and a distributor (3) is detected according to the pouring rate (6) for a predetermined billet size.
    Type: Application
    Filed: April 10, 2003
    Publication date: February 19, 2004
    Inventors: Fritz-Peter Pleschiutschnigg, Lothar Parschat, Eckart Schwencke, Erwin Wosch, Bernt Rollinger, Stephan Feldhaus
  • Publication number: 20030230163
    Abstract: A method of producing products of carbon steel or stainless steel in an electrical arc furnace-converter (8) with two metallurgical vessels (9; 10), wherein during melting, an electrode system (11) pivots above each vessel (9; 10), and during oxidation with oxygen, in each vessel, a top lance (12) and one or more side lances (13) are introduced, and wherein an immediate quality change from carbon melt to stainless melt or vice versa is effected by oxidation with oxygen with top lance (12) and/or by oxidation with oxygen with at least one side lance (13) or in reverse order during tapping periods which depend on operation of an immediately adjoining continuous casting machine (18), makes a time-independent change of the melting sequence possible.
    Type: Application
    Filed: June 18, 2002
    Publication date: December 18, 2003
    Inventors: Fritz-Peter Pleschiutschnigg, Peter Meierling
  • Patent number: 6568461
    Abstract: A process and a continuous casting installation for the production of thin slabs, preferably of steel with a predetermined solidification thickness of, e.g., 50 mm, in which an optimum surface quality and internal quality of the strand with minimal and predetermined solidification thickness and plant capacity, and accordingly minimal rolling effort, is achieved by a qualitative adjustment of casting and rolling in the region of the strand guide, oscillation of the casting mold by a hydraulically operated lifting platform, feeding of casting powder to the mold, and an immersion nozzle with a specific cross sectional area of flow relating to the process and continuous casting installation, resulting in a satisfactory supply of casting slag and bath movement in the cast surface compared with a standard slab with a thickness of 200 mm.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: May 27, 2003
    Assignee: Mannesmann Aktiengesellschaft
    Inventor: Fritz-Peter Pleschiutschnigg
  • Patent number: 6565925
    Abstract: A method for producing coated strands of metal includes guiding a metal strand through the bottom of a vessel filled with a molten mass of the same or different composition as the metal strip, wherein the residence time of the metal strand is selected as a function of at least one of the molten bath level, the casting speed, the metal strand thickness, and the preheating temperature of the metal strand such that the deposited molten mass on the metal strand has a desired thickness of several times the initial thickness of the metal strand. After exiting from the molten bath, the metal strand with a layer crystallized thereon is subjected to a smoothing path carried out when the surface temperature of the strand crystallized thereon is smaller than the solidus temperature of the molten bath, so that at least the surface of the layer crystallized thereon is solidified. The crystallized layer is applied with a thickness which exceeds the desired final thickness of the coated strand.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: May 20, 2003
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventor: Fritz-Peter Pleschiutschnigg
  • Patent number: 6543519
    Abstract: A method of controlling a hot face temperature of a copper plate of a mold for continuous casting of steel with variable casting rates and including: providing a bypass line for connecting a mold water outlet with a mold water inlet for obtaining, at the mold water inlet a mixture of heated mold water and cooled mold water, which mixture is fed into the mold as a cooling water having a chageable temperature depending on casting conditions; providing, at the mold water outlet, a two-way valve connectable with the bypass line and a heat exchanger for cooling the heated mold water for distributing the heated mold water between the bypass line and the heat exchanger with; and control of the operation of the two-way valve in accordance with the exit water temperature to maintain a constant predetermined water temperature at the mold water outlet, whereby a constant hot face temperature is maintained.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: April 8, 2003
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Fritz-Peter Pleschiutschnigg, Stephan Feldhaus, J├╝rgen Friedrich, Uwe Kopfstedt, Lothar Parschat, Werner Rahmfeld, Dieter Stalleicken, Axel Weyer, Erwin Wosch, Michael Vonderbank
  • Patent number: 6539273
    Abstract: A continuous caster is controlled by a method anticipating the liquidus temperature in the mold of the caster to prevent premature solidification. The temperature in the tundish is measured and based upon the tundish temperature and the resistance time of the molten metal in the tundish, an equivalent liquidus temperature window is defined and the speed of the continuous caster is controlled to maintain this window of operation of the tundish.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: March 25, 2003
    Assignee: SMS Schloemann-Siemag AG
    Inventors: Fritz-Peter Pleschiutschnigg, Stephan Feldhaus, Lothar Parschat, Michael Vonderbank, Erwin Wosch
  • Patent number: 6536505
    Abstract: A method and an apparatus for producing slabs in a continuous casting plant preferably equipped with a vertical mold, preferably for thin slab plants for casting preferably steel having, for example, a solidification thickness of 60 mm-120 mm, for example, 80 mm, and casting speeds of up to 10 m/min. and a maximum casting output of about 3 million tons per year. In a first vertically extending first segment 0 of a strand guide, exclusive strand reduction, also called casting and rolling, is carried out. The segment 1 arranged immediately underneath the first segment 0 carries out bending of the strand through several bending points into the inner circular arc. Prior to final solidification, the strand is bent back through several return bending points into the horizontal.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: March 25, 2003
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventor: Fritz-Peter Pleschiutschnigg
  • Patent number: 6520245
    Abstract: A guide element of a continuous casting plant, particularly a continuous casting plant for thin slabs, for guiding a metal strip in a strand guiding direction includes a pair of guide rollers which are located opposite each other relative to the metal strip and form a roller gap. The pair of guide rollers is provided with an adjusting device for adjusting a crown of the roller gap.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: February 18, 2003
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Fritz-Peter Pleschiutschnigg, Joachim Schwellenbach