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.

公开(公告)号：US11826856B2

公开(公告)日：2023-11-28

申请号：US17153980

申请日：2021-01-21

Applicant: ArcelorMittal

Inventor： Francis Schmit ,  Rene Vierstraete ,  Qingdong Yin ,  Wolfram Ehling

IPC: B23K26/60 ,  B23K26/26 ,  B23K26/322 ,  B23K26/348 ,  B23K9/173 ,  B23K26/211 ,  B23K9/167 ,  B23K26/40 ,  B23K26/361 ,  B23K28/02 ,  B23K26/32 ,  B23K101/00 ,  B23K101/18 ,  B23K101/34 ,  B23K103/04 ,  B23K103/08 ,  B23K103/00

CPC classification number: B23K26/60 ,  B23K9/167 ,  B23K9/173 ,  B23K26/211 ,  B23K26/26 ,  B23K26/32 ,  B23K26/322 ,  B23K26/348 ,  B23K26/361 ,  B23K26/40 ,  B23K28/02 ,  B23K2101/006 ,  B23K2101/18 ,  B23K2101/34 ,  B23K2103/04 ,  B23K2103/08 ,  B23K2103/50

Abstract: A method for the preparation of steel sheets for fabricating a welded steel blank is provided. The method includes a step of removing at least part of the first and second metal alloy layers in first and second peripheral zones of pre-coated steel first and second sheets, respectively, by simultaneously ablating the first and second precoatings in the first and second peripheral zones of the pre-coated steel first and second sheets to define first and second ablation zones, the first and second peripheral zones being zones of the first and second principal faces closest to the median plane and located on either side of the median plane.

公开(公告)号：US20230366052A1

公开(公告)日：2023-11-16

申请号：US18030096

申请日：2021-10-05

Applicant: ArcelorMittal

Inventor： Benoît DRELON

IPC: C21C5/32 ,  C21C5/46

CPC classification number: C21C5/32 ,  C21C5/4606 ,  C21C2005/4626

Abstract: A lance (1) for blowing oxygen onto a bath of molten steel including a tip (15) provided with first oxygen ejector (16) and a distributor (17) provided with second ejector (18).

公开(公告)号：US11806808B2

公开(公告)日：2023-11-07

申请号：US16958405

申请日：2018-12-19

Applicant: ArcelorMittal

Inventor： René Vierstraete

IPC: B23K26/24 ,  B23K26/06 ,  B23K26/073 ,  B23K26/322 ,  B23K1/005 ,  B23K26/242 ,  B23K101/18 ,  B23K103/04

CPC classification number: B23K26/24 ,  B23K1/0056 ,  B23K26/0604 ,  B23K26/0608 ,  B23K26/073 ,  B23K26/0734 ,  B23K26/242 ,  B23K26/322 ,  B23K2101/18 ,  B23K2103/04

Abstract: A method for butt laser welding two metal sheets includes providing a first metal sheet and a second metal sheet and butt welding the metal sheets along a direction of welding. The butt welding step includes simultaneously generating a first front keyhole in the first metal sheet, generating a second front keyhole in the second metal sheet, and generating a back keyhole in the first and second metal sheets. The first and second front laser beams and the back laser beam are configured in such a manner that at each moment in time, a solid phase region and/or a liquid phase region of the metal sheets remains between the first front keyhole and the back keyhole and between the second front keyhole and the back keyhole.

公开(公告)号：US20230340630A1

公开(公告)日：2023-10-26

申请号：US18027303

申请日：2020-09-23

Applicant: ArcelorMittal

Inventor： Edgar Alejandro PACHON RODRIGUEZ ,  Virginie BLESSE ,  Doriane SERRA

IPC: C21D8/02 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/00 ,  C22C38/12 ,  C23C2/06 ,  C23C2/12 ,  C23C2/40

CPC classification number: C21D8/0236 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/001 ,  C22C38/002 ,  C22C38/12 ,  C21D8/0226 ,  C21D8/0273 ,  C23C2/06 ,  C23C2/12 ,  C23C2/40 ,  C21D2211/008 ,  C21D2211/002 ,  C21D2211/001 ,  C21D2211/005

Abstract: A cold rolled and coated steel sheet, the steel including 0.30%≤carbon 0.45%, 1≤manganese≤2.5%, 0.9%≤silicon≤2.2%, 0%≤aluminum≤0.09%, 0.001≤niobium≤0.09%, 0%≤phosphorus≤0.02%, 0%≤sulfur≤0.03%, 0%≤nitrogen≤0.09%, and optionally one or more of the following elements 0%≤molybdenum≤0.5%, 0%≤chromium≤0.6%, 0%≤titanium≤0.06%, 0%≤vanadium≤0.1%, 0%≤calcium≤0.005%, 0%≤boron≤0.010%, 0%≤Magnesium≤0.05%, 0%≤Zirconium≤0.05%, 0%≤Cerium≤0.1%, and the balance including iron and unavoidable impurities, the steel sheet having a microstructure comprising 35% to 65% Partitioned Martensite, 15% to 40% of Bainite, 14% to 30% of residual austenite, 4% to 15% of ferrite and 0% to 10% fresh martensite in area fractions, the balance being partitioned martensite.

公开(公告)号：US20230295782A1

公开(公告)日：2023-09-21

申请号：US18016837

申请日：2021-07-12

Applicant: ArcelorMittal

Inventor： Astrid PERLADE ,  Kangying ZHU ,  Coralie JUNG ,  Michael STOLTZ

IPC: C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  B32B15/01 ,  B32B7/05 ,  C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  F16B5/08

CPC classification number: C22C38/14 ,  B32B7/05 ,  B32B15/011 ,  C21D6/005 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  F16B5/08

Abstract: A cold rolled, annealed and partitioned steel sheet, made of a steel having a composition including, by weight percent: C: 0.05 - 0.18%, Mn: 6.0 - 11.0%, Mo: 0.05 - 0.5%, B: 0.0005 - 0.005%, S ≤ 0.010%, P ≤ 0.020%, N ≤ 0.008%, and including optionally one or more of the following elements, in weight percentage: Al

公开(公告)号：US20230295781A1

公开(公告)日：2023-09-21

申请号：US18016595

申请日：2021-07-12

Applicant: ArcelorMittal

Inventor： Astrid PERLADE ,  Kangying ZHU ,  Coralie JUNG

IPC: C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  B32B7/05 ,  B32B15/01

CPC classification number: C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/002 ,  C22C38/001 ,  C21D9/46 ,  C21D8/0205 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  B32B7/05 ,  B32B15/011 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008 ,  B32B2250/02 ,  B32B2311/30

Abstract: A cold rolled and annealed steel sheet, made of a steel having a composition including, by weight percent: C: 0.03-0.18%, Mn: 6.0-11.0%, Al: 0.2-3%, Mo: 0.05-0.5%, B: 0.0005-0.005%, S≤0.010%, P≤0.020%, N≤0.008%, and including optionally one or more of the following elements, in weight percentage: Si≤1.20%, Ti≤0.050%, Nb≤0.050%, Cr≤0.5%, V≤0.2%, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, the steel sheet having a microstructure including, in surface fraction, from 25% to 55% of retained austenite, from 5% to 50% of ferrite, from 5 to 70% of partitioned martensite less than 5% of fresh martensite, a carbon [C]A and manganese [Mn]A content in austenite, expressed in weight percent, such that the ratio ([C]A2×[Mn]A)/(C %2×Mn %) is from 3.0 to 8.0, C % and Mn % being the nominal values in carbon and manganese in weight % and an inhomogeneous repartition of manganese characterized by a manganese distribution with a slope above or equal to −40.

公开(公告)号：US20230295757A1

公开(公告)日：2023-09-21

申请号：US18016572

申请日：2021-07-12

Applicant: ArcelorMittal

Inventor： Astrid PERLADE ,  Kangying ZHU ,  Frédéric KEGEL

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

CPC classification number: C21D8/0236 ,  C21D8/0273 ,  C21D9/46 ,  C22C38/04 ,  C22C38/06 ,  C22C38/001 ,  C22C38/002 ,  C22C38/12 ,  C21D2211/005 ,  C21D2211/001 ,  C21D2211/008

Abstract: A cold rolled and double annealed steel sheet, made of a steel having a composition including, by weight percent: C: 0.03-0.18%, Mn: 6.0-11.0%, 0.2≤Al

公开(公告)号：US20230257839A1

公开(公告)日：2023-08-17

申请号：US18014434

申请日：2021-07-07

Applicant: ArcelorMittal

Inventor： Frédéric BONNET ,  Valérie DAESCHLER ,  Thierry MASTRORILLO

IPC: C21C7/00 ,  B22D11/00 ,  C21C7/06 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/46

CPC classification number: C21C7/0037 ,  B22D11/001 ,  C21C7/06 ,  C21C7/0087 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/002 ,  C22C38/001 ,  C22C38/46 ,  C21C2007/0018

Abstract: A method of casting a steel semi-product from a liquid steel, the steel semi-product having a targeted composition in titanium of at least 3.5% in weight.

公开(公告)号：US11725255B2

公开(公告)日：2023-08-15

申请号：US17311677

申请日：2018-12-18

Applicant: ArcelorMittal

Inventor： Blandine Remy ,  Thierry Sturel ,  Emmanuel Lucas ,  Gianni Boi

IPC: B21D22/02 ,  B32B15/01 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/50 ,  C22C38/54 ,  C21D9/46 ,  C21D6/00 ,  C21D8/02

CPC classification number: C21D9/46 ,  B21D22/02 ,  B32B15/012 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0263 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/50 ,  C22C38/54 ,  C21D2211/002 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/008

Abstract: A press hardened coated steel part with high resistance to delayed fracture, the coating containing (Fex—Aly) intermetallic compounds resulting from the diffusion of iron into an aluminum or an aluminum-based alloy, or an aluminum alloy of a precoating, wherein the chemical composition of the steel includes, in weight: 0.16%≤C≤0.42%, 0.1%≤Mn≤3%, 0.07%≤Si≤1.60%, 0.002%≤Al≤0.070%, 0.02%≤Cr≤1.0%, 0.0005≤B≤0.005%, 0.002%≤Mg≤0.007%, 0.002%≤Ti≤0.11%, 0.0008%≤O≤0.005%, wherein (Ti)×(O)2×107≤2, 0.001%≤N≤0.007%, 0.001%≤S≤0.005%, 0.001%≤P≤0.025% and optionally one or more elements selected from the list of: 0.005%≤Ni≤0.23%, 0.005%≤Nb≤0.060%, the remainder being Fe and unavoidable impurities, and wherein the microstructure includes at least 95% martensite.