JPS56123325A - Treatment of electrical sheet - Google Patents

Treatment of electrical sheet

Info

Publication number
JPS56123325A
JPS56123325A JP700080A JP700080A JPS56123325A JP S56123325 A JPS56123325 A JP S56123325A JP 700080 A JP700080 A JP 700080A JP 700080 A JP700080 A JP 700080A JP S56123325 A JPS56123325 A JP S56123325A
Authority
JP
Japan
Prior art keywords
insulation film
electrical sheet
temp
sheet
electrical
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
JP700080A
Other languages
Japanese (ja)
Other versions
JPS5850298B2 (en
Inventor
Tadashi Ichiyama
Shigehiro Yamaguchi
Toru Inouchi
Motoharu Nakamura
Yozo Suga
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 JP700080A priority Critical patent/JPS5850298B2/en
Priority to US06/227,379 priority patent/US4363677A/en
Priority to DE8181100512T priority patent/DE3165139D1/en
Priority to EP81100512A priority patent/EP0033878B1/en
Priority to DE8383100769T priority patent/DE3177027D1/en
Priority to EP83100769A priority patent/EP0087587B1/en
Publication of JPS56123325A publication Critical patent/JPS56123325A/en
Publication of JPS5850298B2 publication Critical patent/JPS5850298B2/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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (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 produce an electrical sheet having superior magnetic characteristics and insulation characteristics by producing laser traces through laser beam irradiation on the surface of the electrical sheet having undergone secondary recrystallization annealing then subjecting the same to insulation film treatment in a low temp. region. CONSTITUTION:For example, an electrical steel coil coated with an annealing release agent is finished and annealed at high temp., after which it is removed of the excess release agent according to a conventional method, thence it is subjected to flattening at 700-900 deg.C. After this, it is subjected to insulation film treatment at <=600 deg.C sheet temp., preferably <=550 deg.C, and more preferably <=500 deg.C. The electrical sheet obtained by this method is considerably improved of watt loss and as a result, the need for tension effect by the insulation film which has hitherto been industrially practised is eliminated. In addition, the use of stable treating agents, in place of costly insulation film treating agents contg. colloidal silica is made possible.
JP700080A 1980-01-25 1980-01-25 Processing method for electrical steel sheets Expired JPS5850298B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP700080A JPS5850298B2 (en) 1980-01-25 1980-01-25 Processing method for electrical steel sheets
US06/227,379 US4363677A (en) 1980-01-25 1981-01-22 Method for treating an electromagnetic steel sheet and an electromagnetic steel sheet having marks of laser-beam irradiation on its surface
DE8181100512T DE3165139D1 (en) 1980-01-25 1981-01-23 Method for treating an electromagnetic steel sheet by laser-beam irradiation
EP81100512A EP0033878B1 (en) 1980-01-25 1981-01-23 Method for treating an electromagnetic steel sheet by laser-beam irradiation
DE8383100769T DE3177027D1 (en) 1980-01-25 1981-01-23 An electromagnetic steel sheet treated by laser-beam irradiation
EP83100769A EP0087587B1 (en) 1980-01-25 1981-01-23 An electromagnetic steel sheet treated by laser-beam irradiation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP700080A JPS5850298B2 (en) 1980-01-25 1980-01-25 Processing method for electrical steel sheets

Publications (2)

Publication Number Publication Date
JPS56123325A true JPS56123325A (en) 1981-09-28
JPS5850298B2 JPS5850298B2 (en) 1983-11-09

Family

ID=11653822

Family Applications (1)

Application Number Title Priority Date Filing Date
JP700080A Expired JPS5850298B2 (en) 1980-01-25 1980-01-25 Processing method for electrical steel sheets

Country Status (1)

Country Link
JP (1) JPS5850298B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5923822A (en) * 1982-07-28 1984-02-07 Nippon Steel Corp Directional electrical steel sheet with superior magnetic characteristic and its manufacture
JPS5933802A (en) * 1982-07-30 1984-02-23 アームコ、アドバンスト、マテリアルズ、コーポレーション Method of improving iron loss of magnetic material
JPS5935893A (en) * 1982-07-30 1984-02-27 アームコ、アドバンスト、マテリアルズ、コーポレーション Laser treating apparatus of material
JPS5992191A (en) * 1982-10-20 1984-05-28 ウエスチングハウス　エレクトリツク　コ−ポレ−シヨン Laser scribing method and its device
JPS61253380A (en) * 1985-05-02 1986-11-11 Nippon Steel Corp Production of low iron loss grain oriented electrical steel sheet
WO2013118512A1 (en) * 2012-02-08 2013-08-15 Ｊｆｅスチール株式会社 Grain-oriented electrical steel plate
JP2018508647A (en) * 2014-12-24 2018-03-29 ポスコＰｏｓｃｏ Oriented electrical steel sheet and manufacturing method thereof
KR20190121416A (en) 2015-02-13 2019-10-25 제이에프이 스틸 가부시키가이샤 Grain-oriented electrical steel sheet and method for manufacturing same

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5923822A (en) * 1982-07-28 1984-02-07 Nippon Steel Corp Directional electrical steel sheet with superior magnetic characteristic and its manufacture
JPS5933802A (en) * 1982-07-30 1984-02-23 アームコ、アドバンスト、マテリアルズ、コーポレーション Method of improving iron loss of magnetic material
JPS5935893A (en) * 1982-07-30 1984-02-27 アームコ、アドバンスト、マテリアルズ、コーポレーション Laser treating apparatus of material
JPH0151527B2 (en) * 1982-07-30 1989-11-06 Aamuko Adobansuto Materiaruzu Corp
JPH0532881B2 (en) * 1982-07-30 1993-05-18 Armco Inc
JPS5992191A (en) * 1982-10-20 1984-05-28 ウエスチングハウス　エレクトリツク　コ−ポレ−シヨン Laser scribing method and its device
JPH0136531B2 (en) * 1982-10-20 1989-08-01 Westinghouse Electric Corp
JPS61253380A (en) * 1985-05-02 1986-11-11 Nippon Steel Corp Production of low iron loss grain oriented electrical steel sheet
WO2013118512A1 (en) * 2012-02-08 2013-08-15 Ｊｆｅスチール株式会社 Grain-oriented electrical steel plate
JP2013159846A (en) * 2012-02-08 2013-08-19 Jfe Steel Corp Grain-oriented magnetic steel sheet
KR20140133838A (en) * 2012-02-08 2014-11-20 제이에프이 스틸 가부시키가이샤 Grain-oriented electrical steel sheet
US9761361B2 (en) 2012-02-08 2017-09-12 Jfe Steel Corporation Grain-oriented electrical steel sheet
JP2018508647A (en) * 2014-12-24 2018-03-29 ポスコＰｏｓｃｏ Oriented electrical steel sheet and manufacturing method thereof
US11180819B2 (en) 2014-12-24 2021-11-23 Posco Grain-oriented electrical steel plate and production method therefor
KR20190121416A (en) 2015-02-13 2019-10-25 제이에프이 스틸 가부시키가이샤 Grain-oriented electrical steel sheet and method for manufacturing same
US10988822B2 (en) 2015-02-13 2021-04-27 Jfe Steel Corporation Grain-oriented electrical steel sheet and method for manufacturing same

Also Published As

Publication number Publication date
JPS5850298B2 (en) 1983-11-09

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