公开(公告)号：US20250051867A1

公开(公告)日：2025-02-13

申请号：US18721633

申请日：2022-12-21

Applicant: POSCO CO., LTD

Inventor： Jae-Song Kim ,  Il-Nam Yang ,  Seonghoon Min

IPC: C21D8/02 ,  C21D1/26 ,  C21D3/04 ,  C21D9/46 ,  C21D10/00 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C23C30/00

Abstract: A grain oriented electrical steel sheet according to an exemplary embodiment of the present invention includes a grain oriented electrical steel sheet base material and a metal oxide layer present on both sides of the grain oriented electrical steel sheet base material. A maximum Al fraction in the metal oxide layer is 0.15 to 1.0 wt %, and a ratio (DWL/DWS) of an average magnetic domain width (DWL) of a side with a large average magnetic domain width to an average magnetic domain width (DWS) of a side with a small average magnetic domain width of one side and the other side of the electrical steel sheet base material is 1.2 to 1.8.

公开(公告)号：US20240425959A1

公开(公告)日：2024-12-26

申请号：US18576365

申请日：2022-05-17

Applicant: JFE STEEL CORPORATION

Inventor： Hidekazu MINAMI ,  Kazuki ENDOH ,  Yuki TOJI

IPC: C22C38/58 ,  C21D1/04 ,  C21D1/26 ,  C21D9/46 ,  C21D9/56 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/60 ,  C23C2/06

Abstract: Provided is a continuous annealing line capable of producing a steel sheet excellent in hydrogen embrittlement resistance. A continuous annealing line 100 includes: a payoff reel 10 to feed a cold-rolled steel sheet S; an annealing furnace 20 to continuously anneal the cold-rolled steel sheet S and including a heating zone 22, a soaking zone 24, and a cooling zone 26; a downstream line 30; a tension reel 50 configured to coil the cold-rolled steel sheet S; and a vibration application device 60 or 70 configured to apply vibration to the cold-rolled steel sheet S being passed from the cooling zone 26 to the tension reel 50 so that the cold-rolled steel sheet is caused to vibrate at a frequency of 100 Hz or more and 100,000 Hz or less and a maximum amplitude of 10 nm or more and 500 μm or less.

公开(公告)号：US20240410040A1

公开(公告)日：2024-12-12

申请号：US18699352

申请日：2022-09-09

Applicant: Siemens Energy Global GmbH & Co. KG

Inventor： Torsten Neddemeyer ,  Bora Kocdemir ,  Axel Bublitz

IPC: C22C38/58 ,  C21D1/25 ,  C21D1/26 ,  C21D6/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50

Abstract: An alloy, including at least (in wt. %): carbon (C) 0.03%-0.08%, silicon (Si) 0.2%-0.4%, manganese (Mn) 1.6%-2.0%, molybdenum (Mo) 4.0%-5.0%, chromium (Cr) 20.0%-25.0%, nickel (Ni) 24.0%-27.0%, vanadium (V) 0.25%-0.35%, titanium (Ti) 2.0%-2.3%, aluminum (Al) 0.4%-0.6%, boron (B) 0.004%-0.006%, iron (Fe).

公开(公告)号：US20240360538A1

公开(公告)日：2024-10-31

申请号：US18287864

申请日：2022-04-19

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Sixin Zhao ,  Jiaqiang Gao ,  Zongze Huang

IPC: C22C38/26 ,  C21D1/18 ,  C21D1/26 ,  C21D7/13 ,  C21D9/28 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/24 ,  C22C38/28

CPC classification number: C22C38/26 ,  C21D1/18 ,  C21D1/26 ,  C21D7/13 ,  C21D9/28 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/24 ,  C22C38/28

Abstract: Disclosed are a steel for a high-temperature carburized gear shaft and a manufacturing method for the steel. The steel for the high-temperature carburized gear shaft comprises the following chemical components in percentage by mass: 0.17-0.22% of C, 0.05-0.35% of Si, 0.80-1.40% of Mn, 0.010-0.035% of S, 0.80-1.40% of Cr, 0.020-0.046% of Al, 0.006-0.020% of N, 0.002-0.030% of Nb, V≤0.02%, and Ti≤0.01%. Also disclosed is a manufacturing method for the steel for the high-temperature carburized gear shaft, comprising the steps of: smelting and casting; heating; forging or rolling; and finishing. By reasonably controlling chemical element compositions of the steel, the steel for the gear shaft in the present invention can maintain proper austenite grain size and stability at high temperature, maintains 5-8 grades of the austenite grain size before and after the high-temperature vacuum carburizing at 940-1050° C., can be effectively applied to high-end parts such as a gearbox for a vehicle or a speed reducer and a differential of a new energy vehicle, and has good application prospects and value.

公开(公告)号：US20240327941A1

公开(公告)日：2024-10-03

申请号：US18251034

申请日：2021-09-01

Applicant: Siemens Energy Global GmbH & Co. KG

Inventor： Torsten Neddemeyer ,  Bora Kocdemir ,  Axel Bublitz ,  Karsten Kolk

IPC: C21D6/00 ,  C21D1/26 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60

CPC classification number: C21D6/004 ,  C21D1/26 ,  C21D6/005 ,  C21D6/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60 ,  C21D2211/001

Abstract: An alloy, a raw workpiece, a component and a method contain or create austenites. The new alloy allows austenites to be formed or treated at higher temperatures, with new heat treatments also being used. Various heat treatments may be carried out with reference to the strength/toughness balance and notch sensitivity.

公开(公告)号：US20240186040A1

公开(公告)日：2024-06-06

申请号：US18114417

申请日：2023-02-27

Applicant: KITE MAGNETICS

Inventor： Richard PARSONS

IPC: H01F1/153 ,  C21D1/26 ,  C21D9/52 ,  C22C45/00 ,  H02K1/02

CPC classification number: H01F1/1535 ,  C21D1/26 ,  C21D9/52 ,  C22C45/008 ,  H01F1/15333 ,  H02K1/02 ,  C21D2201/03 ,  C22C2200/04

Abstract: A Continuous Ultra-Rapid Annealing (CURA) method for producing a nanocrystalline alloy is provided. The method includes placing amorphous ribbons on a first reel, preheating a Cu wheel to a temperature of about 750° K to about 800° K, and unwinding the amorphous ribbons from the first reel to a second reel. The methods include directly contacting the amorphous ribbons between the first reel and the second reel with the Cu wheel for a length of time and under tension to produce the nanocrystalline alloy. The methods include winding the nanocrystalline alloy on the second reel.

公开(公告)号：US11993823B2

公开(公告)日：2024-05-28

申请号：US16544127

申请日：2019-08-19

Applicant: UNITED STATES STEEL CORPORATION

Inventor： David Paul Hoydick ,  Eduardo Augusto Silva ,  Matthew Michael McCosby

IPC: 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 classification number: 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

Abstract: 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：US11959158B2

公开(公告)日：2024-04-16

申请号：US17501193

申请日：2021-10-14

Applicant: University of Science & Technology Beijing

Inventor： Jinfeng Huang ,  Jin Zhang ,  Chao Zhao ,  Cheng Zhang

IPC: C22C38/46 ,  C21D1/18 ,  C21D1/26 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54

CPC classification number: C22C38/46 ,  C21D1/18 ,  C21D1/26 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54

Abstract: A low-carbon and low alloy hot-work die steel with a high toughness at low temperatures and a high strength at high temperatures and a high hardenability, comprises the following components: C: 0.15-0.35%, Si: 0.40-0.90%, Mn: ≤0.80%, Cr: 1.50-2.40%, Ni: 2.50-4.50%, Mo: 1.00-1.60%, V: 0.10-0.40%, W: 0.20-0.90%, P: ≤0.02%, S≤0.02%, and a balance of Fe matrix and other inevitable impurities. The above percentages are mass percentages. The material of the present invention can have a V notch impact energy of 30 J or more than 30 J at −40° C., a high temperature strength of 380 MPa or more at 700° C., and a hardenability of 200 mm or more to ensure the consistency of internal and external microstructures. The materials of the present invention can be applied to hot-work molds used in special working conditions that require high toughness at low temperatures, high strength at high temperatures and high hardenability.

公开(公告)号：US20240084411A1

公开(公告)日：2024-03-14

申请号：US18351267

申请日：2023-07-12

Applicant: SCREEN Holdings Co., Ltd.

Inventor： Tomohiro UENO ,  Ryo KISHIMOTO ,  Kazuhiro KONDO

IPC: C21D1/26 ,  G01N21/88 ,  H04N23/60 ,  H04N23/73

CPC classification number: C21D1/26 ,  G01N21/8806 ,  H04N23/64 ,  H04N23/665 ,  H04N23/73

Abstract: A reflectance measurement part measures the reflectance of a back surface of a semiconductor wafer. An imaging parameter of a camera is adjusted based on the measured reflectance. The imaging parameter includes exposure time and sensitivity of the camera. The camera with the adjusted imaging parameter images the back surface of the semiconductor wafer to determine the presence or absence of a flaw from the obtained image data. The camera is able to perform appropriate imaging in accordance with the reflectance of the back surface of the semiconductor wafer. Thus, a flaw in the back surface of the semiconductor wafer is detected with reliability even if the reflectance of the back surface is varied due to the deposition of a thin film on the back surface.

公开(公告)号：US11884991B2

公开(公告)日：2024-01-30

申请号：US17213881

申请日：2021-03-26

Applicant: Heraeus Materials Singapore Pte., Ltd.

Inventor： Zhen Yun Liu ,  Muhammad Shahzali Bin Jolani ,  Yang Yu

IPC: C21D9/52 ,  C21D1/26 ,  C21D8/06 ,  B21F1/02 ,  C21D1/84

CPC classification number: C21D9/52 ,  B21F1/02 ,  C21D1/26 ,  C21D1/84 ,  C21D8/06 ,  C21D9/525

Abstract: A method for producing a further wire, wherein the method includes, providing a first wire and feeding the first wire through a furnace to obtain the further wire. A further cast of the further wire is larger than a first cast of the first wire.