Patents by Inventor Marc Blumenau
Marc Blumenau 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).
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Cold-rolled and recrystallization annealed flat steel product, and method for the production thereof
Patent number: 10683560Abstract: A cold-rolled and recrystallization-annealed flat steel product may include a ferritic microstructure, which possesses optimized formability and suitability for a wide variety of applications, including painting, for example. The flat steel product may include a steel comprising (in percent by weight): C: 0.0001%-0.003%, Si: 0.001%-0.025%, Mn: 0.05%-0.20%, P: 0.001%-0.015%, Al: 0.02%-0.055%, Ti: 0.01%-0.1%. The steel may further include at least one of Cr: 0.001%-0.05%, V: up to 0.005%, Mo: up to 0.015%, or N: 0.001%-0.004%, which may have the following mechanical properties: Rp0.2<180 MPa, Rm<340 MPa, A80<40%, and n value <0.23. At least one surface may have an arithmetic mean roughness Ra of 0.8-1.6 ?m and a peak count RPc of 75/cm. The present disclosure also concerns methods for producing flat steel products.Type: GrantFiled: September 9, 2015Date of Patent: June 16, 2020Assignees: ThyssenKrupp Steel Europe AG, ThyssenKrupp AGInventors: Marc Blumenau, Jörg Steinebrunner, Udo Zocher -
Patent number: 10287440Abstract: A steel product may include a metallic anticorrosion coating of an aluminum alloy. So that such a steel product possesses high media resistance, more particularly high acid resistance and corrosion resistance, the steel product may be immersed in a liquid-melt coating bath that includes an aluminum alloy. In addition to Aluminum and unavoidable impurities, the aluminum alloy may include at least one of 0.2-2% by weight Mn or 0.2-7% by weight Mg, 0.5-5% by weight Fe, and at least one of 0.05-0.4% by weight Ti or 0.05-0.4% by weight Zr. A method for producing such steel products may involve providing a steel product in a hot-rolled or cold-rolled state, activating a surface of the steel product to remove passive oxides, and coating the surface-activated steel product by immersion in a liquid-melt coating bath that comprises an aluminum alloy having the aforementioned composition.Type: GrantFiled: June 30, 2015Date of Patent: May 14, 2019Assignees: THYSSENKRUPP STEEL EUROPE AG, THYSSENKRUPP AGInventors: Marc Blumenau, Oliver Moll, Michael Peters, Thiemo Wuttke
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Patent number: 10011897Abstract: The invention relates to a device and a method for hot-dip coating a metal strip with a metal covering, wherein the metal strip is directed continuously through a melt bath, wherein the thickness of the metal covering present on the metal strip when it leaves the melt bath is adjusted by means of a scraping device, and wherein slag which is present on the melt bath is driven away from the metal strip leaving the melt bath by means of a gas flow. To prevent slag from coming into contact with the metal strip leaving the melt bath, the invention drives away the slag from the metal strip by means of at least one nozzle which is arranged in close proximity to the metal strip, that a gas flow which extends over the width of the metal strip is directed onto the surface of the melt bath.Type: GrantFiled: October 11, 2012Date of Patent: July 3, 2018Assignee: ThyssenKrupp Steel Europe AGInventors: Christopher Gusek, Joerg Schulte, Marc Blumenau, Fred Jindra, Dirk Czupryna, Rudolf Schoenenberg
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Patent number: 9803270Abstract: A method which allows process-stable hot-dip coating of Ni-alloy steel flat products in a cost- and resource-effective manner, including the following steps: a) provision of a steel flat product obtained by cold- or hot-rolling; b) within 1-30 s, heating the steel flat product to a holding temperature between 700 and 1100° C., under a heating atmosphere of N2; c) holding the steel flat product at the holding temperature for a holding duration of 10-120 s under a holding atmosphere of N2; d) cooling the steel flat product from the holding temperature to a strip inlet temperature of 430-800° C.; and e) passing the steel flat product through an inlet zone, in which an inert or reducing inlet atmosphere predominates, and passing the steel flat product through a melt bath, wherein TP1>TP2>TP4.Type: GrantFiled: December 13, 2012Date of Patent: October 31, 2017Assignees: ThyssenKrupp Steel Europe AG, Outokumpu Nirosta GmbHInventors: Marc Blumenau, Christopher Gusek, Fred Jindra, Rudolf Schoenenberg, Hans-Joachim Krautschick
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COLD-ROLLED AND RECRYSTALLISATION ANNEALED FLAT STEEL PRODUCT, AND MEHTOD FOR THE PRODUCTION THEREOF
Publication number: 20170306430Abstract: A cold-rolled and recrystallization-annealed flat steel product may include a ferritic microstructure, which possesses optimized formability and suitability for a wide variety of applications, including painting, for example. The flat steel product may include a steel comprising (in percent by weight): C: 0.0001%-0.003%, Si: 0.001%-0.025%, Mn: 0.05%-0.20%, P: 0.001%-0.015%, Al: 0.02%-0.055%, Ti: 0.01%-0.1%. The steel may further include at least one of Cr: 0.001%-0.05%, V: up to 0.005%, Mo: up to 0.015%, or N: 0.001%-0.004%, which may have the following mechanical properties: Rp0.2?180 MPa, Rm?340 MPa, A80?40%, and n value ?0.23. At least one surface may have an arithmetic mean roughness Ra of 0.8-1.6 ?m and a peak count RPc of 75/cm. The present disclosure also concerns methods for producing flat steel products.Type: ApplicationFiled: September 9, 2015Publication date: October 26, 2017Applicants: ThyssenKrupp Steel Europe AG, ThyssenKrupp AGInventors: Marc BLUMENAU, Jörg STEINEBRUNNER, Udo ZOCHER -
Publication number: 20170240991Abstract: The invention relates to a flat steel product, which is intended to be formed into a component by hot press forming and has a base made of steel, onto which a metal anti-corrosion coating is applied, which is formed by Zn or a Zn alloy. This is achieved as per the invention in that a separate finishing coat is applied to at least one of the free surfaces of the flat steel product which contains at least one base metal compound (oxide, nitride, sulphide, sulphate, carbide, carbonate, fluoride, hydrate, hydroxide, or phosphate). Furthermore the invention relates to a method enabling the production of a flat steel product of this kind.Type: ApplicationFiled: May 10, 2017Publication date: August 24, 2017Inventors: Janko Banik, Marc Blumenau, Maria Koeyer, Tobias Lewe, Axel Schrooten
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Patent number: 9737921Abstract: The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller (3, 38) which has two roller pins (23, 39) and is mounted to supporting arms (1, 2, 34, 37, 54, 57) by means of ceramic journal bearings (20, 31), wherein the journal bearings (20, 31) are in each case arranged in a bearing receptacle (45, 55) of the associated supporting arm (1, 2, 34, 37, 54, 57). The invention is characterized in that at least one of the journal bearings (20, 31) in its associated supporting arm (1, 2, 34, 37, 54, 57) is fixed in the bearing receptacle (45, 55) by means of a force-fit that engages on the outer edge of the journal bearing (20, 31) and balances the different heat expansion coefficients of the journal bearings (20, 31) and the bearing receptacle (45, 55).Type: GrantFiled: April 11, 2013Date of Patent: August 22, 2017Assignee: Thyssenkrupp Steel Europe AGInventors: Marc Blumenau, Frank Eisner, Christopher Gusek, Fred Jindra, Rudolf Schoenenberg, Bert-Reiner Willeke, Tobias Denner, Christian Klatt, Jens Wemhoener
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Publication number: 20170198152Abstract: A steel product may include a metallic anticorrosion coating of an aluminum alloy. So that such a steel product possesses high media resistance, more particularly high acid resistance and corrosion resistance, the steel product may be immersed in a liquid-melt coating bath that includes an aluminum alloy. In addition to Aluminum and unavoidable impurities, the aluminum alloy may include at least one of 0.2-2% by weight Mn or 0.2-7% by weight Mg, 0.5-5% by weight Fe, and at least one of 0.05-0.4% by weight Ti or 0.05-0.4% by weight Zr. A method for producing such steel products may involve providing a steel product in a hot-rolled or cold-rolled state, activating a surface of the steel product to remove passive oxides, and coating the surface-activated steel product by immersion in a liquid-melt coating bath that comprises an aluminum alloy having the aforementioned composition.Type: ApplicationFiled: June 30, 2015Publication date: July 13, 2017Applicants: ThyssenKrupp Steel Europe AG, ThyssenKrupp AGInventors: Marc Blumenau, Oliver Moll, Michael Peters, Thiemo Wuttke
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Patent number: 9683598Abstract: The invention relates to the field of materials science and to a device for reducing pressure in cavities in media at higher temperatures, such as those devices which can be used for devices for hot-dip coating metal materials in the metal processing industry for example. The aim of the invention is to provide a device by means of which pressure can be reduced in the cavity of the hollow bodies in a reliable and controlled manner and simultaneously the penetration of the media can be delayed or completely prevented at the higher temperatures. This is achieved by a device for reducing pressure in hollow bodies in media at higher temperatures, wherein at least one opening to the cavity of the hollow body is provided in hollow body regions which are not used for the intended application, said opening being closed from the medium surrounding the hollow body by at least one component made of a gas-permeable metal or ceramic material.Type: GrantFiled: June 29, 2012Date of Patent: June 20, 2017Assignees: THYSSENKRUPP STEEL EUROPE AG, FRAUNHOFER-GESELLSCHAFT ZUR FOEDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Christopher Gusek, Frank Eisner, Joachim Huelstrung, Fred Jindra, Bert-Heiner Willeke, Marc Blumenau, Markus Kovac, Gerd Jendrischik, Alfred Peitz, Rudolf Schoenenberg, Joerg Adler, Heike Heymer
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Publication number: 20170136511Abstract: Devices and methods for cleaning a roller of a system for processing strip-type material may involve a suction duct in addition to a nozzle that directs a gas flow onto a surface of the roller. The nozzle and the suction duct may be disposed in a hood that covers part of a circumference of the roller. Further, the nozzle can be disposed at an angle within a range of ±45 degrees with respect to a normal line extending orthogonally from the surface of the roller. Moreover, the nozzle may be spaced less than 50 mm apart from the surface of the roller.Type: ApplicationFiled: March 23, 2015Publication date: May 18, 2017Applicants: ThyssenKrupp Steel Europe AG, ThyssenKrupp AGInventors: Marc Blumenau, Sahin Cengiz, Erhard Klemm, Oliver Moll, Roger Nüssen, Christian Schmidt, Michael Ullmann, Udo Zocher
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Patent number: 9611527Abstract: A method by which a flat steel product containing 2-35 wt. % of Mn can be provided with a coating of Zn which adheres well by annealing at an annealing temperature Ta of 600-1100° C. for an annealing time of 10-240 s under an annealing atmosphere which has a reducing effect on the FeO present on the flat steel product and an oxidizing effect on the Mn contained in the steel substrate thereby forming a layer of Mn mixed oxide which covers the flat steel product at least in sections and then cooling the flat steel product to a temperature for bath entry and conveying it through a bath of molten Zn saturated within iron at a temperature of 420-520° C., within a dip time of 0.1-10 s.Type: GrantFiled: April 22, 2010Date of Patent: April 4, 2017Assignee: ThyssenKrupp Steel Europe AGInventors: Manfred Meurer, Martin Norden, Wilhelm Warnecke, Marc Blumenau, Matthias Dahlem, Jennifer Schulz, Klaus Josef Peters
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Patent number: 9562278Abstract: The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller (3, 38) mounted on supporting arms (1, 2, 34, 37, 54, 57) and a carrier device holding the supporting arms (1, 2, 34, 37, 54, 57). The device is characterized in that one of the supporting arms (1, 2, 34, 37, 54, 57) is mounted on the carrier device by means of a floating bearing (5), wherein the floating bearing (5) allows the mounted supporting arm on the carrier device to move parallel to the longitudinal direction of the deflection roller (3, 38), and in that an elastic counter element (12), which acts parallel to the longitudinal direction of the deflection roller (3, 38) upon the supporting arm (1, 2, 34, 37, 54, 57) mounted on the floating bearing (5), is present and counteracts an increasing distance between the supporting arms (1, 2, 34, 37, 54, 57).Type: GrantFiled: April 11, 2013Date of Patent: February 7, 2017Assignee: Thyssenkrupp Steel Europe AGInventors: Marc Blumenau, Frank Eisner, Christopher Gusek, Fred Jindra, Rudolf Schoenenberg, Bert-Reiner Willeke, Tobias Denner, Christian Klatt, Jens Wemhoener
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Patent number: 9551046Abstract: An apparatus and a method for the treatment of a flat steel product, taking place in throughput. The apparatus includes an indirectly heated annealing furnace chamber, a conveyor device for continuously conveying the flat steel product over a conveyor path leading from an entry to an exit of the annealing furnace chamber, and nozzle arrangements for feeding atmosphere gas, which is reactive in relation to the flat steel product, into the annealing furnace chamber. A controlled treatment of the flat steel product includes a first nozzle arrangement, from which a gas jet induces a first gas flow towards the entry of the annealing furnace chamber and sweeping over the surface of flat steel product to be treated. A second nozzle arrangement includes a gas jet which induces a second gas flow directed towards the exit of the annealing furnace chamber and sweeping over the surface of flat steel product.Type: GrantFiled: March 30, 2012Date of Patent: January 24, 2017Assignee: ThyssenKrupp Steel Europe AGInventors: Marc Blumenau, Karsten Machalitza, Michael Peters, Rudolf Schoenenberg, Sabine Zeizinger, Martin Norden
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Patent number: 9279175Abstract: A method for hot dip coating a flat stainless steel product with more than 5 wt. % Cr with a protective metallic coating by: heating the flat steel product under an oxygen-free heating atmosphere to 100° C.-600° C. within 1-30 seconds; continuing heating to a holding temperature of 750° C.-950° C., by heating to 550° C.-800° C. under an inert or reducing atmosphere, holding within this temperature window for 1 to 15 seconds under an oxidizing atmosphere, and continuing heating under an inert or reducing atmosphere, until the holding temperature is reached; holding at the holding temperature for 10-120 seconds under a reducing atmosphere; and passing the flat steel product through a nozzle area under an inert or reducing atmosphere at 430°-780° C. and into a molten bath in which the flat steel product is coated with the metallic coating.Type: GrantFiled: August 18, 2011Date of Patent: March 8, 2016Assignee: ThyssenKrupp Steel Europe AGInventors: Marc Blumenau, Hans-Joachim Heiler, Fred Jindra, Rudolf Schoenenberg, Hans-Joachim Krautschick
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Patent number: 9234253Abstract: A readily formable flat steel product has a ductile edge layer that is from 10 to 200 ?m thick and has a ductility greater than a ductility of an inner core layer of the flat steel product. The readily formable flat steel product is produced by annealing a flat steel product having a C content of from 0.1 to 0.4% by weight in a continuous furnace. The annealing is carried out under an annealing atmosphere that contains from 0.1 to 25% by vol. of H2 and H2O, with the balance being N2 and technically unavoidable impurities. A dew point is between ?20° C. and +60° C., and a ratio of H2O/H2 is a maximum of 0.957. In the course of the annealing, the flat steel product is heated to a holding temperature of from 600 to 1100° C. and for a holding time of from 10 to 360 seconds.Type: GrantFiled: December 3, 2010Date of Patent: January 12, 2016Assignee: ThyssenKrupp Steel Europe AGInventors: Wilhelm Warnecke, Manfred Meurer, Jens Kondratiuk, Marc Blumenau, Martin Norden, Thiemo Wuttke
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Publication number: 20150345002Abstract: The invention specifies a method which allows process-stable hot-dip coating of Ni-alloy steel flat products in a cost- and resource-effective manner, comprising the following steps: a) provision of a steel flat product obtained by cold- or hot-rolling, b) within 1-30 s, heating the steel flat product to a holding temperature between 700 and 1100° C., under a heating atmosphere of N2; c) holding the steel flat product at the holding temperature for a holding duration of 10-120 s under a holding atmosphere of N2; d) cooling the steel flat product from the holding temperature to a strip inlet temperature of 430-800° C.; e) passing the steel flat product through an inlet zone, in which an inert or reducing inlet atmosphere predominates, and passing the steel flat product through a melt bath, wherein TP1>TP2>TP4.Type: ApplicationFiled: December 13, 2012Publication date: December 3, 2015Inventors: Marc Blumenau, Christopher Gusek, Fred Jindra, Rudolf Schoenenberg, Hans-Joachim Krautschick
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Patent number: 9096919Abstract: Optimal wetting and adhesion of the hot-dip coating by way of pre-oxidation in a DFF pre-heating furnace and humidification of the annealing atmosphere in a holding zone is achieved in a hot dip galvanised flat steel product.Type: GrantFiled: July 5, 2012Date of Patent: August 4, 2015Assignee: ThyssenKrupp Steel Europe AGInventors: Marc Blumenau, Oliver Brehm, Michael Peters, Rudolf Schoenenberg, Andreas Westerfeld, Martin Norden
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Publication number: 20150140225Abstract: The invention relates to a device and a method for hot-dip coating a metal strip with a metal covering, wherein the metal strip is directed continuously through a melt bath, wherein the thickness of the metal covering present on the metal strip when it leaves the melt bath is adjusted by means of a scraping device, and wherein slag which is present on the melt bath is driven away from the metal strip leaving the melt bath by means of a gas flow. To prevent slag from coming into contact with the metal strip leaving the melt bath, the invention drives away the slag from the metal strip by means of at least one nozzle which is arranged in close proximity to the metal strip, that a gas flow which extends over the width of the metal strip is directed onto the surface of the melt bath.Type: ApplicationFiled: October 11, 2012Publication date: May 21, 2015Inventors: Christopher Gusek, Joerg Schulte, Marc Blumenau, Fred Jindra, Dirk Czupryna, Rudolf Schoenenberg
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Publication number: 20150068454Abstract: The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller (3, 38) mounted on supporting arms (1, 2, 34, 37, 54, 57) and a carrier device holding the supporting arms (1, 2, 34, 37, 54, 57). The device is characterized in that one of the supporting arms (1, 2, 34, 37, 54, 57) is mounted on the carrier device by means of a floating bearing (5), wherein the floating bearing (5) allows the mounted supporting arm on the carrier device to move parallel to the longitudinal direction of the deflection roller (3, 38), and in that an elastic counter element (12), which acts parallel to the longitudinal direction of the deflection roller (3, 38) upon the supporting arm (1, 2, 34, 37, 54, 57) mounted on the floating bearing (5), is present and counteracts an increasing distance between the supporting arms (1, 2, 34, 37, 54, 57).Type: ApplicationFiled: April 11, 2013Publication date: March 12, 2015Inventors: Marc Blumenau, Frank Eisner, Christopher Gusek, Fred Jindra, Rudolf Schoenenberg, Bert-Reiner Willeke, Tobias Denner, Christian Klatt, Jens Wemhoener
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Publication number: 20150045195Abstract: The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller (3, 38) which has two roller pins (23, 39) and is mounted to supporting arms (1, 2, 34, 37, 54, 57) by means of ceramic journal bearings (20, 31), wherein the journal bearings (20, 31) are in each case arranged in a bearing receptacle (45, 55) of the associated supporting arm (1, 2, 34, 37, 54, 57). The invention is characterized in that at least one of the journal bearings (20, 31) in its associated supporting arm (1, 2, 34, 37, 54, 57) is fixed in the bearing receptacle (45, 55) by means of a force-fit that engages on the outer edge of the journal bearing (20, 31) and balances the different heat expansion coefficients of the journal bearings (20, 31) and the bearing receptacle (45, 55).Type: ApplicationFiled: April 11, 2013Publication date: February 12, 2015Inventors: Marc Blumenau, Frank Eisner, Christopher Gusek, Fred Jindra, Rudolf Schoenenberg, Bert-Reiner Willeke, Tobias Denner, Christian Klatt, Jens Wemhoener