公开(公告)号：US10480554B2

公开(公告)日：2019-11-19

申请号：US16414857

申请日：2019-05-17

Applicant: ArcelorMittal France

Inventor： Jean-Francois Canourgues ,  Aurelien Pic ,  Pascal Verrier ,  Rene Vierstraete ,  Wolfram Ehling ,  Bernd Thommes

IPC: F16B5/08 ,  B23K9/23 ,  B23K33/00 ,  C23C2/26 ,  C23C28/02 ,  B23K26/32 ,  B23K103/08 ,  B23K101/18 ,  B23K101/34 ,  B23K103/04 ,  B23K103/10 ,  B23K103/00

Abstract: A formed steel part includes a first steel plate having a first base, a first intermetallic alloy layer on the first base and a first metal alloy layer on the first intermetallic alloy layer, the first steel part having a first area without the first metal alloy layer and having at least part of the first intermetallic alloy layer; and a second steel plate having a second base, a second intermetallic alloy layer on the second base and a second metal alloy layer on the second intermetallic alloy layer, the second steel part having a second area without the second metal alloy layer and having at least part of the second intermetallic alloy layer in the second area. The first and second steel plates are joined together. The formed steel part may also include a butt-weld joining the first and second steel plates.

公开(公告)号：US10473130B2

公开(公告)日：2019-11-12

申请号：US16413901

申请日：2019-05-16

Applicant: ArcelorMittal France

Inventor： Jean-Francois Canourgues ,  Aurelien Pic ,  Pascal Verrier ,  Rene Vierstraete ,  Wolfram Ehling ,  Bernd Thommes

IPC: F16B5/08

Abstract: A formed steel part includes a first steel plate having a first base, a first intermetallic alloy layer on the first base and a first metal alloy layer on the first intermetallic alloy layer, the first steel part having a first area without the first metal alloy layer and having at least part of the first intermetallic alloy layer; and a second steel plate having a second base, a second intermetallic alloy layer on the second base and a second metal alloy layer on the second intermetallic alloy layer, the second steel part having a second area without the second metal alloy layer and having at least part of the second intermetallic alloy layer in the second area. The first and second steel plates are joined together. The formed steel part may also include a butt-weld joining the first and second steel plates.

公开(公告)号：US09718125B2

公开(公告)日：2017-08-01

申请号：US14513606

申请日：2014-10-14

Applicant: ARCELORMITTAL FRANCE ,  Laure Cala

Inventor： Frederic Bonnet ,  Olivier Bouaziz ,  Jean-Claude Chevallot

IPC: C22C38/02 ,  C22C38/04 ,  C22C38/14 ,  C22C38/28 ,  C22C38/32 ,  C22C38/50 ,  C22C38/54 ,  C21D7/00 ,  C21D7/02 ,  C21D7/13 ,  B22D25/06 ,  B32B15/01 ,  B23P17/04 ,  C22C38/06 ,  B22D11/00 ,  C22C38/00 ,  B22D11/06 ,  C21D8/02

CPC classification number: B22D25/06 ,  B22D11/001 ,  B22D11/0622 ,  B23P17/04 ,  B32B15/011 ,  C21D7/00 ,  C21D8/021 ,  C21D8/0215 ,  C21D8/0247 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  Y10T428/12965

Abstract: The invention relates to a steel plate, the chemical composition of which comprises, the contents being expressed by weight: 0.010%≦C≦0.20%, 0.06%≦Mn≦3%, Si≦1.5%, 0.005%≦Al≦1.5%, S≦0.030%, P≦0.040%, 2.5%≦Ti≦7.2%, (0.45×Ti)−0.35%≦B≦(0.45×Ti)+0.70%, and optionally one or more elements chosen from: Ni≦1%, Mo≦1%, Cr≦3%, Nb≦0.1%, V≦0.1%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting.

公开(公告)号：US20160008924A1

公开(公告)日：2016-01-14

申请号：US14865721

申请日：2015-09-25

Applicant: ArcelorMittal France

Inventor： Jean-Francois CANOURGUES ,  Aurelien PIC ,  Pascal VERRIER ,  Rene VIERSTRAETE ,  Wolfram EHLING ,  Bernd THOMMES

IPC: B23K26/362 ,  C22C38/28 ,  C22C38/06 ,  C23C2/12 ,  C22C38/02 ,  C22C38/00 ,  C22C21/02 ,  B23K26/40 ,  C22C38/32 ,  C22C38/04

CPC classification number: B23K33/00 ,  B23K1/14 ,  B23K9/0026 ,  B23K9/02 ,  B23K9/025 ,  B23K9/23 ,  B23K10/02 ,  B23K26/21 ,  B23K26/24 ,  B23K26/26 ,  B23K26/32 ,  B23K26/322 ,  B23K26/36 ,  B23K26/362 ,  B23K26/40 ,  B23K31/02 ,  B23K37/003 ,  B23K2101/18 ,  B23K2101/34 ,  B23K2103/04 ,  B23K2103/08 ,  B23K2103/10 ,  B23K2103/50 ,  B32B15/012 ,  C21D1/00 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D9/50 ,  C21D2211/008 ,  C22C21/02 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/28 ,  C22C38/32 ,  C23C2/04 ,  C23C2/12 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40 ,  C23C10/22 ,  C23C28/021 ,  F16B5/08 ,  Y10T428/12229 ,  Y10T428/12271 ,  Y10T428/12389 ,  Y10T428/12396 ,  Y10T428/12486 ,  Y10T428/12493 ,  Y10T428/12757 ,  Y10T428/12764 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/2495 ,  Y10T428/24967 ,  Y10T428/24975 ,  Y10T428/26 ,  Y10T428/263 ,  Y10T428/264 ,  Y10T428/265

Abstract: A method of fabricating a precoated steel plate, the method including coating a steel plate by dipping the steel plate in a molten bath to obtain a precoat upon the steel plate, wherein the precoat includes an intermetallic alloy layer and a metal alloy layer. The intermetallic alloy layer is topped by the metal alloy layer. On at least one face of the plate, the metal alloy layer is removed in an area at a periphery of the plate using a laser beam, while leaving at least part of the intermetallic alloy layer in the area. The at least part of the intermetallic layer in the area has a thickness between 3 and 10 micrometers thick.

Abstract translation: 一种预涂钢板的制造方法，其特征在于，通过将钢板浸渍在熔融浴中来涂覆钢板，得到钢板上的预涂层，其中预涂层包括金属间合金层和金属合金层。 金属间合金层由金属合金层顶上。 在板的至少一个面上，使用激光束在板的周围的区域中去除金属合金层，同时在区域中留下至少一部分金属间合金层。 该区域中的金属间化合物层的至少一部分具有3至10微米厚的厚度。

公开(公告)号：USRE44940E1

公开(公告)日：2014-06-10

申请号：US13863100

申请日：2013-04-15

Applicant: Arcelormittal France ,  Arcelormittal Atlantique Et Lorraine

Inventor： Jean-Pierre Laurent ,  Jean-Paul Hennechart ,  Dominique Spehner ,  Jacques Devroc

IPC: C21D8/02 ,  B32B15/08 ,  C22C38/06 ,  C22C38/18

CPC classification number: C22C38/32 ,  C21D8/0278 ,  C22C38/38

Abstract: Hot-rolled steel sheet which then can be cold-rolled, coated, the steel in the sheet having the following composition by weight: 0.15%

Abstract translation: 热轧钢板，然后可以进行冷轧，涂层，具有以下重量组成的片材中的钢：0.15％<碳<0.5％0.5％<锰<3％0.1％<硅<0.5％0.01％ <铬<1％钛<0.2％铝<0.1％磷<0.1％硫<0.05％0.0005％<硼<0.08％，其余为加工中固有的铁和杂质，热处理后确保极高的机械阻力 和铝基涂层，确保高耐腐蚀性。

公开(公告)号：US11154950B2

公开(公告)日：2021-10-26

申请号：US16828672

申请日：2020-03-24

Applicant: ArcelorMittal France

Inventor： Jean-Francois Canourgues ,  Aurelien Pic ,  Pascal Verrier ,  Rene Vierstraete ,  Wolfram Ehling ,  Bernd Thommes

IPC: B23K26/32 ,  B23K9/23 ,  B23K33/00 ,  C23C2/26 ,  C23C28/02 ,  F16B5/08 ,  B32B15/01 ,  C21D1/00 ,  C21D6/00 ,  C21D9/50 ,  C22C21/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/28 ,  C22C38/32 ,  B23K103/08 ,  B23K103/10 ,  B23K103/00 ,  B23K101/18 ,  B23K103/04 ,  B23K101/34

Abstract: A method for creating a welded steel part includes providing a first steel plate having a first base, a first intermetallic alloy layer on the first base and a first metal alloy layer on the first intermetallic alloy layer; providing a second steel plate having a second base, a second intermetallic alloy layer on the second base and a second metal alloy layer on the second intermetallic alloy layer; butt welding the first and second steel plates at a weld so as to melt material from at least the first base, the first intermetallic alloy layer, the second base and the second intermetallic layer to form a molten weld material; austenizing the welded steel plates at a temperature between Ac1 and Ac3+100 degrees C. for a time greater than or equal to 20 seconds; and cooling the welded steel plates so as to render a uniform microstructure to the weld.

公开(公告)号：US10702916B2

公开(公告)日：2020-07-07

申请号：US15598951

申请日：2017-05-18

Applicant: ArcelorMittal France

Inventor： Frederic Bonnet ,  Olivier Bouaziz ,  Jean-Claude Chevallot

IPC: C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D8/02 ,  C21D7/00 ,  B22D25/06 ,  B32B15/01 ,  B23P17/04 ,  C22C38/14 ,  B22D11/00 ,  C22C38/00 ,  B22D11/06

Abstract: A steel plate, the chemical composition of which includes, the contents being expressed by weight: 0.010%≤C≤0.20%, 0.06%≤Mn≤3%, Si≤1.5%, 0.005%≤Al≤1.5%, S≤0.030%, P≤0.040%, 2.5%≤Ti≤7.2%, (0.45×Ti)−0.35%≤B≤(0.45×Ti)+0.70%, and optionally one or more elements chosen from: Ni≤1%, Mo≤1%, Cr≤31, Nb≤0.1%, V≤0.1%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting.

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：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：US09375809B2

公开(公告)日：2016-06-28

申请号：US14865747

申请日：2015-09-25

Applicant: ArcelorMittal France

Inventor： Jean-Francois Canourgues ,  Aurelien Pic ,  Pascal Verrier ,  Rene Vierstraete ,  Wolfram Ehling ,  Bernd Thommes

IPC: B23K26/32 ,  B23K9/00 ,  B23K9/02 ,  B23K26/36 ,  B23K9/23 ,  B23K33/00 ,  B32B15/01 ,  C23C2/26 ,  C23C28/02 ,  B23K1/14 ,  B23K26/24 ,  B23K37/00 ,  C23C10/22 ,  B23K26/40 ,  C22C21/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C23C2/12 ,  B23K31/02 ,  C23C2/04 ,  C21D1/00 ,  C21D6/00 ,  C21D9/50

CPC classification number: B23K33/00 ,  B23K1/14 ,  B23K9/0026 ,  B23K9/02 ,  B23K9/025 ,  B23K9/23 ,  B23K10/02 ,  B23K26/21 ,  B23K26/24 ,  B23K26/26 ,  B23K26/32 ,  B23K26/322 ,  B23K26/36 ,  B23K26/362 ,  B23K26/40 ,  B23K31/02 ,  B23K37/003 ,  B23K2101/18 ,  B23K2101/34 ,  B23K2103/04 ,  B23K2103/08 ,  B23K2103/10 ,  B23K2103/50 ,  B32B15/012 ,  C21D1/00 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D9/50 ,  C21D2211/008 ,  C22C21/02 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/28 ,  C22C38/32 ,  C23C2/04 ,  C23C2/12 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40 ,  C23C10/22 ,  C23C28/021 ,  F16B5/08 ,  Y10T428/12229 ,  Y10T428/12271 ,  Y10T428/12389 ,  Y10T428/12396 ,  Y10T428/12486 ,  Y10T428/12493 ,  Y10T428/12757 ,  Y10T428/12764 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/2495 ,  Y10T428/24967 ,  Y10T428/24975 ,  Y10T428/26 ,  Y10T428/263 ,  Y10T428/264 ,  Y10T428/265

Abstract: A method of butt-welding steel plates is provided. The method includes the steps of coating a first steel plate by dipping the first steel plate in a molten bath to obtain a first precoat upon the first steel plate. The first precoat includes a first intermetallic alloy layer and a first metal alloy layer, the first intermetallic alloy layer is topped by the first metal alloy layer. On a first face of the first steel plate, the first metal alloy layer is removed in a first area at a first periphery of the first steel plate, while at least part of the first intermetallic alloy layer in the first area remains. A second steel plate is coated by dipping the second steel plate in the molten bath or a further molten bath to obtain a second precoat upon the second steel plate. The second precoat includes a second intermetallic alloy layer and a second metal alloy layer, the second intermetallic alloy layer is topped by the second metal alloy layer. On a second face of the second steel plate, the second metal alloy layer is removed in a second area at a second periphery of the second metal plate. While at least part of the second intermetallic alloy layer in the second area remains. After removal of the first and second metal alloy layers, the first periphery of the first steel plate is butt-welded to the second periphery of the second steel plate to form a welded blank.

Abstract translation: 提供了对接钢板的方法。 该方法包括以下步骤：通过将第一钢板浸入熔融浴中来涂覆第一钢板，以在第一钢板上获得第一预涂层。 第一预涂层包括第一金属间合金层和第一金属合金层，第一金属间合金层由第一金属合金层顶起。 在第一钢板的第一面上，在第一钢板的第一周边的第一区域中除去第一金属合金层，而第一区域中的第一金属间合金层的至少一部分残留。 通过将第二钢板浸入熔池或另外的熔池中来涂覆第二钢板，以在第二钢板上获得第二预涂层。 第二预涂层包括第二金属间合金层和第二金属合金层，第二金属间合金层由第二金属合金层顶起。 在第二钢板的第二面上，在第二金属板的第二周边的第二区域中除去第二金属合金层。 而第二区域的第二金属间合金层的至少一部分仍然存在。 在去除第一和第二金属合金层之后，第一钢板的第一周边对接焊到第二钢板的第二周边，以形成焊接坯料。