公开(公告)号：US20180202017A1

公开(公告)日：2018-07-19

申请号：US15741290

申请日：2016-06-10

Applicant: ArcelorMittal

Inventor： Pascal Drillet ,  Maria Poirier ,  Sujay Sarkar

IPC: C21D9/46 ,  C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/22 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C23C2/12 ,  B32B15/01 ,  B23K26/21 ,  B21B1/22 ,  B21D22/02

Abstract: A press hardened steel part is provided. The steel of the part has a chemical composition including, in weight: 0.062%≤C≤0.095%, 1.4%≤Mn≤1.9%, 0.2%≤Si≤0.5%, 0.020%≤Al≤0.070%, 0.02%≤Cr≤0.1%, wherein: 1.5%≤(C+Mn+Si+Cr)≤2.7%, 0.040%≤Nb≤0.060%, 3.4×N≤Ti≤8×N wherein: 0.044%≤(Nb+Ti)≤0.090%, 0.0005≤B≤0.004%, 0.001%≤N≤0.009%, 0.0005%≤S≤0.003%, 0.001%≤P≤0.020%, optionally: 0.0001%≤Ca≤0.003%, and the remainder being Fe and unavoidable impurities. The microstructure of the part includes, in a majority of the part, in surface fractions: less than 40% of bainite, less than 5% of austenite, less than 5% of ferrite, and a remainder being martensite. The martensite is fresh martensite and self-tempered martensite.

公开(公告)号：US20180152136A1

公开(公告)日：2018-05-31

申请号：US15577008

申请日：2015-05-26

Applicant: ArcelorMittal

Inventor： Renaud VIGNAL ,  Laurent GERON

IPC: H02S40/34 ,  H02S40/36

CPC classification number: H02S40/34 ,  H02S40/36 ,  Y02B10/12

Abstract: The present invention provides a building exterior cladding. The panel includes an upper overlap area, a lower overlap area and a central part, covered by at least one photovoltaic module. A perforation is located in the lower overlap area and traversed by an electrical cable connecting one of two electrical poles of the photovoltaic module to an electrical plug located on the reverse side of the panel in the lower overlap area. An opening is located in the upper overlap area, into which is inserted an electrical junction box connected to another electrical pole of the photovoltaic module by an electrical cable. The junction box includes: a base, a lateral wall, including on its external surface, a peripheral shoulder to hold the box in place in the opening, an access door located on the lateral wall of the junction box, a cable outlet, an internal cavity delimited by the base and the wall, including an electrical terminal with an axis perpendicular to the base, and an electrical switch connecting the electrical terminal to the cable outlet and located facing the access door. The invention further provides an associated electrical junction box and the associated electrical connection assembly.

公开(公告)号：US20180148806A1

公开(公告)日：2018-05-31

申请号：US15879944

申请日：2018-01-25

Applicant: ArcelorMittal France

Inventor： Pascal DRILLET ,  Damien ORMSTON

IPC: C21D8/02 ,  C23C2/12 ,  C23C2/06 ,  C21D6/00 ,  C23C2/02 ,  C22C38/38 ,  C22C38/26 ,  C22C38/24 ,  C22C38/22 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D9/46

CPC classification number: C21D8/0263 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0226 ,  C21D9/46 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/38 ,  C23C2/02 ,  C23C2/06 ,  C23C2/12 ,  Y10T428/12757 ,  Y10T428/12799

Abstract: A hot-rolled steel sheet having a tensile strength greater than 800 MPa and an elongation at break greater than 10% is provided. A composition of the steel includes, the contents being expressed by weight: 0.050%≤C≤0.090%, 1%≤Mn≤2%, 0.015%≤Al≤0.050%, 0.1%≤Si≤0.3%, 0.10%≤Mo≤0.40%, S≤0.010%, P≤0.025%, 0.003%≤N≤0.009%, 0.12%≤V≤0.22%, Ti≤0.005%, Nb≤0.020% and optionally, Cr≤0.45%. A balance of the composition includes iron and inevitable impurities resulting from the smelting. A microstructure of the sheet or part includes, as a surface fraction, at least 80% upper bainite, and a remainder includes lower bainite, martensite and residual austenite. A sum of the martensite and residual austenite, as a surface fraction, is less than 5%.

公开(公告)号：US09976203B2

公开(公告)日：2018-05-22

申请号：US13747451

申请日：2013-01-22

Applicant: ArcelorMittal

Inventor： Hyun Jo Jun ,  Narayan Subramaniam Pottore ,  Nina Michailovna Fonstein ,  Oleg N. Yakubovsky

IPC: C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/08 ,  C22C38/00

CPC classification number: C22C38/14 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12

Abstract: A cold rolled, annealed TRIP steel sheet which has a composition including (in wt. %): C: 0.1-0.3; Mn: 4-10, Al: 0.05-5, Si: 0.05-5; and Nb: 0.008-0.1, the remainder being iron and inevitable residuals. The cold rolled sheet has an ultimate tensile strength of at least 1000 MPa, and a total elongation of at least 15%. The cold rolled sheet may have at least 20% retained austenite in its microstructure and may have greater than 50% lath-type annealed ferrite structure. The cold rolled sheet may have an ultra fine grain size of less than 5 micron for the retained austenite and ferrite.

公开(公告)号：US20180057909A1

公开(公告)日：2018-03-01

申请号：US15560468

申请日：2016-03-23

Applicant: ArcelorMittal

Inventor： Marie-Thérèse Perrot-Simonetta ,  Bernard Resiak ,  Ulrich Voll

IPC: C21D9/52 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/06 ,  C21D6/00 ,  C21D1/18

CPC classification number: C21D9/525 ,  C21D1/18 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0263 ,  C21D8/065 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

Abstract: The present invention provides a part having a composition including, with the contents being expressed in weight-percent, 0.10≦C≦0.30, 1.6≦Mn≦2.1, 0.5≦Cr≦1.7, 0.5≦Si≦1.0, 0.065≦Nb≦0.15, 0.0010≦B≦0.0050, 0.0010≦N≦0.0130, 0≦Al≦0.060, 0≦Mo≦1.00, 0≦Ni≦1.0, 0.01≦Ti≦0.07, 0≦V≦0.3, 0≦P≦0.050, 0.01≦S≦0.1, 0≦Cu≦0.5, 0≦Sn≦0.1. A balance of the composition includes iron and unavoidable impurities resulting from the production method. The microstructure includes, in surface proportions, from 100% to 70% bainite, less than 30% residual austenite, and less than 5% ferrite. A manufacturing method is also provided.

公开(公告)号：US20180010220A1

公开(公告)日：2018-01-11

申请号：US15711335

申请日：2017-09-21

Applicant: ARCELORMITTAL

Inventor： Sebastien Allain ,  Audrey Couturier ,  Thierry Iung ,  Christine Colin

IPC: C22C38/02 ,  C22C38/34 ,  C22C38/22 ,  C22C38/12 ,  C21D9/32 ,  C21D1/19 ,  C22C38/04 ,  C21D8/02 ,  C21D9/46 ,  C22C38/38 ,  C22C38/06

CPC classification number: C22C38/02 ,  C21D1/19 ,  C21D8/02 ,  C21D9/32 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/34 ,  C22C38/38

Abstract: The invention relates to a hot-rolled steel sheet having a tensile strength of greater than 1200 MPa, an Re/Rm ratio of less than 0.75 and an elongation at break of greater than 10%, the composition of which contains, the contents being expressed by weight: 0.10%≦C≦0.25%; 1%≦Mn≦3%; Al≧0.015%; Si≦1.985%; Mo≦0.30%; Cr≦1.5%; S≦0.015%; P≦0.1%; Co≦1.5%; B≦0.005%; it being understood that 1%≦Si+Al≦2%; Cr +(3×Mo)≦0.3%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the microstructure of the steel consisting of at least 75% bainite, residual austenite in an amount equal to or greater than 5% and martensite in an amount equal to or greater than 2%.

公开(公告)号：US20170314087A1

公开(公告)日：2017-11-02

申请号：US15520243

申请日：2015-10-20

Applicant: ArcelorMittal

Inventor： Elke LEUNIS ,  Tom VAN DE PUTTE ,  Sigrid JACOBS ,  Wahib SAIKALY

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

CPC classification number: C21D8/1222 ,  C21D8/12 ,  C21D8/1233 ,  C21D8/1244 ,  C21D8/1272 ,  C21D9/46 ,  C21D9/56 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/004 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/38 ,  H01F1/16

Abstract: A method of production non grain-oriented Fe—Si steel sheet is provided. The method includes the steps of melting a steel composition that contains in weight percentage: C≦0.006, 2.0≦Si≦5.0, 0.1≦Al≦3.0, 0.1≦Mn≦3.0, N≦0.006, 0.04≦Sn≦0.2, S≦0.005, P≦0.2, Ti≦0.01, the balance being Fe and other inevitable impurities, casting said melt into a slab, reheating said slab, hot rolling said slab, coiling said hot rolled steel, optionally annealing the hot rolled steel, cold rolling, annealing and cooling the cold rolled steel down to room temperature.

公开(公告)号：US20170274851A1

公开(公告)日：2017-09-28

申请号：US15511099

申请日：2015-09-22

Applicant: ArcelorMittal

Inventor： Nicolas Schneider ,  Elie Gibeau ,  Yves Drouadaine ,  Arnaud Cocu ,  Gilson Donya

IPC: B60R19/18 ,  B60R19/34

CPC classification number: B60R19/18 ,  B60R19/24 ,  B60R19/34 ,  B60R2019/1806 ,  B60R2019/1813 ,  B60R2019/1826 ,  B60R2019/186 ,  B60R2019/247

Abstract: A bumper-reinforcing system (1) intended for a motor vehicle includes: a bumper beam (2) with a single-piece elongated profile with a closed cross section and including a center zone (21) extending at least over part of the entire width of the bumper beam and an end zone (22) at each extremity of the bumper beam, two bumper fasteners (3) connected to the rear side of the bumper beam (2) at the intersection between the center zone (21) and the end zone (22) of the bumper beam (2), two reinforcing tubes (4) connected by their first end to the rear side of the end zone (22) of the bumper beam (2), extending from the bumper beam (2) so as to form an angle α below 45° with the vertical plane of symmetry of the bumper beam and suited to be connected by their other end on the front rail of the vehicle for which the bumper-reinforcing system (1) is provided, and two covers (5) with a single-piece elongated profile with an open cross section, in contact with the rear side of the end zone (22) of the bumper beam (2) and extending at least from the first end of one of the reinforcing tubes (4) to one of the bumper fasteners (3).

公开(公告)号：US09765415B2

公开(公告)日：2017-09-19

申请号：US15374827

申请日：2016-12-09

Applicant: ArcelorMittal France

Inventor： Astrid Perlade ,  Olivier Bouaziz ,  Xavier Garat ,  Josée Drillet ,  Jean-Louis Uriarte

IPC: C21D9/46 ,  C21D8/02 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

CPC classification number: C21D9/46 ,  C21D6/005 ,  C21D8/021 ,  C21D8/0215 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0247 ,  C21D8/041 ,  C21D8/0415 ,  C21D8/0426 ,  C21D8/0436 ,  C21D2211/005 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50

Abstract: A cold-rolled and annealed ferritic steel sheet is provided. The steel has a composition comprising, expressed by weight: 0.001≦C≦0.15%; Mn≦1%; Si≦1.5%; 7.5%≦AI≦10%; 0.020%≦Ti≦0.5%; S≦0.050%; and P≦0.1%. A balance of the composition includes iron and inevitable impurities resulting from the smelting. The structure includes kappa (κ) precipitates and equiaxed ferrite, an average grain size dα of the equiaxed ferrite is less than 50 microns, and a linear fraction f of intergranular κ precipitates is less than 30%. The linear fraction f is defined by f = Σ ( A ) ⁢ di Σ ( A ) ⁢ Li . Σ(A)di denotes the total length of grain boundaries containing κ precipitates relative to an area (A) and Σ(A)Li denotes the total length of the grain boundaries relative to the area (A). A content of carbon in solid solution is less than 0.005% by weight, and the cold-rolled and annealed ferritic steel sheet has a thickness between 0.6 mm and 1.5 mm. A skin part or structural part for the automotive field is also provided.

公开(公告)号：US20170253941A1

公开(公告)日：2017-09-07

申请号：US15500090

申请日：2015-07-29

Applicant: ArcelorMittal

Inventor： Sebastian Cobo ,  Juan David Puerta Velasquez ,  Martin Beauvais ,  Catherine Vinci

IPC: C21D9/46 ,  C21D1/673 ,  C21D1/18 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23F17/00 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/44 ,  C22C38/00 ,  B21D22/02 ,  C21D8/02

Abstract: The present invention provides a rolled steel sheet, for press hardening, for which the chemical composition includes, with contents expressed by weight, 0.24%≦C≦0.38%, 0.40%≦Mn≦3%, 0.10%≦Si≦0.70%, 0.015%≦Al≦0.070%, 0%≦Cr≦2%, 0.25%≦Ni≦2%, 0.015%≦Ti≦0.10%, 0%≦Nb≦0.060%, 0.0005%≦B≦0.0040%, 0.003%≦N≦0.010%, 0.0001%≦S≦0.005%, 0.0001%≦P≦0.025%, it being understood that the titanium and nitrogen content satisfy: Ti/N>3.42, and that the carbon, manganese, chromium and silicon content satisfy: 2.6   C + Mn 5.3 + Cr 13 + Si 15 ≥ 1.1  % , with the chemical composition optionally including one or more of the following elements: 0.05%≦Mo≦0.65%, 0.001%≦W≦0.30%, 0.0005%≦Ca≦0.005%, with the remainder made up of iron and inevitable impurities coming from preparation. The sheet includes a nickel content Nisurf at any point of the steel near the surface of said sheet over a depth Δ, such that Nisurf>Ninom, where Ninom designates the nominal nickel content of the steel, and such that Nimax designates the maximum nickel content within Δ: ( Ni max + Ni nom ) 2 × ( Δ ) ≥ 0.6 and such that: ( Ni max + Ni nom ) Δ ≥ 0.01 , with the depth Δ expressed in microns and the Nimax and Ninom contents expressed in percentages by weight.