公开(公告)号：US20240110257A1

公开(公告)日：2024-04-04

申请号：US18538254

申请日：2023-12-13

Applicant: ArcelorMittal

Inventor： David ZAPICO ALVAREZ ,  Florence BERTRAND ,  Joris GIROUX

IPC: C21D9/46 ,  B32B15/01 ,  C21D1/26 ,  C21D1/76 ,  C21D6/00 ,  C21D9/00 ,  C21D9/56 ,  C21D9/573 ,  C22C18/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/14 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/00 ,  C23C2/02 ,  C23C2/04 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40

CPC classification number: C21D9/46 ,  B32B15/013 ,  C21D1/26 ,  C21D1/76 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D9/0062 ,  C21D9/561 ,  C21D9/573 ,  C22C18/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/14 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/0038 ,  C23C2/02 ,  C23C2/0224 ,  C23C2/024 ,  C23C2/04 ,  C23C2/06 ,  C23C2/261 ,  C23C2/28 ,  C23C2/40 ,  C21D1/74 ,  C21D2201/02 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008

Abstract: A galvannealed steel sheet ontainabel by a method 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.

公开(公告)号：US11939221B2

公开(公告)日：2024-03-26

申请号：US17055780

申请日：2019-04-10

Applicant: ArcelorMittal

Inventor： Thi Tan Vu ,  Abel Alvarez-Alvarez ,  Roberto Suarez Sanchez

IPC: C01B32/198

CPC classification number: C01B32/198

Abstract: 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.

公开(公告)号：US20240060160A1

公开(公告)日：2024-02-22

申请号：US18267000

申请日：2021-12-09

Applicant: ArcelorMittal

Inventor： Christophe CASTAN ,  Michel D'AMORE ,  Gilles MANGIN ,  Laura RIGONI MEDEIROS

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

CPC classification number: C22C38/04 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0473 ,  C21D8/0478 ,  C21D9/46 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C21D2211/005

Abstract: A tin coated steel sheet is provided for manufacturing a drawn can having: a thickness inferior to 0.7 mm, a yield strength inferior to 400 MPa, an average grain aspect ratio below 1.5, a strain hardening coefficient below 1.5, a tin coating from 0.5 to 4.0 g·m−2 on a first face and from 2.8 to 11.2 g·m−2 on a second face, a chemical composition comprising in weight percent 0.002≤C≤0.09 and 0.0015≤B≤0.005 and a balance of Fe and unavoidable impurities, and the steel sheet having a ferritic microstructure with a mean grain size from 5 to 15 μm.

公开(公告)号：US20240033814A1

公开(公告)日：2024-02-01

申请号：US18265907

申请日：2020-12-15

Applicant: ArcelorMittal

Inventor： Jackie LEUNG ,  Stephen Daeyoung CHUNG ,  Joydeep SENGUPTA ,  Tim RAYNER

IPC: B22D11/16 ,  B22D2/00 ,  B22D46/00 ,  B22D11/04 ,  B22D11/18 ,  B22D11/20 ,  B22D11/108

CPC classification number: B22D11/165 ,  B22D2/001 ,  B22D46/00 ,  B22D11/04 ,  B22D11/185 ,  B22D11/204 ,  B22D11/108

Abstract: A method of casting a steel semi-product wherein a liquid steel is poured from a ladle to a tundish through a shroud including the steps of determining the light intensity emitted from the surface of the liquid steel in the tundish, detecting, based on said determined intensity, the presence of an open-eye at the surface of the liquid steel and emitting an alert towards an operator when an open-eye is detected.

公开(公告)号：US11884987B2

公开(公告)日：2024-01-30

申请号：US16760399

申请日：2018-10-19

Applicant: ARCELORMITTAL

Inventor： David Zapico Alvarez ,  Florence Bertrand ,  Joris Giroux

IPC: C21D9/46 ,  B32B15/01 ,  C21D1/26 ,  C21D1/76 ,  C21D6/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/02 ,  C23C2/06 ,  C23C2/40 ,  C21D9/56 ,  C21D9/573 ,  C22C18/04 ,  C22C38/38 ,  C23C2/04 ,  C23C2/28 ,  C22C38/14 ,  C21D9/00 ,  C21D1/74 ,  C23C28/00

CPC classification number: C21D9/46 ,  B32B15/013 ,  C21D1/26 ,  C21D1/76 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D9/0062 ,  C21D9/561 ,  C21D9/573 ,  C22C18/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/14 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/02 ,  C23C2/04 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C21D1/74 ,  C21D2201/02 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/008 ,  C23C28/321 ,  C23C28/345

Abstract: 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.

公开(公告)号：US20240026491A1

公开(公告)日：2024-01-25

申请号：US18110036

申请日：2023-02-15

Applicant: ArcelorMittal

Inventor： Frédéric BONNET ,  Yannick DOH

IPC: C21D11/00 ,  B32B15/01 ,  C21D1/667 ,  C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C23C2/06 ,  C23C2/28

CPC classification number: C21D11/005 ,  B32B15/012 ,  B32B15/013 ,  C21D1/667 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0236 ,  C21D9/46 ,  C23C2/06 ,  C23C2/29 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008

Abstract: A method for manufacturing a thermally treated steel sheet is described. The method includes:



A. preparation step containing:

1) a selection substep, wherein:

a. mtarget and a chemical composition are compared to a list of predefined products, whose microstructure contains predefined phases and predefined proportion of phases, and a product having a microstructure mstandard closest to mtarget and TPstandard is selected, including at least a heating, a soaking and a cooling steps, to obtain mstandard,
b. a heating path, a soaking path including a soaking temperature Tsoaking, a power cooling of the cooling system and a cooling temperature Tcooling are selected based on TPstandard and


2) a calculation substep, wherein through variation of the cooling power, new cooling paths CPx are calculated based on the product selected in step A.1)a and TPstandard, the initial microstructure mi of the steel sheet to reach mtarget, the heating path, the soaking path comprising Tsoaking and Tcooling, the cooling step of TPstandard is recalculated using said CPx in order to obtain new thermal paths TPx, each TPx corresponding to a microstructure mx,
3) a selection substep wherein one TPtarget to reach mtarget is selected, TPtarget being chosen among the calculated thermal paths TPx and being selected such that mx is the closest to mtarget, and


B. a thermal treatment step wherein TPtarget is performed on the steel sheet.

公开(公告)号：US20240026487A1

公开(公告)日：2024-01-25

申请号：US18265863

申请日：2021-12-08

Applicant: ArcelorMittal

Inventor： Florence BERTRAND ,  Didier HUIN ,  Hubert SAINT-RAYMOND

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

CPC classification number: C21D9/46 ,  C22C38/04 ,  C22C38/02

Abstract: A method for the manufacture of a steel sheet, in a device including a pre-heating section, a heating section having a maximal heating rate and a soaking section including a calibrating step, a recrystallization annealing and a soaking and a coating step. The calibration step permits to define a lower dew point permitting to achieve a predefined quality target.

公开(公告)号：US20230415273A1

公开(公告)日：2023-12-28

申请号：US18037604

申请日：2021-11-04

Applicant: ArcelorMittal

Inventor： Bert VAN WEZEMAEL

IPC: B23K26/38 ,  B23K37/04

CPC classification number: B23K26/38 ,  B23K2101/185 ,  B23K37/04

Abstract: Laser cutting process to produce n trimmed sub-blanks, n being an integer strictly greater than 1, from a mother blank made of metallic material, having the following steps: Op1/ positioning the mother blank on a cutting table having n laths arranged to be moveable relative to one another in a transverse direction, Op2/ clamping at least part of the mother blank to the cutting table, Op3/ cutting, using a laser source, n untrimmed sub-blanks from the mother blank in a longitudinal cutting direction, Op4/ separating the n laths of the cutting table from one another in a transverse direction, Op5/ releasing the clamping, Op6/ clamping the n untrimmed sub-blanks to the n laths, Op7/ laser trimming the n untrimmed sub-blanks in order to form n trimmed sub-blanks, Op8/ releasing the clamping, Op9/ discharging the n trimmed sub-blanks from the cutting table.

公开(公告)号：US20230381897A1

公开(公告)日：2023-11-30

申请号：US18031426

申请日：2020-10-21

Applicant: ArcelorMittal

Inventor： Alvaro MANJON FERNANDEZ ,  Sivasambu BOHM ,  Marcos PEREZ RODRIGUEZ ,  Christopher GERRITSEN

IPC: B23K35/368 ,  B23K35/362 ,  B23K35/02 ,  B23K26/21 ,  B23K9/00

CPC classification number: B23K35/368 ,  B23K35/362 ,  B23K35/0266 ,  B23K26/21 ,  B23K9/00

Abstract: A welding flux including a titanate and a nanoparticulate Niobium compound chosen from among Niobium oxides, alkali niobates and mixtures thereof.

公开(公告)号：US11827951B2

公开(公告)日：2023-11-28

申请号：US17414400

申请日：2018-12-21

Applicant: ArcelorMittal

Inventor： William P. Umlauf ,  Oscar Lanzi, III ,  Johnny C. Brannbacka ,  John A. Rotole ,  Robert Bing

IPC: C21D9/56 ,  F27D7/06 ,  F27D7/02 ,  F27D21/04 ,  F27D19/00

CPC classification number: C21D9/561 ,  F27D7/02 ,  F27D7/06 ,  F27D21/04 ,  F27D2019/0012 ,  F27D2019/0028

Abstract: A steel strip annealing furnace with a dew point control system. The furnace/control system can be more readily controlled to the desired dew point than the prior art control system and can handle the set point changes required as different types of steel coils are continuously run therethrough.