JPS57207122A - Production of cold rolled steel plate having superior aging resistance by continuous annealing - Google Patents

Production of cold rolled steel plate having superior aging resistance by continuous annealing

Info

Publication number
JPS57207122A
JPS57207122A JP8958381A JP8958381A JPS57207122A JP S57207122 A JPS57207122 A JP S57207122A JP 8958381 A JP8958381 A JP 8958381A JP 8958381 A JP8958381 A JP 8958381A JP S57207122 A JPS57207122 A JP S57207122A
Authority
JP
Japan
Prior art keywords
temp
strip
heated
steel plate
aging resistance
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
JP8958381A
Other languages
Japanese (ja)
Other versions
JPS619366B2 (en
Inventor
Hiroyuki Kuroda
Nobuo Tanaka
Koichi Osawa
Kazuo Matsufuji
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP8958381A priority Critical patent/JPS57207122A/en
Publication of JPS57207122A publication Critical patent/JPS57207122A/en
Publication of JPS619366B2 publication Critical patent/JPS619366B2/ja
Granted 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length

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 obtain a steel plate of a low aging index and superior aging resistance with slight reheating energy in the stage of winding a steel strip heated to its recrystallization temp. or above on a roll, and quickly cooling the same then subjecting the strip to an overaging treatment by heating the strip by specifying the quick cooling temp. and performing the overaging treatment. CONSTITUTION:After a steel strip is heated to about 600-850 deg.C, it is wound on a cooled roll in contact therewith and is quickly cooled down to 200-350 deg.C. It is heated to a temp. lower than 400 deg.C which is an overaging treatment temp., and is overaged. Here, the reason for setting the lower limit temp. of the cooling at 200 deg.C lies in the purposes of reducing the energy required for the next reheating and effecting the deposition of a solid soln. C efficiently in a short time. The upper limit is set at 350 deg.C because the degree of oversaturation of the C does not increase so much. More specifically, it is the upper limit temp. necessary for increasing the degree of oversaturation of the C in the steel adequately and for creating the state permitting easy deposition of the C.
JP8958381A 1981-06-12 1981-06-12 Production of cold rolled steel plate having superior aging resistance by continuous annealing Granted JPS57207122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8958381A JPS57207122A (en) 1981-06-12 1981-06-12 Production of cold rolled steel plate having superior aging resistance by continuous annealing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8958381A JPS57207122A (en) 1981-06-12 1981-06-12 Production of cold rolled steel plate having superior aging resistance by continuous annealing

Publications (2)

Publication Number Publication Date
JPS57207122A true JPS57207122A (en) 1982-12-18
JPS619366B2 JPS619366B2 (en) 1986-03-22

Family

ID=13974803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8958381A Granted JPS57207122A (en) 1981-06-12 1981-06-12 Production of cold rolled steel plate having superior aging resistance by continuous annealing

Country Status (1)

Country Link
JP (1) JPS57207122A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5544584A (en) * 1978-09-27 1980-03-28 Nippon Steel Corp Production by continuous annealing of cold rolled steel plate of superior workability and age resistance
JPS565930A (en) * 1979-06-28 1981-01-22 Nippon Kokan Kk <Nkk> Method and apparatus for cooling steel strip in continuous annealing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5544584A (en) * 1978-09-27 1980-03-28 Nippon Steel Corp Production by continuous annealing of cold rolled steel plate of superior workability and age resistance
JPS565930A (en) * 1979-06-28 1981-01-22 Nippon Kokan Kk <Nkk> Method and apparatus for cooling steel strip in continuous annealing

Also Published As

Publication number Publication date
JPS619366B2 (en) 1986-03-22

Similar Documents

Publication Publication Date Title
ES416138A1 (en) Continuous annealing method for cold reduced steel strip
JPS644429A (en) Manufacture of high-strength cold-rolled steel sheet with high (r) value
JPS57207122A (en) Production of cold rolled steel plate having superior aging resistance by continuous annealing
JPS5570404A (en) Manufacture of hot coil of austenitic stainless steel
JPS5757829A (en) Production of non-directional electromagnetic steel
JPS5629620A (en) Continuous annealing of cold-rolled steel strip in short time
JPS5554526A (en) Manufacture of cold rolled steel plate with superior deep drawability by continuous annealing
US4313772A (en) Continuous heat-treatment process for steel strip
JPS5591929A (en) Method and facility for continuous annealing of cold rolled steel strip
JPS6239208B2 (en)
JPS5544584A (en) Production by continuous annealing of cold rolled steel plate of superior workability and age resistance
JPS5496419A (en) Manufacture of cold rolled steel sheet with superior workability by continuous annealing
JPS54110122A (en) Manufacture of cold rolled steel sheet with high workability and high aging resistance by continuous annealing
JPS55164024A (en) Continuous annealing method and apparatus therefor
JPS5547319A (en) Manufacture of thin steel sheet according to ultra short time annealing
JPS5665931A (en) Manufacture of cold-rolled steel sheet for press formation
JPS5693824A (en) Production of soft steel sheet using continuous annealing
JPS5741324A (en) Manufacture of stainless steel strip
JPS59136424A (en) Continuous annealing method of cold rolled steel plate for drawing
JPS5635728A (en) Cooling method for continuously annealed steel hoop
JPS5716120A (en) Manufacture of high-strength and high-yield ratio type hot-rolled high tensile steel plate
JPS56130423A (en) Production of original soft sheet for tin plating by continuous annealing method
JPS54112364A (en) Roll for sendzimir mill and its heat treating method
ES8606510A1 (en) Direct softening heat treatment of rolled rod
JPS54161518A (en) Manufacture of cold rolled steel plate with superior workability