JPS57192222A - Treatment of electromagnetic steel sheet - Google Patents

Treatment of electromagnetic steel sheet

Info

Publication number
JPS57192222A
JPS57192222A JP7424781A JP7424781A JPS57192222A JP S57192222 A JPS57192222 A JP S57192222A JP 7424781 A JP7424781 A JP 7424781A JP 7424781 A JP7424781 A JP 7424781A JP S57192222 A JPS57192222 A JP S57192222A
Authority
JP
Japan
Prior art keywords
steel sheet
electromagnetic steel
laser
irradiated
effect
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
JP7424781A
Other languages
Japanese (ja)
Other versions
JPS5836052B2 (en
Inventor
Motoharu Nakamura
Masaru Iwasaki
Yoshitada Tanaka
Kikuji Hirose
Toru Inouchi
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 JP7424781A priority Critical patent/JPS5836052B2/en
Publication of JPS57192222A publication Critical patent/JPS57192222A/en
Publication of JPS5836052B2 publication Critical patent/JPS5836052B2/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)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Soft Magnetic Materials (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

PURPOSE:To obtain an electromagnetic steel sheet having a magnetic property and an insulating property under a stable condition, while raising an iron loss- improving effect, by forming a tension film on one surface of the electromagnetic steel sheet, irradiating laser beams to the other surface, and then coating the other surface with an insulating film at a proper temperature. CONSTITUTION:A tension film is formed on only one surface of an electromagnetic steel sheet in a proper manner. Laser beams are then irradiated to the other surface to form laser-irradiated marks. An insulating film is applied to the laser-irradiated surface in a temperature range not to eliminate the laser-irradiating effect, e.g. under the condition that the temperature of the sheet is held below 600 deg.C. According to this method, an iron loss-improving effect is obtained by the conjunct effect of the tension film and the laser irradiation, and the electromagnetic steel sheet, excellent in its insulating property, voltage-withstanding property, corrosion-resistace, adhesiveness and space factor ratio, is obtained.
JP7424781A 1981-05-19 1981-05-19 Processing method for electrical steel sheets Expired JPS5836052B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7424781A JPS5836052B2 (en) 1981-05-19 1981-05-19 Processing method for electrical steel sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7424781A JPS5836052B2 (en) 1981-05-19 1981-05-19 Processing method for electrical steel sheets

Publications (2)

Publication Number Publication Date
JPS57192222A true JPS57192222A (en) 1982-11-26
JPS5836052B2 JPS5836052B2 (en) 1983-08-06

Family

ID=13541635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7424781A Expired JPS5836052B2 (en) 1981-05-19 1981-05-19 Processing method for electrical steel sheets

Country Status (1)

Country Link
JP (1) JPS5836052B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61253380A (en) * 1985-05-02 1986-11-11 Nippon Steel Corp Production of low iron loss grain oriented electrical steel sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61253380A (en) * 1985-05-02 1986-11-11 Nippon Steel Corp Production of low iron loss grain oriented electrical steel sheet

Also Published As

Publication number Publication date
JPS5836052B2 (en) 1983-08-06

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