JPS54107420A - Manufacture of cold rolled steel plate with baking hardenability - Google Patents

Manufacture of cold rolled steel plate with baking hardenability

Info

Publication number
JPS54107420A
JPS54107420A JP1391978A JP1391978A JPS54107420A JP S54107420 A JPS54107420 A JP S54107420A JP 1391978 A JP1391978 A JP 1391978A JP 1391978 A JP1391978 A JP 1391978A JP S54107420 A JPS54107420 A JP S54107420A
Authority
JP
Japan
Prior art keywords
overaging treatment
steel plate
temperature
baking hardenability
cold rolling
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
JP1391978A
Other languages
Japanese (ja)
Inventor
Shinobu Aisaka
Osamu Kanehara
Masahiro Shiotsuki
Hideo Kobayashi
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 JP1391978A priority Critical patent/JPS54107420A/en
Publication of JPS54107420A publication Critical patent/JPS54107420A/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

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 endow a steel with excellent press moldability and baking hardenability by the procedure in which an Al-killed steel plate made by hot and cold rolling is annealed, then cooled quickly to an overaging treatment temperature, and further applied an overaging treatment under a specific condition. CONSTITUTION:An Al-killed steel ingot, containing 0.02 to 0.07% C, 0.10 to 0.40% Mn, 0.02 to 0.07 sol Al, and 0.002 to 0.008% Ni, is made into a steel plate by hot rolling, and then the steel plate is coiled at more than 650 deg.C and then regulated its thickness to the target thickness by cold rolling. After the cold rolling, it is annealed at 650 to 850 deg.C, and then cooled quickly from the annealing temperature to less than the overaging treatment temperature to crystallize oversaturated C solid solution, giving good and sufficient press moldability and baking hardenability as well as a lower ordinary temperature aging property than that of rimmed steel. The overaging treatment conditions, e.g., temperature T( deg.C), time t(min), and quick cooling rate V( deg.C/sec) before overaging treatment, are determined by the equation [I] (where T is overaging treatment temperature ( deg.C), t is overaging treatment time(min), and V is quick cooling rate before overaging treatment ( deg.C/sec)).
JP1391978A 1978-02-09 1978-02-09 Manufacture of cold rolled steel plate with baking hardenability Pending JPS54107420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1391978A JPS54107420A (en) 1978-02-09 1978-02-09 Manufacture of cold rolled steel plate with baking hardenability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1391978A JPS54107420A (en) 1978-02-09 1978-02-09 Manufacture of cold rolled steel plate with baking hardenability

Publications (1)

Publication Number Publication Date
JPS54107420A true JPS54107420A (en) 1979-08-23

Family

ID=11846570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1391978A Pending JPS54107420A (en) 1978-02-09 1978-02-09 Manufacture of cold rolled steel plate with baking hardenability

Country Status (1)

Country Link
JP (1) JPS54107420A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001893A1 (en) * 1980-11-26 1982-06-10 Yasuda Akira Method of manufacturing thin steel plate for drawing with baking curability
JPS61117225A (en) * 1985-10-31 1986-06-04 Nippon Kokan Kk <Nkk> Manufacture of high strength cold rolled steel sheet superior in press formability and baking hardenability

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001893A1 (en) * 1980-11-26 1982-06-10 Yasuda Akira Method of manufacturing thin steel plate for drawing with baking curability
JPS61117225A (en) * 1985-10-31 1986-06-04 Nippon Kokan Kk <Nkk> Manufacture of high strength cold rolled steel sheet superior in press formability and baking hardenability

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