Patents Assigned to ArcelorMittal
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Patent number: 12006222Abstract: A method for the manufacture of microwave-reduced graphene oxide (MW-rGO) including: the provision of graphene oxide (GO), the reduction of GO into reduced graphene oxide (rGO) using a reducing agent and the reduction of rGO into MW-rGO by microwaving under air atmosphere in presence of a catalyst.Type: GrantFiled: July 9, 2019Date of Patent: June 11, 2024Assignee: ArcelorMittalInventors: Thi Tan Vu, Oscar Perez Vidal, Juan Jose Arribas, David Noriega Perez, Roberto Suarez Sanchez
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Patent number: 12005496Abstract: A rectangular parallelepiped ingot defined by a height H, a width W and a length L, having longitudinal faces extending between two end faces, having a volume between 0.15 m3 and 0.80 m3 and a surface area to volume ratio between 10 m?1 and 18 m?1, made of at least one metal, including at least one notch and a notch tip along the ingot length, wherein the at least one notch is configured such that: MaxD<H/2, MaxD<W/2 and MaxD being the maximum distance between any point of the ingot and the closest surface of the ingot.Type: GrantFiled: May 13, 2020Date of Patent: June 11, 2024Assignee: ArcelorMittalInventors: Emmanuel Dechassey, Woudhouh Memni, Patrice Vicente-Hernandez
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Patent number: 12000376Abstract: A tower section (1) for wind turbine including a wall including an inner surface (12) and an outer surface (13), the tower section including at least two tubular tower elements (14) stacked and connected together by element connectors (36) each extending astride the two tower elements, each tower element including at least two wall segments (16), connected together by segment connectors (26), the element connectors being arranged on only one of the wall surfaces and the segment connectors being arranged only on the other wall surface and no element connector facing at least partially a segment connector in a radial direction such that the wall is at no point interposed between this element connector and a segment connector.Type: GrantFiled: October 30, 2018Date of Patent: June 4, 2024Assignee: ArcelorMittalInventors: Beatriz Ventura Garcia, Michaël Gremling, Emilie Dupont
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Patent number: 12000050Abstract: A sol composition for producing dielectric layers on a metallic substrate including 10 to 30%, by weight of the sol composition, of a precursor including a trialkoxysilane, 10 to 40%, by weight of the sol composition, of titanium dioxide particles whose median size is below 500 nm, 4.5 to 36%, by weight of the sol composition, of silica particles whose particle size distribution D90 is below 100 nm, 5 to 15%, by weight of the sol composition, of a solvent capable of making the precursor miscible in water, 0.1 to 2%, by weight of the sol composition, of an acidic catalyst, the remainder being water.Type: GrantFiled: March 16, 2021Date of Patent: June 4, 2024Assignee: ArcelorMittalInventor: Sébastien Le Craz
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Patent number: 11998966Abstract: A method for mitigating the effects of coil collapse on hot strip mill coils. A hot strip coil is removed from the mandrel/downcoiler and pre-sagged to create an initial sag by allowing gravity cause the coil to sag in a first specific direction for a first period of time. Then, without coil eye support to limit sagging, the direction of the sag caused by the force of gravity is modified to a direction perpendicular to the first specific direction and gravity is allowed to sag said coil for a second period of time. The first period of time and the second period of time are chosen such that the initial sag created during the first period of time is substantially mitigated by the perpendicular sag during the second period of time. The hot strip coil being cooled enough by the end of the second period of time such that the rate of sagging of the hot strip coil has become negligible.Type: GrantFiled: March 29, 2019Date of Patent: June 4, 2024Assignee: ArcelorMittalInventor: Yuefa Xiao
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Patent number: 11987857Abstract: A cold rolled and annealed steel sheet including by weight: 0.6<C<1.3%, 15?Mn<35%, 6?Al<15%, Si?2.40%, S?0.03%, P?0.1%, N?0.1%, possibly one or more optional elements chosen among Ni, Cr and Cu in an individual amount of up to 3% and possibly one or more elements chosen among B, Ta, Zr, Nb, V, Ti, Mo, and W in a cumulated amount of up to 2.0%, the remainder of the composition making up of iron and inevitable impurities resulting from the elaboration, the microstructure of the sheet including of ordered ferrite between 1% and 10%, optionally of up to 10% of kappa carbides, the remainder being made of austenite, and, the density of the steel sheet being equal or below 7.2 and the FWHM for the austenite matrix is between 0.700 and 1.100.Type: GrantFiled: December 2, 2019Date of Patent: May 21, 2024Assignee: ArcelorMittalInventors: Irène De Diego Calderon, Jean-Christophe Hell
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Patent number: 11965225Abstract: A cold-rolled and heat treated steel sheet, has a composition comprising 0.1%?C?0.4%, 3.5%?Mn?8.0%, 0.1%?Si?1.5%, Al?3%, Mo?0.5%, Cr?1%, Nb?0.1%, Ti?0.1%, V?0.2%, B?0.004%, 0.002%?N?0.013%, S?0.003%, P?0.015%. The structure consists of, in surface fraction: between 8 and 50% of retained austenite, at most 80% of intercritical ferrite, the ferrite grains, if any, having an average size of at most 1.5 ?m, and at most 1% of cementite, the cementite particles having an average size lower than 50 nm, martensite and/or bainite.Type: GrantFiled: January 16, 2023Date of Patent: April 23, 2024Assignee: ARCELORMITTALInventors: Coralie Jung, Astrid Perlade, Kangying Zhu, Frédéric Kegel
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Patent number: 11959150Abstract: A steel sheet that is welded and then cold rolled to a thickness between 0.5 mm and 3 mm, the deformation ratio created by cold rolling in the base metal is equal to ?MB, for which the deformation ratio created by the cold rolling in the welded joint is equal to ?S, where: 0.4 ? ?S ? ? M ? B < 0.7 .Type: GrantFiled: September 9, 2021Date of Patent: April 16, 2024Assignee: ArcelorMittalInventors: Emmanuel Dechassey, Christophe Silvy-Leligois, Francisco Chicharro Herranz, Vicente Polo Mestre, Marie-Christine Theyssier, Thierry Celotto, Christine Kaczynski, Thomas Dupuy, Quang-Tien Ngo
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Publication number: 20240117457Abstract: A cold rolled and annealed steel sheet is provided which includes by weight: 0.6<C<1.3%, 15?Mn<35%, 6.0?Al<15%, Si?2.40%, S?0.015%, P?0.1%, N?0.1%, possibly one or more optional elements chosen among Ni, Cr and Cu in an individual amount of up to 3% and possibly one or more elements chosen among B, Ta, Zr, Nb, V, Ti, Mo, and W in a cumulated amount of up to 2.0%, the remainder of the composition making up of iron and inevitable impurities resulting from the elaboration, the microstructure of said sheet comprising at least 0.1% of intragranular kappa carbides, wherein at least 80% of such kappa carbides have an average size below 30 nm, optionally up to 10% of granular ferrite, the remainder being made of austenite, the average grain size and average aspect ratio of the austenite being respectively below 6 ?m and comprised between 2 and 10 and the average grain size and average aspect ratio of the ferrite, when present, being respectively below 5 ?m and below 3.Type: ApplicationFiled: December 5, 2023Publication date: April 11, 2024Applicant: ARCELORMITTALInventors: Xavier GARAT, Ian Alberto ZUAZO RODRIGUEZ, Irène DE DIEGO CALDERON
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Patent number: 11945511Abstract: A design and a production method of a front floor reinforcement structure 1 for a vehicle 3 having a battery pack 5 in the tunnel 7 designed to improve the energy absorption of the vehicle during a side impact by involving the front floor panel 11 in the energy absorption during the side impact. The front floor reinforcement structure 1 includes a front floor cross member 13 having a non-deformable portion 14 located on the end of the front floor cross member 13 closest to the side sill 9 and a deformable portion 16 located on the end of the front floor cross member 13 closest to the tunnel 7. The resistance to plastic deformation of the non-deformable portion 14 is greater than the resistance to plastic deformation of the deformable portion 16, which is itself greater than the resistance to plastic deformation of the front floor panel 11.Type: GrantFiled: November 25, 2019Date of Patent: April 2, 2024Assignee: ArcelorMittalInventor: Nicolas Schneider
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Patent number: 11945503Abstract: A method for producing a welded blank (1) includes providing two precoated sheets (2), butt welding the precoated sheets (2) using a filler wire. The precoating (5) entirely covers at least one face (4) of each sheet (2) at the time of butt welding. The filler wire (20) has a carbon content between 0.01 wt. % and 0.45 wt. %. The composition of the filler wire (20) and the proportion of filler wire (20) added to the weld pool is chosen such that the weld joint (22) has (a) a quenching factor FTWJ: FTWJ?0.9FTBM?0, where FTBM is a quenching factor of the least hardenable substrate (3), and FTWJ and FTBM are determined: FT=128+1553×C+55×Mn+267×Si+49×Ni+5×Cr?79×Al?2×Ni2?1532×C2?5×Mn2?127×Si2?40×C×Ni?4×Ni×Mn, and (b) a carbon content CWJ<0.15 wt. % or, if CWJ?0.15 wt. %, a softening factor FAWJ such that FAWJ>5000, where FA=10291+4384.1×Mo+3676.9Si?522.64×Al?2221.2×Cr?118.11×Ni?1565.1×C?246.67×Mn.Type: GrantFiled: November 26, 2018Date of Patent: April 2, 2024Assignee: ARCELORMITTALInventors: Cristian Alvarez, Thierry Lizon, Maria Poirier
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Patent number: 11945963Abstract: A non-conductive substrate being at least partially coated with a paint including reduced graphene oxide and a thermosetting polymer, the non-conductive substrate being directly coated by the paint, a method for the manufacture of this coated non-conductive substrate, methods for detecting leaks or strain deformation and the uses of said coated non-conductive substrate.Type: GrantFiled: June 11, 2019Date of Patent: April 2, 2024Assignee: ArcelorMittalInventors: Abel Alvarez-Alvarez, Oscar Perez Vidal, Carlos Javier Rodriguez Martinez, Jose Paulino Fernandez Alvarez, Carlos Suarez Garcia, Hugo Blanco Iglesias, Jorge Melconmiguel
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Patent number: 11939221Abstract: A method for the manufacture of reduced graphene oxide from electrode graphite scrap including the provision of the graphite electrode scrap, the grinding of electrode graphite scrap to obtain ground graphite electrode, an oxidation step of the ground graphite electrode to obtain graphene oxide and the reduction into reduced graphene oxide.Type: GrantFiled: April 10, 2019Date of Patent: March 26, 2024Assignee: ArcelorMittalInventors: Thi Tan Vu, Abel Alvarez-Alvarez, Roberto Suarez Sanchez
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Patent number: 11939643Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.Type: GrantFiled: September 20, 2021Date of Patent: March 26, 2024Assignee: ArcelorMittalInventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein
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Patent number: 11932916Abstract: The present invention provides a method of dynamical adjustment for manufacturing a thermally treated steel sheet.Type: GrantFiled: December 20, 2017Date of Patent: March 19, 2024Assignee: ArcelorMittalInventors: Frédéric Bonnet, Van Thang Pham
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Patent number: 11920208Abstract: A cold-rolled and heat-treated steel sheet, has a composition comprising, by weight percent: n0.10%?C?0.25%, 3.5%?Mn—?6.0%, 0.5%?Si?2.0%, 0.3%?Al?1.2%, with Si+Al?0.8%, 0.10%?Mo?0.50%, S?0.010%, P?0.020%, N?0.008%. The cold-rolled steel sheet has a microstructure consisting of, in surface fraction: between 10% and 45% of ferrite, having an average grain size of at most 1.3 ?m, the product of the surface fraction of ferrite by the average grain size of the ferrite being of at most 35 ?m %, between 8% and 30% of retained austenite, the retained austenite having an Mn content higher than 1.1*Mn %, Mn % designating the Mn content of the steel, at most 8% of fresh martensite, at most 2.5% of cementite and partitioned martensite.Type: GrantFiled: December 18, 2018Date of Patent: March 5, 2024Assignee: ARCELORMITTALInventors: Coralie Jung, Astrid Perlade, Kangying Zhu, Frédéric Kegel
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Patent number: 11920207Abstract: A cold rolled heat treated steel sheet having a composition with the following elements, expressed in percentage by weight 0.1%?Carbon?0.5%, 1%?Manganese?3.4%, 0.5%?Silicon?2.5%, 0.03%?Aluminum?1.5%, 0%?Sulfur?0.003%, 0.002%?Phosphorus?0.02%, 0%?Nitrogen?0.01% and can contain one or more of the following optional elements 0.05%?Chromium?1%, 0.001%?Molybdenum?0.5%, 0.001%?Niobium?0.1%, 0.001%?Titanium?0.1%, 0.01%?Copper?2%, 0.01%?Nickel?3%, 0.0001%?Calcium?0.005%, 0%?Vanadium?0.1%, 0%?Boron?0.003%, 0%?Cerium?0.1%, 0%?Magnesium?0.010%, 0%?Zirconium?0.010%, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet having in area fraction, 10 to 30% Residual Austenite, 50 to 85% Bainite, 1 to 20% Quenched Martensite, and less than 30% Tempered Martensite.Type: GrantFiled: November 5, 2018Date of Patent: March 5, 2024Assignee: ArcelorMittalInventors: Jean-Marc Pipard, Artem Arlazarov
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Patent number: 11919102Abstract: A method for the manufacture of an assembly of at least two metallic substrates spot welded together through at least one spot welded joint, such method including two steps, the assembly obtainable according to this method and the use of this assembly for the manufacture of automotive vehicle.Type: GrantFiled: September 9, 2019Date of Patent: March 5, 2024Assignee: ArcelorMittalInventors: Tiago Machado Amorim, Stéphanie Michaut, Maxime Brossard, Pascal Bertho, Jean-Marie Helmer
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Patent number: 11911847Abstract: A method for producing a part includes providing a first and a second precoated sheet (1,2), butt welding the first and second precoated sheets (1) to obtain a blank (15), and heating the blank (15) to a heat treatment temperature at least 10° C. lower than the full austenitization temperature of the weld joint (22) and at least 15° C. higher than a minimum temperature Tmin: T min ? ( ° ? ? C . ) = AC ? ? 3 ? ( WJ ) - ? IC max 100 ? ( Ac ? ? 3 ? ( WJ ) - 673 - 40 × Al ) .Type: GrantFiled: February 26, 2019Date of Patent: February 27, 2024Assignee: ARCELORMITTALInventors: Francis Schmit, Maria Poirier, Sadok Gaied
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Patent number: 11884987Abstract: A method for the manufacture of a galvannealed steel sheet including the provision of a specific steel sheet, a recrystallization annealing with specific heating, soaking and cooling sub-steps using an inert gas, a hot-dip galvanizing and an alloying treatment; the galvannealed steel sheet and the use of the galvannealed steel sheet.Type: GrantFiled: October 19, 2018Date of Patent: January 30, 2024Assignee: ArcelorMittalInventors: David Zapico Alvarez, Florence Bertrand, Joris Giroux