JPS5550421A - Continuous annealing method - Google Patents

Continuous annealing method

Info

Publication number
JPS5550421A
JPS5550421A JP12166178A JP12166178A JPS5550421A JP S5550421 A JPS5550421 A JP S5550421A JP 12166178 A JP12166178 A JP 12166178A JP 12166178 A JP12166178 A JP 12166178A JP S5550421 A JPS5550421 A JP S5550421A
Authority
JP
Japan
Prior art keywords
strip
temperature
carrying
warm water
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.)
Granted
Application number
JP12166178A
Other languages
Japanese (ja)
Other versions
JPS585247B2 (en
Inventor
Kazuhide Nakaoka
Akihiko Nishimoto
Masaki Omura
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 JP12166178A priority Critical patent/JPS585247B2/en
Publication of JPS5550421A publication Critical patent/JPS5550421A/en
Publication of JPS585247B2 publication Critical patent/JPS585247B2/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
    • C21D9/52—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 Strip Materials And Filament Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To obtain the strip having no oxidation film and unnecessary to reheat for over aging, by hardening in warm water at a stationary state heating more than recrystallizing temperature and heightening quenching stop temperature and then, carrying out over aging treatment in the atmosphere gas containing H2 at the above temperature, at the time of carrying out continuous annealing of the strip. CONSTITUTION:Strip is uniformly heated at more than recrystalization temperature in annealing furnace at the time of carrying out continuous annealing of the strip. The above strip is hardened in warm water at not less than 50 deg.C in stationary state as well as possible from the temperature more than 550 deg.C without using underwater spray. Then, the above strip is extracted from the warm water at 300-500 deg.C of quenching stop temperature and aging treatment is carried out in the atmosphere gas mixed H2 gas not less than 10% without reheating at this temperature. Good shaped strip having nearly no oxidation film, is obtained. On this occasion, reheating for over aging treatment is unnecessary.
JP12166178A 1978-10-03 1978-10-03 Continuous annealing method Expired JPS585247B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12166178A JPS585247B2 (en) 1978-10-03 1978-10-03 Continuous annealing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12166178A JPS585247B2 (en) 1978-10-03 1978-10-03 Continuous annealing method

Publications (2)

Publication Number Publication Date
JPS5550421A true JPS5550421A (en) 1980-04-12
JPS585247B2 JPS585247B2 (en) 1983-01-29

Family

ID=14816761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12166178A Expired JPS585247B2 (en) 1978-10-03 1978-10-03 Continuous annealing method

Country Status (1)

Country Link
JP (1) JPS585247B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04166424A (en) * 1990-10-29 1992-06-12 Yanmar Agricult Equip Co Ltd Transmission arrangement structure for tilling machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04166424A (en) * 1990-10-29 1992-06-12 Yanmar Agricult Equip Co Ltd Transmission arrangement structure for tilling machine

Also Published As

Publication number Publication date
JPS585247B2 (en) 1983-01-29

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