公开(公告)号：US20220176485A1

公开(公告)日：2022-06-09

申请号：US17603463

申请日：2020-04-16

Applicant: ArcelorMittal

Inventor： Alvaro MANJON FERNANDEZ ,  Marcos PEREZ RODRIGUEZ ,  Roberto SUAREZ SANCHEZ ,  Sivasambu BOHM

IPC: B23K9/18 ,  C23C28/00 ,  B23K9/23 ,  B23K9/02 ,  B23K9/235 ,  B23K35/36

Abstract: A pre-coated steel substrate wherein the coating including at least one titanate and at least one nanoparticle; a method for the manufacture of an assembly; a method for the manufacture of a coated steel substrate and a coated substrate substrate. It is particularly well suited for construction, shipbuilding and offshore industries.

公开(公告)号：US11339454B2

公开(公告)日：2022-05-24

申请号：US16898395

申请日：2020-06-10

Applicant: ArcelorMittal

Inventor： Gunhild Cécilia Föjer ,  Jan Mahieu

IPC: C21D9/46 ,  C22C38/28 ,  C21D8/02 ,  C22C38/02 ,  C22C38/00 ,  C22C38/38 ,  C22C38/06 ,  C22C38/04 ,  A61F13/02 ,  A61K9/70 ,  B26D7/18 ,  B26F1/38

Abstract: A method for manufacturing a steel sheet having a yield strength YS of more than 1000 MPa, a tensile strength TS of more than 1150 MPa and a total elongation E of more than 8%, includes the steps of—preparing a steel sheet through rolling from a steel containing in percent by weight 0.19% to 0.22% C, 2% to 2.6% Mn, 1.45% to 1.55% Si, 0.15% to 0.4% Cr, less than 0.020% P, less than 0.05% S, less than 0.08% N, 0.015% to 0.070% Al, the reminder being Fe and unavoidable impurities; and soaking the sheet at an annealing temperature TA between 860° C. and 890° C. for a time between 100 s and 210 s, cooling the sheet to a quenching temperature QT between 220° C. and 330° C., from a temperature TC not less than 500° C. at a cooling speed not less than 15° C./s, heating the steel sheet during a time between 115 s and 240 s up to a first overaging temperature TOA1 higher than 380° C., then heating the sheet during a time between 300 s and 610 s up to a second overaging temperature TOA2 between 420° and 450° C., cooling the steel sheet to a temperature less than 100° C. at a cooling speed less than 5° C./s. The structure of the steel contains more than 80% of tempered martensite, more than 5% of retained austenite, less than 5% of ferrite, less than 5% of bainite and less than 6% of fresh martensite.

公开(公告)号：US11319620B2

公开(公告)日：2022-05-03

申请号：US16570313

申请日：2019-09-13

Applicant: ArcelorMittal

Inventor： Rongjie Song ,  Narayan S. Pottore

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

Abstract: A martensitic steel alloy is provided. The martensitic steel alloy includes carbon from 0.22 to 0.36 wt. %, manganese from 0.5% to 2.0% wt. %, and chromium in an amount less than 0.10 wt. %. and a carbon equivalent Ceq of less than 0.44 in which Ceq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15. Ceq is the carbon equivalent, C, Mn, Cr, Mo, V, Ni, and Cu are in wt. % of the elements in the alloy. The alloy has an ultimate tensile strength of at least 1700 MPa.

公开(公告)号：US20220090230A1

公开(公告)日：2022-03-24

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

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.

公开(公告)号：US11268766B2

公开(公告)日：2022-03-08

申请号：US16465913

申请日：2016-12-12

Applicant: ArcelorMittal

Inventor： Marco Picco ,  David Glijer ,  Daniel Gualtieri

IPC: F27D19/00 ,  F27D21/00 ,  F27B3/08 ,  F27B9/40

Abstract: A process for measuring wear of a refractory lining of a receptacle intended to contain molten metal, containing the following steps: scanning a first surface of the refractory lining using a first laser scanner in order to obtain a first initial set of data representative of the first surface, scanning a second surface of the refractory lining using a second laser scanner, distinct from the first laser scanner, in order to obtain a second initial set of data representative of the second surface, wherein the second surface includes a grey zone for the first laser scanner, the receptacle defining an obstacle located between the first laser scanner and the grey zone during scanning by the first laser scanner, and calculating a final set of data using the first initial set of data and the second initial set of data, the final set of data being representative of a surface of the refractory lining including the first surface and the second surface.

公开(公告)号：US20220062976A1

公开(公告)日：2022-03-03

申请号：US17299387

申请日：2018-12-13

Applicant: ArcelorMittal

Inventor： Thomas BRULLOT ,  Thomas LAVALARD ,  Jean-Marc HEMMEN ,  Jean-Noël FOULIGNY

IPC: B22D11/20 ,  B22D11/22

Abstract: A method to determine the crater end location of a cast metal product during its casting, the crater end location being the location at which the cast metal product becomes fully solidified. A continuous casting method and a continuous casting machine are also provided.

公开(公告)号：US11236413B2

公开(公告)日：2022-02-01

申请号：US16653183

申请日：2019-10-15

Applicant: ArcelorMittal

Inventor： Lydia Rachiele ,  Herve Derule ,  Delphine Thai

IPC: B21D39/00 ,  C23C2/06 ,  C23C2/26 ,  C23C22/05 ,  C23F11/14 ,  C25D3/22 ,  C25D5/48 ,  C23C22/78

Abstract: A coated metal sheet is provided. The coated metal sheet includes a steel substrate, a metal coating on at least one face of the steel substrate, the metal coating comprising at least 40% by weight of zinc; and a layer coating an outer surface of the metal coating, the layer including an amino acid in a neutral or salt form, the amino acid being selected from among alanine, arginine, aspartic acid, cysteine, glutamine, lysine, methionine, proline, serine, threonine, or of a mixture thereof, the amount of said amino acid or of said mixture being from 0.1 to 200 mg/m2, and optionally a base or a mixture of bases, or an acid or a mixture of acids.

公开(公告)号：US20220017985A1

公开(公告)日：2022-01-20

申请号：US17311808

申请日：2019-12-17

Applicant: ArcelorMittal

Inventor： Patrice ALEXANDRE ,  Magali BOUZAT ,  Anirban CHAKRABORTY ,  Hassan GHASSEMI-ARMAKI ,  Olga GIRINA ,  Ronan JACOLOT ,  Alexey KOLTSOV ,  Aude NADLER ,  Damon PANAHI ,  Michel SOLER

IPC: C21D9/46 ,  C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/22 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C21D1/18

Abstract: A cold rolled and heat-treated steel sheet having a composition including, by weight percent: C 0.3-0.4%, Mn 2.0-2.6%, Si: 0.8-1.6%, Al 0.01-0.6%, Mo 0.15-0.5%, Cr 0.3-1.0%, Nb≤0.06%, Ti≤0.06%, Ni≤0.8%, S≤0.010%, P≤0.020% and 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 15% and 30% of retained austenite, said retained austenite having a carbon content of at least 0.7%, between 70% and 85% of tempered martensite, at most 5% of fresh martensite and at most 5% of bainite. It also deals with a manufacturing method thereof.

公开(公告)号：US20220010778A1

公开(公告)日：2022-01-13

申请号：US17289574

申请日：2018-10-30

Applicant: ArcelorMittal

Inventor： Beatriz VENTURA GARCIA ,  Michaël GREMLING ,  Emilie DUPONT

IPC: F03D13/20

Abstract: A mast section (1) including a wall includes two tubular mast elements (14) stacked and arranged edge to edge at a joining plane (P), each element (14) comprising two wall segments (16) connected by segment connectors (26) extending along the longitudinal edges of the segments (16). The mast section (1) comprises element connectors (36) each extending across and connecting the elements (14) together. The element connectors (36) are arranged either on the inner surface (12) and outer surface (13) of the wall and the segment connectors (26) are arranged on the other surface, each element connector (36) extending at least partially opposite at least one of the segment connectors (26) in a radial direction of the mast section (1) such that the wall is placed between said element connector (36) and the segment connector (26).

公开(公告)号：US20220002835A1

公开(公告)日：2022-01-06

申请号：US17293108

申请日：2018-11-19

Applicant: ArcelorMittal

Inventor： Vikas Kanubhai PATEL ,  Dinesh PATEL ,  Alan POLING

IPC: C21D9/50 ,  C21D1/42 ,  B23K11/16

Abstract: A dual pass seam welding method for steels having a Ceq of greater than about 0.45. The first pass welds the immediately anneals the weld. On the second pass, the welder is disengaged, and the weld is subjected to a second anneal.