JPS5675527A - Temperature controlling method for multiple zone type heating furnace - Google Patents

Temperature controlling method for multiple zone type heating furnace

Info

Publication number
JPS5675527A
JPS5675527A JP15209679A JP15209679A JPS5675527A JP S5675527 A JPS5675527 A JP S5675527A JP 15209679 A JP15209679 A JP 15209679A JP 15209679 A JP15209679 A JP 15209679A JP S5675527 A JPS5675527 A JP S5675527A
Authority
JP
Japan
Prior art keywords
slab
weight coefficient
temperature
charging
hearth
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
JP15209679A
Other languages
Japanese (ja)
Other versions
JPS5825730B2 (en
Inventor
Sunao Tanimoto
Kozo Nakai
Nobuyuki Togashi
Shinya Tanifuji
Yasuo Morooka
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.)
Hitachi Ltd
JFE Engineering Corp
Original Assignee
Hitachi Ltd
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 Hitachi Ltd, NKK Corp, Nippon Kokan Ltd filed Critical Hitachi Ltd
Priority to JP54152096A priority Critical patent/JPS5825730B2/en
Publication of JPS5675527A publication Critical patent/JPS5675527A/en
Publication of JPS5825730B2 publication Critical patent/JPS5825730B2/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
    • C21D11/00—Process control or regulation for heat treatments

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)
  • Combustion Of Fluid Fuel (AREA)

Abstract

PURPOSE:To set and control temperature of each zone by multiplying the deviation of slab temperature corresponding to the position of the slab on the hearth and the temperature raising pattern corresponding to a predetermined position on the hearth by a weight coefficient. CONSTITUTION:In a heating furnace 40, a slab is moved forward by a walking beam 12 pitch by pitch. A signal of completion of one pitch is sent to a tracking processing device 46 through a PI/O device 45 together with signals from a charging device 43 and an extracting device 44, a charging completion signal and an extraction completion signal. An optimum furnace temperature determining device 48 catches the slab condition exactly when it works at a period of a fixed time and can renew the optimum furnace temperature. A weight coefficient changing device 47 changes a weight coefficient table 49 according to signal from a slab charging map 50 and a hearth map 51. The tracking unit 46 actuates the weight coefficient correcting device 47 at every charging. By changing the weight coefficient table dynamically, the optimum furnace temperature determining device 48 is made possible to control the heating furnace satisfactorily even when the temperature of charged material is changed abruptly compared with the initial value of the previously charged material.
JP54152096A 1979-11-26 1979-11-26 Temperature control method for multi-zone heating furnace Expired JPS5825730B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54152096A JPS5825730B2 (en) 1979-11-26 1979-11-26 Temperature control method for multi-zone heating furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54152096A JPS5825730B2 (en) 1979-11-26 1979-11-26 Temperature control method for multi-zone heating furnace

Publications (2)

Publication Number Publication Date
JPS5675527A true JPS5675527A (en) 1981-06-22
JPS5825730B2 JPS5825730B2 (en) 1983-05-30

Family

ID=15532953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54152096A Expired JPS5825730B2 (en) 1979-11-26 1979-11-26 Temperature control method for multi-zone heating furnace

Country Status (1)

Country Link
JP (1) JPS5825730B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58110622A (en) * 1981-12-23 1983-07-01 Hitachi Metals Ltd Continuous heater with automatic temperature setter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6297037U (en) * 1985-12-10 1987-06-20

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117818A (en) * 1976-03-31 1977-10-03 Sumitomo Metal Ind Ltd Control of continuous heating furnace

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117818A (en) * 1976-03-31 1977-10-03 Sumitomo Metal Ind Ltd Control of continuous heating furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58110622A (en) * 1981-12-23 1983-07-01 Hitachi Metals Ltd Continuous heater with automatic temperature setter

Also Published As

Publication number Publication date
JPS5825730B2 (en) 1983-05-30

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