JPS5760031A - Method for continuous cooling - Google Patents

Method for continuous cooling

Info

Publication number
JPS5760031A
JPS5760031A JP13547080A JP13547080A JPS5760031A JP S5760031 A JPS5760031 A JP S5760031A JP 13547080 A JP13547080 A JP 13547080A JP 13547080 A JP13547080 A JP 13547080A JP S5760031 A JPS5760031 A JP S5760031A
Authority
JP
Japan
Prior art keywords
cooling
temp
strip
equation
nozzles
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
JP13547080A
Other languages
Japanese (ja)
Other versions
JPS611492B2 (en
Inventor
Katsuhiko Yui
Yuji Sano
Norimoto Nagira
Katsumi Suehiro
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 JP13547080A priority Critical patent/JPS5760031A/en
Publication of JPS5760031A publication Critical patent/JPS5760031A/en
Publication of JPS611492B2 publication Critical patent/JPS611492B2/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
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling

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)
  • Control Of Heat Treatment Processes (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE:To perform more accurate controlling by applying the correction by the cooling effect of off nozzles upon the injection rates of refrigerant and effective cooling length calculated by model equations when controlling the cooling end point temp. and cooling rates for materials to be cooled to desired values. CONSTITUTION:To control a high temp. strip 10 to a desired cooling rate CR* and a cooling end point temp. T*o, the water flow density W* and effective cooling length le* of the equationsI, II (rho, Cp, h, u: the density, specific heat, thickness and speed of the strip 10, K: constant, G: wind flow density, Tw: water temp., Tg: wind temp. alpha-delta: constants, Ti: cooling start temp.) are set. here, if the le* is shorter than the cooling length lo, the nozzles 12, 14- on, for example, inlet side, are turned off, and gas of the extent of preventing overheating is flowed to these. Here, the equation III holds, and if the coefft. of heat transfer for cooling with the gas alone is defined as Hg, the Ti is lowered by the equation IV (Tx: the temp. of the strip 10 at the inlet of a cooler). This Ti is substituted in the equation II, whereby the le* is determined.
JP13547080A 1980-09-29 1980-09-29 Method for continuous cooling Granted JPS5760031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13547080A JPS5760031A (en) 1980-09-29 1980-09-29 Method for continuous cooling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13547080A JPS5760031A (en) 1980-09-29 1980-09-29 Method for continuous cooling

Publications (2)

Publication Number Publication Date
JPS5760031A true JPS5760031A (en) 1982-04-10
JPS611492B2 JPS611492B2 (en) 1986-01-17

Family

ID=15152457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13547080A Granted JPS5760031A (en) 1980-09-29 1980-09-29 Method for continuous cooling

Country Status (1)

Country Link
JP (1) JPS5760031A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6077932A (en) * 1983-10-03 1985-05-02 Nippon Steel Corp Steel cooling apparatus capable of widely controlling flow rate of refrigerant
JP2013185182A (en) * 2012-03-06 2013-09-19 Jfe Steel Corp Apparatus and method for manufacturing steel strip

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6077932A (en) * 1983-10-03 1985-05-02 Nippon Steel Corp Steel cooling apparatus capable of widely controlling flow rate of refrigerant
JP2013185182A (en) * 2012-03-06 2013-09-19 Jfe Steel Corp Apparatus and method for manufacturing steel strip

Also Published As

Publication number Publication date
JPS611492B2 (en) 1986-01-17

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