Patents by Inventor Hans-Joachim Krautschick
Hans-Joachim Krautschick 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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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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Patent number: 9770744Abstract: A method for producing a flat steel product with high reflectivity, in which at least one surface has an arithmetic mean roughness Ra of less than 0.03 ?m includes providing a flat steel product, at least one surface of which has an arithmetic mean roughness Ra of less than 2.5 ?m. The flat steel product is cold rolled in a plurality of rolling passes. Also a flat steel product with high reflectivity in the finished re-rolled state on at least one of its surface has a low arithmetic mean roughness, a high gloss, and a high directed reflection. A solar concentrator is produced from such a flat steel product.Type: GrantFiled: August 27, 2013Date of Patent: September 26, 2017Assignees: ThyssenKrupp Steel Europe AG, Outokumpu Nirosta GmbHInventors: Roman Glass, Utz Karsten, Jörg Kazmierski, Nina Kolbe, Hans-Joachim Krautschick, Klaus Manfred Lange, Stefan Peter Puls, Janine Schauer-Paβ, Bernd Schuhmacher, Dirk Wiemer, Frank Wörster
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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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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: 9188287Abstract: The present invention relates to a product for fluidic applications, with at least one surface segment having a plurality of ribs in contact with a fluid flowing in a flow direction and adjacent ribs delimit between them in each case a valley and a method for production and a use of such a product. The product according to the invention can be produced economically with further improved flow properties; in that at least two ribs with the valley they respectively delimit are combined in a group, that at least two groups are present, and separated from each group arranged adjacent to it, viewed transverse to the flow direction S of the fluid, by a valley, and that the height profile of the valley differs in each case from the height profile of the valleys delimited by those ribs of the groups which are adjacent to the valley separating the groups.Type: GrantFiled: February 2, 2011Date of Patent: November 17, 2015Assignees: ThyssenKrupp Steel Europe AG, ThyssenKrupp Nirosta GmbHInventors: Hans-Joachim Krautschick, Joachim Hulstrung
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Publication number: 20150283590Abstract: A method for producing a flat steel product with high reflectivity, in which at least one surface has an arithmetic mean roughness Ra of less than 0.03 ?m includes providing a flat steel product, at least one surface of which has an arithmetic mean roughness Ra of less than 2.5 ?m. The flat steel product is cold rolled in a plurality of rolling passes. Also a flat steel product with high reflectivity in the finished re-rolled state on at least one of its surface has a low arithmetic mean roughness, a high gloss, and a high directed reflection. A solar concentrator is produced from such a flat steel product.Type: ApplicationFiled: August 27, 2013Publication date: October 8, 2015Inventors: Roman Glass, Utz Karsten, Jörg Kazmierski, Nina Kolbe, Hans-Joachim Krautschick, Klaus Manfred Lange, Stefan Peter Puls, Janine Schauer-Pass, Bernd Schuhmacher, Dirk Wiemer, Frank Wörster
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Publication number: 20140144550Abstract: 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 oxidising 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: ApplicationFiled: August 18, 2011Publication date: May 29, 2014Applicant: THYSSENKRUPP STEEL EUROPE AGInventors: Marc Blumenau, Hans-Joachim Heiler, Fred Jindra, Rudolf Schoenenberg, Hans-Joachim Krautschick
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Patent number: 8608873Abstract: A stainless steel and a flat cold product produced therefrom, which can be easily produced in an economical manner. A steel according to the invention, in the cold-rolled state, has a microstructure with 5-15% by volume ?-ferrite and austenite as the remainder. It contains (in % by weight): C: 0.05-0.14%, Si: 0.1-1.0%, Mn: 4.0-12.0%, Cr: >17.5-22.0%, Ni: 1.0-4.0%, Cu: 1.0-3.0%, N: 0.03-0.2%, P: max. 0.07%, S: max. 0.01%, Mo: max. 0.5%, optionally one or more elements from the group consisting of Ti, Nb, B, V, Al, Ca, As, Sn, Sb, Pb, Bi, and H wherein Ti: max. 0.02%, Nb: max. 0.1%, B: max. 0.004%, V: max. 0.1%, Al: 0.001-0.03%, Ca: 0.0005-0.003%, As: 0.003-0.015%, Sn: 0.003-0.01%, Pb: max. 0.01%, Bi: max. 0.01%, H: max. 0.0025%, and remainder Fe and unavoidable impurities.Type: GrantFiled: September 3, 2009Date of Patent: December 17, 2013Assignee: Outokumpu Nirosta GmbHInventors: Cornel Abratis, Lutz Ernenputsch, Wilfried Klos, Hans-Joachim Krautschick, Michael Sachtleber
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Publication number: 20130125992Abstract: The present invention relates to a product for fluidic applications, with at least one surface segment having a plurality of ribs in contact with a fluid flowing in a flow direction and adjacent ribs delimit between them in each case a valley and a method for production and a use of such a product. The product according to the invention can be produced economically with further improved flow properties; in that at least two ribs with the valley they respectively delimit are combined in a group, that at least two groups are present, and separated from each group arranged adjacent to it, viewed transverse to the flow direction S of the fluid, by a valley, and that the height profile of the valley differs in each case from the height profile of the valleys delimited by those ribs of the groups which are adjacent to the valley separating the groups.Type: ApplicationFiled: February 2, 2011Publication date: May 23, 2013Applicants: THYSSENKRUPP NIROSTA GMBH, THYSSENKRUPP STEEL EUROPE AGInventors: Hans-Joachim Krautschick, Joachim Hulstrung
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Publication number: 20110293464Abstract: A stainless steel and a flat cold product produced therefrom, which can be easily produced in an economical manner. A steel according to the invention, in the cold-rolled state, has a microstructure with 5-15% by volume ?-ferrite and austenite as the remainder. It contains (in % by weight): C: 0.05-0.14%, Si: 0.1-1.0%, Mn: 4.0-12.0%, Cr: >17.5-22.0%, Ni: 1.0-4.0%, Cu: 1.0-3.0%, N: 0.03-0.2%, P: max. 0.07%, S: max. 0.01%, Mo: max. 0.5%, optionally one or more elements from the group consisting of Ti, Nb, B, V, Al, Ca, As, Sn, Sb, Pb, Bi, and H wherein Ti: max. 0.02%, Nb: max. 0.1%, B: max. 0.004%, V: max. 0.1%, Al: 0.001-0.03%, Ca: 0.0005-0.003%, As: 0.003-0.015%, Sn: 0.003-0.01%, Pb: max. 0.01%, Bi: max. 0.01%, H: max. 0.0025%, and remainder Fe and unavoidable impurities.Type: ApplicationFiled: September 3, 2009Publication date: December 1, 2011Applicant: THYSSENKRUPP NIROSTA GMBHInventors: Cornel Abratis, Lutz Ernenputsch, Wilfried Klos, Hans-Joachim Krautschick, Michael Sachtleber
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Publication number: 20040025979Abstract: The method according to the invention can be used for the economic manufacture of a steel strip (W) or sheet consisting mainly of Mn-austenite which possesses enhanced strength compared with the prior art. For this purpose a steel is melted which contains at least the following alloying components (in wt. %), 15.00-24.00% Cr, 5.00-12.00% Mn, 0.10-0.60% N, 0.01-0.2% C, max. 3.00% Al and/or Si, max. 0.07% P, max. 0.05% S, max. 0.5% Nb, max. 0.5% V, max. 3.0% Ni, max. 5.0% Mo, max. 2.0% Cu as well as iron and unavoidable impurities as the remainder. This steel is cast into a thin strip (D) having a maximum thickness of 10 mm in a casting gap formed between two rotating rollers (2, 3) or rolls. The rollers (2, 3) or rolls are cooled so intensively that the thin strip (D) in the casting gap (4) is cooled at a cooling rate of at least 200 K/s.Type: ApplicationFiled: September 16, 2003Publication date: February 12, 2004Inventors: Gabriele Bruckner, Wolfgang Schlump, Hans-Joachim Krautschick