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RO78571A - Procedeu de obtinere a tablei din otel silicios pentru electrotehnicacu structura orientata cub pe muchie - Google Patents

Procedeu de obtinere a tablei din otel silicios pentru electrotehnicacu structura orientata cub pe muchie

Info

Publication number
RO78571A
RO78571A RO7998274A RO9827479A RO78571A RO 78571 A RO78571 A RO 78571A RO 7998274 A RO7998274 A RO 7998274A RO 9827479 A RO9827479 A RO 9827479A RO 78571 A RO78571 A RO 78571A
Authority
RO
Romania
Prior art keywords
muchie
cub
obtaining
electrical
electrical equipment
Prior art date
Application number
RO7998274A
Other languages
English (en)
French (fr)
Inventor
Tadashi Ichiyama
Shigehiro Yamaguchi
Tohru Iuchi
Katzuro Kuroki
Original Assignee
Nippon Steel Corp,Jp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=14020247&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=RO78571(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Nippon Steel Corp,Jp filed Critical Nippon Steel Corp,Jp
Publication of RO78571A publication Critical patent/RO78571A/ro

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D10/00Modifying the physical properties by methods other than heat treatment or deformation
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1294Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a localized treatment
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147Alloys characterised by their composition
    • H01F1/14766Fe-Si based alloys
    • H01F1/14775Fe-Si based alloys in the form of sheets

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Soft Magnetic Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
RO7998274A 1978-07-26 1979-07-26 Procedeu de obtinere a tablei din otel silicios pentru electrotehnicacu structura orientata cub pe muchie RO78571A (ro)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9121778A JPS5518566A (en) 1978-07-26 1978-07-26 Improving method for iron loss characteristic of directional electrical steel sheet

Publications (1)

Publication Number Publication Date
RO78571A true RO78571A (ro) 1982-04-12

Family

ID=14020247

Family Applications (1)

Application Number Title Priority Date Filing Date
RO7998274A RO78571A (ro) 1978-07-26 1979-07-26 Procedeu de obtinere a tablei din otel silicios pentru electrotehnicacu structura orientata cub pe muchie

Country Status (7)

Country Link
US (1) US4293350A (ro)
EP (1) EP0008385B1 (ro)
JP (1) JPS5518566A (ro)
DE (1) DE2966985D1 (ro)
PL (1) PL126505B1 (ro)
RO (1) RO78571A (ro)
SU (1) SU1001864A3 (ro)

Families Citing this family (103)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826406B2 (ja) * 1979-10-03 1983-06-02 新日本製鐵株式会社 電磁鋼板の鉄損値を改善する方法及びその装置
GB2062972B (en) * 1979-10-19 1983-08-10 Nippon Steel Corp Iron core for electrical machinery and apparatus and well as method for producing the iron core
US4363677A (en) * 1980-01-25 1982-12-14 Nippon Steel Corporation Method for treating an electromagnetic steel sheet and an electromagnetic steel sheet having marks of laser-beam irradiation on its surface
JPS57161030A (en) * 1981-03-28 1982-10-04 Nippon Steel Corp Improving method for watt loss of thin strip of amorphous magnetic alloy
JPS57161031A (en) * 1981-03-28 1982-10-04 Nippon Steel Corp Improving method for watt loss of thin strip of amorphous magnetic alloy
JPS6056404B2 (ja) * 1981-07-17 1985-12-10 新日本製鐵株式会社 方向性電磁鋼板の鉄損低減方法およびその装置
FR2510608B1 (fr) * 1981-07-17 1986-05-23 Nippon Steel Corp Procede et dispositif pour ameliorer les toles d'acier electromagnetique a grain oriente
JPS58144424A (ja) * 1982-02-19 1983-08-27 Kawasaki Steel Corp 低鉄損方向性電磁鋼板の製造方法
US4456812A (en) 1982-07-30 1984-06-26 Armco Inc. Laser treatment of electrical steel
US4468551A (en) * 1982-07-30 1984-08-28 Armco Inc. Laser treatment of electrical steel and optical scanning assembly therefor
US4535218A (en) * 1982-10-20 1985-08-13 Westinghouse Electric Corp. Laser scribing apparatus and process for using
US4500771A (en) * 1982-10-20 1985-02-19 Westinghouse Electric Corp. Apparatus and process for laser treating sheet material
US4645547A (en) * 1982-10-20 1987-02-24 Westinghouse Electric Corp. Loss ferromagnetic materials and methods of improvement
JPS5965967U (ja) * 1982-10-26 1984-05-02 小松ゼノア株式会社 気化器の取付中間体
US4545828A (en) * 1982-11-08 1985-10-08 Armco Inc. Local annealing treatment for cube-on-edge grain oriented silicon steel
US4554029A (en) * 1982-11-08 1985-11-19 Armco Inc. Local heat treatment of electrical steel
GB8324643D0 (en) * 1983-09-14 1983-10-19 British Steel Corp Production of grain orientated steel
EP0143548B1 (en) * 1983-10-27 1988-08-24 Kawasaki Steel Corporation Grain-oriented silicon steel sheet having a low iron loss free from deterioration due to stress-relief annealing and a method of producing the same
US4655854A (en) * 1983-10-27 1987-04-07 Kawasaki Steel Corporation Grain-oriented silicon steel sheet having a low iron loss free from deterioration due to stress-relief annealing and a method of producing the same
US4724015A (en) * 1984-05-04 1988-02-09 Nippon Steel Corporation Method for improving the magnetic properties of Fe-based amorphous-alloy thin strip
JPS6046325A (ja) * 1984-05-07 1985-03-13 Nippon Steel Corp 電磁鋼板の処理方法
DE3539731C2 (de) * 1984-11-10 1994-08-04 Nippon Steel Corp Kornorientiertes Elektrostahlblech mit stabilen, gegen das Spannungsfreiglühen beständigen magnetischen Eigenschaften und Verfahren und Vorrichtung zu seiner Herstellung
US4772338A (en) * 1985-10-24 1988-09-20 Kawasaki Steel Corporation Process and apparatus for improvement of iron loss of electromagnetic steel sheet or amorphous material
JPS62151521A (ja) * 1985-12-26 1987-07-06 Nippon Steel Corp グラス皮膜特性のすぐれた低鉄損方向性電磁鋼板の製造方法
US4909864A (en) * 1986-09-16 1990-03-20 Kawasaki Steel Corp. Method of producing extra-low iron loss grain oriented silicon steel sheets
DE3711905A1 (de) * 1987-04-08 1988-10-27 Fraunhofer Ges Forschung Vorrichtung zum behandeln von werkstoffbahnen, -tafeln o. dgl. werkstuecken mit laserstrahlung, insbesondere fuer in laengsrichtung gefoerderte kornorientierte elektrobleche
US4931613A (en) * 1987-05-08 1990-06-05 Allegheny Ludlum Corporation Electrical discharge scribing for improving core loss of grain-oriented silicon steel
JPH0768580B2 (ja) * 1988-02-16 1995-07-26 新日本製鐵株式会社 鉄損の優れた高磁束密度一方向性電磁鋼板
IN171546B (ro) * 1988-03-25 1992-11-14 Armco Advanced Materials
JPH0230740A (ja) * 1988-04-23 1990-02-01 Nippon Steel Corp 鉄損の著しく優れた高磁束密度一方向性電磁鋼板及びその製造方法
US5067992A (en) * 1988-10-14 1991-11-26 Abb Power T & D Company, Inc. Drilling of steel sheet
US4963199A (en) * 1988-10-14 1990-10-16 Abb Power T&D Company, Inc. Drilling of steel sheet
US5089062A (en) * 1988-10-14 1992-02-18 Abb Power T&D Company, Inc. Drilling of steel sheet
JPH0686633B2 (ja) * 1989-10-14 1994-11-02 新日本製鐵株式会社 鉄損の低い巻鉄心の製造方法
EP0606884B1 (en) * 1993-01-12 1999-08-18 Nippon Steel Corporation Grain-oriented electrical steel sheet with very low core loss and method of producing the same
US5509976A (en) * 1995-07-17 1996-04-23 Nippon Steel Corporation Method for producing a grain-oriented electrical steel sheet having a mirror surface and improved core loss
IT1306157B1 (it) 1999-05-26 2001-05-30 Acciai Speciali Terni Spa Procedimento per il miglioramento di caratteristiche magnetiche inlamierini di acciaio al silicio a grano orientato mediante trattamento
DE60139222D1 (de) 2000-04-24 2009-08-27 Nippon Steel Corp Kornorientiertes Elektroblech mit ausgezeichneten magnetischen Eigenschaften
JP4216488B2 (ja) * 2000-05-12 2009-01-28 新日本製鐵株式会社 方向性電磁鋼板及びその製造方法
DE10130308B4 (de) * 2001-06-22 2005-05-12 Thyssenkrupp Electrical Steel Ebg Gmbh Kornorientiertes Elektroblech mit einer elektrisch isolierenden Beschichtung
TWI305548B (en) 2005-05-09 2009-01-21 Nippon Steel Corp Low core loss grain-oriented electrical steel sheet and method for producing the same
US7887646B2 (en) 2005-05-23 2011-02-15 Nippon Steel Corporation Oriented magnetic steel plate excellent in coating adhesion and method of production of same
JP5613972B2 (ja) * 2006-10-23 2014-10-29 新日鐵住金株式会社 鉄損特性の優れた一方向性電磁鋼板
EP2096185B1 (en) 2006-11-22 2014-08-13 Nippon Steel & Sumitomo Metal Corporation Unidirectionally grain oriented electromagnetic steel sheet having excellent film adhesion, and method for manufacturing the same
JP4734455B2 (ja) 2008-01-24 2011-07-27 新日本製鐵株式会社 磁気特性の優れた方向性電磁鋼板
WO2009104521A1 (ja) 2008-02-19 2009-08-27 新日本製鐵株式会社 低鉄損一方向性電磁鋼板及びその製造方法
CN102378819B (zh) 2009-04-06 2013-07-24 新日铁住金株式会社 方向性电磁钢板用钢的处理方法及方向性电磁钢板的制造方法
KR101190569B1 (ko) 2010-03-03 2012-10-16 국민대학교산학협력단 재료의 집합조직 제어방법, 및 이를 이용하여 형성된 철 또는 철 합금 재료
CN101831538B (zh) * 2010-05-06 2011-12-21 上海大学 用超声波降低取向硅钢铁损的方法
WO2012001957A1 (ja) 2010-06-29 2012-01-05 Jfeスチール株式会社 方向性電磁鋼板およびその製造方法
JP5696380B2 (ja) 2010-06-30 2015-04-08 Jfeスチール株式会社 方向性電磁鋼板の鉄損改善装置および鉄損改善方法
JP6084351B2 (ja) 2010-06-30 2017-02-22 Jfeスチール株式会社 方向性電磁鋼板およびその製造方法
CN103069033B (zh) 2010-08-06 2014-07-30 杰富意钢铁株式会社 方向性电磁钢板及其制造方法
US9240266B2 (en) 2010-08-06 2016-01-19 Jfe Steel Corporation Grain oriented electrical steel sheet
JP5998424B2 (ja) 2010-08-06 2016-09-28 Jfeスチール株式会社 方向性電磁鋼板
JP5593942B2 (ja) 2010-08-06 2014-09-24 Jfeスチール株式会社 方向性電磁鋼板およびその製造方法
WO2012017655A1 (ja) 2010-08-06 2012-02-09 Jfeスチール株式会社 方向性電磁鋼板およびその製造方法
JP5919617B2 (ja) 2010-08-06 2016-05-18 Jfeスチール株式会社 方向性電磁鋼板およびその製造方法
MX353179B (es) 2010-08-06 2018-01-05 Jfe Steel Corp Lamina de acero electrica de grano orientado y metodo para la produccion de la misma.
JP5754097B2 (ja) 2010-08-06 2015-07-22 Jfeスチール株式会社 方向性電磁鋼板およびその製造方法
BR112013002987B1 (pt) 2010-08-06 2020-03-24 Jfe Steel Corporation Chapa de aço para fins elétricos de grão orientado
JP5853352B2 (ja) 2010-08-06 2016-02-09 Jfeスチール株式会社 方向性電磁鋼板およびその製造方法
MX2013002627A (es) 2010-09-10 2013-04-24 Jfe Steel Corp Lamina de acero magnetica de grano orientado y proceso para producir la misma.
JP5891578B2 (ja) 2010-09-28 2016-03-23 Jfeスチール株式会社 方向性電磁鋼板
JP6121086B2 (ja) 2010-09-30 2017-04-26 Jfeスチール株式会社 方向性電磁鋼板およびその製造方法
US20130314198A1 (en) 2011-01-28 2013-11-28 Hitachi Metals, Ltd. Rapidly quenched fe-based soft-magnetic alloy ribbon and its production method and core
DE102011000712A1 (de) 2011-02-14 2012-08-16 Thyssenkrupp Electrical Steel Gmbh Verfahren zum Erzeugen eines kornorientierten Stahlflachprodukts
CN104024451B (zh) 2011-12-26 2016-05-04 杰富意钢铁株式会社 取向性电磁钢板
KR101580837B1 (ko) 2011-12-27 2015-12-29 제이에프이 스틸 가부시키가이샤 방향성 전자 강판
CN107012309B (zh) * 2011-12-27 2020-03-10 杰富意钢铁株式会社 取向性电磁钢板的铁损改善装置
EP2799566B1 (en) 2011-12-28 2019-04-17 JFE Steel Corporation Grain-oriented electrical steel sheet and method for improving iron loss properties thereof
US10395806B2 (en) 2011-12-28 2019-08-27 Jfe Steel Corporation Grain-oriented electrical steel sheet and method of manufacturing the same
JP6010907B2 (ja) * 2011-12-28 2016-10-19 Jfeスチール株式会社 方向性電磁鋼板およびその製造方法
WO2013160955A1 (ja) 2012-04-26 2013-10-31 Jfeスチール株式会社 方向性電磁鋼板およびその製造方法
US10629346B2 (en) 2012-04-26 2020-04-21 Jfe Steel Corporation Method of manufacturing grain-oriented electrical steel sheet
JP5971157B2 (ja) 2013-03-11 2016-08-17 Jfeスチール株式会社 塗布装置および塗布方法
JP5668795B2 (ja) 2013-06-19 2015-02-12 Jfeスチール株式会社 方向性電磁鋼板およびそれを用いた変圧器鉄心
US9617615B2 (en) 2013-09-19 2017-04-11 Jfe Steel Corporation Grain-oriented electrical steel sheet and method for manufacturing same
CN106414779B (zh) 2014-01-23 2018-12-14 杰富意钢铁株式会社 取向性电磁钢板及其制造方法
CN106471140B (zh) * 2014-07-03 2019-02-05 新日铁住金株式会社 激光加工装置
EP3257960B1 (en) 2015-02-13 2020-11-04 JFE Steel Corporation Grain-oriented electrical steel sheet and method for manufacturing same
CN107406903B (zh) 2015-04-20 2019-07-30 日本制铁株式会社 方向性电磁钢板
JP6455593B2 (ja) 2015-04-20 2019-01-23 新日鐵住金株式会社 方向性電磁鋼板
DE102015114358B4 (de) 2015-08-28 2017-04-13 Thyssenkrupp Electrical Steel Gmbh Verfahren zum Herstellen eines kornorientierten Elektrobands und kornorientiertes Elektroband
KR101739866B1 (ko) 2016-01-22 2017-05-25 주식회사 포스코 방향성 전기강판의 자구미세화 방법과 그 장치
KR102148383B1 (ko) 2016-01-22 2020-08-26 주식회사 포스코 방향성 전기강판의 자구미세화 방법과 그 장치
KR101739865B1 (ko) 2016-01-22 2017-05-25 주식회사 포스코 방향성 전기강판의 자구미세화 방법과 그 장치
CN110177891B (zh) 2016-12-23 2021-05-14 Posco公司 取向电工钢板的磁畴细化方法及其装置
JP6372581B1 (ja) 2017-02-17 2018-08-15 Jfeスチール株式会社 方向性電磁鋼板
EP3591080B1 (en) 2017-02-28 2021-01-13 JFE Steel Corporation Grain-oriented electrical steel sheet and production method therefor
KR102044320B1 (ko) 2017-12-26 2019-11-13 주식회사 포스코 방향성 전기강판 및 그 자구미세화 방법
EP3734623B1 (en) 2018-01-31 2024-09-18 JFE Steel Corporation Method for selecting grain-oriented electrical steel sheets
EP3812478B1 (en) 2018-06-21 2024-04-10 Nippon Steel Corporation Grain-oriented electrical steel sheet with excellent magnetic characteristics
KR102091631B1 (ko) * 2018-08-28 2020-03-20 주식회사 포스코 방향성 전기강판 및 그 자구미세화 방법
KR102104554B1 (ko) 2018-09-21 2020-04-24 주식회사 포스코 방향성 전기강판 및 그 자구미세화 방법
KR102178733B1 (ko) 2018-09-28 2020-11-13 주식회사 포스코 이물질 포집장치 및 이를 포함하는 전기강판 제조설비
JP6977702B2 (ja) * 2018-12-05 2021-12-08 Jfeスチール株式会社 方向性電磁鋼板の鉄損改善方法およびその装置
BR112021012749A2 (pt) 2019-01-08 2021-09-08 Nippon Steel Corporation Chapa de aço elétrico de grão orientado, e, método para fabricar uma chapa de aço elétrico de grão orientado
WO2020158893A1 (ja) 2019-01-31 2020-08-06 Jfeスチール株式会社 方向性電磁鋼板およびそれを用いた鉄心
JP7331800B2 (ja) * 2020-07-31 2023-08-23 Jfeスチール株式会社 方向性電磁鋼板
KR20230109739A (ko) 2020-11-27 2023-07-20 제이에프이 스틸 가부시키가이샤 방향성 전자 강판 및 그의 제조 방법
JP7582466B2 (ja) 2022-01-06 2024-11-13 Jfeスチール株式会社 方向性電磁鋼板
EP4273280A1 (en) 2022-05-04 2023-11-08 Thyssenkrupp Electrical Steel Gmbh Method for producing a grain-oriented electrical steel strip and grain-oriented electrical steel strip

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192078A (en) * 1963-12-30 1965-06-29 Daniel I Gordon Method of making magnetic cores having rectangular hysteresis loops by bombardment with electrons
DE1804208B1 (de) * 1968-10-17 1970-11-12 Mannesmann Ag Verfahren zur Herabsetzung der Wattverluste von kornorientierten Elektroblechen,insbesondere von Wuerfeltexturblechen
BE789262A (fr) * 1971-09-27 1973-01-15 Nippon Steel Corp Procede de formation d'un film isolant sur un feuillard d'acierau silicium oriente
JPS5224499B2 (ro) * 1973-01-22 1977-07-01
JPS5423647B2 (ro) * 1974-04-25 1979-08-15
LU71852A1 (ro) * 1975-02-14 1977-01-05

Also Published As

Publication number Publication date
PL217388A1 (ro) 1980-08-25
JPS5518566A (en) 1980-02-08
EP0008385B1 (en) 1984-05-16
JPS572252B2 (ro) 1982-01-14
US4293350A (en) 1981-10-06
EP0008385A1 (en) 1980-03-05
SU1001864A3 (ru) 1983-02-28
PL126505B1 (en) 1983-08-31
DE2966985D1 (en) 1984-06-20

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