JPS5440227A - Manufacture of oriented silicon steel sheet with very high magnetic flux density - Google Patents

Manufacture of oriented silicon steel sheet with very high magnetic flux density

Info

Publication number
JPS5440227A
JPS5440227A JP10736177A JP10736177A JPS5440227A JP S5440227 A JPS5440227 A JP S5440227A JP 10736177 A JP10736177 A JP 10736177A JP 10736177 A JP10736177 A JP 10736177A JP S5440227 A JPS5440227 A JP S5440227A
Authority
JP
Japan
Prior art keywords
temp
magnetic flux
flux density
silicon steel
pref
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
JP10736177A
Other languages
Japanese (ja)
Other versions
JPS5633450B2 (en
Inventor
Shun Sato
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 JP10736177A priority Critical patent/JPS5440227A/en
Publication of JPS5440227A publication Critical patent/JPS5440227A/en
Publication of JPS5633450B2 publication Critical patent/JPS5633450B2/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 considerably increase the magnetic flux density of a silicon steel contg. Si and acid sol. Al by rapidly heating the steel in a temp. range below 900 deg.C and slowly heating it in a temp. range below 1,050 deg.C to carry out finish annealing. CONSTITUTION:A silicon steel ingot contg. Si; 2.5-4%, acid sol. Al; 0.01-0.05%, C; 0.025-0.085% Mn; 0.02-0.2% and S; 0.005-0.05% is hot rolled to a sheet by a known method. This hot rolled sheet is heated at an average rate of 15-100, pref. 20-60 deg C/hr in the temp. range of 700-900, esp. 800-900 deg.C in the heating process of finish annealing, and it is slowly heated from an optional temp. within 900- 1,000 deg.C to a temp. where more than 50% of secondary recrystallization proceeds, pref. to 1,050 deg.C. After the secondary recrystallization proceeds well, the sheet is purification annealed at a temp. above 1,100, pref. 1,150 deg.C. Thus, the normal grain growth control effect of AlN is shown to the utmost limit to furhter enhance the GOSS structure of high integration degree, and hence the magnetic flux density can be increased condiderably.
JP10736177A 1977-09-07 1977-09-07 Manufacture of oriented silicon steel sheet with very high magnetic flux density Granted JPS5440227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10736177A JPS5440227A (en) 1977-09-07 1977-09-07 Manufacture of oriented silicon steel sheet with very high magnetic flux density

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10736177A JPS5440227A (en) 1977-09-07 1977-09-07 Manufacture of oriented silicon steel sheet with very high magnetic flux density

Publications (2)

Publication Number Publication Date
JPS5440227A true JPS5440227A (en) 1979-03-29
JPS5633450B2 JPS5633450B2 (en) 1981-08-04

Family

ID=14457119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10736177A Granted JPS5440227A (en) 1977-09-07 1977-09-07 Manufacture of oriented silicon steel sheet with very high magnetic flux density

Country Status (1)

Country Link
JP (1) JPS5440227A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5675577A (en) * 1979-11-21 1981-06-22 Kawasaki Steel Corp Formation of insulation film of directional silicon steel plate of excellent unformity
JPS59190325A (en) * 1983-04-09 1984-10-29 Nippon Steel Corp Production of grain-oriented silicon steel plate having excellent iron loss for which continuous casting method is applied
US4888066A (en) * 1987-09-18 1989-12-19 Nippon Steel Corporation Method for producing grain-oriented electrical steel sheet with very high magnetic flux density
US5888314A (en) * 1991-01-08 1999-03-30 Nippon Steel Corporation Process for preparation of oriented electrical steel sheet having high flux density
JP2008156693A (en) * 2006-12-22 2008-07-10 Nippon Steel Corp Method for manufacturing grain-oriented electromagnetic steel sheet excellent in magnetic characteristic having good film

Families Citing this family (2)

* 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
JP5793305B2 (en) * 2007-12-28 2015-10-14 ポスコ Oriented electrical steel sheet with excellent magnetic properties and method for producing the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5675577A (en) * 1979-11-21 1981-06-22 Kawasaki Steel Corp Formation of insulation film of directional silicon steel plate of excellent unformity
JPS586783B2 (en) * 1979-11-21 1983-02-07 川崎製鉄株式会社 Method for forming insulation coating on grain-oriented silicon steel sheet
JPS59190325A (en) * 1983-04-09 1984-10-29 Nippon Steel Corp Production of grain-oriented silicon steel plate having excellent iron loss for which continuous casting method is applied
JPS631371B2 (en) * 1983-04-09 1988-01-12 Nippon Steel Corp
US4888066A (en) * 1987-09-18 1989-12-19 Nippon Steel Corporation Method for producing grain-oriented electrical steel sheet with very high magnetic flux density
US5888314A (en) * 1991-01-08 1999-03-30 Nippon Steel Corporation Process for preparation of oriented electrical steel sheet having high flux density
JP2008156693A (en) * 2006-12-22 2008-07-10 Nippon Steel Corp Method for manufacturing grain-oriented electromagnetic steel sheet excellent in magnetic characteristic having good film

Also Published As

Publication number Publication date
JPS5633450B2 (en) 1981-08-04

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