JPS57188810A - Improving method for magnetic characteristic of directional electromagnetic steel plate - Google Patents

Improving method for magnetic characteristic of directional electromagnetic steel plate

Info

Publication number
JPS57188810A
JPS57188810A JP7348981A JP7348981A JPS57188810A JP S57188810 A JPS57188810 A JP S57188810A JP 7348981 A JP7348981 A JP 7348981A JP 7348981 A JP7348981 A JP 7348981A JP S57188810 A JPS57188810 A JP S57188810A
Authority
JP
Japan
Prior art keywords
steel plate
insulating material
applying
electromagnetic steel
discharge
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
JP7348981A
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 JP7348981A priority Critical patent/JPS57188810A/en
Publication of JPS57188810A publication Critical patent/JPS57188810A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets 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
    • H01F1/14—Magnets 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
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14766—Fe-Si based alloys
    • H01F1/14775—Fe-Si based alloys in the form of sheets
    • H01F1/14783—Fe-Si based alloys in the form of sheets with insulating coating
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Soft Magnetic Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

PURPOSE:To improve the magnetic characteristics such as the reduction of core loss while simplifying an insulation applying process by conducting an electron discharge method while using an insulating material as the machining liquid of the electron discharge method when the surface of the directional electromagnetic steel plate previously finished and annealed is coated with the insulating mateial. CONSTITUTION:The electromagnetic steel plate 1 is set so as to pass through applying machines 3 for the insulating material 4. The insulating material 4 is supplied so that a mass in an extent that a discharge electrode 2 is immersed can be formed in front of the applying machines 3, voltage is applied to the discharge electrode 2, electricity is discharged between the electrode and the steel plate 1 through the insulating material 4, and the surface of the steel plate 1 is given a discharge mark. The discharge mark is coated with the insulating material 4 through passage through the applying machines 3. The steel plate is passed through an oven, the insulating material is baked, and an insulating film is formed. Accordingly, the magnetic characteristics such as the reduction of core loss is improved by partially applying plastic strain to the steel plate, and the process can be simplified because the electron discharge method is used as the machining liquid at the same time as the application of the insulating material.
JP7348981A 1981-05-18 1981-05-18 Improving method for magnetic characteristic of directional electromagnetic steel plate Pending JPS57188810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7348981A JPS57188810A (en) 1981-05-18 1981-05-18 Improving method for magnetic characteristic of directional electromagnetic steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7348981A JPS57188810A (en) 1981-05-18 1981-05-18 Improving method for magnetic characteristic of directional electromagnetic steel plate

Publications (1)

Publication Number Publication Date
JPS57188810A true JPS57188810A (en) 1982-11-19

Family

ID=13519734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7348981A Pending JPS57188810A (en) 1981-05-18 1981-05-18 Improving method for magnetic characteristic of directional electromagnetic steel plate

Country Status (1)

Country Link
JP (1) JPS57188810A (en)

Cited By (9)

* 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
US4846939A (en) * 1986-01-11 1989-07-11 Nippon Steel Corporation Method for producing a grain-oriented electrical steel sheet having an ultra low watt loss
US4906530A (en) * 1987-08-01 1990-03-06 Kawasaki Steel Corp. Grain oriented electromagnetic steel sheets having a very low iron loss
US4931613A (en) * 1987-05-08 1990-06-05 Allegheny Ludlum Corporation Electrical discharge scribing for improving core loss of grain-oriented silicon steel
US4988058A (en) * 1988-08-25 1991-01-29 Messerschmitt-Boelkow-Blohm Gmbh Method and apparatus for steering moving objects
US5028279A (en) * 1985-12-06 1991-07-02 Nippon Steel Corporation Grain oriented electrical steel sheet having improved glass film properties and low watt loss and process for producing same
JP2008255514A (en) * 2007-04-03 2008-10-23 Umami Kutsushita Jigyo Kyodo Kumiai Socks and method for producing the same
WO2009093492A1 (en) 2008-01-24 2009-07-30 Nippon Steel Corporation Grain-oriented electromagnetic steel sheet excellent in magnetic characteristics
CN103658895A (en) * 2013-12-19 2014-03-26 华南理工大学 Device for carrying out electrical discharge machining on inner surface of complicated shape

Cited By (9)

* 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
US5028279A (en) * 1985-12-06 1991-07-02 Nippon Steel Corporation Grain oriented electrical steel sheet having improved glass film properties and low watt loss and process for producing same
US4846939A (en) * 1986-01-11 1989-07-11 Nippon Steel Corporation Method for producing a grain-oriented electrical steel sheet having an ultra low watt loss
US4931613A (en) * 1987-05-08 1990-06-05 Allegheny Ludlum Corporation Electrical discharge scribing for improving core loss of grain-oriented silicon steel
US4906530A (en) * 1987-08-01 1990-03-06 Kawasaki Steel Corp. Grain oriented electromagnetic steel sheets having a very low iron loss
US4988058A (en) * 1988-08-25 1991-01-29 Messerschmitt-Boelkow-Blohm Gmbh Method and apparatus for steering moving objects
JP2008255514A (en) * 2007-04-03 2008-10-23 Umami Kutsushita Jigyo Kyodo Kumiai Socks and method for producing the same
WO2009093492A1 (en) 2008-01-24 2009-07-30 Nippon Steel Corporation Grain-oriented electromagnetic steel sheet excellent in magnetic characteristics
CN103658895A (en) * 2013-12-19 2014-03-26 华南理工大学 Device for carrying out electrical discharge machining on inner surface of complicated shape

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