JPS57198217A - Magnetic characteristic improvidng method of directional electrical sheet - Google Patents

Magnetic characteristic improvidng method of directional electrical sheet

Info

Publication number
JPS57198217A
JPS57198217A JP56079386A JP7938681A JPS57198217A JP S57198217 A JPS57198217 A JP S57198217A JP 56079386 A JP56079386 A JP 56079386A JP 7938681 A JP7938681 A JP 7938681A JP S57198217 A JPS57198217 A JP S57198217A
Authority
JP
Japan
Prior art keywords
sheet
discharge
rolling direction
mark
electrical sheet
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.)
Pending
Application number
JP56079386A
Other languages
Japanese (ja)
Inventor
Toru Inouchi
Shigehiro Yamaguchi
Motoharu Nakamura
Tadashi Ishimoto
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 JP56079386A priority Critical patent/JPS57198217A/en
Publication of JPS57198217A publication Critical patent/JPS57198217A/en
Pending 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)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

PURPOSE:To remarkably reduce an iron loss of a directional electrical sheet, by generating an irradiation mark by a laser and a discharge mark by discharge in the direction meeting at right angles to the rolling direction and in the rolling direction, respectively, on the surface of the electrical sheet. CONSTITUTION:On the surface of a finish-annealed directional electrical sheet 4, a laser beam 2 is irradiated from a laser source 1, making it scan at right angles to the rolling direction of the sheet 4, and as the sheet 4 moves in the direction as indicated with an arrow, a laser irradiation mark 5 is provided. On the other hand, intermittent or continuous discharge is executed between discharge electrodes 3 provided at prescribed intervals in the width direction and the steel plate 4, and a discharge mark 6 is provided. In this way, when the laser beam irradiation mark 5 is provided in the direction meeting at right angles to the rolling direction of the sheet 4, on the surface of the sheet 4, an iron loss characteristic of the sheet 4 in the rolling direction is elevated, and an iron loss characteristic of the sheet 4 in the width direction is elevated by the discharge mark 6 provided in the rolling direction.
JP56079386A 1981-05-27 1981-05-27 Magnetic characteristic improvidng method of directional electrical sheet Pending JPS57198217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56079386A JPS57198217A (en) 1981-05-27 1981-05-27 Magnetic characteristic improvidng method of directional electrical sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56079386A JPS57198217A (en) 1981-05-27 1981-05-27 Magnetic characteristic improvidng method of directional electrical sheet

Publications (1)

Publication Number Publication Date
JPS57198217A true JPS57198217A (en) 1982-12-04

Family

ID=13688421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56079386A Pending JPS57198217A (en) 1981-05-27 1981-05-27 Magnetic characteristic improvidng method of directional electrical sheet

Country Status (1)

Country Link
JP (1) JPS57198217A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0137747A2 (en) * 1983-09-14 1985-04-17 British Steel plc Improvements in or relating to the production of grain oriented steel
US4931613A (en) * 1987-05-08 1990-06-05 Allegheny Ludlum Corporation Electrical discharge scribing for improving core loss of grain-oriented silicon steel
JP2008057001A (en) * 2006-08-31 2008-03-13 Jfe Steel Kk Grain-oriented electromagnetic steel sheet
WO2010147009A1 (en) * 2009-06-19 2010-12-23 新日本製鐵株式会社 Unidirectional electromagnetic steel sheet and method for producing same
JP2015106631A (en) * 2013-11-29 2015-06-08 東芝産業機器システム株式会社 Vector magnetic characteristic controlled material and iron core

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0137747A2 (en) * 1983-09-14 1985-04-17 British Steel plc Improvements in or relating to the production of grain oriented steel
US4931613A (en) * 1987-05-08 1990-06-05 Allegheny Ludlum Corporation Electrical discharge scribing for improving core loss of grain-oriented silicon steel
JP2008057001A (en) * 2006-08-31 2008-03-13 Jfe Steel Kk Grain-oriented electromagnetic steel sheet
WO2010147009A1 (en) * 2009-06-19 2010-12-23 新日本製鐵株式会社 Unidirectional electromagnetic steel sheet and method for producing same
JP2015106631A (en) * 2013-11-29 2015-06-08 東芝産業機器システム株式会社 Vector magnetic characteristic controlled material and iron core

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