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191.发明授权公开(公告)号：US12247274B2
公开(公告)日：2025-03-11
申请号：US17060493
申请日：2020-10-01
Applicant: ArcelorMittal
Inventor： Patrick Barges , Ian Alberto Zuazo Rodriguez
IPC: C22C38/04 , C21D6/00 , C21D8/02 , C22C38/02 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16
Abstract: A method of production of a cold rolled and heat treated steel sheet has the following steps: providing a cold rolled steel sheet with a composition including the following elements, expressed in percent by weight: 0.15%≤carbon≤0.6%, 4%≤manganese≤20%, 5%≤aluminum≤15%, 0≤silicon≤2%, aluminum+ silicon≥6.5%, a remainder being composed of iron and unavoidable impurities caused by processing; heating said cold rolled steel sheet up to a soaking temperature between 80° and 950° C. during less than 600 seconds, then cooling the sheet down to a temperature in a range of 600° C. to room temperature, reheating the steel sheet to a soaking temperature of 150° C. to 600° C. during 10 s to 250 h, then cooling the sheet.
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公开(公告)号：US20250035607A1
公开(公告)日：2025-01-30
申请号：US18716687
申请日：2022-12-06
Applicant: ArcelorMittal
Inventor： Thomas DIEUDONNE
IPC: G01N33/2025 , C21D1/26 , C21D1/74
Abstract: A method for evaluating the hydrogen content in a steel sheet while being submitted to an annealing process, including the following steps: estimating the microstructure of the steel sheet according to the temperature curve, computing the solubility of the hydrogen CH, computing the volume concentration of trapped hydrogen in dislocations CT and the volume concentration of hydrogen in interstitial sites of the crystal lattice CL, calculating the hydrogen content Ctotal=CL+CT at each time step of the annealing process and outputting the hydrogen content Ctotal at each time step to a user.
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公开(公告)号：US20250034669A1
公开(公告)日：2025-01-30
申请号：US18716603
申请日：2021-12-16
Applicant: ArcelorMittal
Abstract: A steel manufacturing method includes the steps of producing direct reduced iron in a direct reduction plant (1) using a syngas (70) resulting from the gasification of solid waste fuels, producing hot metal (22) and a blast furnace top gas (21) in a blast furnace (2) using a hot blast (20), the blast furnace top gas (21) being at least partly (21A) used into the direct reduction plant (1) and producing molten metal and electric furnace gas in an electric furnace (3) using the produced direct reduced iron (12). Associated network of plants.
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公开(公告)号：US20250034668A1
公开(公告)日：2025-01-30
申请号：US18716423
申请日：2022-12-07
Applicant: ArcelorMittal
Abstract: A Steel manufacturing method including the step of producing direct reduced iron (12) and a reduction top gas (13) in a direct reduction plant (1) using a reducing gas (11), the reduction top (13) being at least partly (13A) recycled as reducing gas (11), producing hot metal and a blast furnace top gas (21) in a blast furnace (2), wherein from 200 Nm3 to 700 Nm3 of hydrogen (20) per ton of hot metal to be produced are injected and the blast furnace top gas (21A) being at least partly sent to a biochemical plant (4) to produce hydrocarbons and producing molten metal and electric furnace gas in an electric furnace (3) using at least a part of the produced direct reduced iron (12).
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195.发明授权公开(公告)号：US12188904B2
公开(公告)日：2025-01-07
申请号：US17779033
申请日：2020-11-27
Applicant: ArcelorMittal
Inventor： Pablo Gómez García , José Paulino Fernandez Alvarez , Ignacio Baquet González , José Tomás Símaro , Ignacio Herrero Blanco , Enol Fernández Diéguez , Carlos Javier Suárez Lázare
IPC: G01N29/04 , C21B7/24 , C21C5/44 , F27D21/00 , G01B17/02 , G01M5/00 , G01M7/08 , G01N29/12 , G01N29/44 , G01N29/46
Abstract: A system for estimating both thickness and wear state of refractory material of a metallurgical furnace, including at least one processor including a database of simulated frequency domain data named simulated spectra representing simulated shock waves reflected in simulated refractory materials of known state and thickness, each simulated spectrum being correlated with both known state and thickness data of the considered simulated refractory material, wherein the at least one processor is configured to record a reflected shock wave as a time domain signal, and to convert it into frequency domain data named experimental spectrum, and are further configured to compare the experimental spectrum with at least a plurality of simulated spectra from the database, to determine the best fitting simulated spectrum with the experimental spectrum and to estimate thickness and state of the refractory material of the furnace using known state and thickness data correlated with the best fitting simulated spectrum.
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Patent Agency Ranking
公开(公告)号：US20240410069A1
公开(公告)日：2024-12-12
申请号：US18717023
申请日：2021-12-20
Applicant: ArcelorMittal
Inventor： Hervé LAVELAINE DE MAUBEUGE
Abstract: A method for manufacturing iron metal in an apparatus through reduction of iron ore by an electrolysis reaction, the electrolysis reaction generating a gas, the apparatus including at least one casing including a gas permeable anode plate, a cathode plate, both facing each other and being separated by an electrolyte chamber, the cathode and the anode being connected to an electric power supply, the casing being provided with a circulator for circulating an electrolyte within the chamber and with a inlet to supply iron ore to the chamber, the pressure P of the electrolyte within the casing being maintained at a value of at least Plimit and the voltage V applied between the cathode and said anode being maintained at a value of at least Vlimit, the voltage V being always kept at a value strictly below the reduction curve of the electrolyte for the pressure P.
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公开(公告)号：US12162759B2
公开(公告)日：2024-12-10
申请号：US17051702
申请日：2019-04-05
Applicant: ARCELORMITTAL
Inventor： Thi Tan Vu
IPC: C01B32/198 , C01B32/19 , C01B32/194 , C01B32/196 , C01B32/23
Abstract: A method for the manufacture of reduced graphene oxide from Kish graphite including the pretreatment of kish graphite, the oxidation of pre-treated kish graphite into graphene oxide and the reduction of graphene oxide into reduced graphene oxide, the reduced graphene oxide and the use of the graphene oxide.
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公开(公告)号：US20240401935A1
公开(公告)日：2024-12-05
申请号：US18691323
申请日：2021-09-17
Applicant: ArcelorMittal
Inventor： Mounir AMOURAK , Olivier MADELAINE-DUPUICH , Jean-Marc HEMMEN , Pierre GAUJE , Florent SPONEM
Abstract: A calibrating bar, for calibrating a multi-roll leveller for metal strips, the calibrating including a first groove on a first face wherein a first optical fibre is embedded by an adhesive, a second groove on a second face, being opposite to the first face, wherein a second optical fibre is embedded by means of an adhesive, the first optical fibre and the second optical fibre including a fibre Bragg grating and being essentially parallel, the first optical fibre and the second optical fibre being located at the same distance from the neutral plane N, the first embedded optical fibre and the second embedded optical fibre being configured such that they can be connected to an optical coupler and such that it has a sufficient length to extend over all the rolls of said multi-roll leveller.
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公开(公告)号：US20240401162A1
公开(公告)日：2024-12-05
申请号：US18690821
申请日：2022-08-26
Applicant: ArcelorMittal
Inventor： Sebastian COBO , Alice DUMONT , Pascal DIETSCH , Stéphanie MICHAUT
Abstract: A press hardened steel part having a composition including, by weight percent: C 0.2-0.34%, Mn 0.50-1.24%, Si 0.5-2%, P≤0.020%, S≤0.010%, N≤0.010%, and including optionally one or more of the following elements: Al: ≤0.2%, Cr≤0.8%, Nb≤0.06%, Ti≤0.06%, B≤0.005%, Mo≤0.35% the remainder of the composition being iron and unavoidable impurities resulting from the smelting. The press hardened steel part has a microstructure including, in surface fraction, 95% or more of tempered martensite and 5% or less of bainite, austenite or ferrite.
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公开(公告)号：US20240399438A1
公开(公告)日：2024-12-05
申请号：US18690779
申请日：2022-09-06
Applicant: ArcelorMittal
Inventor： Arnaud COCU , Alice DUMONT
IPC: B21D22/02
Abstract: A high strength, high slenderness structural part having excellent energy absorption properties in the case of an impact is provided. In particular, a structural part for use in an automotive vehicle is provided. The structural part has an ultimate tensile strength higher than 1000 MPa, a yield strength to ultimate tensile strength ratio higher than 0.85, a bending angle normalized to 1.5 mm thickness higher than 55° and a slenderness ratio higher than 10.
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