JPS54161518A - Manufacture of cold rolled steel plate with superior workability - Google Patents

Manufacture of cold rolled steel plate with superior workability

Info

Publication number
JPS54161518A
JPS54161518A JP7131178A JP7131178A JPS54161518A JP S54161518 A JPS54161518 A JP S54161518A JP 7131178 A JP7131178 A JP 7131178A JP 7131178 A JP7131178 A JP 7131178A JP S54161518 A JPS54161518 A JP S54161518A
Authority
JP
Japan
Prior art keywords
temp
steel plate
sec
cold rolled
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.)
Pending
Application number
JP7131178A
Other languages
Japanese (ja)
Inventor
Narumi Ando
Yoshito Tsuyama
Mitsunobu Abe
Hiroshi Hayakawa
Hideo Osone
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 JP7131178A priority Critical patent/JPS54161518A/en
Publication of JPS54161518A publication Critical patent/JPS54161518A/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

Abstract

PURPOSE:To manufacture a cold rolled steel plate with superior workability by cold rolling a hot rolled mild steel plate; setting a rapid cooling start temp. in accordance with annealing temp. and time in continuous annealing; and prescribing a cooling speed range attendant upon the start temp. CONSTITUTION:A hot rolled mild steel plate is cold rolled at a reduction ratio above 40% and continuously annealed at a temp. (T) of 700-800 deg.C for a time (t) below 60 sec. The annealed plate is then cooled from the annealing temp. (T) to a temp. (TQ) of the equation at a cooling rate below 50 deg.C/sec, followed by rapid cooling to 300-500 deg.C at a cooling rate above 150 deg.C/sec and overaging at 300- 500 deg.C for above 5 sec without reheating. By this method the supersaturation degree of dissolved C in the plate is held properly, high total elongation is attained in spite of short-time overaging, and a cold rolled plate with superior workability is obtd.
JP7131178A 1978-06-13 1978-06-13 Manufacture of cold rolled steel plate with superior workability Pending JPS54161518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7131178A JPS54161518A (en) 1978-06-13 1978-06-13 Manufacture of cold rolled steel plate with superior workability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7131178A JPS54161518A (en) 1978-06-13 1978-06-13 Manufacture of cold rolled steel plate with superior workability

Publications (1)

Publication Number Publication Date
JPS54161518A true JPS54161518A (en) 1979-12-21

Family

ID=13456937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7131178A Pending JPS54161518A (en) 1978-06-13 1978-06-13 Manufacture of cold rolled steel plate with superior workability

Country Status (1)

Country Link
JP (1) JPS54161518A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102851464A (en) * 2012-09-22 2013-01-02 山东泰山钢铁集团有限公司 Annealing technique of SUS410S martensitic stainless steel hot-rolled plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102851464A (en) * 2012-09-22 2013-01-02 山东泰山钢铁集团有限公司 Annealing technique of SUS410S martensitic stainless steel hot-rolled plate

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