JPS572841A - Production of high strength cold-rolled steel plate which has high baking hardness and is superior in aging resistance and press workability by continuous annealing - Google Patents

Production of high strength cold-rolled steel plate which has high baking hardness and is superior in aging resistance and press workability by continuous annealing

Info

Publication number
JPS572841A
JPS572841A JP7615880A JP7615880A JPS572841A JP S572841 A JPS572841 A JP S572841A JP 7615880 A JP7615880 A JP 7615880A JP 7615880 A JP7615880 A JP 7615880A JP S572841 A JPS572841 A JP S572841A
Authority
JP
Japan
Prior art keywords
steel plate
continuous annealing
superior
rolled steel
press workability
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
JP7615880A
Other languages
Japanese (ja)
Other versions
JPS6046165B2 (en
Inventor
Osamu Akisue
Teruaki Yamada
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 JP55076158A priority Critical patent/JPS6046165B2/en
Publication of JPS572841A publication Critical patent/JPS572841A/en
Publication of JPS6046165B2 publication Critical patent/JPS6046165B2/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
    • 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 Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To produce a high strength cold-rolled steel plate which has high baking hardness, and is superior in again resistance and press workability by subjecting a steel contg. specific ratios of C, Mn, P, Al to hot rolling and cold rolling then to continuous annealing under specific conditions. CONSTITUTION:The steel contg. 0.045-0.150% C, 0.08-0.70% Mn, <=0.13% P, 0.020-0.080% Al, and <=0.17% C+P and the balance consisting of Fe and unavoidable impurities is hot-rolled. It is coiled at >=630 deg.C, and is cold-rolled. Thence, in performing continuous annealing, the steel plate is soaked for 10sec- 2min at 700-900 deg.C, and is cooled at >=40 deg.C/sec cooling rates between 650- 520 deg.C. Subsequently, the cooling is stopped at 300 deg.C, and aging treatment of >=30sec is carried out at 300-500 deg.C temps.
JP55076158A 1980-06-06 1980-06-06 A method for producing high-strength cold-rolled steel sheets with high bake hardenability, excellent aging resistance, and press workability by continuous annealing. Expired JPS6046165B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55076158A JPS6046165B2 (en) 1980-06-06 1980-06-06 A method for producing high-strength cold-rolled steel sheets with high bake hardenability, excellent aging resistance, and press workability by continuous annealing.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55076158A JPS6046165B2 (en) 1980-06-06 1980-06-06 A method for producing high-strength cold-rolled steel sheets with high bake hardenability, excellent aging resistance, and press workability by continuous annealing.

Publications (2)

Publication Number Publication Date
JPS572841A true JPS572841A (en) 1982-01-08
JPS6046165B2 JPS6046165B2 (en) 1985-10-15

Family

ID=13597236

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55076158A Expired JPS6046165B2 (en) 1980-06-06 1980-06-06 A method for producing high-strength cold-rolled steel sheets with high bake hardenability, excellent aging resistance, and press workability by continuous annealing.

Country Status (1)

Country Link
JP (1) JPS6046165B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956533A (en) * 1982-09-24 1984-04-02 Kawasaki Steel Corp Method for cooling steel sheet with gas in continuous annealing
JPS64221A (en) * 1987-04-10 1989-01-05 Signode Corp Method for continuously treating cold-rolled carbon-manganese steel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02115062A (en) * 1988-10-21 1990-04-27 Iseki & Co Ltd Liquid spreader of movable pest control machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS491969A (en) * 1972-04-24 1974-01-09
JPS5215046A (en) * 1975-07-26 1977-02-04 Toyo Kaiyo Kaihatsu Kk Method of reducing support force by liquid
JPS5562125A (en) * 1978-11-04 1980-05-10 Nippon Kokan Kk <Nkk> Preparation of high strength cold rolled steel sheet having dent resisting property excellent in press moldability

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS491969A (en) * 1972-04-24 1974-01-09
JPS5215046A (en) * 1975-07-26 1977-02-04 Toyo Kaiyo Kaihatsu Kk Method of reducing support force by liquid
JPS5562125A (en) * 1978-11-04 1980-05-10 Nippon Kokan Kk <Nkk> Preparation of high strength cold rolled steel sheet having dent resisting property excellent in press moldability

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956533A (en) * 1982-09-24 1984-04-02 Kawasaki Steel Corp Method for cooling steel sheet with gas in continuous annealing
JPS6246614B2 (en) * 1982-09-24 1987-10-02 Kawasaki Seitetsu Kk
JPS64221A (en) * 1987-04-10 1989-01-05 Signode Corp Method for continuously treating cold-rolled carbon-manganese steel

Also Published As

Publication number Publication date
JPS6046165B2 (en) 1985-10-15

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