公开(公告)号：US20240263265A1

公开(公告)日：2024-08-08

申请号：US18640780

申请日：2024-04-19

申请人： United States Steel Corporation

发明人： David Paul Hoydick ,  Eduardo Augusto Silva ,  Matthew Michael McCosby

IPC分类号： C21D9/46 ,  B32B15/01 ,  B32B15/04 ,  B32B15/18 ,  C21D1/20 ,  C21D1/22 ,  C21D1/25 ,  C21D1/26 ,  C21D1/78 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/40 ,  C22C38/54 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23C28/02 ,  C25D3/22 ,  C25D5/36

CPC分类号： C21D9/46 ,  B32B15/013 ,  B32B15/043 ,  B32B15/18 ,  C21D1/20 ,  C21D1/22 ,  C21D1/25 ,  C21D1/26 ,  C21D1/78 ,  C21D8/0247 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/40 ,  C22C38/54 ,  C23C2/0224 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23C28/021 ,  C23C28/025 ,  C25D3/22 ,  C25D5/36 ,  C21D8/0236 ,  C21D8/0278 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008

摘要： The present invention provides steel sheet products having controlled compositions that are subjected to two-step annealing processes to produce sheet products having desirable microstructures and favorable mechanical properties such as high strength and ultra-high formability. The steel sheet products may be cold rolled or hot rolled. Steels processed in accordance with the present invention exhibit favorable combined ultimate tensile strength and total elongation (UTS•TE) properties, and may fall into the category of Generation 3 advanced high strength steels, desirable in various industries including automobile manufacturers.

公开(公告)号：US20240229276A1

公开(公告)日：2024-07-11

申请号：US18614203

申请日：2024-03-22

申请人： SMS group GmbH

发明人： Henry GÖRTZ ,  Thomas DAUBE ,  Frank PLATE ,  Walter TIMMERBEUL

IPC分类号： C25D3/22 ,  C25D17/00 ,  C25D17/10

CPC分类号： C25D3/22 ,  C25D17/007 ,  C25D17/10

摘要： An electroplating method and a system for electrolytically coating a steel strip, in particular for the automotive sector, with a coating based on zinc and/or a zinc alloy utilizes pulse technology.

公开(公告)号：US11946152B2

公开(公告)日：2024-04-02

申请号：US17778104

申请日：2020-12-18

申请人： Atotech Deutschland Gmbh & Co. KG

发明人： Steven Leonhard ,  Thomas Freese

IPC分类号： C25D21/08 ,  C25D3/22 ,  C25D5/34 ,  C25D21/16 ,  C25D21/18 ,  C25D21/20

CPC分类号： C25D3/22 ,  C25D5/34

摘要： A method for depositing a zinc-nickel alloy on a substrate, including:



(a) providing the substrate,
(b) providing an aqueous zinc-nickel deposition bath as catholyte in a compartment, wherein the compartment includes an anode and anolyte, the anolyte being separated from catholyte by a membrane, and the catholyte includes nickel ions, complexing agent, zinc ions,
(c) depositing zinc-nickel alloy onto the substrate, wherein after step (c) nickel ions have lower concentration than before step (c),
(d) rinsing the zinc-nickel coated substrate in water, obtaining a rinsed zinc-nickel coated substrate and rinse water including a portion of the complexing agent and nickel ions,
wherein (i) a portion of rinse water and/or a portion of catholyte is treated in a first treatment compartment to separate water from the complexing agent and the nickel ions,
(ii) returning the separated complexing agent to the catholyte, and
(iii) adding nickel ion to the catholyte.

公开(公告)号：US20230416855A1

公开(公告)日：2023-12-28

申请号：US18037270

申请日：2021-11-10

申请人： POSCO Co., Ltd

发明人： Kyong-Su Park ,  Chang-Young Son

IPC分类号： C21D8/02 ,  C21D9/46 ,  C22C38/04 ,  C22C38/02 ,  C22C38/06 ,  C22C38/00 ,  C22C38/14 ,  C22C38/12 ,  C23C2/06 ,  C23C2/12 ,  C23C2/40 ,  C23C4/06 ,  C25D3/22 ,  C25D3/44

CPC分类号： C21D8/0226 ,  C21D9/46 ,  C22C38/04 ,  C22C38/02 ,  C22C38/06 ,  C22C38/002 ,  C22C38/14 ,  C22C38/12 ,  C21D8/0263 ,  C23C2/06 ,  C23C2/12 ,  C23C2/40 ,  C23C4/06 ,  C25D3/22 ,  C25D3/44 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/009 ,  C21D2211/008 ,  C21D2211/001

摘要： A hot-rolled steel sheet comprises, by wt %, 0.1-0.25% of carbon (C), 0.2-2.0% of manganese (Mn), 0.3% or less of silicon (Si), 0.05% or less of aluminum (Al), 0.05% or less of phosphorous (P), 0.03% or less of sulfur (S), 0.01% or less of nitrogen (N), 0.005 to 0.05% of titanium (Ti), 0.0005 to 0.005% of boron (B), 0.01% or less of niobium (Nb), 0.1% or less of molybdenum (Mo), 0.1% or less of vanadium (V), and the balance of iron (Fe) and inevitable impurities, comprises, in a microstructure, 55-90% of bainite and 10-45% of ferrite by volume fraction, the number per unit area of carbides having a major axis length of 25-500 nm from among carbides present in the bainite is 3*106/mm2 or more, and the average aspect ratio (major axis/minor axis) of the carbides present in the bainite can be 2.0 or less.

公开(公告)号：US20230407449A1

公开(公告)日：2023-12-21

申请号：US18033101

申请日：2021-06-29

申请人： JFE STEEL CORPORATION

发明人： Rinta SATO ,  Minoru TANAKA ,  Daisuke MIZUNO ,  Ryoto NISHIIKE

IPC分类号： C23C2/40 ,  C22C38/02 ,  C22C38/38 ,  C22C38/00 ,  C22C38/06 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/60 ,  B21D22/02 ,  C21D9/46 ,  C21D8/02 ,  C23C2/06 ,  C25D3/22 ,  C25D5/50

CPC分类号： C23C2/40 ,  C25D5/50 ,  C22C38/38 ,  C22C38/001 ,  C22C38/002 ,  C22C38/06 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/60 ,  B21D22/022 ,  C21D9/46 ,  C21D8/0247 ,  C23C2/06 ,  C25D3/22 ,  C22C38/02

摘要： A hot-pressed member having excellent post-coating corrosion resistance and excellent resistance spot weldability, a method for manufacturing the hot-pressed member, and a steel sheet for hot pressing suitable for a hot-pressed member having excellent post-coating corrosion resistance and excellent resistance spot weldability. The hot-pressed member includes a Zn-based coated layer on a first side of a steel sheet, and a Zn-based coated layer on a second side of the steel sheet. A coating weight of Zn in the Zn-based coated layer on the first side of the steel sheet is 5 to 35 g/m2, and an average line roughness Ra of a surface of the Zn-based coated layer on the first side is less than or equal to 2.5 μm. The average line roughness Ra of a surface of the Zn-based coated layer on the second side of the steel sheet is greater than or equal to 3.5 μm.

公开(公告)号：US11674195B2

公开(公告)日：2023-06-13

申请号：US17491062

申请日：2021-09-30

申请人： HYUNDAI MOTOR COMPANY ,  KIA CORPORATION

发明人： Hyuck-Min Kwon

IPC分类号： C21D9/46 ,  C21D8/02 ,  C25D3/22 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/32 ,  B32B15/01

CPC分类号： C21D9/46 ,  B32B15/013 ,  C21D8/0236 ,  C21D8/0247 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/32 ,  C25D3/22 ,  Y10T428/12799

摘要： The present disclosure relates to an ultra-high-strength plated steel sheet and a method for molding the same, and more particularly, to an ultra-high-strength plated steel sheet having high tensile strength without the occurrence of plating peeling and hydrogen delayed fracture phenomenon during roll forming molding, and a method for molding the same.

公开(公告)号：US11654653B2

公开(公告)日：2023-05-23

申请号：US16605473

申请日：2018-04-25

申请人： ArcelorMittal

发明人： Christian Allely ,  Pascal Bertho ,  Anirban Chakraborty ,  Hassan Ghassemi-Armaki

IPC分类号： C25D5/12 ,  B23K11/11 ,  C22C38/02 ,  C22C38/04 ,  C25D5/50 ,  C21D8/02 ,  C23C10/28 ,  C25D3/12 ,  C21D9/46 ,  C25D3/22 ,  C22C38/06 ,  B32B15/01

CPC分类号： B32B15/011 ,  B23K11/11 ,  C21D8/0273 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C10/28 ,  C25D3/12 ,  C25D3/22 ,  C25D5/12 ,  C25D5/50

摘要： The present invention relates to a method for the manufacture of a galvannealed steel sheet including the steps of A.) coating of the steel sheet with a first coating consisting of nickel and having a thickness between 150 nm and 650 nm, the steel sheet having the following composition in weight percentage 0.10

公开(公告)号：US11649522B2

公开(公告)日：2023-05-16

申请号：US16614734

申请日：2018-06-13

申请人： ArcelorMittal

发明人： Jean-Marc Pipard ,  Sebastien Cremel ,  Anirban Chakraborty ,  Damon Panahi ,  Olga Girina ,  Hassan Ghassemi-Armaki ,  Pavan Challa Venkata Surya ,  Yacine Benlatreche

IPC分类号： C21D9/50 ,  C21D8/02 ,  C21D6/00 ,  C22C38/38 ,  C22C38/22 ,  C22C38/06 ,  C22C38/02 ,  C21D9/46 ,  C21D1/76 ,  C23C2/02 ,  C23C2/40 ,  C25D5/36 ,  C23F17/00 ,  B23K11/11 ,  B23K31/12 ,  B23K11/16 ,  B23K37/04 ,  B23K103/04 ,  B23K101/00 ,  C23C2/06 ,  C25D3/22

CPC分类号： C21D9/50 ,  B23K11/115 ,  B23K11/163 ,  B23K31/125 ,  B23K37/0408 ,  C21D1/76 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0236 ,  C21D8/0247 ,  C21D9/46 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/38 ,  C23C2/02 ,  C23C2/40 ,  C23F17/00 ,  C25D5/36 ,  B23K2101/006 ,  B23K2103/04 ,  C21D2211/001 ,  C21D2211/008 ,  C23C2/06 ,  C25D3/22

摘要： A method for producing a zinc or zinc-alloy coated steel sheet with a tensile strength higher than 900 MPa, for the fabrication of resistance spot welds containing in average not more than two Liquid Metal Embrittlement cracks per weld having a depth of 100 μm or more, with steps of providing a cold-rolled steel sheet, heating cold-rolled steel sheet up to a temperature T1 between 550° C. and Ac1+50° C. in a furnace zone with an atmosphere (A1) containing from 2 to 15% hydrogen by volume, so that the iron is not oxidized, then adding in the furnace atmosphere, water steam or oxygen with an injection flow rate Q higher than (0.07%/h×α), α being equal to 1 if said element is water steam or equal to 0.52 if said element is oxygen, at a temperature T≥T1, so to obtain an atmosphere (A2) with a dew point DP2 between −15° C. and the temperature Te of the iron/iron oxide equilibrium dew point, then heating the sheet from temperature T1 up to a temperature T2 between 720° C. and 1000° C. in a furnace zone under an atmosphere (A2) of nitrogen containing from 2 to 15% hydrogen and more than 0.1% CO by volume, with an oxygen partial pressure higher than 10−21 atm., wherein the duration tD of heating of the sheet from temperature T1 up to the end of soaking at temperature T2 is between 100 and 500 s., soaking the sheet at T2, then cooling the sheet at a rate between 10 and 400° C./s, then coating the sheet with zinc or zinc-alloy coating.

公开(公告)号：US20190203315A1

公开(公告)日：2019-07-04

申请号：US16325299

申请日：2017-08-29

申请人： JFE STEEL CORPORATION

发明人： Yoshie OBATA ,  Katsutoshi TAKASHIMA ,  Takashi KOBAYASHI ,  Hiroshi MATSUDA

IPC分类号： C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/60 ,  C23F17/00 ,  B32B15/01

CPC分类号： C21D9/46 ,  B32B15/013 ,  C21D1/18 ,  C21D1/25 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D8/0278 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0463 ,  C21D8/0473 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C22C18/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/60 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23F17/00 ,  C25D3/22

摘要： A high-strength cold rolled steel sheet having a specified chemical composition and a method for producing the same. The steel sheet having a microstructure including, in terms of volume fraction, 35% or less of ferrite, 1% or more and 10% or less of retained austenite, 2% or more and 12% or less of as-quenched martensite, and a total of 25% to 70% of bainite and tempered martensite. The microstructure has an average crystal grain diameter of the ferrite: 5.0 μm or less, an average crystal grain diameter of the retained austenite: 2.0 μm or less, an average crystal grain diameter of the as-quenched martensite: 3.0 μtm or less, an average crystal grain diameter of the bainite and the tempered martensite phase: 4.0 μm or less, and an average intergrain distance of the as-quenched martensite of 1.0 μm or more.

公开(公告)号：US20190062185A1

公开(公告)日：2019-02-28

申请号：US16175107

申请日：2018-10-30

申请人： Mahmoud Amouzadeh Tabrizi ,  Mojtaba Shamsipur ,  Reza Saber ,  Saeed Sarkar

发明人： Mahmoud Amouzadeh Tabrizi ,  Mojtaba Shamsipur ,  Reza Saber ,  Saeed Sarkar

IPC分类号： C02F1/70 ,  C25D11/34 ,  C25D7/00 ,  C25D3/12 ,  C25D3/22

CPC分类号： C02F1/705 ,  B82Y15/00 ,  B82Y25/00 ,  B82Y40/00 ,  C02F2101/32 ,  C02F2101/38 ,  C02F2305/08 ,  C25D3/12 ,  C25D3/22 ,  C25D5/12 ,  C25D5/34 ,  C25D7/006 ,  C25D7/0614 ,  C25D11/34

摘要： A method for decontamination of nitroarenes including fabricating an exemplary nanomotor and chemically reducing nitroarenes of an acidic solution using the exemplary nanomotor. Fabricating the exemplary nanomotor may include depositing a plurality of magnetic nanoparticles on an Au nanosheet and depositing a plurality of zinc (Zn) nanoparticles on the plurality of magnetic nanoparticles. Chemically reducing the nitroarenes of the acidic solution may include generating hydrogen bubbles in the acidic solution by adding the exemplary nanomotor to the acidic solution and guiding the exemplary nanomotor in the acidic solution by applying a magnetic force to the exemplary nanomotor. Generating the hydrogen bubbles in the acidic solution may include reducing hydrogen ions in the acidic solution through a chemical reaction between the hydrogen ions and the plurality of Zn nanoparticles.