公开(公告)号：US20230030877A1

公开(公告)日：2023-02-02

申请号：US17785611

申请日：2019-12-20

Applicant: ArcelorMittal

Inventor： Valérie DAESCHLER ,  Frédéric BONNET ,  Rosalia REMENTERIA FERNANDEZ ,  Diego Alejandro SEGOVIA PEREZ

IPC: B22F1/065 ,  B22F1/052 ,  C22C1/03 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00

Abstract: A metal powder for additive manufacturing having a composition including the following elements, expressed in content by weight: 0.01%≤C≤0.2%, 2.5%≤Ti≤10%, (0.45×Ti)−1.35%≤B≤(0.45×Ti)+0.70%, S≤0.03%, P≤0.04%, N≤0.05%, O≤0.05% and optionally containing: Si≤1.5%, Mn≤3%, Al≤1.5%, Ni≤1%, Mo≤1%, Cr≤3%, Cu≤1%, Nb≤0.1%, V≤0.5% and including eutectic precipitates of TiB2 and optionally of Fe2B, the balance being Fe and unavoidable impurities resulting from the elaboration, the metal powder having a mean roundness of at least 0.70. The invention also relates to its manufacturing method by argon atomization.

公开(公告)号：US20230002847A1

公开(公告)日：2023-01-05

申请号：US17784848

申请日：2020-12-16

Applicant: ArcelorMittal

Inventor： Astrid PERLADE ,  Kangying ZHU ,  Coralie JUNG ,  Frederic KEGEL

IPC: C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

Abstract: A cold rolled and heat-treated steel sheet having a composition including, by weight percent C: 0.12-0.25% Mn: 3.0-8.0%, Si: 0.70-1.50%, Al: 0.3-1.2%, B: 0.0002-0.004%, S≤0.010%, P≤0.020%, N≤0.008%, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, and having a microstructure consisting of, in surface fraction: between 5% and 45% of ferrite, between 25% and 85% of partitioned martensite, the partitioned martensite having a carbides density strictly less than 2×106/mm2, between 10% and 30% of retained austenite, less than 8% of fresh martensite, a part of the fresh martensite being combined with retained austenite in the shape of martensite-austenite islands in total surface fraction less than 10%.

公开(公告)号：US20230002842A1

公开(公告)日：2023-01-05

申请号：US17784759

申请日：2020-12-16

Applicant: ArcelorMittal

Inventor： Astrid PERLADE ,  Kangying ZHU ,  Coralie JUNG ,  Frédéric KEGEL

IPC: C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/04 ,  C22C38/02

Abstract: A hot rolled and annealed steel sheet having a composition including, by weight percent: C: 0.1-0.25%, Mn: 3.00-5.00%, Si: 0.80-1.60%, B: 0.0003-0.004%, S≤0.010%, P≤0.020%, N≤0.008% the remainder of the composition being iron and unavoidable impurities resulting from the smelting, and having a microstructure consisting of, in surface fraction: more than 20% of recrystallized ferrite, the balance being non-recrystallized ferrite, more than 15% of said recrystallized ferrite having grain size larger than 5 μm and a density of carbides at grain boundary of recrystallized ferrite less than 5 carbides per 10 μm of grain boundary length

公开(公告)号：US20220411911A1

公开(公告)日：2022-12-29

申请号：US17771568

申请日：2020-10-29

Applicant: ArcelorMittal

Inventor： Thi Tan VU ,  Laura MEGIDO FERNANDEZ ,  Carlota DOMINGUEZ FERNANDEZ ,  Jorge RODRIGUEZ GARCIA ,  David NORIEGA PEREZ ,  Roberto SUAREZ SANCHEZ ,  Cristina BLANCO ROLDAN

IPC: C23C2/04 ,  C23C2/40 ,  C22C38/40

Abstract: A coated stainless-steel substrate including a coating including nanographites and a binder being sodium silicate, wherein the stainless-steel substrate has the following composition in weight percent: C≤1.2%, Cr≥11.0%, Ni≥8.0% and on a purely optional basis, one or more elements such as Nb≤6.0%, B≤1.0%, Ti≤3.0%, Cu≤5.0%, Co≤3.0%, N≤1.0%, V≤3.0%, Si≤4.0%, Mn≤5.0%, P≤0.5%, S≤0.5%, Mo≤6.0%, Ce≤1.0%, the remainder of the composition being made of iron and inevitable impurities resulting from the elaboration. A method for the manufacture of this coated stainless-steel substrate is also provided.

公开(公告)号：US20220404316A1

公开(公告)日：2022-12-22

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 ,  G01N29/46 ,  G01N29/44 ,  G01B17/02 ,  G01N29/12 ,  C21B7/24

Abstract: A system for estimating both thickness and wear state of refractory material (1) of a metallurgical furnace (12), including at least on 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 (1) of the furnace (12) using known state and thickness data correlated with the best fitting simulated spectrum.

公开(公告)号：US20220396862A1

公开(公告)日：2022-12-15

申请号：US17776039

申请日：2020-11-06

Applicant: ArcelorMittal

Inventor： Diego DIAZ FIDALGO ,  Silvino FERNANDEZ ALZUETA ,  Segundo ALVAREZ GARCIA ,  David MENDEZ HERES

IPC: C23C2/00 ,  G06Q10/06

Abstract: A method for setting the production schedule of a multiplicity of galvanized coils of metallic strip on a continuous galvanizing line is provided, the method including the steps of evaluating, for each possible combination of two uncoated coils, the impact of the transition from the first uncoated coil to the second uncoated coil on the quality of the galvanized coils, allocating to each possible combination of uncoated coils a weighting factor which depends on the results of the previous step and which takes into account the line constraints, computing the results of the previous step by calculating, for a number of possible schedules of the multiplicity of uncoated coils, a score which depends on the sum of the weighting factors attributed to the combinations of uncoated coils involved in the given schedule and by selecting the schedule with the optimal score.

公开(公告)号：US20220396845A1

公开(公告)日：2022-12-15

申请号：US17771862

申请日：2020-10-20

Applicant: ArcelorMittal

Inventor： Raisa GRIGORIEVA ,  Florin DUMINICA ,  Brahim NABI ,  Pascal DRILLET ,  Thierry STUREL

IPC: C21D7/13 ,  C21D8/02 ,  C23C2/12 ,  C23C2/28 ,  C23C14/35

Abstract: press hardening method includes the following steps: A. the provision of a steel sheet for heat-treatment, precoated with a zinc- or aluminum-based pre-coating, B. the deposition of a hydrogen barrier pre-coating over a thickness from 10 to 550 nm, and comprising at least one element chosen from among: nickel, chromium, magnesium, aluminum and yttrium, C. batch annealing of the precoated steel sheet to obtain a pre-alloyed steel sheet, the cooling after the batch annealing being performed at a speed of 29.0° C.h−1 or less, D. the cutting of the pre-alloyed steel sheet to obtain blank, E. thermal treatment of the blank to obtain a fully austenitic microstructure in the steel, F. the transfer of the blank into a press tool, G. the hot-forming of the blank to obtain a part, H. the cooling of the part obtained at step G).

公开(公告)号：US11525182B2

公开(公告)日：2022-12-13

申请号：US16381488

申请日：2019-04-11

Applicant: ArcelorMittal

Inventor： Daniel Chaleix ,  Daniel Jacques ,  Sergio Pace ,  Eric Silberberg ,  Bruno Schmitz ,  Xavier Vanden Eynde

IPC: C23C14/28 ,  B32B15/00 ,  C25D13/02 ,  C23C14/16 ,  C23C14/56 ,  C23C28/00 ,  C25D13/16 ,  C23C14/58 ,  C23C14/14 ,  C25D13/12

Abstract: A steel sheet is provided with a coating having at least one layer of zinc and a top layer of paint applied by cataphoresis. The zinc layer is deposited by a jet vapor deposition process in a deposition chamber maintained at a pressure between 6·10−2 mbar and 2·10−1 mbar. A fabrication method and an installation are also provided.

公开(公告)号：US20220389594A1

公开(公告)日：2022-12-08

申请号：US17774028

申请日：2019-11-05

Applicant: ArcelorMittal

Inventor： Pierre RICHET ,  Forent SPONEM

IPC: C23G3/02 ,  B08B3/04 ,  B08B3/12

Abstract: A continuous cleaning installation 1 of a passing strip S includes a tank 2, an aqueous solution 3 inside the tank 2. It also includes at least a roll 4 immerged in the aqueous solution 3, at least an ultrasound emitter 5, a feed for feeding 6 an aqueous solution and emptying 7 the tank. Moreover, it also includes and estimator for estimating 8 the aqueous solution level, a calculator for calculating 9 for each ultrasound emitter 5 its distance to the aqueous solution level and a controller for controlling the power 10 of the at least one ultrasound emitter 5 and at least an impermeable closable opening 11 on at least a lateral side of the tank through which the at least one ultrasound emitter 5 can pass.

公开(公告)号：US11519052B2

公开(公告)日：2022-12-06

申请号：US17273466

申请日：2019-08-28

Applicant: ArcelorMittal

Inventor： Makhlouf Hamide ,  Marc Anderhuber ,  Alain Daubigny ,  Laurent Lutz

IPC: C21D9/573

Abstract: A cooling roll including an axle and a sleeve, the sleeve having a length and a diameter and being structured as follows: an inner cylinder, a plurality of magnets disposed along at least a portion of the inner cylinder length, each magnet being defined by a width, a height and a length, a cooling system surrounding at least a portion of the plurality of magnets, the cooling system and the plurality of magnets being separated by a gap defined by a height, the gap height being the smallest distance between a magnet and the cooling system above, the magnets having a width such that the following formula is satisfied: gap height×1.1≤magnet width≤gap height×8.6.