公开(公告)号：US20220072658A1

公开(公告)日：2022-03-10

申请号：US17417265

申请日：2018-12-24

Applicant: ArcelorMittal

Inventor： Francis SCHMIT ,  Maria POIRIER ,  Cristian ALVAREZ ,  Lucille GOUTON ,  Thierry DAVID ,  Ivan VIAUX

IPC: B23K26/26 ,  B23K26/322

Abstract: A method for producing a welded steel blank (1) includes providing two precoated sheets (2), each comprising a steel substrate (3) having a precoating (5) on each of its two main faces (4), each sheet (2) comprising, on each main face (4), at a weld edge (14), a removal zone (18) in which the precoating (5) is removed over a removal fraction; and butt welding the sheets (2) using a filler wire (20) so as to create a weld joint (22) having an aluminum content AlWJ comprised between 0.1 wt. % and 1.2 wt. %. The composition of the wire (20) and the proportion of wire (20) added is such that the weld joint (22) has: (a) a quenching factor FTWJ such that FTWJ−0.96FTBM≥0, (b) a nickel content NiWJ≤14−3.4×AlWJ and a chromium content CrWJ≤5−2×AlWJ, where AlWJ is the aluminum content of the weld joint (22).

公开(公告)号：US20250033147A1

公开(公告)日：2025-01-30

申请号：US18716662

申请日：2022-11-16

Applicant: ArcelorMittal

Inventor： Ivan VIAUX ,  Sadok Didier GAIED ,  Jean-François CANOURGUES ,  Sylvie ROUSSILLON

IPC: B23K26/26 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

Abstract: Method for butt-welding two steel sheets including the steps of providing two steel sheets (1, 2), on all the faces having a zinc based metallic coating thickness Znth above 3.5 microns and a steel sheet substrate (12) with a Carbon content above 0.15% or a Silicon content above 0.5% or both: removing at least part of-the metallic coating to form an ablation area before welding (6) having a Zinc-based metallic coating thickness after ablation Znab which is equal to or lower than 3.5 microns and in such a way that the width of the ablation area after welding (8) is equal to or greater than 0.5 mm, butt welding the steel sheets (1, 2) using at least a laser source.

公开(公告)号：US20180354013A1

公开(公告)日：2018-12-13

申请号：US15780206

申请日：2016-12-09

Applicant: ArcelorMittal

Inventor： Ivan VIAUX

IPC: B21D22/02 ,  B62D25/02 ,  B62D25/04 ,  B62D65/02 ,  B21D47/01 ,  B21D53/88 ,  C21D1/673 ,  C21D9/50 ,  C21D6/00 ,  C22C38/28 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

CPC classification number: B21D22/022 ,  B21D47/01 ,  B21D53/88 ,  B62D25/02 ,  B62D25/025 ,  B62D25/04 ,  B62D65/02 ,  C21D1/673 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D9/50 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28

Abstract: A method containing the steps of: providing an inner structural part blank having a L-shape and an outer structural part blank having a L-shape, the inner and outer structural part blanks being substantially planar; hot stamping the inner structural part blank to form an inner automotive structural part having an inner lowerside sill part and an inner lower front pillar part made of a single part with the inner lowerside sill part; hot stamping the outer structural part blank to form an outer automotive structural part having an outer lowerside sill part and an outer lower front pillar part made of a single part with the outer lowerside sill part; and assembling the inner automotive structural part and the outer automotive structural part to form the automotive structural part.

公开(公告)号：US20200262372A1

公开(公告)日：2020-08-20

申请号：US16347374

申请日：2017-11-16

Applicant: ArcelorMittal

Inventor： Damien HERISSON ,  Jimmy LAM ,  Dan HASENPOUTH ,  Elie GIBEAU ,  Ivan VIAUX

IPC: B60R19/18 ,  B21D53/88 ,  B21D5/08

Abstract: A bumper beam made of at least one roll formed steel sheet is described. The bumper beam contains an upper beam and a lower beam extending in a transversal direction, the upper beam and the lower beam each having a closed cross-section defined by a front wall, a rear wall, an upper wall and a lower wall, the upper wall and the lower wall joining the front wall to the rear wall, and a central wall extending between the front walls, the rear walls of the upper beam and of the lower beam forming both the lower wall of the upper beam and the upper wall of the lower beam, the central wall extending in at least two different planes.

公开(公告)号：US20180354014A1

公开(公告)日：2018-12-13

申请号：US15780335

申请日：2016-12-08

Applicant: ArcelorMittal

Inventor： Ivan VIAUX ,  Ives DROUADAINE

IPC: B21D22/02 ,  B62D25/04 ,  B62D25/02 ,  B62D65/02 ,  B21D47/01 ,  B23K26/28

CPC classification number: B21D22/022 ,  B21D47/01 ,  B23K26/28 ,  B62D25/02 ,  B62D25/04 ,  B62D65/02

Abstract: A method for producing an inner automotive structural part containing localized reinforced areas, the method containing the steps of: providing an inner upper front pillar blank, an inner center pillar blank and an inner side rail blank, hot stamping the inner upper front pillar blank, hot stamping the inner center pillar blank, hot stamping the inner side rail blank, wherein, the method contains, prior to the hot stamping steps, the steps of: attaching an inner upper front pillar reinforcement blank to a part of the inner upper front pillar blank, said inner upper front pillar reinforcement blank being hot stamped together with the inner upper front pillar blank, attaching an inner center pillar reinforcement blank to a part of the inner center pillar blank, said inner center pillar reinforcement blank being hot stamped together with the inner center pillar blank.