公开(公告)号：US12215401B2

公开(公告)日：2025-02-04

申请号：US17422048

申请日：2020-01-16

Applicant: NIPPON STEEL CORPORATION

Inventor： Shinsuke Takatani ,  Yoshihiro Arita ,  Shunsuke Okumura ,  Shohji Nagano

IPC: C22C38/00 ,  C21D8/02 ,  C21D8/12 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/16 ,  C22C38/60

Abstract: A grain-oriented electrical steel sheet of the present invention has a base steel sheet, an amorphous oxide layer formed on the base steel sheet, and a tension-insulation coating formed on the amorphous oxide layer, in which the base steel sheet contains, as a chemical composition, by mass %, C: 0.085% or less, Si: 0.80 to 7.00%, Mn: 1.50% or less, acid-soluble Al: 0.065% or less, S: 0.013% or less, Cu: 0 to 0.80%, N: 0 to 0.012%, P: 0 to 0.50%, Ni: 0 to 1.00%, Sn: 0 to 0.30%, and Sb: 0 to 0.30%, a remainder is Fe and an impurity, a surface glossiness Gs20(A) in a direction parallel to a rolling direction is 2.0 to 70, and a surface glossiness Gs20(B) in a direction perpendicular to the rolling direction is 2.0 to 70.

公开(公告)号：US20250024562A1

公开(公告)日：2025-01-16

申请号：US18899822

申请日：2024-09-27

Applicant: ACR II GLASS AMERICA INC.

Inventor： Olivier Farreyrol

IPC: H05B3/86 ,  C03C27/04 ,  C22C38/08 ,  C22C38/10 ,  H01R4/02 ,  H01R43/02 ,  H05B3/06 ,  H05B3/84

Abstract: A vehicle window glass comprises a glass substrate layer, an electrically conductive layer forming a conductive pattern over the glass substrate, a lead-free solder layer on the conductive layer and a metal plate element of an electrical connector on the solder layer. Optionally a colored ceramic band layer is sintered between the glass substrate layer and the conductive layer. The thickness of the metal plate element is between 0.5 mm and 0.7 mm.5

公开(公告)号：US20250014793A1

公开(公告)日：2025-01-09

申请号：US18709957

申请日：2022-10-31

Applicant: JEF Steel Corporation

Inventor： Shigehiro TAKAJYO ,  Yoshiaki ZAIZEN

IPC: H01F1/147 ,  C21D6/00 ,  C21D8/12 ,  C21D9/46 ,  C22C38/00 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/32 ,  C22C38/34 ,  C22C38/60

Abstract: A non-oriented electrical steel sheet is provided. The steel sheet has a composition including, in mass %, C: 0.0050% or less, Si: 1.0% to 7.5%, Mn: 2.00% or less, P: 0.10% or less, and S: 0.0040% or less, with the rest being Fe and unavoidable impurities. The thickness of the steel sheet is 0.20 mm or less. Regarding an ODF, the maximum intensity is obtained within Φ=0°, and the intensity of an orientation in which ϕ1=45°, ϕ2=45°, and Φ=0° is 4.0 or more. A method for producing the steel sheet includes subjecting a steel material having a predetermined ingredient composition to hot rolling, two cold rolling with intermediate annealing between each cold rolling, and final annealing. The rolling reduction of the first cold rolling is 92% or more, and the rolling reduction of the second cold rolling is between 30% and 80%.

公开(公告)号：US12188103B2

公开(公告)日：2025-01-07

申请号：US17770116

申请日：2020-10-08

Applicant: JFE Steel Corporation

Inventor： Kazuki Endoh ,  Yoshiyasu Kawasaki ,  Yuki Toji

IPC: C21D9/46 ,  B32B15/01 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/38 ,  C22C38/60 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

Abstract: Provided is a high strength steel sheet that has a predetermined chemical composition and is manufactured under optimum conditions, the high strength steel sheet having a steel microstructure including, by area, ferrite: 30% or more and 80% or less, martensite: 5% or more and 35% or less, and retained austenite: 8% or more, wherein the quotient of the area fraction of grains of the retained austenite, the grains having an aspect ratio of 2.0 or more and a minor axis length of 1 μm or less, divided by the total area fraction of the retained austenite is 0.3 or more, wherein the quotient of the average Mn content (mass %) in the retained austenite divided by the average Mn content (mass %) in the ferrite is 1.5 or more.

公开(公告)号：US12173391B2

公开(公告)日：2024-12-24

申请号：US18271138

申请日：2022-03-14

Applicant: NIPPON STEEL CORPORATION

Inventor： Keitaro Matsuda ,  Takuya Mitsunobu ,  Masaaki Uranaka ,  Jun Maki ,  Hiroshi Takebayashi

IPC: C22C38/38 ,  C21D1/84 ,  C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C23C2/06 ,  C23C2/40

Abstract: High strength steel sheet and plated steel sheet having high plateability, LME resistance, and hydrogen embrittlement resistance, that is, steel sheet containing C: 0.05 to 0.40%, Si: 0.2 to 3.0%, Mn: 0.1 to 5.0%, and sol. Al: 0.4 to 1.50%, having an internal oxidation layer including fine granular oxides, coarse granular oxides, and grain boundary oxides in a surface layer of the steel sheet, a number density of fine granular oxides in the internal oxidation layer being 4.0/μm2 or more, a number density of coarse granular oxides in the internal oxidation layer being 4.0/25 μm2 or more, having a Ratio A of the length of the grain boundary oxides projected on the surface of the steel sheet to the length of the surface of the steel sheet when examining a cross-section of the surface layer of the steel sheet being 50% or more and 100% or less, and including a surface depleted layer with a steel composition not including oxides which satisfies, by mass %, Si≤0.6% and Al≥0.05% at a depth of ½ of the average depth of the internal oxidation layer calculated from the cross-sectional SEM image of the steel sheet, and a plated steel sheet using the same.

公开(公告)号：US20240417820A1

公开(公告)日：2024-12-19

申请号：US18273950

申请日：2022-03-01

Applicant: NIPPON STEEL CORPORATION

Inventor： Takuya NISHIO ,  Ryosuke NAKAMURA ,  Masafumi AZUMA

IPC: C21D9/46 ,  B32B15/01 ,  C21D1/18 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/38 ,  C23C2/02 ,  C23C2/28 ,  C23C2/40

Abstract: This cold-rolled steel sheet has a predetermined chemical composition, in which a metallographic structure of a t/4 portion, which is at a ¼ position of a sheet thickness t from a surface of the cold-rolled steel sheet in a sheet thickness direction, includes, by volume percentage, retained austenite: 2.5% or more and 10.0% or less, tempered martensite: 80.0% or more and 97.5% or less, ferrite and bainite: 0.0% or more and 15.0% or less in total, and martensite: 0.0% or more and 3.0% or less, and in a surface layer area at a position 25 μm away from the surface in the sheet thickness direction, an amount of solute Si is 0.30% or more and 1.50% or less by mass %, a volume percentage of ferrite in the metallographic structure is 0.0% or more and 20.0% or less, and a density of ferrite grains having a grain size of 15 μm or more is 0 grains/mm2 or more and 3,000 grains/mm2 or less.

公开(公告)号：US12139771B2

公开(公告)日：2024-11-12

申请号：US17425453

申请日：2019-10-18

Applicant: JFE Steel Corporation

Inventor： Lingling Yang ,  Tatsuya Nakagaito ,  Yuki Takeda

IPC: C21D9/46 ,  B32B15/01 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/02 ,  C23C2/28 ,  C23C2/40

Abstract: A high-strength steel sheet that has a predetermined component composition, that has a steel microstructure in which an area percentage of ferrite ranges from 5% to 50% in a thickness cross-section in a rolling direction, a total area percentage of fresh martensite and retained γ ranges from 2% to 30%, each of the fresh martensite and the retained γ has an average grain size of 5 μm or less, and a ratio of the fresh martensite and the retained γ adjacent only to ferrite with respect to the fresh martensite and the retained γ from a surface to 200 μm in the thickness direction is 30% or less in total area percentage, and that has a yield strength of 550 MPa or more.

公开(公告)号：US12134810B2

公开(公告)日：2024-11-05

申请号：US17801145

申请日：2021-05-07

Applicant: NIPPON STEEL CORPORATION

Inventor： Daisuke Maeda ,  Yuri Toda ,  Shingo Fujinaka

IPC: C22C38/02 ,  B21D22/02 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18

Abstract: These steel sheet for hot stamping and hot-stamping formed body have predetermined chemical composition and metallographic structures, and, in textures of a surface layer region and an inside region, ratios between a pole density of an orientation group consisting of {001} to {001} and a pole density of an orientation group consisting of {111} to {111} are controlled.

公开(公告)号：US12125620B2

公开(公告)日：2024-10-22

申请号：US17634321

申请日：2019-08-13

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Ichiro Ishikawa ,  Takeshi Noda ,  Kazuhiro Ogawa

IPC: H01F1/147 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C23C8/32 ,  H01F1/16

CPC classification number: H01F1/147 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C23C8/32 ,  H01F1/16

Abstract: An electrical steel sheet includes a main surface and an end surface. The electrical steel sheet includes a base material part and an end surface nitrided layer that is provided on the end surface in a manner adjacent to the base material part and that contains nitrogen. The end surface nitrided layer has a surface hardness of 430 HV or more and 1250 HV or less. The end surface contains nitrogen in an amount higher than a nitrogen concentration at the main surface.

公开(公告)号：US12109618B2

公开(公告)日：2024-10-08

申请号：US17197266

申请日：2021-03-10

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Ibrahim Ucok ,  Yan Cui ,  Srikanth Chandrudu Kottilingam ,  Surinder Singh Pabla

IPC: B32B15/01 ,  B22F3/15 ,  B22F3/24 ,  B22F5/00 ,  B22F5/04 ,  B22F10/14 ,  B22F10/28 ,  B22F10/62 ,  B22F10/64 ,  B23K15/00 ,  B23K26/00 ,  B23K26/342 ,  B23K26/70 ,  B32B3/30 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00 ,  B33Y80/00 ,  C22C19/05 ,  C22C19/07 ,  C22C30/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C23C4/08 ,  C23C4/134 ,  C23C14/16 ,  C23C14/28 ,  C23C16/06 ,  C23C16/44 ,  C23C18/16 ,  C23C18/32 ,  F01D5/28 ,  F01D25/00 ,  F01D25/24 ,  B23K101/00

CPC classification number: B22F3/15 ,  B22F3/24 ,  B22F5/009 ,  B22F5/04 ,  B22F10/14 ,  B22F10/28 ,  B22F10/62 ,  B22F10/64 ,  B23K15/0086 ,  B23K15/0093 ,  B23K26/0006 ,  B23K26/342 ,  B23K26/70 ,  B32B3/30 ,  B32B15/01 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00 ,  B33Y80/00 ,  C22C19/055 ,  C22C19/056 ,  C22C19/057 ,  C22C19/07 ,  C22C30/02 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/105 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C23C4/08 ,  C23C4/134 ,  C23C14/16 ,  C23C14/28 ,  C23C16/06 ,  C23C16/44 ,  C23C18/1637 ,  C23C18/32 ,  F01D5/28 ,  F01D25/005 ,  F01D25/24 ,  B22F2003/242 ,  B22F2301/15 ,  B22F2301/35 ,  B22F2998/10 ,  B23K2101/001 ,  F05D2300/17 ,  Y02P10/25 ,  B22F2998/10 ,  B22F10/28 ,  B22F10/62 ,  B22F2003/242 ,  B22F10/64 ,  B22F3/15

Abstract: A process includes forming a printed article having an external surface and at least one microfeature with an internal surface by additive manufacture, coating the external surface and the internal surface of the printed article with a metallic microlayer to form a coated article, and densifying the coated article to form a component. After formation, the printed article has a porosity such that the printed article is not at full density. A densified component includes a printed article having an external surface and at least one microfeature with an internal surface and a metallic microlayer coating the external surface and the internal surface of the printed article. The printed article is formed by additive manufacture.