JPS5681627A - Production of directional silicon steel plate of superior repetitive bending characteristic - Google Patents

Production of directional silicon steel plate of superior repetitive bending characteristic

Info

Publication number
JPS5681627A
JPS5681627A JP15673179A JP15673179A JPS5681627A JP S5681627 A JPS5681627 A JP S5681627A JP 15673179 A JP15673179 A JP 15673179A JP 15673179 A JP15673179 A JP 15673179A JP S5681627 A JPS5681627 A JP S5681627A
Authority
JP
Japan
Prior art keywords
steel plate
annealing
silicon steel
plate
subjected
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
JP15673179A
Other languages
Japanese (ja)
Other versions
JPS5830936B2 (en
Inventor
Nobuyuki Morito
Mototomo Sugiyama
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP15673179A priority Critical patent/JPS5830936B2/en
Publication of JPS5681627A publication Critical patent/JPS5681627A/en
Publication of JPS5830936B2 publication Critical patent/JPS5830936B2/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

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)
  • Chemical Treatment Of Metals (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

PURPOSE:To improve repetitive bending characteristics by subjecting a cold-rolled directional silicon steel plate to decarburization annealing and final anealing then performing flattening annealing accompanying cooling owing to specific conditions. CONSTITUTION:A silicon steel slab is hot-rolled to a steel plate which is then subjected to intermediate annealing for 5min at 900 deg.C, after which it is cold-rolled to final plate thickness. This silicon steel plate is decarburization-annealed in wet hydrogen for 3min at 820 deg.C, after which an annealing separating agent of MgO+ 1.5% TiO2 is coated and the plate is subjected to final annealing. Next, a phosphate base insulation film is formed, after which the plate is subjected to flattening annealing. The flattening annealing is accomplished by soaking the steel plate for 5sec-3min at 780-850 deg.C in a neutral atmosphere then slow cooling the same at cooling rates of average 2-20 deg.C/sec for 780 deg.C-300 deg.C. Otherwise, the plate is cooled at 7-50 deg.C/sec in a temp. range of 700-500 deg.C, and is slow cooled at cooling rates of 2-15 deg.C/sec between 500-300 deg.C, whereby it is subjected to flattening annealing. The repetitive bending characteristics of the silicon steel plate improve.
JP15673179A 1979-12-05 1979-12-05 Method for manufacturing grain-oriented silicon steel sheet with excellent repeated bending properties Expired JPS5830936B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15673179A JPS5830936B2 (en) 1979-12-05 1979-12-05 Method for manufacturing grain-oriented silicon steel sheet with excellent repeated bending properties

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15673179A JPS5830936B2 (en) 1979-12-05 1979-12-05 Method for manufacturing grain-oriented silicon steel sheet with excellent repeated bending properties

Publications (2)

Publication Number Publication Date
JPS5681627A true JPS5681627A (en) 1981-07-03
JPS5830936B2 JPS5830936B2 (en) 1983-07-02

Family

ID=15634091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15673179A Expired JPS5830936B2 (en) 1979-12-05 1979-12-05 Method for manufacturing grain-oriented silicon steel sheet with excellent repeated bending properties

Country Status (1)

Country Link
JP (1) JPS5830936B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0432732A2 (en) * 1989-12-11 1991-06-19 Armco Inc. Thermal flattening semi-processed electrical steel
KR100470645B1 (en) * 2000-12-07 2005-03-07 주식회사 포스코 A method for manufacturing grain-oriented electrical steel sheet with excellent insulation film adhesion property
JP2009089660A (en) * 2007-10-10 2009-04-30 Matsuyama Plow Mfg Co Ltd Flail mower
WO2013175733A1 (en) * 2012-05-24 2013-11-28 Ｊｆｅスチール株式会社 Method for manufacturing grain-oriented electrical steel sheet
CN111926171A (en) * 2020-08-31 2020-11-13 武汉钢铁有限公司 Continuous annealing cooling control method for cold-rolled non-oriented silicon steel strip

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0432732A2 (en) * 1989-12-11 1991-06-19 Armco Inc. Thermal flattening semi-processed electrical steel
EP0432732A3 (en) * 1989-12-11 1994-06-22 Armco Inc Thermal flattening semi-processed electrical steel
KR100470645B1 (en) * 2000-12-07 2005-03-07 주식회사 포스코 A method for manufacturing grain-oriented electrical steel sheet with excellent insulation film adhesion property
JP2009089660A (en) * 2007-10-10 2009-04-30 Matsuyama Plow Mfg Co Ltd Flail mower
WO2013175733A1 (en) * 2012-05-24 2013-11-28 Ｊｆｅスチール株式会社 Method for manufacturing grain-oriented electrical steel sheet
JPWO2013175733A1 (en) * 2012-05-24 2016-01-12 Ｊｆｅスチール株式会社 Method for producing grain-oriented electrical steel sheet
CN111926171A (en) * 2020-08-31 2020-11-13 武汉钢铁有限公司 Continuous annealing cooling control method for cold-rolled non-oriented silicon steel strip
CN111926171B (en) * 2020-08-31 2022-04-29 武汉钢铁有限公司 Continuous annealing cooling control method for cold-rolled non-oriented silicon steel strip

Also Published As

Publication number Publication date
JPS5830936B2 (en) 1983-07-02

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