JPS5760029A - Method for controlling cooling - Google Patents

Method for controlling cooling

Info

Publication number
JPS5760029A
JPS5760029A JP13546880A JP13546880A JPS5760029A JP S5760029 A JPS5760029 A JP S5760029A JP 13546880 A JP13546880 A JP 13546880A JP 13546880 A JP13546880 A JP 13546880A JP S5760029 A JPS5760029 A JP S5760029A
Authority
JP
Japan
Prior art keywords
nozzles
strip
water
cooling
flow rate
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
JP13546880A
Other languages
Japanese (ja)
Other versions
JPS61889B2 (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 JP13546880A priority Critical patent/JPS5760029A/en
Publication of JPS5760029A publication Critical patent/JPS5760029A/en
Publication of JPS61889B2 publication Critical patent/JPS61889B2/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 control cooling rates to desired values together with target temps. by regulating the flow rate of refrigerant by control valves and the number of nozzles in accordance with the relations between parameters in injecting refrigerant from nozzles to materials to be cooled. CONSTITUTION:A hot strip 10 is cooled by the steam and water injection from nozzes 12, 14.... A flow rate transmitter 32, a flow rate control valve 34, and if necessary, a shutoff valve 36 are inserted to a water supply pipe 22. The same holds true of other nozzles. The quantity of water Qi of one piece of the nozzle is determined by the equationI(leo is the effective cooling length per piece of the nozzles, b is the length of the nozzle in the width direction of the strip 10, rho, Cp, h are the density, specific heat and thickness of the strip 10, CR is a cooling rate, K is a constant, G: the density of wind flow, Tw is a water temp., Tg is the temp. of the strip, alpha-delta are constants), and the number of nozzles N in the transfer direction injecting the quantity of water Qi is determined by the equation II (Ti, To are cooling start and end temps., v is the transfer speed of the strip 10).
JP13546880A 1980-09-29 1980-09-29 Method for controlling cooling Granted JPS5760029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13546880A JPS5760029A (en) 1980-09-29 1980-09-29 Method for controlling cooling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13546880A JPS5760029A (en) 1980-09-29 1980-09-29 Method for controlling cooling

Publications (2)

Publication Number Publication Date
JPS5760029A true JPS5760029A (en) 1982-04-10
JPS61889B2 JPS61889B2 (en) 1986-01-11

Family

ID=15152412

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13546880A Granted JPS5760029A (en) 1980-09-29 1980-09-29 Method for controlling cooling

Country Status (1)

Country Link
JP (1) JPS5760029A (en)

Cited By (1)

* 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

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
JPH057448B2 (en) * 1983-10-03 1993-01-28 Nippon Steel Corp

Also Published As

Publication number Publication date
JPS61889B2 (en) 1986-01-11

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