JPS57177834A - Hot forming method for steel plate - Google Patents

Hot forming method for steel plate

Info

Publication number
JPS57177834A
JPS57177834A JP56061458A JP6145881A JPS57177834A JP S57177834 A JPS57177834 A JP S57177834A JP 56061458 A JP56061458 A JP 56061458A JP 6145881 A JP6145881 A JP 6145881A JP S57177834 A JPS57177834 A JP S57177834A
Authority
JP
Japan
Prior art keywords
work
ferrite
austenite
uniform
steel plate
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
JP56061458A
Other languages
Japanese (ja)
Other versions
JPH0116210B2 (en
Inventor
Tamotsu Hashimoto
Yasuo Otani
Katsuya Azuma
Masayasu Kojima
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
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP56061458A priority Critical patent/JPS57177834A/en
Publication of JPS57177834A publication Critical patent/JPS57177834A/en
Publication of JPH0116210B2 publication Critical patent/JPH0116210B2/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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE:To facilitate hot formation such as bulging work, contracting work, boring-up work, and bending work by heating a steel plate which has a specific ferrite grain size number in both of an austenite single-phase area right above Ac3 and a ferrite plus austenite two-phase area. CONSTITUTION:A steep plate having uniform thin grain structure of >=#10 in ferrite grain size number manufactured by a control rolling method or annealing treatment performs recrystallization and dynamice recovery easily when ferrite grains have work strain, thereby suppressing the occurrence of work breaking. Further, austenite grains obtained from this structure are uniform and extremely fine, so the austenite grains cause work recrystallization easily during deformation to attain large and uniform elongation.
JP56061458A 1981-04-24 1981-04-24 Hot forming method for steel plate Granted JPS57177834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56061458A JPS57177834A (en) 1981-04-24 1981-04-24 Hot forming method for steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56061458A JPS57177834A (en) 1981-04-24 1981-04-24 Hot forming method for steel plate

Publications (2)

Publication Number Publication Date
JPS57177834A true JPS57177834A (en) 1982-11-01
JPH0116210B2 JPH0116210B2 (en) 1989-03-23

Family

ID=13171605

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56061458A Granted JPS57177834A (en) 1981-04-24 1981-04-24 Hot forming method for steel plate

Country Status (1)

Country Link
JP (1) JPS57177834A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5389164A (en) * 1993-02-10 1995-02-14 Nippon Steel Corporation Production method of strong and tough thick steel plate
JP2007031802A (en) * 2005-07-29 2007-02-08 Jfe Steel Kk Method for working ultrahigh-strength steel sheet showing superplasticity

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0373210A (en) * 1989-05-25 1991-03-28 G N Tool Kk High hardness cutting tool and manufacture and use thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5389164A (en) * 1993-02-10 1995-02-14 Nippon Steel Corporation Production method of strong and tough thick steel plate
JP2007031802A (en) * 2005-07-29 2007-02-08 Jfe Steel Kk Method for working ultrahigh-strength steel sheet showing superplasticity

Also Published As

Publication number Publication date
JPH0116210B2 (en) 1989-03-23

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