JPS55158217A - Production of cold rolled steel plate of high lankford value - Google Patents

Production of cold rolled steel plate of high lankford value

Info

Publication number
JPS55158217A
JPS55158217A JP6607079A JP6607079A JPS55158217A JP S55158217 A JPS55158217 A JP S55158217A JP 6607079 A JP6607079 A JP 6607079A JP 6607079 A JP6607079 A JP 6607079A JP S55158217 A JPS55158217 A JP S55158217A
Authority
JP
Japan
Prior art keywords
steel plate
rolled steel
cold rolled
lankford value
hot 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.)
Pending
Application number
JP6607079A
Other languages
Japanese (ja)
Inventor
Kazuhide Nakaoka
Akihiko Nishimoto
Yoshihiro Hosoya
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 Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP6607079A priority Critical patent/JPS55158217A/en
Publication of JPS55158217A publication Critical patent/JPS55158217A/en
Pending 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To produce the cold rolled steel plate of high lankford value by cold rolling the hot rolled steel plate of two-phase structure composed of ferrite and free low- temperature transformation phase as a blank and further box-annealing the same. CONSTITUTION:The low-carbon slab containing C; 0.02-0.10%, Si<1.0%, Mn; 0.2-1.5%, Al<0.08%, N<0.01% is hot rolled to plate material. In the process of cooling this hot rolled steel plate, it is quenched from the temperature of the A1 transformation point or more and A3 transformation point or less down to Ms point or less to be made into the two-phase structure composed of ferrite and low-temperature transformation phase of volume retio 5-40% (perferably martensite). After this hot rolled blank is cold rolled to a steel plate, the steel plate is batch-annealed in a box type annealing furnace, whereby the cold rolled steel plate of high lankford value is obtained.
JP6607079A 1979-05-30 1979-05-30 Production of cold rolled steel plate of high lankford value Pending JPS55158217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6607079A JPS55158217A (en) 1979-05-30 1979-05-30 Production of cold rolled steel plate of high lankford value

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6607079A JPS55158217A (en) 1979-05-30 1979-05-30 Production of cold rolled steel plate of high lankford value

Publications (1)

Publication Number Publication Date
JPS55158217A true JPS55158217A (en) 1980-12-09

Family

ID=13305208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6607079A Pending JPS55158217A (en) 1979-05-30 1979-05-30 Production of cold rolled steel plate of high lankford value

Country Status (1)

Country Link
JP (1) JPS55158217A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6274024A (en) * 1985-09-26 1987-04-04 Kobe Steel Ltd Manufacture of cold rolled high strength steel
US5558727A (en) * 1994-12-26 1996-09-24 Kawasaki Steel Corporation Steel sheet for automobiles having excellent impact resistance and method of manufacturing the steel sheet
US7534312B2 (en) * 2001-08-24 2009-05-19 Nippon Steel Corporation Steel plate exhibiting excellent workability and method for producing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6274024A (en) * 1985-09-26 1987-04-04 Kobe Steel Ltd Manufacture of cold rolled high strength steel
US5558727A (en) * 1994-12-26 1996-09-24 Kawasaki Steel Corporation Steel sheet for automobiles having excellent impact resistance and method of manufacturing the steel sheet
US7534312B2 (en) * 2001-08-24 2009-05-19 Nippon Steel Corporation Steel plate exhibiting excellent workability and method for producing the same
EP2415893A3 (en) * 2001-08-24 2012-10-17 Nippon Steel Corporation Steel sheet excellent in workability and method for producing the same
EP2415894A3 (en) * 2001-08-24 2012-10-17 Nippon Steel Corporation Steel sheet excellent in workability and method for producing the same

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