公开(公告)号：US12227822B2

公开(公告)日：2025-02-18

申请号：US18142197

申请日：2023-05-02

Applicant: ArcelorMittal

Inventor： Michel Bordignon ,  Jonas Staudte

IPC: C22C38/02 ,  C21D1/26 ,  C22C38/04 ,  C22C38/06 ,  C23C2/02 ,  C23C2/06 ,  C25D3/30

Abstract: A hot-dip coated steel substrate coated with a layer of Sn directly topped by a zinc or an aluminum based coating is provided, the steel substrate having the following chemical composition in weight percent: 0.10≤C≤0.4%, 1.2≤Mn≤6.0%, 0.3≤Si≤2.5%, Al

公开(公告)号：US10570472B2

公开(公告)日：2020-02-25

申请号：US15102118

申请日：2013-12-10

Applicant: ARCELORMITTAL

Inventor： John Rotole ,  Jonas Staudte ,  Jean-Michel Mataigne

IPC: C21D9/46 ,  C23C8/14 ,  C22C38/38 ,  C21D1/26 ,  C23C2/06 ,  C23C2/28 ,  C23C8/18 ,  C21D1/68 ,  C21D8/02 ,  C23C2/02 ,  C23C8/80 ,  C21D6/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C23C2/40 ,  C21D1/76 ,  C21D9/56

Abstract: A method of annealing of steel sheets is provided which includes a first step consisting in fully oxidizing the surface of such steel sheet thus creating a fully oxided surface layer, a second step consisting in selectively oxidizing elements other than iron of such steel, in an area extending under said fully oxided layer, thus creating a selectively oxided internal layer and a third step consisting in fully reducing said fully oxided surface layer.

公开(公告)号：US10400315B2

公开(公告)日：2019-09-03

申请号：US14901931

申请日：2014-07-03

Applicant: ArcelorMittal Investigación y Desarrollo SL

Inventor： Franco Del Frate ,  Jean-Michel Mataigne ,  Jonas Staudte ,  Astrid Perlade ,  Ian Alberto Zuazo-Rodriguez

IPC: C22C38/38 ,  C22C38/24 ,  C22C38/28 ,  C22C38/06 ,  C22C38/26 ,  C22C38/02 ,  C22C38/00 ,  C23C2/02 ,  C23C2/06 ,  C23C14/24 ,  C23C14/02 ,  C23C14/14 ,  C25D3/22 ,  C25D5/36 ,  C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  B22D11/00 ,  C23C30/00 ,  C23C2/26 ,  C23C28/02 ,  C23C28/00 ,  C23C2/04 ,  C23C2/12 ,  C23C14/58 ,  B32B15/01 ,  B32B15/04 ,  C23C14/16 ,  C22C38/44 ,  C22C38/34 ,  C22C38/18 ,  C22C38/50 ,  C22C38/48 ,  C22C38/58 ,  C22C38/14 ,  C22C38/12 ,  C22C38/04 ,  C22C38/46 ,  B32B15/18 ,  C21D1/74 ,  C21D9/52 ,  C23C2/28 ,  C23C2/40

Abstract: A cold rolled and hot dip coated steel sheet presenting a tensile strength above 1000−50×Al MPa, a uniform elongation above 15% and a low density is provided. The steel includes, by weight percent: 0.1≤C≤0.5%, 3.5≤Mn≤10.0%, 0≤Al≤9.0%, Si≤5.0%, Ti≤0.2%, V≤0.2%, Nb≤0.2%, S≤0.004%, P≤0.025%, 0.5≤Si+Al≤9.0%, B≤0.0035, Cr≤1%, The balance being Fe and impurities and the microstructure containing 25% to 90% of ferrite, 10% to 50% of austenite, kappa precipitates lower than 5% and martensite lower than 25%. The steel is able to be coated using total oxidation.

公开(公告)号：US11131005B2

公开(公告)日：2021-09-28

申请号：US16094849

申请日：2017-04-18

Applicant: ArcelorMittal

Inventor： Jonas Staudte ,  Hubert Saint-Raymond ,  Michel Roger Louis Bordignon ,  Thierry Hourman ,  Pauline Briault

IPC: C21D9/56 ,  C23C2/02 ,  C23C2/40 ,  C21D1/76 ,  C21D9/46 ,  C21D9/573 ,  C23C2/06 ,  C23F17/00 ,  C23C2/26 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32

Abstract: A method for producing a metallic coated steel sheet is provided. The method includes continuously annealing a steel sheet in a continuous annealing furnace and hot dip coating the steel sheet.

公开(公告)号：US20160017452A1

公开(公告)日：2016-01-21

申请号：US14426523

申请日：2013-09-06

Applicant: ARCELORMITTAL INVESTIGACIÓN Y DESARROLLO SL

Inventor： Juan David Puerta Velasquez ,  Jonas Staudte ,  Pascal Drillet

IPC: C21D8/02 ,  C22C38/28 ,  C22C38/06 ,  C22C38/04 ,  C23F17/00 ,  C22C38/00 ,  C21D6/00 ,  C23C2/12 ,  C23C2/06 ,  C23C2/28 ,  C22C38/32 ,  C22C38/02

CPC classification number: C21D8/0278 ,  B32B15/012 ,  B32B15/013 ,  C21D1/34 ,  C21D1/52 ,  C21D1/673 ,  C21D1/74 ,  C21D1/76 ,  C21D3/04 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0236 ,  C21D8/0257 ,  C21D8/0457 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/02 ,  C23C2/06 ,  C23C2/12 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40

Abstract: This invention relates to a cold-rolled sheet that is annealed and pre-coated for the fabrication of press hardened parts, composed of a steel substrate for heat treatment with a carbon content C0 between 0.07% and 0.5%, whereby this content is expressed by weight, and a metal pre-coating on at least the two principal faces of the steel substrate, characterized in that the substrate comprises a decarburized area on the surface of each of the two principal faces, whereby the depth p50% of the decarburized area is between 6 and 30 micrometers, whereby p50% is the depth at which the carbon content is equal to 50% of the content C0, and in that the sheet does not contain a layer of iron oxide between the substrate and the metal pre-coating.

Abstract translation: 本发明涉及一种用于制造加压硬化部件的退火和预涂层的冷轧板，其由碳含量C0为0.07％至0.5％的热处理用钢基材组成，由此该含量由 并且在所述钢基材的至少两个主面上进行金属预涂布，其特征在于，所述基板包括在所述两个主面中的每一个的表面上的脱碳区域，由此所述脱碳区域的深度p50％ 在6至30微米之间，其中p 50％是碳含量等于含量C 0的50％的深度，并且该片材在基材和金属预涂层之间不含有氧化铁层。

公开(公告)号：US11674209B2

公开(公告)日：2023-06-13

申请号：US16769912

申请日：2018-10-22

Applicant: ArcelorMittal

Inventor： Michel Bordignon ,  Jonas Staudte

IPC: C21D1/26 ,  C23C2/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/06 ,  C25D3/30

CPC classification number: C23C2/02 ,  C21D1/26 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/06 ,  C25D3/30

Abstract: A hot-dip coated steel substrate coated with a layer of Sn directly topped by a zinc or an aluminum based coating is provided, the steel substrate having the following chemical composition in weight percent:

0.10≤C≤0.4%,

1.2≤Mn≤6.0%,

0.3≤Si≤2.5%,

Al≤2.0%,

and on a purely optional basis, one or more elements such as

P

公开(公告)号：US09957582B2

公开(公告)日：2018-05-01

申请号：US15609841

申请日：2017-05-31

Applicant: ArcelorMittal

Inventor： Juan David Puerta Velasquez ,  Jonas Staudte ,  Pascal Drillet

IPC: C22C38/02 ,  C22C38/04 ,  C22C38/32 ,  C21D8/02 ,  B32B15/01 ,  C23C2/28 ,  C22C38/28 ,  C22C38/06 ,  C22C38/00 ,  C21D6/00 ,  C23C2/12 ,  C23C2/06

CPC classification number: C21D8/0278 ,  B32B15/012 ,  B32B15/013 ,  C21D1/34 ,  C21D1/52 ,  C21D1/673 ,  C21D1/74 ,  C21D1/76 ,  C21D3/04 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0236 ,  C21D8/0257 ,  C21D8/0457 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/02 ,  C23C2/06 ,  C23C2/12 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40

Abstract: A cold-rolled sheet is provided. The cold-rolled sheet includes a steel substrate with a carbon content C0 between 0.07% and 0.5%, expressed by weight, and a metal pre-coating on at least the two principal faces of the steel substrate. The substrate has a decarburized area on the surface of each of the two principal faces. The depth p50% of the decarburized area is between 6 and 30 micrometers, and p50% is the depth at which the carbon content is equal to 50% of the content C0. The sheet does not contain a layer of iron oxide between the substrate and the metal pre-coating.

公开(公告)号：US09909194B2

公开(公告)日：2018-03-06

申请号：US14426523

申请日：2013-09-06

Applicant: ARCELORMITTAL INVESTIGACIÓN Y DESARROLLO, S.L.

Inventor： Juan David Puerta Velasquez ,  Jonas Staudte ,  Pascal Drillet

IPC: C21D8/02 ,  C22C38/32 ,  C22C38/28 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D6/00 ,  C23C2/12 ,  C23C2/06 ,  C23C2/28 ,  B32B15/01

CPC classification number: C21D8/0278 ,  B32B15/012 ,  B32B15/013 ,  C21D1/34 ,  C21D1/52 ,  C21D1/673 ,  C21D1/74 ,  C21D1/76 ,  C21D3/04 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0236 ,  C21D8/0257 ,  C21D8/0457 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/02 ,  C23C2/06 ,  C23C2/12 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40

Abstract: A cold-rolled sheet is provided. The cold-rolled sheet is annealed and pre-coated for the fabrication of press hardened parts, composed of a steel substrate for heat treatment with a carbon content C0 between 0.07% and 0.5%, expressed by weight, and a metal pre-coating on at least the two principal faces of the steel substrate. The substrate comprises a decarburized area on the surface of each of the two principal faces. The depth p50% of the decarburized area is between 6 and 30 micrometers, and p50% is the depth at which the carbon content is equal to 50% of the content C0. The sheet does not contain a layer of iron oxide between the substrate and the metal pre-coating. Processes are also provided.