公开(公告)号：US10597745B2

公开(公告)日：2020-03-24

申请号：US15102386

申请日：2014-12-05

Applicant: ArcelorMittal

Inventor： Josée Drillet ,  Véronique Hebert

IPC: C21D8/02 ,  C22C38/38 ,  C21D9/46 ,  C22C38/28 ,  C22C38/32 ,  C21D8/04 ,  C21D9/48 ,  C22C38/00 ,  C23C2/40 ,  C23C14/16 ,  C23C2/28 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C23C2/02 ,  C23C2/06 ,  C23C2/36

Abstract: A cold-rolled and annealed steel sheet is provided, the chemical composition of which comprises, the contents being expressed by weight percent: 0.10≤C≤0.13% 2.4≤Mn≤2.8% 0.30≤Si≤0.55% 0.30≤Cr≤0.56% 0.020≤Ti≤0.050% 0.0020≤B≤0.0040% 0.005≤Al≤0.050% Mo≤0.010% Nb≤0.040% 0.002≤N≤0.008% S≤0.005% P≤0.020%, the remainder consisting of iron and unavoidable impurities resulting from the smelting, the steel sheet having a microstructure consisting of, in surface proportion, martensite and/or lower bainite, said martensite comprising fresh martensite and/or self-tempered martensite, the sum of the surface proportions of martensite and lower bainite being comprised between 60 to 95%, 4 to 35% of low carbide containing bainite, 0 to 5% of ferrite, and less than 5% of retained austenite in island form.

公开(公告)号：US10584407B2

公开(公告)日：2020-03-10

申请号：US15539654

申请日：2015-12-24

Applicant: POSCO

Inventor： Min-Suk Oh ,  Sang-Heon Kim ,  Tae-Chul Kim ,  Jong-Sang Kim ,  Hyun-Chu Yun ,  Bong-Hwan Yoo ,  Il-Ryoung Sohn

IPC: C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C28/02 ,  C22C38/06 ,  C22C18/04 ,  C22C38/02 ,  C23C30/00 ,  C22C38/04 ,  B32B15/01 ,  B32B15/18 ,  B32B15/04

Abstract: Zn alloy plated steel material having excellent weldability and processed-part corrosion resistance and a method for production of Zn alloy plated steel material are provided. In the Zn alloy plated steel material comprising base steel material and a Zn alloy plating layer, the Zn alloy plating layer includes, by wt %, Al: 0.1-5.0%, Mg: 0.1-5.0%, as well as a remainder of Zn and inevitable impurities. The Zn alloy plated steel material includes a lower interface layer and an upper interface layer between the base steel material and the Zn alloy plating layer, wherein the lower interface layer is formed on the base steel material and has a dense structure, and the upper interface layer is formed on the lower interface layer and has a network-type or island-type structure.

公开(公告)号：US20200070476A1

公开(公告)日：2020-03-05

申请号：US16466459

申请日：2017-12-19

Applicant: POSCO

Inventor： Jin-You Kim

IPC: B32B15/01 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  C23C2/40 ,  C23C2/02

Abstract: Disclosed are a hot dip coated steel and a method for manufacturing the same, the hot dip coated steel comprising a hot rolled steel and a hot dip coated layer formed on the surface of the hot rolled steel, wherein the hot rolled steel comprises: by wt %, 0.05-0.15% of C, 0.5% or less of Si (excluding 0%), 0.5-1.5% of Mn, 0.01-0.05% of Nb, 0.005-0.05% of V, 0.03% or less of P (excluding 0%), 0.015% of S or less (excluding 0%), 0.05% or less of Al (excluding 0%), 0.01% or less of N (excluding 0%), and the balance of Fe and inevitable impurities; 90 area % or more of ferrite as the microstructure thereof; and 5,000-15,000/μm2 of V-based precipitates.

公开(公告)号：US10556287B2

公开(公告)日：2020-02-11

申请号：US15438502

申请日：2017-02-21

Applicant: Abbott Cardiovascular Systems Inc.

Inventor： John A. Simpson ,  Jeffrey F. Dooley ,  Matthew J. Gillick

IPC: B23K1/20 ,  B23K3/06 ,  B23K35/02 ,  B23K35/30 ,  C23C2/00 ,  C23C2/02 ,  C23C2/04 ,  C23C2/26 ,  C23C2/38 ,  B23K1/08 ,  C23C2/08 ,  B23K1/00 ,  B05C3/172 ,  B05C3/00 ,  B23K101/32

Abstract: A method of pretinning a guidewire core made of shape memory alloy and having an elongate axis, comprising: placing a ball of solder in a pocket in a soldering block; melting the ball of solder; holding a guidewire core over the ball of solder; lowering the guidewire core into the ball of solder; removing the guidewire from the ball of solder.

公开(公告)号：US20200040435A1

公开(公告)日：2020-02-06

申请号：US16335446

申请日：2017-01-25

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Katsuya NAKANO ,  Kunio HAYASHI ,  Yuri TODA ,  Eisaku SAKURADA ,  Akihiro UENISHI

IPC: C22C38/40 ,  B32B15/01 ,  C22C38/32 ,  C22C38/28 ,  C22C38/24 ,  C22C38/26 ,  C22C38/20 ,  C22C38/22 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  C23C2/06 ,  C23C2/40 ,  C23C2/02

Abstract: A steel sheet includes a predetermined chemical composition and a metal structure represented by, in area fraction, ferrite: 50% to 95%, granular bainite: 5% to 48%, martensite: 2% to 30%, and upper bainite, lower bainite, tempered martensite, retained austenite, and pearlite: 5% or less in total.

公开(公告)号：US10550457B2

公开(公告)日：2020-02-04

申请号：US15539654

申请日：2015-12-24

Applicant: POSCO

Inventor： Min-Suk Oh ,  Sang-Heon Kim ,  Tae-Chul Kim ,  Jong-Sang Kim ,  Hyun-Chu Yun ,  Bong-Hwan Yoo ,  Il-Ryoung Sohn

IPC: C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C28/02 ,  C22C38/06 ,  C22C18/04 ,  C22C38/02 ,  C23C30/00 ,  C22C38/04 ,  B32B15/01 ,  B32B15/18 ,  B32B15/04

Abstract: Zn alloy plated steel material having excellent weldability and processed-part corrosion resistance and a method for production of Zn alloy plated steel material are provided. In the Zn alloy plated steel material comprising base steel material and a Zn alloy plating layer, the Zn alloy plating layer includes, by wt %, Al: 0.1-5.0%, Mg: 0.1-5.0%, as well as a remainder of Zn and inevitable impurities. The Zn alloy plated steel material includes a lower interface layer and an upper interface layer between the base steel material and the Zn alloy plating layer, wherein the lower interface layer is formed on the base steel material and has a dense structure, and the upper interface layer is formed on the lower interface layer and has a network-type or island-type structure.

公开(公告)号：US10508326B2

公开(公告)日：2019-12-17

申请号：US14240943

申请日：2012-08-23

Applicant: Kwang-Geun Chin ,  Sun-Ho Jeon

Inventor： Kwang-Geun Chin ,  Sun-Ho Jeon

IPC: C22C38/38 ,  C22C38/08 ,  C22C38/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/14 ,  C22C38/58 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/50 ,  C22C38/54 ,  C23C2/02

Abstract: There is provided a high-manganese steel with superior coating adhesion and a method of producing a hot-dip galvanized steel sheet from same. According to an aspect of the present disclosure, a high-manganese steel is characterized by including, by weight, C: 0.3-1%, Mn: 8-25%, Al: 1-8%, Si: 0.1-3.0%, Ti: 0.01-0.2%, Sn: 0.06-0.2%, B: 0.0005-0.01%, with the remainder being Fe and inevitable impurities. The present disclosure can provide a high-manganese and hot-dip galvanized steel sheet with superior surface quality as well as with high strength and workability by preventing coating failures that may be caused by manganese.

公开(公告)号：US10472697B2

公开(公告)日：2019-11-12

申请号：US15547659

申请日：2016-01-27

Applicant: JFE STEEL CORPORATION

Inventor： Hidekazu Minami ,  Shinjiro Kaneko ,  Takeshi Yokota ,  Kazuhiro Seto

IPC: C21D9/46 ,  C22C38/02 ,  C22C38/60 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/04 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28

Abstract: A steel sheet has a microstructure that contains ferrite in an area ratio of 20% or more, martensite in an area ratio of 5% or more, and tempered martensite in an area ratio of 5% or more. The ferrite has a mean grain size of 20.0 μm or less. An inverse intensity ratio of γ-fiber to α-fiber in the ferrite is 1.00 or more and an inverse intensity ratio of γ-fiber to α-fiber in the martensite and the tempered martensite is 1.00 or more.

公开(公告)号：US10450642B2

公开(公告)日：2019-10-22

申请号：US15543062

申请日：2015-11-24

Applicant: JFE STEEL CORPORATION

Inventor： Hiroshi Hasegawa ,  Hideyuki Kimura ,  Yoshimasa Funakawa ,  Yoichi Makimizu ,  Yoshitsugu Suzuki

IPC: C23C2/40 ,  C23C2/28 ,  C22C38/04 ,  C22C38/02 ,  C22C38/06 ,  C21D9/46 ,  C23C2/12 ,  C23C30/00 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/24 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/16 ,  B32B15/01 ,  C22C38/26 ,  C22C38/38 ,  B32B15/18 ,  B32B15/04 ,  C23C2/02 ,  C23C2/06 ,  C22C38/58

Abstract: A high-strength galvanized steel sheet that includes a chemical composition containing, by mass %, C: 0.15% or more and 0.25% or less, Si: 0.50% or more and 2.5% or less, Mn: 2.3% or more and 4.0% or less, P: 0.100% or less, S: 0.02% or less, Al: 0.01% or more and 2.5% or less, and Fe and inevitable impurities. The steel sheet having a microstructure containing, by an area percentage basis, a tempered martensite phase: 30% or more and 73% or less, a ferrite phase: 25% or more and 68% or less, a retained austenite phase: 2% or more and 20% or less, and other phases: 10% or less (including 0%), the other phases containing a martensite phase: 3% or less (including 0%) and a bainitic ferrite phase: less than 5% (including 0%).

公开(公告)号：US10407751B2

公开(公告)日：2019-09-10

申请号：US15323258

申请日：2015-07-03

Applicant: ArcelorMittal

Inventor： Stavros Fountoulakis ,  Jean Philippe Masse ,  Dongwei Fan

IPC: C21D9/573 ,  B05C9/10 ,  B05C9/12 ,  B05C9/14 ,  C23C2/00 ,  C23C2/02 ,  C23C2/06 ,  C23C2/40 ,  C21D9/60 ,  C23C2/28 ,  B05C3/12

Abstract: A multipurpose continuous processing line able for heat treating and hot dip coating a steel strip containing: an annealing section (1) for heating the steel strip to a predetermined annealing temperature and for maintaining the steel strip at said annealing temperature, a first transfer section (2), an overaging section (3) able to maintain the temperature of the steel strip between 300° C. and 700° C., a second transfer section (4) able to adjust the temperature of the steel strip to allow the hot dip coating of the strip and, a hot dip coating section (5), wherein the first transfer section (2) includes, in sequence, a cooling section (21) and a heating section (22).