公开(公告)号：US20200001402A1

公开(公告)日：2020-01-02

申请号：US16569267

申请日：2019-09-12

Applicant: ArcelorMittal

Inventor： Francis SCHMIT ,  Rene VIERSTRAETE ,  Qingdong YIN ,  Wolfram EHLING

IPC: B23K26/60 ,  B23K26/26 ,  B23K26/322 ,  B23K26/32

Abstract: A method for the preparation of steel sheets for fabricating a welded steel blank is provided. The method includes procuring at least two pre-coated steel sheets, each having a pre-coating of an intermetallic alloy layer, topped by a layer of aluminum metal or aluminum alloy or aluminum-based alloy. The sheets have a principal face, an opposite principal face, and at least one secondary face. The sheets are positioned so a gap between 0.02 and 2 mm exists between the secondary faces. The secondary faces face each other. The positioning of the first and second sheets defines a median plane perpendicular to the principal faces. Layers of metal alloy are removed by melting and vaporization simultaneously on the principal faces, in a peripheral zone of the sheets, the peripheral zones being the zones of the principal faces closest in relation to the median plane.

公开(公告)号：US20200001403A1

公开(公告)日：2020-01-02

申请号：US16569989

申请日：2019-09-13

Applicant: ArcelorMittal

Inventor： Francis SCHMIT ,  Rene VIERSTRAETE ,  Qingdong YIN ,  Wolfram EHLING

IPC: B23K26/60 ,  B23K26/26 ,  B23K26/322 ,  B23K26/32

Abstract: A welded blank includes a first pre-coated steel sheet, a second pre-coated steel sheet the first pre-coated steel sheet including a principal first face and an opposite principal first face, the first layer being removed by melting and vaporization in a first peripheral zone of the first pre-coated steel sheet, and the second pre-coated steel sheet including a second principal face and an opposite second principal face, the second layer being removed by melting and vaporization in a second peripheral zone of the second pre-coated steel sheet. At least one welded joint defining a median plane perpendicular to the first and second principal faces. The welded joint area has at least one advantageous characteristic such as a sum of the widths of the first and second peripheral zones of the first and second pre-coated steel sheets varying by less than 10% along the welded joint, the first and second solidification ripples being aligned at the welded joint with respect to the median plane, morphologies of the first and second solidification ripples at the welded joint being identical and symmetrical, and/or an aluminum content in the welded joint being below 0.3%.

公开(公告)号：US20210162550A1

公开(公告)日：2021-06-03

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

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：US20240042556A1

公开(公告)日：2024-02-08

申请号：US18381388

申请日：2023-10-18

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

CPC classification number: B23K26/60 ,  B23K26/26 ,  B23K26/322 ,  B23K26/348 ,  B23K9/173 ,  B23K26/211 ,  B23K9/167 ,  B23K26/40 ,  B23K26/361 ,  B23K28/02 ,  B23K26/32 ,  B23K2101/006

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：US20200016697A1

公开(公告)日：2020-01-16

申请号：US16567562

申请日：2019-09-11

Applicant: ArcelorMittal

Inventor： Francis SCHMIT ,  Rene VIERSTRAETE ,  Qingdong YIN ,  Wolfram EHLING

IPC: B23K26/60 ,  B23K26/32 ,  B23K26/322 ,  B23K26/26

Abstract: A method for the preparation of steel sheets for fabricating a welded steel blank is provided. The method includes procuring at least two pre-coated steel sheets, each having a pre-coating of an intermetallic alloy layer, topped by a layer of aluminum metal or aluminum alloy or aluminum-based alloy. The sheets have a principal face, an opposite principal face, and at least one secondary face. The sheets are positioned so a gap between 0.02 and 2 mm exists between the secondary faces. The secondary faces face each other. The positioning of the first and second sheets defines a median plane perpendicular to the principal faces. Layers of metal alloy are removed by melting and vaporization simultaneously on the principal faces, in a peripheral zone of the sheets, the peripheral zones being the zones of the principal faces closest in relation to the median plane.