公开(公告)号：EP3165624A4

公开(公告)日：2017-11-29

申请号：EP15814427

申请日：2015-07-02

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： MURAKAMI KENICHI ,  NATORI YOSHIAKI ,  MATSUMOTO TAKUYA ,  HORI HIROKI ,  WAKISAKA TAKEAKI

IPC分类号： C22C38/00 ,  C21D8/12 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54 ,  C22C38/60 ,  H01F1/03 ,  H01F1/16 ,  H01F41/02 ,  H02K1/02

CPC分类号： H01F1/0306 ,  C21D8/12 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1261 ,  C21D9/46 ,  C21D2211/004 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54 ,  C22C38/60 ,  H01F1/16 ,  H01F41/0233 ,  H02K1/02

摘要： A non-oriented magnetic steel sheet includes a specific chemical composition represented by, in mass%: Si: 3.0% to 3.6%; Al : 0.50% to 1.25%; Mn: 0.5% to 1.5%; Sb or Sn or both of them: [Sb] + [Sn] / 2 is 0.0025% to 0.05% where [Sb] denotes an Sb content and [Sn] denotes an Sn content; P: 0.010% to 0.150%; Ni: 0.010% to 0.200%; C: 0.0010% to 0.0040%; and others. The thickness of the non-oriented magnetic steel sheet is 0.15 mm to 0.30 mm. the non-oriented magnetic steel sheet includes magnetic properties represented by, where t denotes a thickness (mm) of the non-oriented magnetic steel sheet: a magnetic flux density B50: "0.2 × t + 1.52" T or more; a magnetic flux density difference ”B50 : 0.08 T or less; core loss W10/50: 0.95 W/kg or less; and core loss W10/400: "20 × t + 7.5" W/kg or less. A ratio of a number of intergranular carbides precipitated in grains relative to a sum of the number of the intergranular carbides and a number of grain boundary carbides precipitated on grain boundaries is 0.50 or less.

公开(公告)号：EP2832882A4

公开(公告)日：2015-12-16

申请号：EP13768801

申请日：2013-03-27

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： NATORI YOSHIAKI ,  MURAKAMI KENICHI ,  WAKISAKA TAKEAKI ,  MOGI HISASHI ,  MATSUMOTO TAKUYA ,  SHONO TOMOJI ,  TAKASE TATSUYA ,  TAKAOBUSHI JUNICHI

IPC分类号： C22C38/00 ,  C21D8/12 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/14 ,  H01F1/147 ,  H01F1/18

CPC分类号： H01F3/02 ,  C21D8/12 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1261 ,  C21D8/1266 ,  C21D8/1272 ,  C21D2211/004 ,  C22C38/00 ,  C22C38/001 ,  C22C38/004 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/14 ,  H01F1/14775 ,  H01F1/14791 ,  H01F1/16 ,  H01F1/18 ,  H01F41/0233 ,  Y10T29/49986

摘要： This oriented electrical steel sheet is a non-oriented electrical steel sheet consisting of, in mass%: C: not less than 0.0001% and not more than 0.0040%, Si: more than 3.0% and not more than 3.7%, sol.Al: not less than 0.3% and not more than 1.0%, Mn: not less than 0.5% and not more than 1.5%, Sn: not less than 0.005% and not more than 0.1%, Ti: not less than 0.0001% and not more than 0.0030%, S: not less than 0.0001% and not more than 0.0020%, N: not less than 0.0001% and not more than 0.003%, Ni: not less than 0.001% and not more than 0.2%, P: not less than 0.005% and not more than 0.05%, with a balance consisting of Fe and impurities, in which a resistivity p at room temperature ‰¥ 60 µ©cm, and saturation magnetic flux density Bs at room temperature ‰¥ 1.945T are established, and the components contained satisfy 3.5 ‰¤ Si + (2/3) × sol.Al + (1/5) × Mn ‰¤ 4.25.

公开(公告)号：EP2540853A4

公开(公告)日：2013-10-30

申请号：EP11747288

申请日：2011-02-21

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： SHIMAZU TAKAHIDE ,  HONMA HOTAKA ,  KUROSAKI YOUSUKE ,  MOGI HISASHI ,  KOSUGE KENJI ,  WAKISAKA TAKEAKI

IPC分类号： C22C38/00 ,  C21D1/76 ,  C21D8/12 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/34 ,  H01F1/16

CPC分类号： C21D8/1272 ,  C21D1/76 ,  C21D8/1244 ,  C21D8/1266 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/34 ,  H01F1/16

公开(公告)号：EP2778246A4

公开(公告)日：2015-07-15

申请号：EP12877875

申请日：2012-05-31

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： WAKISAKA TAKEAKI

IPC分类号： C22C38/00 ,  B21B3/02 ,  C21D8/12 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/34 ,  C22C38/40 ,  H01F1/147 ,  H01F1/16

CPC分类号： H01F1/14783 ,  B21B3/02 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1272 ,  C22C38/00 ,  C22C38/001 ,  C22C38/004 ,  C22C38/06 ,  C22C38/34 ,  H01F1/14791 ,  H01F1/16 ,  Y10T428/265

摘要： A non-oriented electrical steel sheet includes: C: 0.005 mass% or less; S: 0.003 mass% or less; N: 0.003 mass% or less; Si: 2.0 mass% or more and less than 4.5 mass%; Al: 0.15 mass% or more and less than 2.5 mass%; and Cr: 0.3 mass% or more and less than 5.0 mass%; and a balance being composed of Fe and inevitable impurities; and a Cr-oxide-containing layer having a thickness of not less than 0.01 µ m nor more than 0.5 µ m on a surface side, in which when [Si], [Al], and [Cr] are set to the Si content, the Al content, and the Cr content (mass%) of the non-oriented electrical steel sheet respectively, and t is set to a sheet thickness (mm) of the non-oriented electrical steel sheet, 10 mass% ‰¦ 2[Si] + 2[Al] + [Cr]

公开(公告)号：EP2439302A4

公开(公告)日：2014-07-23

申请号：EP10783293

申请日：2010-05-25

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： MIYAZAKI MASAFUMI ,  YAMAMURA HIDEAKI ,  KUBOTA TAKESHI ,  KUROSAKI YOUSUKE ,  KAWAKAMI KAZUTO ,  MIZUKAMI KAZUMI ,  WAKISAKA TAKEAKI

IPC分类号： C22C38/00 ,  B22D11/00 ,  B22D11/108 ,  C22C38/14 ,  C22C38/60 ,  H01F1/16

CPC分类号： H01F1/14775 ,  B22D11/00 ,  B22D11/108 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/14 ,  C22C38/16 ,  C22C38/28 ,  C22C38/34 ,  C22C38/38 ,  C22C38/60 ,  H01F1/16