JPS57169022A - Production of cold rolled mild steel plate by continuous annealing - Google Patents

Production of cold rolled mild steel plate by continuous annealing

Info

Publication number
JPS57169022A
JPS57169022A JP5478181A JP5478181A JPS57169022A JP S57169022 A JPS57169022 A JP S57169022A JP 5478181 A JP5478181 A JP 5478181A JP 5478181 A JP5478181 A JP 5478181A JP S57169022 A JPS57169022 A JP S57169022A
Authority
JP
Japan
Prior art keywords
temp
rolled
steel plate
temps
continuous annealing
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
JP5478181A
Other languages
Japanese (ja)
Inventor
Hiroyoshi Yashiki
Seiichi Sugisawa
Shuji Nakai
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 JP5478181A priority Critical patent/JPS57169022A/en
Publication of JPS57169022A publication Critical patent/JPS57169022A/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 Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To produce a cold-rolled mild steel plate of superior deep drawability by decreasing the contents of Al, N in aluminum killed steel, adding Ti and subjecting said steel to rolling and heat treatment under specific conditions. CONSTITUTION:An ingot of the aluminum killed steel contg. 0.02-0.08% C, <0.03% Si, <0.40% Mn, <0.050% SolAl, and 0.0020% N, and contg. Ti in such a way that the value of Ti/N attains >=3 is first hot-rolled, then it is finish- rolled at a temp. higher than the Ar3 transformation point. This is coiled at <=700 deg.C, and is further cold-rolled, whereby the steel plate of intended thickness is obtained. This is heated up to a temp. higher than the recrystallization temp. and a temp. lower than the Ar3 transformation point by a continuous annealing system and is maintained at these temps. for 20-120sec to cause recrystallization and grain growth to make mild, whereby formability is improved. Thence, it is reduced of temp. down to 250-450 deg.C overaging temps., and is held at these temps. for 1-10min, whereby the solid soln. carbon which is the cause for generation of aging is reduced.
JP5478181A 1981-04-11 1981-04-11 Production of cold rolled mild steel plate by continuous annealing Pending JPS57169022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5478181A JPS57169022A (en) 1981-04-11 1981-04-11 Production of cold rolled mild steel plate by continuous annealing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5478181A JPS57169022A (en) 1981-04-11 1981-04-11 Production of cold rolled mild steel plate by continuous annealing

Publications (1)

Publication Number Publication Date
JPS57169022A true JPS57169022A (en) 1982-10-18

Family

ID=12980307

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5478181A Pending JPS57169022A (en) 1981-04-11 1981-04-11 Production of cold rolled mild steel plate by continuous annealing

Country Status (1)

Country Link
JP (1) JPS57169022A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63235434A (en) * 1987-03-23 1988-09-30 Sumitomo Metal Ind Ltd Manufacture of cold-rolled steel sheet for working
JPH03503185A (en) * 1988-01-29 1991-07-18 プロイサク　シュタール　アクチエンゲゼルシャフト Method for manufacturing cold rolled thin plate or strip
JPH05195146A (en) * 1992-01-22 1993-08-03 Nkk Corp Cold rolled steel sheet for deep drawing excellent in quality stability and its production
EP0775757A1 (en) * 1995-11-24 1997-05-28 Preussag Stahl Ag Process and apparatus for hot dipping age resistant steel sheet
KR100338702B1 (en) * 1997-11-11 2002-09-19 주식회사 포스코 METHOD FOR MANUFACTURING 60kg CLASS COLLED ROLLING STEEL WITH HIGH DUCTILITY
KR100338709B1 (en) * 1997-03-13 2002-11-14 주식회사 포스코 Method for manufacturing tin plating plate used in dome and adona of aerosol
EP1805339A1 (en) * 2004-09-30 2007-07-11 Posco Co., Ltd. High strength cold rolled steel sheet having excellent shape freezability, and method for manufacturing the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63235434A (en) * 1987-03-23 1988-09-30 Sumitomo Metal Ind Ltd Manufacture of cold-rolled steel sheet for working
JPH03503185A (en) * 1988-01-29 1991-07-18 プロイサク　シュタール　アクチエンゲゼルシャフト Method for manufacturing cold rolled thin plate or strip
JPH05195146A (en) * 1992-01-22 1993-08-03 Nkk Corp Cold rolled steel sheet for deep drawing excellent in quality stability and its production
EP0775757A1 (en) * 1995-11-24 1997-05-28 Preussag Stahl Ag Process and apparatus for hot dipping age resistant steel sheet
KR100338709B1 (en) * 1997-03-13 2002-11-14 주식회사 포스코 Method for manufacturing tin plating plate used in dome and adona of aerosol
KR100338702B1 (en) * 1997-11-11 2002-09-19 주식회사 포스코 METHOD FOR MANUFACTURING 60kg CLASS COLLED ROLLING STEEL WITH HIGH DUCTILITY
EP1805339A1 (en) * 2004-09-30 2007-07-11 Posco Co., Ltd. High strength cold rolled steel sheet having excellent shape freezability, and method for manufacturing the same
EP1805339A4 (en) * 2004-09-30 2009-03-25 Posco Co Ltd High strength cold rolled steel sheet having excellent shape freezability, and method for manufacturing the same

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