JPS5651522A - Production of magnetic steel sheet with superior iron loss characteristic for electric machinery - Google Patents

Production of magnetic steel sheet with superior iron loss characteristic for electric machinery

Info

Publication number
JPS5651522A
JPS5651522A JP12766279A JP12766279A JPS5651522A JP S5651522 A JPS5651522 A JP S5651522A JP 12766279 A JP12766279 A JP 12766279A JP 12766279 A JP12766279 A JP 12766279A JP S5651522 A JPS5651522 A JP S5651522A
Authority
JP
Japan
Prior art keywords
steel sheet
iron loss
magnetic steel
steel plate
laser light
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP12766279A
Other languages
Japanese (ja)
Other versions
JPS5826405B2 (en
Inventor
Tadashi Ichiyama
Shigehiro Yamaguchi
Toru Inouchi
Katsuro Kuroki
Toshiya Wada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP54127662A priority Critical patent/JPS5826405B2/en
Publication of JPS5651522A publication Critical patent/JPS5651522A/en
Publication of JPS5826405B2 publication Critical patent/JPS5826405B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1294—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a localized treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To add micro-plastic strains to an magnetic steel sheet noncontactually without giving any shape change to the steel plate surface and improve iron loss value by linearly irradiating laser light along the rolling direction of the unidirectional magnetic steel sheet. CONSTITUTION:Laser light of 0.5-5J/cm<2> irradiation energy is linearly irradiated to a unidirectional magnetic steel sheet used for cores of transformers etc. in the rolling direction (L direction) or in the direction of an angle to the L direction within 45 deg.. The irradiation of the laser light is performed from the perpendicular direction of the steel plate surface to the L direction in such a manner that the irradiation width becomes 0.01-1mm.. In the irradiated steel plate parts, the new magnetic domains are produced in the form that they extend in the C direction without giving any deformation to the steel plate by impulse wave effect, thus the iron loss value in the C direction normal to the rolling direction is improved and this material has superior performance as a material for large-sized rotating machines or a material for the EI cores of transformers.
JP54127662A 1979-10-03 1979-10-03 Method for manufacturing electrical steel sheets for electrical equipment with excellent iron loss characteristics Expired JPS5826405B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54127662A JPS5826405B2 (en) 1979-10-03 1979-10-03 Method for manufacturing electrical steel sheets for electrical equipment with excellent iron loss characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54127662A JPS5826405B2 (en) 1979-10-03 1979-10-03 Method for manufacturing electrical steel sheets for electrical equipment with excellent iron loss characteristics

Publications (2)

Publication Number Publication Date
JPS5651522A true JPS5651522A (en) 1981-05-09
JPS5826405B2 JPS5826405B2 (en) 1983-06-02

Family

ID=14965614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54127662A Expired JPS5826405B2 (en) 1979-10-03 1979-10-03 Method for manufacturing electrical steel sheets for electrical equipment with excellent iron loss characteristics

Country Status (1)

Country Link
JP (1) JPS5826405B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467384A2 (en) * 1990-07-20 1992-01-22 Nippon Steel Corporation Method of producing grain oriented silicon steel sheets each having a low watt loss
EP0992591A3 (en) * 1998-10-06 2001-02-07 Nippon Steel Corporation Grain-oriented electrical steel sheet and production method thereof
WO2009075328A1 (en) 2007-12-12 2009-06-18 Nippon Steel Corporation Method for manufacturing grain-oriented electromagnetic steel sheet whose magnetic domains are controlled by laser beam application
CN111542622A (en) * 2017-12-26 2020-08-14 Posco公司 Oriented electrical steel sheet and method for refining magnetic domain thereof

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6613160B2 (en) 2000-08-08 2003-09-02 Nippon Steel Corporation Method to produce grain-oriented electrical steel sheet having high magnetic flux density
JP4288054B2 (en) 2002-01-08 2009-07-01 新日本製鐵株式会社 Method for producing grain-oriented silicon steel sheet
CN105244135B (en) * 2015-09-24 2018-03-30 国网智能电网研究院 A kind of electrical sheet sheet material and preparation method thereof
KR101739865B1 (en) 2016-01-22 2017-05-25 주식회사 포스코 Method and apparatus for refining magnetic domains grain-oriented electrical steel
US11993835B2 (en) 2019-01-16 2024-05-28 Nippon Steel Corporation Grain-oriented electrical steel sheet and method for manufacturing same
CN113272456B (en) 2019-01-16 2023-03-14 日本制铁株式会社 Method for producing grain-oriented electromagnetic steel sheet
BR112021013768A2 (en) 2019-01-16 2021-09-21 Nippon Steel Corporation ELECTRIC STEEL SHEET WITH ORIENTED GRAIN, AND, METHOD TO MANUFACTURE AN ELECTRIC STEEL SHEET WITH ORIENTED GRAIN
BR112021013639A2 (en) 2019-01-16 2021-09-14 Nippon Steel Corporation METHOD TO MANUFACTURE AN ELECTRIC STEEL SHEET WITH ORIENTED GRAIN
US20230175090A1 (en) 2020-07-15 2023-06-08 Nippon Steel Corporation Grain-oriented electrical steel sheet, and method for manufacturing grain-oriented electrical steel sheet

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467384A2 (en) * 1990-07-20 1992-01-22 Nippon Steel Corporation Method of producing grain oriented silicon steel sheets each having a low watt loss
EP0992591A3 (en) * 1998-10-06 2001-02-07 Nippon Steel Corporation Grain-oriented electrical steel sheet and production method thereof
WO2009075328A1 (en) 2007-12-12 2009-06-18 Nippon Steel Corporation Method for manufacturing grain-oriented electromagnetic steel sheet whose magnetic domains are controlled by laser beam application
US8277574B2 (en) 2007-12-12 2012-10-02 Nippon Steel Corporation Method for manufacturing grain-oriented electromagnetic steel sheet whose magnetic domains are controlled by laser beam irradiation
KR101203286B1 (en) 2007-12-12 2012-11-20 신닛테츠스미킨 카부시키카이샤 Method for manufacturing grain-oriented electromagnetic steel sheet whose magnetic domains are controlled by laser beam application
CN111542622A (en) * 2017-12-26 2020-08-14 Posco公司 Oriented electrical steel sheet and method for refining magnetic domain thereof

Also Published As

Publication number Publication date
JPS5826405B2 (en) 1983-06-02

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