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1.发明申请公开(公告)号：US20170341187A1
公开(公告)日：2017-11-30
申请号：US15637928
申请日：2017-06-29
Applicant: ARCELORMITTAL
Inventor： Laurent Cretteur , Qingdong Yin , Francis Schmit , Wolfram Ehling
IPC: B23K31/02 , B23K26/60 , B23K26/32 , B23K35/02 , B23K35/30 , B23K35/38 , B32B15/01 , C21D1/673 , C22C38/18 , C22C38/04 , C21D9/50 , C21D9/48 , C23C28/02 , B23K101/34 , B23K103/08 , B23K103/00
CPC classification number: B23K31/02 , B23K26/32 , B23K26/60 , B23K35/0261 , B23K35/3053 , B23K35/3073 , B23K35/383 , B23K2101/34 , B23K2103/08 , B23K2103/50 , B32B15/012 , C21D1/673 , C21D9/48 , C21D9/50 , C21D9/505 , C21D2211/001 , C21D2211/008 , C21D2221/01 , C21D2221/02 , C21D2251/02 , C22C38/04 , C22C38/18 , C23C28/021 , C23C28/023 , Y10T403/479
Abstract: A welded steel part with a very high mechanical strength is provided. The welded steel part is obtained by heating followed by hot forming, then cooling of at least one welded blank obtained by butt welding of at least one first and one second sheet. The at least one first and second sheets including, at least in part, a steel substrate and a pre-coating which includes an intermetallic alloy layer in contact with the steel substrate, topped by a metal alloy layer of aluminum or aluminum-based alloy. A method for the fabrication of a welded steel part and the fabrication of structural or safety parts for automotive vehicles are also provided.
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公开(公告)号：US11826856B2
公开(公告)日：2023-11-28
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 , B23K101/00 , B23K101/18 , B23K101/34 , B23K103/04 , B23K103/08 , B23K103/00
CPC classification number: B23K26/60 , B23K9/167 , B23K9/173 , B23K26/211 , B23K26/26 , B23K26/32 , B23K26/322 , B23K26/348 , B23K26/361 , B23K26/40 , B23K28/02 , B23K2101/006 , B23K2101/18 , B23K2101/34 , B23K2103/04 , B23K2103/08 , B23K2103/50
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.
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公开(公告)号：US10668570B2
公开(公告)日：2020-06-02
申请号：US15306735
申请日：2015-04-17
Applicant: ArcelorMittal
Inventor： Francis Schmit , René 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 , B23K101/00 , B23K101/18 , B23K101/34 , B23K103/04 , B23K103/08 , B23K103/00
Abstract: The present invention provides a method for the preparation of steel sheets to be fabricated into a welded steel blank. The method includes procuring at least one pre-coated first steel sheet and one pre-coated second steel sheet, made up of a steel substrate and a pre-coating made up of an intermetallic alloy layer in contact with the steel substrate, topped by a layer of aluminum metal or aluminum alloy or aluminum-based alloy, the first sheet having a principal face, an opposite principal face, and at least one secondary face, the second sheet having a principal face, an opposite principal face and at least one secondary face, positioning the first and second sheets, leaving a gap of between 0.02 and 2 mm between the secondary faces and facing each other, the mating of the first and second sheets defining a median plane perpendicular to the principal faces of the first sheet and the second sheet, then removing the layers of metal alloy 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 located one on either side of it.
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4.发明申请公开(公告)号：US20170304952A1
公开(公告)日：2017-10-26
申请号：US15637913
申请日：2017-06-29
Applicant: ARCELORMITTAL
Inventor： Laurent Cretteur , Qingdong Yin , Francis Schmit , Wolfram Ehling
IPC: B23K31/02 , C23C28/02 , B23K26/60 , B23K26/32 , B23K35/02 , B23K35/30 , B23K35/38 , B32B15/01 , C21D1/673 , C22C38/18 , C22C38/04 , C21D9/50 , C21D9/48 , B23K101/34 , B23K103/08 , B23K103/00
Abstract: A welded steel part with a very high mechanical strength is provided. The welded steel part is obtained by heating followed by hot forming, then cooling of at least one welded blank obtained by butt welding of at least one first and one second sheet. The at least one first and second sheets including, at least in part, a steel substrate and a pre-coating which includes an intermetallic alloy layer in contact with the steel substrate, topped by a metal alloy layer of aluminum or aluminum-based alloy. A method for the fabrication of a welded steel part and the fabrication of structural or safety parts for automotive vehicles are also provided.
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公开(公告)号：US11911847B2
公开(公告)日：2024-02-27
申请号：US16976392
申请日：2019-02-26
Applicant: ArcelorMittal
Inventor： Francis Schmit , Maria Poirier , Sadok Gaied
IPC: B23K26/322 , B23K26/323 , B23K26/12 , B23K26/32 , C21D9/50 , C21D9/46 , C21D1/673 , C21D1/18 , B23K35/30 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/50 , C22C38/54 , C22C38/58 , B62B3/02 , B62B3/10 , B62B3/12 , B23K101/18 , B23K103/04 , B23K101/00 , B23K26/24 , C22C38/48
CPC classification number: B23K26/322 , B23K26/123 , B23K26/32 , B23K26/323 , B23K35/3073 , B62B3/02 , B62B3/106 , B62B3/12 , C21D1/185 , C21D1/673 , C21D9/46 , C21D9/50 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/50 , C22C38/54 , C22C38/58 , B23K26/24 , B23K2101/006 , B23K2101/185 , B23K2103/04 , B62B2202/22 , B62B2205/30 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/48
Abstract: A method for producing a part includes providing a first and a second precoated sheet (1,2), butt welding the first and second precoated sheets (1) to obtain a blank (15), and heating the blank (15) to a heat treatment temperature at least 10° C. lower than the full austenitization temperature of the weld joint (22) and at least 15° C. higher than a minimum temperature Tmin:
T
min
(
°
C
.
)
=
AC
3
(
WJ
)
-
α
IC
max
100
(
Ac
3
(
WJ
)
-
673
-
40
×
Al
)
.
where
Ac3(WJ) is the full austenitization temperature of the weld joint (22)
α
IC
max
=
(
1
-
(
1
+
ρ
)
(
max
(
1
;
ρ
)
Ts
2
-
350
)
(
1
-
β
)
(
ρ
Ts
2
+
Ts
1
)
+
β
(
1
+
ρ
)
(
3130
C
FW
+
750
)
-
350
×
(
1
+
ρ
)
)
×
100
,
where
TS1 and TS2 are the ultimate tensile strengths of the strongest and the weakest substrate after press-hardening
CFW is the carbon content of the filler material
β is the proportion of filler material
ρ is the ratio between the thicknesses of the weakest and the strongest substrate
The method also includes holding the blank (15) at the heat treatment temperature for a time between 2 and 10 minutes; and press-forming the blank (15) into a part and cooling.-
Patent Agency Ranking
公开(公告)号：US11786993B2
公开(公告)日：2023-10-17
申请号：US16757451
申请日：2018-10-19
Applicant: ArcelorMittal
Inventor： Francis Schmit , Quentin Bernardi
IPC: B23K26/322 , B23K26/362 , B23K26/40 , B32B15/01 , C21D9/50 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , B23K101/18 , B23K103/20 , B23K26/14 , B23K26/38
CPC classification number: B23K26/322 , B23K26/362 , B23K26/40 , B32B15/012 , C21D9/50 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , B23K26/14 , B23K26/38 , B23K2101/185 , B23K2103/20 , C21D2211/001 , Y10T428/12757
Abstract: A method for producing a precoated steel sheet (1) includes providing a precoated steel strip comprising a steel substrate (3) having, on at least one of its main faces, a precoating comprising an intermetallic alloy layer and a metallic alloy layer. The metallic alloy layer is a layer of aluminum, a layer of aluminum alloy or a layer of aluminum-based alloy. The method also includes laser cutting said precoated steel strip so as to obtain at least one precoated steel sheet (1) comprising a cut edge surface (13) resulting from the cutting operation. The cut edge surface (13) includes a substrate region (14) and a precoating region (15) and the thickness of the precoated steel sheet (1) is comprised between 0.8 mm and 5 mm. The laser cutting is carried out such that it results directly in a corrosion-improved zone (19) of the cut edge surface (13). The surface fraction of aluminum on the substrate region (14) of the corrosion-improved zone (19) is greater than or equal to 9% and the surface fraction of aluminum on the bottom half of the substrate region (14) of the corrosion-improved zone (19) is greater than or equal to 0.5%.
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7.发明授权公开(公告)号：US10654134B2
公开(公告)日：2020-05-19
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 , B23K26/348 , B23K9/173 , B23K26/211 , B23K9/167 , B23K26/40 , B23K26/361 , B23K28/02 , B23K26/32 , B23K101/00 , B23K101/18 , B23K101/34 , B23K103/04 , B23K103/08 , B23K103/00
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.
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8.发明授权公开(公告)号：US09827633B2
公开(公告)日：2017-11-28
申请号：US15615226
申请日：2017-06-06
Applicant: ArcelorMittal
Inventor： Francis Schmit , Rene Vierstraete , Qingdong Yin , Wolfram Ehling
IPC: B23K26/60 , B23K26/26 , B23K26/32 , B23K26/322 , B23K103/08 , B23K101/18 , B23K101/34 , B23K103/04 , B23K103/00 , B23K101/00
CPC classification number: B23K26/60 , B23K26/26 , B23K26/32 , B23K26/322 , B23K2101/006 , B23K2101/18 , B23K2101/34 , B23K2103/04 , B23K2103/08 , B23K2103/50
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.
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9.发明公开公开(公告)号：US20240116141A1
公开(公告)日：2024-04-11
申请号：US18391841
申请日：2023-12-21
Applicant: ArcelorMittal
Inventor： Laurent Cretteur , Qingdong Yin , Francis Schmit , Wolfram Ehling
IPC: B23K31/02 , B23K26/32 , B23K26/60 , B23K35/02 , B23K35/30 , B23K35/38 , B32B15/01 , C21D1/673 , C21D9/48 , C21D9/50 , C22C38/04 , C22C38/18 , C23C28/02
CPC classification number: B23K31/02 , B23K26/32 , B23K26/60 , B23K35/0261 , B23K35/3053 , B23K35/3073 , B23K35/383 , B32B15/012 , C21D1/673 , C21D9/48 , C21D9/50 , C21D9/505 , C22C38/04 , C22C38/18 , C23C28/021 , C23C28/023 , B23K2101/34
Abstract: A welded steel part with a very high mechanical strength is provided. The welded steel part is obtained by heating followed by hot forming, then cooling of at least one welded blank obtained by butt welding of at least one first and one second sheet. The at least one first and second sheets including, at least in part, a steel substrate and a pre-coating which includes an intermetallic alloy layer in contact with the steel substrate, topped by a metal alloy layer of aluminum or aluminum-based alloy. A method for the fabrication of a welded steel part and the fabrication of structural or safety parts for automotive vehicles are also provided.
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10.发明申请公开(公告)号：US20220347797A1
公开(公告)日：2022-11-03
申请号：US17868040
申请日：2022-07-19
Applicant: ArcelorMittal
Inventor： Laurent Cretteur , Qingdong Yin , Francis Schmit , Wolfram Ehling
IPC: B23K31/02 , B23K26/32 , B23K26/60 , B23K35/30 , B23K35/38 , B23K35/02 , B32B15/01 , C21D9/48 , C21D9/50 , C21D1/673 , C22C38/04 , C22C38/18 , C23C28/02
Abstract: A welded steel part with a very high mechanical strength is provided. The welded steel part is obtained by heating followed by hot forming, then cooling of at least one welded blank obtained by butt welding of at least one first and one second sheet. The at least one first and second sheets including, at least in part, a steel substrate and a pre-coating which includes an intermetallic alloy layer in contact with the steel substrate, topped by a metal alloy layer of aluminum or aluminum-based alloy. A method for the fabrication of a welded steel part and the fabrication of structural or safety parts for automotive vehicles are also provided.
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