JPS5681626A - 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
JPS5681626A
JPS5681626A JP15673079A JP15673079A JPS5681626A JP S5681626 A JPS5681626 A JP S5681626A JP 15673079 A JP15673079 A JP 15673079A JP 15673079 A JP15673079 A JP 15673079A JP S5681626 A JPS5681626 A JP S5681626A
Authority
JP
Japan
Prior art keywords
annealing
steel plate
silicon steel
subjected
rolled
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
JP15673079A
Other languages
Japanese (ja)
Other versions
JPS5922771B2 (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 JP15673079A priority Critical patent/JPS5922771B2/en
Publication of JPS5681626A publication Critical patent/JPS5681626A/en
Publication of JPS5922771B2 publication Critical patent/JPS5922771B2/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 decarburization annealing a cold-rolled directional silicon steel plate and subjecting the same to final annealing then flattening annealing the same in a specific atmosphere. CONSTITUTION:A silicon steel slab is hot-rolled to a steel plate which is then subjected to intermediate annealing in 5min at 900 deg.C, and is thence cold-rolled, to a steel plate of final plate thickness. Next, it is subjected to decarburization annealing 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 and is predried, after which the plate is soaked for 1min at 800 deg.C, and is subjected to flattening annealing in which the rates of cooling down to 100 deg.C are kept roughly at 10 deg.C/sec. and 40 deg.C/sec. In this case, the annealing atmosphere is a neutral atmosphere such as N2 or weak reducing or weak carburizing atmosphere and the dew point is kept at <=25 deg.C, whereby the repetitive bending characteristics of the cold-rolled silicon steel plate are considerably improved.
JP15673079A 1979-12-05 1979-12-05 Method for manufacturing grain-oriented silicon steel sheet with excellent repeated bending properties Expired JPS5922771B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15673079A JPS5922771B2 (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
JP15673079A JPS5922771B2 (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
JPS5681626A true JPS5681626A (en) 1981-07-03
JPS5922771B2 JPS5922771B2 (en) 1984-05-29

Family

ID=15634070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15673079A Expired JPS5922771B2 (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) JPS5922771B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6193512A (en) * 1984-10-15 1986-05-12 三菱電線工業株式会社 Manufacture of shielded cable
JP2004143532A (en) * 2002-10-24 2004-05-20 Jfe Steel Kk Grain oriented silicon steel sheet having no forsterite film, and excellent in adhesion to insulation film, and production method therefor
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
KR100950405B1 (en) 2003-04-04 2010-03-29 주식회사 포스코 Insulation coating method of electric steel sheet and Insulation coating electric steel sheet thereof
CN115404329A (en) * 2022-08-24 2022-11-29 北冶功能材料(江苏)有限公司 Silicon steel strip and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6193512A (en) * 1984-10-15 1986-05-12 三菱電線工業株式会社 Manufacture of shielded cable
JPH0444367B2 (en) * 1984-10-15 1992-07-21 Mitsubishi Cable Ind Ltd
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
JP2004143532A (en) * 2002-10-24 2004-05-20 Jfe Steel Kk Grain oriented silicon steel sheet having no forsterite film, and excellent in adhesion to insulation film, and production method therefor
KR100950405B1 (en) 2003-04-04 2010-03-29 주식회사 포스코 Insulation coating method of electric steel sheet and Insulation coating electric steel sheet thereof
CN115404329A (en) * 2022-08-24 2022-11-29 北冶功能材料(江苏)有限公司 Silicon steel strip and preparation method thereof

Also Published As

Publication number Publication date
JPS5922771B2 (en) 1984-05-29

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