JPS5441220A - Manufacture of oriented electrical steel sheet with superior magnetic characteristics - Google Patents

Manufacture of oriented electrical steel sheet with superior magnetic characteristics

Info

Publication number
JPS5441220A
JPS5441220A JP10793977A JP10793977A JPS5441220A JP S5441220 A JPS5441220 A JP S5441220A JP 10793977 A JP10793977 A JP 10793977A JP 10793977 A JP10793977 A JP 10793977A JP S5441220 A JPS5441220 A JP S5441220A
Authority
JP
Japan
Prior art keywords
annealing
final
steel sheet
contg
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.)
Granted
Application number
JP10793977A
Other languages
Japanese (ja)
Other versions
JPS5743131B2 (en
Inventor
Toshihiko Takada
Osamu Tanaka
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 JP10793977A priority Critical patent/JPS5441220A/en
Publication of JPS5441220A publication Critical patent/JPS5441220A/en
Publication of JPS5743131B2 publication Critical patent/JPS5743131B2/ja
Granted 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

Abstract

PURPOSE:To obtain an oriented electrical steel sheet with cuperior B10 and iron loss characteristics by adding an alkali metal cpd. contg. Na or K to a separating agent for annealing and then coating a steel sheet with the cpd.-added agent, followed by final annealing. CONSTITUTION:A silicon steel contg. C; 0.025-0.085%, Si; 2-4% and acid sol. Al; 0.01-0.065% is hot rolled, continuously annaled at a high temp. of 950- 1,200 deg.C prior to final strong cold rolling, and quenched to allow AIN to precipitate and cohere. Thereafter, final cold rolling is carried out at a reduction ratio of 81-95%, followed by decarburization annealing and final annealing. At this time, to a separating agent for annealing coated on the sheet is added 0.01-5wt% of one or more kinds of alkali metal cpds. contg. Na or K. By the addn. of the cpds. an interfacial shielding effect is obtd. through the reaction with SiO2 in the film, and hence the absorption and release of N can be controlled. Accordingly, the B10 characteristics, e.g. magnetic flux density of the sheet can be increased by 0.02-0.05 wb/m<2> and the iron loss W17/50 by 0.05-0.1W/kg.
JP10793977A 1977-09-09 1977-09-09 Manufacture of oriented electrical steel sheet with superior magnetic characteristics Granted JPS5441220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10793977A JPS5441220A (en) 1977-09-09 1977-09-09 Manufacture of oriented electrical steel sheet with superior magnetic characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10793977A JPS5441220A (en) 1977-09-09 1977-09-09 Manufacture of oriented electrical steel sheet with superior magnetic characteristics

Publications (2)

Publication Number Publication Date
JPS5441220A true JPS5441220A (en) 1979-04-02
JPS5743131B2 JPS5743131B2 (en) 1982-09-13

Family

ID=14471871

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10793977A Granted JPS5441220A (en) 1977-09-09 1977-09-09 Manufacture of oriented electrical steel sheet with superior magnetic characteristics

Country Status (1)

Country Link
JP (1) JPS5441220A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416420A2 (en) * 1989-09-08 1991-03-13 Armco Inc. Magnesium oxide coating for electrical steels and the method of coating

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69218511T2 (en) * 1991-07-10 1997-11-06 Nippon Steel Corp Grain-oriented silicon steel sheet with excellent primary glass film properties

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416420A2 (en) * 1989-09-08 1991-03-13 Armco Inc. Magnesium oxide coating for electrical steels and the method of coating

Also Published As

Publication number Publication date
JPS5743131B2 (en) 1982-09-13

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