JPS5651529A - Method of improving iron loss characteristic of magnetic steel sheet and its device - Google Patents

Method of improving iron loss characteristic of magnetic steel sheet and its device

Info

Publication number
JPS5651529A
JPS5651529A JP12766479A JP12766479A JPS5651529A JP S5651529 A JPS5651529 A JP S5651529A JP 12766479 A JP12766479 A JP 12766479A JP 12766479 A JP12766479 A JP 12766479A JP S5651529 A JPS5651529 A JP S5651529A
Authority
JP
Japan
Prior art keywords
condensing
steel sheet
magnetic steel
laser light
lenses
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
JP12766479A
Other languages
Japanese (ja)
Other versions
JPS5826407B2 (en
Inventor
Tadashi Ichiyama
Shigehiro Yamaguchi
Toru Inouchi
Katsuro Kuroki
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 JP54127664A priority Critical patent/JPS5826407B2/en
Publication of JPS5651529A publication Critical patent/JPS5651529A/en
Publication of JPS5826407B2 publication Critical patent/JPS5826407B2/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

Abstract

PURPOSE:To improve the iron loss value of a directional magnetic steel sheet by condensing laser light by the use of a plurality of condensing units constituted by beam splitters and condensing lenses and irradiating said light to the surface of the magnetic steel sheet in the direction normal to the rolling direction of the steel pate. CONSTITUTION:An n number of condensing units 6 constituted by beam splitters 3 and condensing lenses 4 are installed above an magnetic steel sheet 1 in the width direction normal to the rolling direction of the steel plate. If the plate width is defined as W, the space between the condensing units becomes W/n. The laser light emitted from a loaser oscillator 2 is passed through and reflected by beam splitters 3-3'' and is finally reflected by the total reflecting mirror 5, thence it is condensed by the condensing lens 4, so that the laser light is condensed onto the magnetic steel sheet 1. This condensing point is moved by a distance W/n in the width direction of the magnetic steel sheet to irradiate the entire surface. In this case, it is equally well to form slender laser light focuses 8 by using semicylindrical lenses 7 in place of the condensing lenses.
JP54127664A 1979-10-03 1979-10-03 How to improve iron loss characteristics of electrical steel sheets Expired JPS5826407B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54127664A JPS5826407B2 (en) 1979-10-03 1979-10-03 How to improve iron loss characteristics of electrical steel sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54127664A JPS5826407B2 (en) 1979-10-03 1979-10-03 How to improve iron loss characteristics of electrical steel sheets

Publications (2)

Publication Number Publication Date
JPS5651529A true JPS5651529A (en) 1981-05-09
JPS5826407B2 JPS5826407B2 (en) 1983-06-02

Family

ID=14965661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54127664A Expired JPS5826407B2 (en) 1979-10-03 1979-10-03 How to improve iron loss characteristics of electrical steel sheets

Country Status (1)

Country Link
JP (1) JPS5826407B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1259842A1 (en) * 2000-01-15 2002-11-27 Corning Incorporated System and method for writing fiber gratings

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0513285Y2 (en) * 1986-12-19 1993-04-08
JP5574047B2 (en) * 2011-06-03 2014-08-20 新日鐵住金株式会社 Directional electrical steel sheet manufacturing apparatus and directionality electrical steel sheet manufacturing method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5140698A (en) * 1974-10-04 1976-04-05 Tokyo Shibaura Electric Co

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5140698A (en) * 1974-10-04 1976-04-05 Tokyo Shibaura Electric Co

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1259842A1 (en) * 2000-01-15 2002-11-27 Corning Incorporated System and method for writing fiber gratings
EP1259842A4 (en) * 2000-01-15 2005-05-04 Corning Inc System and method for writing fiber gratings

Also Published As

Publication number Publication date
JPS5826407B2 (en) 1983-06-02

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