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1.发明申请公开(公告)号：US20200350104A1
公开(公告)日：2020-11-05
申请号：US16957313
申请日：2019-02-15
Applicant: NIPPON STEEL CORPORATION
Inventor： Takeshi KUBOTA , Takeaki WAKISAKA , Masafumi MIYAZAKI , Takashi MOROHOSHI
Abstract: 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: greater than 0.0100% and not greater than 0.0250% 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.
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公开(公告)号：US20200152363A1
公开(公告)日：2020-05-14
申请号：US16495976
申请日：2017-06-02
Applicant: NIPPON STEEL CORPORATION
Inventor： Takeshi KUBOTA , Takashi MOROHOSHI , Masafumi MIYAZAKI
Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]−[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 40% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 μm to 100 μm.
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公开(公告)号：US20200017942A1
公开(公告)日：2020-01-16
申请号：US16495993
申请日：2017-06-02
Applicant: NIPPON STEEL CORPORATION
Inventor： Takeshi KUBOTA , Takashi MOROHOSHI , Masafumi MIYAZAKI
Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]−[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 10% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 μm to 100 μm.
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4.发明申请公开(公告)号：US20190316221A1
公开(公告)日：2019-10-17
申请号：US16470078
申请日：2018-01-16
Applicant: NIPPON STEEL CORPORATION
Inventor： Hiroyoshi YASHIKI , Yoshiaki NATORI , Kazutoshi TAKEDA , Susumu MUKAWA , Takuya MATSUMOTO , Koji FUJITA , Takashi MOROHOSHI , Masafumi MIYAZAKI
Abstract: A non-oriented electrical steel sheet contains, as a chemical composition, by mass %, C: more than 0% and 0.0050% or less, Si: 3.0% to 4.0%, Mn: 1.0% to 3.3%, P: more than 0% and less than 0.030%, S: more than 0% and 0.0050% or less, sol. Al: more than 0% and 0.0040% or less, N: more than 0% and 0.0040% or less, O: 0.0110% to 0.0350%, Sn: 0% to 0.050%, Sb: 0% to 0.050%, Ti: more than 0% and 0.0050% or less, and a remainder including Fe and impurities, in which Sn+Sb: 0.050% or less, Si−0.5×Mn: 2.0% or more, and an O content in a sheet thickness central portion excluding a surface layer portion which is a range from a front surface and a rear surface to a position of 10 μm in a depth direction is less than 0.0100%.
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Patent Agency Ranking
公开(公告)号：US20230028362A1
公开(公告)日：2023-01-26
申请号：US17777574
申请日：2020-11-25
Applicant: NIPPON STEEL CORPORATION
Inventor： Kazuhisa KUSUMI , Katsuhiro FUCHIGAMI , Takashi ARAMAKI , Hideaki IRIKAWA , Haruhiko EGUCHI , Takahisa HONDA , Takashi MOROHOSHI
IPC: C22C38/58 , C22C38/54 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/02 , C22C38/00
Abstract: There is provided a hot-stamped member or a steel sheet for hot stamping having a chemical composition including, in mass %, C: 0.25% or more and 0.55% or less, Si: 0.001% or more and 2.0% or less, Mn: 0.3% or more and 3.0% or less, P: 0.02% or less, S: 0.003% or less, Al: 0.005% or more and 1.0% or less, Cr: 0% or more and 1.0% or less, Mo: 0% or more and 1.0% or less, N: 0.02% or less, Ca: 0% or more and 0.0010% or less, B: 0.0005% or more and 0.01% or less, one or two or more selected from the group consisting of Ti: 0.005% or more and 0.5% or less, Nb: 0.005% or more and 0.5% or less, V: 0.005% or more and 0.5% or less, and Zr: 0.005% or more and 0.5% or less, and Ni+Cu+Sn: 0% or more and 2% or less, and a remainder consisting of Fe and impurities.
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6.发明申请公开(公告)号：US20210172036A1
公开(公告)日：2021-06-10
申请号：US16771533
申请日：2019-02-15
Applicant: NIPPON STEEL CORPORATION
Inventor： Takeshi KUBOTA , Takeaki WAKISAKA , Takashi MOROHOSHI , Masafumi MIYAZAKI
IPC: C21D9/46 , C21D8/12 , C21D6/00 , C22C38/16 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , H01F1/147
Abstract: 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: 0.0015% to 0.0100% 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.
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7.发明申请公开(公告)号：US20210062286A1
公开(公告)日：2021-03-04
申请号：US16958097
申请日：2019-02-15
Applicant: NIPPON STEEL CORPORATION
Inventor： Takeshi KUBOTA , Takeaki WAKISAKA , Masafumi MIYAZAKI , Takashi MOROHOSHI
IPC: C21D9/46 , C21D8/12 , C21D6/00 , C22C38/16 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , H01F1/147
Abstract: 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]+2x[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.
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公开(公告)号：US20200224296A1
公开(公告)日：2020-07-16
申请号：US16496328
申请日：2017-06-02
Applicant: NIPPON STEEL CORPORATION
Inventor： Takeshi KUBOTA , Takashi MOROHOSHI , Masafumi MIYAZAKI
Abstract: When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]−[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 40% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 μm to 100 μm.
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公开(公告)号：US20190316239A1
公开(公告)日：2019-10-17
申请号：US16470122
申请日：2018-01-16
Applicant: NIPPON STEEL CORPORATION
Inventor： Hiroyoshi YASHIKI , Yoshiaki NATORI , Kazutoshi TAKEDA , Susumu MUKAWA , Takuya MATSUMOTO , Koji FUJITA , Takashi MOROHOSHI , Masafumi MIYAZAKI
IPC: C22C38/60 , C22C38/00 , C22C38/14 , C22C38/04 , C22C38/06 , C22C38/02 , C21D9/46 , C21D8/12 , C21D6/00 , H01F1/147
Abstract: A non-oriented electrical steel sheet according to an aspect of the present invention contains, as a chemical composition, by mass %, C: more than 0% and 0.0050% or less, Si: 3.0% to 4.0%, Mn: 1.2% to 3.3%, P: more than 0% and less than 0.030%, S: more than 0% and 0.0050% or less, sol. Al: more than 0% and 0.0040% or less, N: more than 0% and 0.0040% or less, one or more of La, Ce, Pr, and Nd: 0.0005% to 0.0200% in total, Ca: 0.0005% to 0.0100%, Ti: 0.0005% to 0.0100%, Sn: 0% to 0.10%, Sb: 0% to 0.10%, Mg: 0% to 0.0100%, and a remainder including Fe and impurities, in which Si−0.5×Mn: 2.0% or more, and Si+0.5×Mn: 3.8% or more.
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