公开(公告)号：US11578394B2

公开(公告)日：2023-02-14

申请号：US17751338

申请日：2022-05-23

申请人： NIPPON STEEL CORPORATION

发明人： Tetsuya Namegawa ,  Manabu Hoshino ,  Shinichi Omiya ,  Takayuki Kagaya

IPC分类号： C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/54 ,  C21D1/18 ,  C21D6/00 ,  C21D8/02 ,  C22C38/16 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

摘要： A nickel-containing steel for low temperature according to an aspect of the present invention has a chemical composition within a predetermined range, in which a metallographic structure of a thickness middle portion contains 2.0 vol % to 20.0 vol % of an austenite phase, an average grain size of prior austenite grains is 3.0 μm to 15.0 μm, an average aspect ratio of the prior austenite grains is 1.0 to 2.4, a plate thickness is 4.5 mm to 30 mm, the chemical composition and the average grain size of the prior austenite grains are further limited depending on the plate thickness, a yield stress at room temperature is 460 MPa to 710 MPa, and a tensile strength at the room temperature is 560 MPa to 810 MPa.

公开(公告)号：US11577346B2

公开(公告)日：2023-02-14

申请号：US16332308

申请日：2017-09-04

申请人： Kobe Steel, Ltd.

发明人： Keito Ishizaki ,  Yimin Yuan ,  Hidenori Nako ,  Tomoko Sugimura ,  Yoshitomi Okazaki

IPC分类号： B23K35/30 ,  B23K35/368 ,  C22C38/08 ,  C22C38/46 ,  B23K35/362 ,  C22C38/48 ,  C22C38/42 ,  C22C38/44 ,  B23K35/36 ,  C22C38/40 ,  C22C38/06 ,  C22C38/00 ,  C22C38/16 ,  C22C38/12 ,  B23K35/02

摘要： Disclosed herein is an electroslag welding wire containing, by mass % based on total mass of the wire: C: more than 0% and 0.07% or less; Si: more than 0% and 0.50% or less; Mn: more than 0% and 1.0% or less; Ni: 6.0 to 15.0%; and Fe: 79% or more. The electroslag welding wire satisfies the following relationship (1): 0.150≤C+Si/30+Mn/20+Ni/60≤0.300 (1).

公开(公告)号：US11577291B2

公开(公告)日：2023-02-14

申请号：US16342015

申请日：2017-10-18

申请人： JFE STEEL CORPORATION

发明人： Yuiko Ehashi ,  Masanori Takenaka ,  Takeshi Imamura ,  Minoru Takashima

IPC分类号： B21B45/08 ,  C21D6/00 ,  C22C38/40 ,  C22C38/34 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/00 ,  C21D9/46 ,  C21D8/12 ,  C22C38/60 ,  C22C38/02 ,  C21D8/00

摘要： With a hot-rolled steel sheet for electrical steel sheet production having a scale layer on the surface, where the surface of the steel sheet has a lightness L* as defined in JIS Z 8781-4: 2013 satisfying 30≤L*≤50, and chromaticities a* and b* as defined in JIS Z 8781-4: 2013 satisfying −1≤a*≤2 and −5≤b*≤3 respectively, and with one end portion in the longitudinal direction of a coil as a reference, a color difference ΔEab* as defined in JIS Z 8781-4: 2013 at the central portion and at the opposite end portion satisfies ΔEab*≤8, it is possible to obtain a grain-oriented electrical steel sheet where the variation of properties in a product coil is small.

公开(公告)号：US20230033491A1

公开(公告)日：2023-02-02

申请号：US17785846

申请日：2020-12-14

申请人： POSCO

发明人： Byoung Ho Lee ,  Young-Kwang Hong

IPC分类号： C21D9/46 ,  C22C38/14 ,  C22C38/06 ,  C22C38/16 ,  C22C38/60 ,  C22C38/00 ,  C22C38/08 ,  C21D8/02 ,  C22C38/04

摘要： The present invention provides a steel sheet having excellent wear resistance and composite corrosion resistance, and a method for manufacturing same.
A corrosion-resistant steel sheet according to an embodiment of the present invention comprises, in wt %: 0.04 to 0.10% of carbon (C); 0.1% or less (excluding 0%) of silicon (Si); 0.20 to 0.35% of copper (Cu); 0.1% to 0.2% of nickel (Ni); 0.05 to 0.15% of antimony (Sb); 0.07 to 0.22% of tin (Sn); 0.05 to 0.15% of titanium (Ti); 0.01% or less (excluding 0%) of sulfur (S); 0.005% or less (excluding 0%) of nitrogen (N); the remainder iron (Fe); and unavoidable impurities, and satisfies formulas 1 and 2 below: [Ni]/[Cu]≥0.5  [Formula 1] 48×([Ti]/48−[S]/32−[N]/14)≥0.04  [Formula 2] wherein, in formulas 1 and 2, [Ni], [Cu], [Ti], [S], and [N] represent contents (wt %) of Ni, Cu, Ti, S, and N contained in the steel sheet, respectively.

公开(公告)号：US11566303B2

公开(公告)日：2023-01-31

申请号：US16958097

申请日：2019-02-15

申请人： NIPPON STEEL CORPORATION

发明人： Takeshi Kubota ,  Takeaki Wakisaka ,  Masafumi Miyazaki ,  Takashi Morohoshi

IPC分类号： C21D9/46 ,  C21D8/12 ,  C21D6/00 ,  C22C38/16 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  H01F1/147

摘要： A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: 0.0003% or greater and less than 0.0015% in total, a parameter Q represented by Q=[Si]+2×[Al]−[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R−(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.

公开(公告)号：US20230025020A1

公开(公告)日：2023-01-26

申请号：US17935779

申请日：2022-09-27

申请人： Murata Manufacturing Co., Ltd.

发明人： Luan JIAN ,  Kazuhiro HENMI

IPC分类号： H01F1/147 ,  B22F1/054 ,  C22C38/02 ,  C22C38/00 ,  C22C38/16 ,  B22F1/065

摘要： A soft magnetic alloy powder includes soft magnetic alloy particles having an amorphous phase. Each of the soft magnetic alloy particles has chemical composition represented by FeaSibBcCdPeCufSngM1hM2i, where M1 is one or more elements of Co and Ni, M2 is one or more elements of Ti, Zr, Hf, Nb, Ta, Mo, W, Cr, Al, Mn, Ag, V, Zn, As, Sb, Bi, Y, and a rare earth element, and 79≤a+h+i≤86, 0≤b≤5, 7.2≤c≤12.2, 0.1≤d≤3, 7.3≤c+d≤13.2, 0.5≤e≤10, 0.4≤f≤2, 0.3≤g≤6, 0≤h≤30, 0≤i≤5, and a+b+c+d+e+f+g+h+i=100 (parts by mol) are satisfied.

公开(公告)号：US20230023569A1

公开(公告)日：2023-01-26

申请号：US17787009

申请日：2020-12-14

申请人： POSCO

发明人： Byoung Ho LEE

IPC分类号： C21D9/46 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/02 ,  C22C38/00 ,  C22C38/60 ,  C21D8/02 ,  C21D6/00 ,  B21B1/24

摘要： The present invention provides a steel sheet having excellent wear resistance and composite corrosion resistance, and a method of manufacturing same. According to one example of the present invention, a corrosion-resistant steel sheet having excellent wear resistance and composite corrosion resistance comprises, in wt %: 0.04-0.10% of carbon (C); 0.10% or less (excluding 0%) of silicon (Si); 0.20-0.35% of copper (Cu); 0.1-0.2% of nickel (Ni); 0.05-0.15% of antimony (Sb); 0.07-0.22% of tin (Sn); 0.05-0.15% of titanium (Ti); 0.01% or less (excluding 0%) of sulfur (S); 0.005% or less (excluding 0%) of nitrogen (N); 0.05-0.15% of molybdenum (Mo); and the balance of iron (Fe) and inevitable impurities, and satisfies formula 1 and formula 2 below. [Ni]/[Cu]≥0.5   [Formula 1] 48×([Ti]/48−[S]/32−[N]/14)≥0.04   [Formula 2] Here, in formula 1 and formula 2, [Ni], [Cu], [Ti], [S], and [N] represent Ni, Cu, Ti, S, and N content (wt %) in the steel sheet, respectively.

公开(公告)号：US11562840B2

公开(公告)日：2023-01-24

申请号：US16978155

申请日：2019-03-22

申请人： NIPPON STEEL CORPORATION

发明人： Takashi Kataoka ,  Ichiro Tanaka ,  Haruhiko Atsumi ,  Kazutoshi Takeda ,  Hirotoshi Tada

IPC分类号： C21D9/46 ,  H01F1/147 ,  C21D6/00 ,  C21D8/12 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  C22C38/20 ,  C22C38/34 ,  C22C38/60

摘要： A grain-oriented electrical steel sheet includes: a base steel sheet having a predetermined chemical composition; a glass coating provided on the surface of the base steel sheet; and a tension-applying insulation coating provided on the surface of the glass coating, in which linear thermal strains having, a predetermined angle (φ) with respect to a transverse direction which is a direction orthogonal to a rolling direction are periodically formed on the surface of the tension-applying insulation coating at predetermined intervals along the rolling direction, a full width at half maximum F1 on the linear thermal strain and a full width at half maximum F2 at an intermediate position between the two linear thermal strains adjacent to each other satisfy 0.00

公开(公告)号：US20230021013A1

公开(公告)日：2023-01-19

申请号：US17784444

申请日：2020-12-17

申请人： POSCO

发明人： Se Il LEE ,  Hyunwoo MUN

IPC分类号： C22C38/08 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/04 ,  C22C38/16 ,  C21D9/46 ,  C21D8/02

摘要： A non-oriented electrical steel sheet according to an embodiment of the present invention includes, in wt %, Si: 1.5% or less, C: 0.01% or less (excluding 0%), Mn: 0.03 to 3%, P: 0.01 to 0.2%, S: 0.001 to 0.02%, Al: 0.01% or less (excluding 0%), N: 0.005% or less (excluding 0%), Cu: 0.02 to 0.3%, 0.0001 to 0.005 wt % of Ca and Mg either alone or in total, 0.001 to 0.2 wt % of Sb and Sn either alone or in total, and a balance of Fe and inevitable impurities.

公开(公告)号：US11557413B2

公开(公告)日：2023-01-17

申请号：US17423013

申请日：2020-01-16

申请人： NIPPON STEEL CORPORATION

发明人： Yoshiyuki Ushigami ,  Masato Mizokami ,  Shingo Okada ,  Yoichi Zaizen ,  Shinji Yamamoto

IPC分类号： C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  H01F1/147 ,  C21D3/04 ,  C21D6/00 ,  C21D8/00 ,  C21D8/12 ,  C21D9/46 ,  C22C38/14 ,  C22C38/16

摘要： A grain-oriented electrical steel sheet according to the present invention includes a silicon steel sheet as a base steel sheet, and when an average value of amplitudes in a wavelength range of 20 to 100 μm among wavelength components obtained by performing Fourier analysis on a measured cross-sectional curve parallel to a sheet width direction of the silicon steel sheet is set as ave-AMPC100, ave-AMPC100 is 0.0001 to 0.050 μm.