JPS5719335A - Production of high tensile cold rolled steel plate of superior formability - Google Patents

Production of high tensile cold rolled steel plate of superior formability

Info

Publication number
JPS5719335A
JPS5719335A JP9433880A JP9433880A JPS5719335A JP S5719335 A JPS5719335 A JP S5719335A JP 9433880 A JP9433880 A JP 9433880A JP 9433880 A JP9433880 A JP 9433880A JP S5719335 A JPS5719335 A JP S5719335A
Authority
JP
Japan
Prior art keywords
temp
rolled steel
cold rolled
steel plate
high tensile
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
JP9433880A
Other languages
Japanese (ja)
Other versions
JPS59575B2 (en
Inventor
Shuji Nakai
Seiichi Sugisawa
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP9433880A priority Critical patent/JPS59575B2/en
Publication of JPS5719335A publication Critical patent/JPS5719335A/en
Publication of JPS59575B2 publication Critical patent/JPS59575B2/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 easily produce a high tensile cold rolled steel plate of improved formability by subjecting a hot rolled steel of specific composition successively to coiling, cold rolling, preheating and holding, and recrystallization annealing respectively in specific conditions. CONSTITUTION:A steel consisting of <=0.15% C, <=0.20% Si, 0.40-3.0% Mn, <=0.20% P, 0.02-0.15% Al, 0.0025-0.25% N and the balance substantially iron is hot rolled and is coiled at below 600 deg.C. After pickling, it is cold rolled at >=40% draft. Thence, it is preheated and held to and at a temp. region above 350 deg.C and below recrystallization temp. for a short time, after which it is held for a short time in a temp. region above the recyrstallization temp. and below 850 deg.C, whereby it is again subjected to recrystallization annealing. Following to this, it is lowered of temp. down to 250-450 deg.C over aging treatment temps., or it is once quenched down to below 200 deg.C and after it is reheated, it is over aged at a 250-450 deg.C temp. region.
JP9433880A 1980-07-09 1980-07-09 Manufacturing method for high-strength cold-rolled steel sheets with excellent formability Expired JPS59575B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9433880A JPS59575B2 (en) 1980-07-09 1980-07-09 Manufacturing method for high-strength cold-rolled steel sheets with excellent formability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9433880A JPS59575B2 (en) 1980-07-09 1980-07-09 Manufacturing method for high-strength cold-rolled steel sheets with excellent formability

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP15353383A Division JPS5956528A (en) 1983-08-22 1983-08-22 Manufacture of high-tension cold-rolled steel plate with superior formability
JP15353483A Division JPS59133324A (en) 1983-08-22 1983-08-22 Manufacture of high-tension cold-rolled steel plate with superior formability

Publications (2)

Publication Number Publication Date
JPS5719335A true JPS5719335A (en) 1982-02-01
JPS59575B2 JPS59575B2 (en) 1984-01-07

Family

ID=14107495

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9433880A Expired JPS59575B2 (en) 1980-07-09 1980-07-09 Manufacturing method for high-strength cold-rolled steel sheets with excellent formability

Country Status (1)

Country Link
JP (1) JPS59575B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4591395A (en) * 1983-05-05 1986-05-27 Armco Inc. Method of heat treating low carbon steel strip
KR100398383B1 (en) * 1998-12-10 2004-02-14 주식회사 포스코 Manufacturing method of high strength cold rolled steel sheet with excellent formability

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6285183A (en) * 1985-09-20 1987-04-18 Honda Motor Co Ltd Swash plate type hydraulic device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4591395A (en) * 1983-05-05 1986-05-27 Armco Inc. Method of heat treating low carbon steel strip
KR100398383B1 (en) * 1998-12-10 2004-02-14 주식회사 포스코 Manufacturing method of high strength cold rolled steel sheet with excellent formability

Also Published As

Publication number Publication date
JPS59575B2 (en) 1984-01-07

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