JPS5658929A - Production of cold-rolled steel plate of superior deep drawability - Google Patents

Production of cold-rolled steel plate of superior deep drawability

Info

Publication number
JPS5658929A
JPS5658929A JP13358779A JP13358779A JPS5658929A JP S5658929 A JPS5658929 A JP S5658929A JP 13358779 A JP13358779 A JP 13358779A JP 13358779 A JP13358779 A JP 13358779A JP S5658929 A JPS5658929 A JP S5658929A
Authority
JP
Japan
Prior art keywords
cold
deposition
rolled steel
steel
deep drawability
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
JP13358779A
Other languages
Japanese (ja)
Inventor
Hiroshi Takechi
Soji Matsuo
Norimasa Uehara
Tsutomu Fujii
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 JP13358779A priority Critical patent/JPS5658929A/en
Publication of JPS5658929A publication Critical patent/JPS5658929A/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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets

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 a cold-rolled steel plate of superior deep drawability by hot rolling, cold rolling, continuously annealing and cooling an extra low carbon Al killed steel slab under specific conditions then subjecting the same to overaging treatment. CONSTITUTION:A slab of an Al killed steel contg. 0.004-0.025% C, 0.05-0.40% Mn, 0.02-0.10% Sol.Al is hot-rolled to a plate material, after which it is coiled at <=700 deg.C temp., whereby the deposition of AlN is suppressed. This hot-rolled steel material is heated to 750-850 deg.C at 10-60 deg.C/sec. temperature raising rates and is then continuously annealed for 10-120sec., whereby the deposition of AlN at the heating stage is suppressed. Next, it is cooled to the temperatures between 500 deg.C-A1 transformation point at 5-250 deg.C/sec. cooling rates and is subjected to overaging for 1-3min at these temperatures. The AlN in the steel is utilized as deposition nucleus to accelerate the deposition of C in the steel and provide remarkable effect of nonaging, whereby the cold-rolled steel plate of superior deep drawability is produced.
JP13358779A 1979-10-18 1979-10-18 Production of cold-rolled steel plate of superior deep drawability Pending JPS5658929A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13358779A JPS5658929A (en) 1979-10-18 1979-10-18 Production of cold-rolled steel plate of superior deep drawability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13358779A JPS5658929A (en) 1979-10-18 1979-10-18 Production of cold-rolled steel plate of superior deep drawability

Publications (1)

Publication Number Publication Date
JPS5658929A true JPS5658929A (en) 1981-05-22

Family

ID=15108285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13358779A Pending JPS5658929A (en) 1979-10-18 1979-10-18 Production of cold-rolled steel plate of superior deep drawability

Country Status (1)

Country Link
JP (1) JPS5658929A (en)

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