JPS5735626A - Manufacture of nonoriented silicon steel plate with superior magnetic characteristic - Google Patents

Manufacture of nonoriented silicon steel plate with superior magnetic characteristic

Info

Publication number
JPS5735626A
JPS5735626A JP10835180A JP10835180A JPS5735626A JP S5735626 A JPS5735626 A JP S5735626A JP 10835180 A JP10835180 A JP 10835180A JP 10835180 A JP10835180 A JP 10835180A JP S5735626 A JPS5735626 A JP S5735626A
Authority
JP
Japan
Prior art keywords
steel plate
temp
silicon steel
soaking
former step
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
JP10835180A
Other languages
Japanese (ja)
Other versions
JPS5915966B2 (en
Inventor
Kunisuke Miyoshi
Yoshiaki Shimoyama
Yoshitaka Hiromae
Sadami Kosaka
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 JP55108351A priority Critical patent/JPS5915966B2/en
Publication of JPS5735626A publication Critical patent/JPS5735626A/en
Publication of JPS5915966B2 publication Critical patent/JPS5915966B2/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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys 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)
  • Heat Treatment Of Sheet Steel (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

PURPOSE:To obtain a high grade silicon steel plate with a low iron loss value such as >=S8 by adopting short time stepped soaking in a specified temp. range as the condition of the final recrystallization annealing of a steel strip worked from a slab for a nonoriented silicon steel plate. CONSTITUTION:A slab for a nonoriented silicon steel plate contg. <=0.010% C, <=4.0% Si and <=1.0% Al is worked into a steel strip having the thickness of the product. This strip is quickly annealed in a nonoxidizing atomosphere at 850-1,000 deg.C for about 30sec-4min in the former step and at 1,000-1,100 deg.C for <=1min in the latter step. When the temp. in the former step is below the lower limit, predetermined recrystallization is not attained to deteriorate the iron loss, and when the temp. exceeds the upper limit, impure products such as nitride and oxide are easily formed to deteriorate the magnetism. On the other hand, the temp. in the latter step is below the lower limit, the recrystallized grains are smaller to make enhancement in magnetism difficult, and when the temp. exceeds the uppe limit, impure products are formed on the surface of the steel plate. Shorter holding time for soaking in the former step makes the recrystallized grains smaller. Longer holding time for soaking in the former step and that in the latter step result in a slight effect and no effect, respectively.
JP55108351A 1980-08-08 1980-08-08 Method for manufacturing non-oriented silicon steel sheet with excellent magnetic properties Expired JPS5915966B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55108351A JPS5915966B2 (en) 1980-08-08 1980-08-08 Method for manufacturing non-oriented silicon steel sheet with excellent magnetic properties

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55108351A JPS5915966B2 (en) 1980-08-08 1980-08-08 Method for manufacturing non-oriented silicon steel sheet with excellent magnetic properties

Publications (2)

Publication Number Publication Date
JPS5735626A true JPS5735626A (en) 1982-02-26
JPS5915966B2 JPS5915966B2 (en) 1984-04-12

Family

ID=14482499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55108351A Expired JPS5915966B2 (en) 1980-08-08 1980-08-08 Method for manufacturing non-oriented silicon steel sheet with excellent magnetic properties

Country Status (1)

Country Link
JP (1) JPS5915966B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62244107A (en) * 1986-04-16 1987-10-24 Hitachi Metal Precision:Kk Precision casting yoke
JPS62287043A (en) * 1986-06-04 1987-12-12 Nippon Kokan Kk <Nkk> High silicon iron plate with excellent magnetic properties
US5803989A (en) * 1994-06-24 1998-09-08 Nippon Steel Corporation Process for producing non-oriented electrical steel sheet having high magnetic flux density and low iron loss
US6743304B2 (en) 2000-12-11 2004-06-01 Nippon Steel Corporation Non-oriented electrical steel sheet with ultra-high magnetic flux density and production method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62244107A (en) * 1986-04-16 1987-10-24 Hitachi Metal Precision:Kk Precision casting yoke
JPS62287043A (en) * 1986-06-04 1987-12-12 Nippon Kokan Kk <Nkk> High silicon iron plate with excellent magnetic properties
US5803989A (en) * 1994-06-24 1998-09-08 Nippon Steel Corporation Process for producing non-oriented electrical steel sheet having high magnetic flux density and low iron loss
US6743304B2 (en) 2000-12-11 2004-06-01 Nippon Steel Corporation Non-oriented electrical steel sheet with ultra-high magnetic flux density and production method thereof

Also Published As

Publication number Publication date
JPS5915966B2 (en) 1984-04-12

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