Patents Assigned to voestalpine STAHL GmbH
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Patent number: 9822436Abstract: The invention relates to a method for the production and removal of a temporary protective layer for a cathodic coating, particularly for the production of a hardened steel component with an easily paintable surface, wherein a steel sheet made of a hardenable steel alloy is subjected to a preoxidation, wherein said preoxidation forms a FeO layer with a thickness of 100 nm to 1,000 nm and subsequently a melt dip coating is conducted, wherein, during the melt dip coating, a zinc layer is applied having a thickness of 5 to 20 ?m, preferably 7 to 14 ?m, on each side, wherein the melt dip process and the aluminum content of the zinc bath is adjusted such that, during the melt dip coating, an aluminum content for the barrier layer results of 0.15 g/m2 to 0.Type: GrantFiled: January 30, 2008Date of Patent: November 21, 2017Assignee: voestalpine Stahl GmbHInventors: Martin Peruzzi, Josef Faderl, Siegfried Kolnberger, Werner Brandstatter
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Publication number: 20170306429Abstract: The en-bloc heat treatment of a manganese steel product whose alloy has a carbon fraction (C) in the following range 0.02?C?0.35% by weight, and a manganese content (Mn) in the following range of 3.5% by weight?Mn?6% by weight. The en-bloc annealing method has the following substeps: heating (E1) the steel product to a first holding temperature (T1) which is in the range of 820° C.±20° C., first holding (H1) of the steel product during a first holding period (?1) at the first holding temperature (T1), faster first cooling (A1) of the steel product to a second holding temperature (T2) which is in the range between 350° C. and 450° C., second holding (H2) of the steel product during a second holding period (?2) in the range of the second holding temperature (T2), performing a slower second cooling (A2).Type: ApplicationFiled: November 30, 2015Publication date: October 26, 2017Applicant: VOESTALPINE STAHL GMBHInventors: Philipp KURNSTEINER, Samek LUDOVIC, Friedrich FUREDER-KITZMULLER, Enno ARRENHOLZ
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Publication number: 20170269050Abstract: A lance and a method determine reaction data of the course of a reaction, in which a reaction gas is top-blown by at least one lance onto a metallic melt in a metallurgical vessel and measured data are determined in this way, reaction data for the course of the reaction are determined as a function of these, where the lance for determining measured data blows out a gas which is conveyed separately from the reaction gas through at least one outlet opening of at least one measuring conduit. The lance for determining measured data blows out the gas which is conveyed separately from the reaction gas laterally through at least one outlet opening of at least one measuring conduit and the internal pressure of at least one gas bubble of this gas formed at this outlet opening of the respective measuring conduit is measured.Type: ApplicationFiled: June 5, 2017Publication date: September 21, 2017Applicant: VOESTALPINE STAHL GMBHInventors: Stefan SCHUSTER, Gunter LENGAUER, Harald PANHOFER
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Patent number: 9677146Abstract: A hot-rolled austenitic manganese steel strip having a chemical composition in percent by weight of 0.4%?C?1.2%, 12.0%?Mn?25.0%, P?0.01% and Al?0.05% has a product of elongation at break in % and tensile strength in MPa of above 65,000 MPa %, in particular above 70,000 MPa %. A cold-rolled austenitic manganese steel strip having the same chemical composition achieves a product of elongation at break in % and tensile strength in MPa of above 75,000 MPa %, in particular above 80,000 MPa %.Type: GrantFiled: May 11, 2011Date of Patent: June 13, 2017Assignee: VOESTALPINE STAHL GMBHInventors: Reinhold Schneider, Ludovic Samek, Enno Arenholz, Klemens Mraczek, Mario Hartl
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Patent number: 9669611Abstract: The invention relates to a method for connecting sheet metal parts (4) to form a laminated core (11), wherein sheet metal parts (4) are separated, in particular punched, from a sheet metal strip (2) that has, at least in some areas, a layer having curable polymer adhesive (12), and the sheet metal parts (4) are preliminarily connected to form a laminated core (11), the preliminary connection comprising plasticizing the adhesive (12) at least in some areas and joining the sheet metal parts (4) in order to connect the sheet metal parts by means of the plasticized adhesive (12) of at least one of the sheet metal parts (4), and in a subsequent step the laminated core (11) having preliminarily connected sheet metal parts (4) is subjected to a curing of the adhesive (12). In order to create an advantageous connection between the sheet metal parts, the plasticizing of the adhesive (12) comprises the introduction of a softener (16), in particular H2O.Type: GrantFiled: November 4, 2011Date of Patent: June 6, 2017Assignee: Voestalpine Stahl GmbHInventors: Martin Peruzzi, Ronald Fluch, Reinhold Stotz, Bernhard Strauss, Franz Dorninger
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Patent number: 9627116Abstract: A method for producing a higher-strength, non-grain-oriented electrical strip, according to which a slab is cast from a molten mass, the slab is hot-rolled and then cold-rolled—optionally a hot-strip annealing can be carried out between the hot-rolling and the cold-rolling—and the cold strip is annealed in order to produce a partially recrystallized structure so that the mechanical strength values ReH can be set within the range of 450 MPa to 850 MPa at an annealing temperature of between 600° C. and 800° C. for 60 s to 300 s.Type: GrantFiled: September 17, 2012Date of Patent: April 18, 2017Assignee: voestalpine Stahl GmbHInventors: Franz Dorninger, Roman Sonnleitner, Herbert Kreuzer
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Patent number: 9605335Abstract: Disclosed is a hot-dip galvanized steel sheet for stamping, which has excellent cold workability, has such satisfactory surface quality as to be free from unplating and other defects even in the absence of dedicated facilities, and ensures a strength of 1370 MPa or more after quenching even when cooled at a low rate. Also disclosed is a method effective for the produce of the hot-dip galvanized steel sheet for stamping. The hot-dip galvanized steel sheet for stamping comprises a base steel sheet and a hot-dip galvanized layer on a surface of the base steel sheet, in which the base steel sheet has a predetermined chemical composition and has a microstructure comprising equiaxed ferrite having an average aspect ratio of 4.0 or less and cementite and/or pearlite having an average major axis of grains of 20 ?m or less.Type: GrantFiled: March 28, 2013Date of Patent: March 28, 2017Assignees: Kobe Steel, Ltd., VOESTALPINE STAHL GmbHInventors: Michiharu Nakaya, Tatsuya Asai, Andreas Pichler, Thomas Kurz
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Patent number: 9566745Abstract: The invention relates to a method for producing a semi-finished product or component (2), in which a hardenable coating (6, 17) with fiber-reinforced plastic is applied to a metal carrier (3), particularly a metal sheet (4), and the coated metal carrier (3) is formed, particularly deep-drawn or bent, in a subsequent step to produce a semi-finished product or component (2). According to the invention, for an improved and cost-effective method, the metal carrier (3) is coated at most only in certain regions and is only subjected to the forming when the coating thereof (6, 17) has hardened to produce at least a block-resistant surface (12), the coated metal carrier (3) being formed such that the plastic changes in shape follow forming radii (21) and are produced substantially, preferably exclusively, in the coating-free regions (15) of the metal carrier.Type: GrantFiled: April 15, 2013Date of Patent: February 14, 2017Assignee: Voestalpine Stahl GmbHInventors: Franz Androsch, Carola Eyssell, Bernhard Strauss, Christian Walch
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Patent number: 9464337Abstract: Disclosed is a high strength steel sheet having excellent hydrogen embrittlement resistance. The steel sheet has a tensile strength of 1180 MPa or more, and satisfies the following conditions: with respect to an entire metallographic structure thereof, bainite, bainitic ferrite and tempered martensite account for 85 area % or more in total; retained austenite accounts for 1 area % or more; and fresh martensite accounts for 5 area % or less (including 0 area %).Type: GrantFiled: May 28, 2010Date of Patent: October 11, 2016Assignees: KABUSHIKI KAISHA KOBE SEIKO SHO, VOESTALPINE STAHL GMBHInventors: Yoichi Mukai, Kouji Kasuya, Michiharu Nakaya, Michitaka Tsunezawa, Fumio Yuse, Junichiro Kinugasa, Sandra Traint, Andreas Pichler
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Publication number: 20160163307Abstract: A method and an apparatus for the non-contact support of a sensor and/or actuator device with respect to a substrate (2) which reflects sound at least in regions, in particular sheet metal, has a moving suspension device, a sensor and/or actuator device which is mechanically connected to the suspension device, and a positioning device which is mechanically connected to the suspension device and which has at least one non-contact bearing for the non-contact support of the sensor and/or actuator device with respect to the substrate. In order to ensure accurate positioning with respect to the substrate, the positioning device has at least one sonotrode for emitting an ultrasonic field which, between the sonotrode and the substrate, forms acoustic levitation waves for the non-contact support of the sensor and/or actuator device with respect to the substrate by a non-contact bearing which is designed as an ultrasonic bearing.Type: ApplicationFiled: July 22, 2014Publication date: June 9, 2016Applicant: voestalpine Stahl GmbHInventors: Norbert GSTOETTENBAUER, Leopold STEGFELLNER, Gunter LENGAUER
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Publication number: 20160054282Abstract: A lance and a method determine reaction data of the course of a reaction, in which a reaction gas is top-blown by at least one lance onto a metallic melt in a metallurgical vessel and measured data are determined in this way, reaction data for the course of the reaction are determined as a function of these, where the lance for determining measured data blows out a gas which is conveyed separately from the reaction gas through at least one outlet opening of at least one measuring conduit. The lance for determining measured data blows out the gas which is conveyed separately from the reaction gas laterally through at least one outlet opening of at least one measuring conduit and the internal pressure of at least one gas bubble of this gas formed at this outlet opening of the respective measuring conduit is measured.Type: ApplicationFiled: March 25, 2014Publication date: February 25, 2016Applicant: VOESTALPINE STAHL GMBHInventors: Stefan SCHUSTER, Gunter LENGAUER, Harald PANHOFER
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Publication number: 20160002746Abstract: A method for heat treating a manganese steel product whose alloy comprises: a carbon fraction (C) between 0.09 and 0.15 wt. %, and a manganese fraction (Mn) in the range of 3.5 wt. %?Mn?4.9 wt. %, the method comprising: performing a first annealing process (S4.1) with the substeps heating (E1) the steel product to a first holding temperature (T1), which lies above 780° C., holding (H1) the steel product during a first time period (?1) at the first holding temperature (T1), cooling (A1) the steel product, performing a second annealing process (S4.2) with the substeps heating (E2) the steel product to a holding temperature (T2), which lies above 630° C. and below 660° C., holding (H2) the steel product during a second time period (?2) at the holding temperature (T2), cooling (A2) the steel product.Type: ApplicationFiled: December 20, 2013Publication date: January 7, 2016Applicant: VOESTALPINE STAHL GMBHInventors: Enno Arenholz, Ludovic Samek
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Patent number: 9228148Abstract: A method of producing shaped articles made from single-sidedly or double-sidedly galvanized steel sheet, starting from galvanized steel strip, at least one of the steps of the method being a transport operation, and in which, for protection from black-spot corrosion, a corrosion preventive oil is applied which comprises at least one phosphoric acid polyoxyalkylene ester.Type: GrantFiled: November 24, 2009Date of Patent: January 5, 2016Assignee: Voestalpine Stahl GmbHInventors: Stephan Hüffer, Helmut Witteler, Achim Feβenbecker, Karl-Heinz Stellnberger, Martin Fleischanderl
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Publication number: 20150298399Abstract: The invention relates to a method for producing a semi-finished product or component (2), in which a hardenable coating (6, 17) with fiber-reinforced plastic is applied to a metal carrier (3), particularly a metal sheet (4), and the coated metal carrier (3) is formed, particularly deep-drawn or bent, in a subsequent step to produce a semi-finished product or component (2). According to the invention, for an improved and cost-effective method, the metal carrier (3) is coated at most only in certain regions and is only subjected to the forming when the coating thereof (6, 17) has hardened to produce at least a block-resistant surface (12), the coated metal carrier (3) being formed such that the plastic changes in shape follow forming radii (21) and are produced substantially, preferably exclusively, in the coating-free regions (15) of the metal carrier.Type: ApplicationFiled: April 15, 2013Publication date: October 22, 2015Applicant: VOESTALPINE STAHL GMBHInventors: Franz ANDROSCH, Carola EYSSELL, Bernhard STRAUSS, Christian WALCH
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Patent number: 9138797Abstract: In a method for producing a structural part from an iron-manganese-stell sheet (1), a sheet-metal workpiece (2) is cold-formed in a forming die (3). The formed sheet-metal workpiece is heated to a temperature between 500° C. and 700° C. (4) and calibrated in a calibrating die (5).Type: GrantFiled: November 12, 2012Date of Patent: September 22, 2015Assignee: VOESTALPINE STAHL GMBHInventors: Ludovic Samek, Martin Peruzzi, Enno Arenholz
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Patent number: 9090951Abstract: The invention relates to a method for the production of a hardened component made of a hardenable steel, wherein the steel strip is exposed to a temperature increase in an oven, and is thus exposed to an oxidizing treatment such that a surface oxide layer is created, and subsequently a coating using a metal or a metal alloy is carried out. The strip is heated and at least partially austenitized for producing an at least partially hardened component, and subsequently cooled and thereby hardened. The invention also relates to a steel strip produced according to said method.Type: GrantFiled: December 18, 2008Date of Patent: July 28, 2015Assignee: VOESTALPINE STAHL GMBHInventors: Werner Brandstätter, Siegfried Kolnberger, Thomas Kurz, Martin Peruzzi, Johann Strutzenberger, Thomas Manzenreiter
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Publication number: 20150059935Abstract: The present invention relates to high strength cold rolled steel sheet suitable for applications in automobiles, construction materials and the like, specifically high strength steel excellent in formability. In particular, the invention relates to cold rolled steel sheets having a tensile strength of at least 780 MPa.Type: ApplicationFiled: April 2, 2013Publication date: March 5, 2015Applicant: VOESTALPINE STAHL GMBHInventors: Thomas Hebesberger, Daniel Krizan, Stefan Paul, Andreas Pichler
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Publication number: 20150044502Abstract: Disclosed is a hot-dip galvanized steel sheet for stamping, which has excellent cold workability, has such satisfactory surface quality as to be free from unplating and other defects even in the absence of dedicated facilities, and ensures a strength of 1370 MPa or more after quenching even when cooled at a low rate. Also disclosed is a method effective for the produce of the hot-dip galvanized steel sheet for stamping. The hot-dip galvanized steel sheet for stamping comprises a base steel sheet and a hot-dip galvanized layer on a surface of the base steel sheet, in which the base steel sheet has a predetermined chemical composition and has a microstructure comprising equiaxed ferrite having an average aspect ratio of 4.0 or less and cementite and/or pearlite having an average major axis of grains of 20 ?m or less.Type: ApplicationFiled: March 28, 2013Publication date: February 12, 2015Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.), VOESTALPINE STAHL GMBHInventors: Michiharu Nakaya, Tatsuya Asai, Andreas Pichler, Thomas Kurz
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Patent number: 8900873Abstract: The invention relates to a method for continuously determining the concentration of at least one CN compound in an aqueous solution, wherein a carrier gas, for example compressed air, is introduced into the aqueous solution and the introduced carrier gas is fed at least partially to a gas analyzer, for example an HCN gas analyzer, the analysis data of which are considered in the determination of the concentration of the CN compound in the aqueous solution. In order to create advantageous method conditions, the temperature of the aqueous solution exposed to carrier gas is considered in the determination of the concentration of the CN compound.Type: GrantFiled: August 3, 2010Date of Patent: December 2, 2014Assignee: Voestalpine Stahl GmbHInventors: Franz Parzermair, Leopold Moser, Manfred Naderer
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Publication number: 20140214340Abstract: An apparatus and a method for detecting at least one periodically occurring defect on an object, in particular on a metal strip, in which at least one time signal is recorded from the moving object using a measuring method, the time signal is converted into a quality function using a stochastic method and one or more periodic signals in the time signal are inferred on the basis of this quality function in order to thereby detect at least one periodically occurring defect on the object. In order to obtain advantageous method properties, it is proposed to convert the time signal recorded by means of the measuring method, in particular the electromagnetic measuring method, into the quality function using a model-based estimation method, in particular using a maximum likelihood method.Type: ApplicationFiled: July 16, 2012Publication date: July 31, 2014Applicant: VOESTALPINE STAHL GMBHInventors: Thomas Pfatschbacher, Johann Reisinger, Norbert Gstoettenbauer, Stefan Schuster, Karsten Lothar Feiste