JPS57137424A - Control method for continuous heating furnace - Google Patents

Control method for continuous heating furnace

Info

Publication number
JPS57137424A
JPS57137424A JP2453381A JP2453381A JPS57137424A JP S57137424 A JPS57137424 A JP S57137424A JP 2453381 A JP2453381 A JP 2453381A JP 2453381 A JP2453381 A JP 2453381A JP S57137424 A JPS57137424 A JP S57137424A
Authority
JP
Japan
Prior art keywords
furnace
determined
area
value
heating furnace
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.)
Pending
Application number
JP2453381A
Other languages
Japanese (ja)
Inventor
Shuichi Kishida
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 Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP2453381A priority Critical patent/JPS57137424A/en
Publication of JPS57137424A publication Critical patent/JPS57137424A/en
Pending 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
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets

Abstract

PURPOSE:To permit the operations satisfying optimum heating conditions by making the non-steadiness possessed by a continuous heating furnace quantitative, determining optimum set values, detecting the fluctuations in the non-steadiness time time-serially and giving the set timings thereof. CONSTITUTION:In a continuous heating furnace 10 where steel materials 12 are conveyed in a direction A, for example, preheating zones 14, 16 are put out of firing, and an upper heating zone 18 is made a control object. In order to set the furnace temp. thereof or the charge rate of fuel to the optimum value, an area L where the degree of the effect thereof is highest is determined, and the load value of the steel materials is determined from the extraction pitches of the heating furnace, the sizes of the steel materials, etc. including the actual records till present of the steel material group 12A therein and the forecasts for the future. Next, from the in-furnace residence hysteresis up to the inlet of the area L, the heat hysteresis value there is determined, and further from the in-furnace residence forecast after the outlet of the area L and the target extraction temp., the outlet side target value of said area is determined. The furnace temp. and the charge rate of fuel are determined as the functions for these three factor values and >=1 factors are monitored. When the change quantity thereof exceeds the set value, a set command is given.
JP2453381A 1981-02-20 1981-02-20 Control method for continuous heating furnace Pending JPS57137424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2453381A JPS57137424A (en) 1981-02-20 1981-02-20 Control method for continuous heating furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2453381A JPS57137424A (en) 1981-02-20 1981-02-20 Control method for continuous heating furnace

Publications (1)

Publication Number Publication Date
JPS57137424A true JPS57137424A (en) 1982-08-25

Family

ID=12140786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2453381A Pending JPS57137424A (en) 1981-02-20 1981-02-20 Control method for continuous heating furnace

Country Status (1)

Country Link
JP (1) JPS57137424A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04120773U (en) * 1991-04-15 1992-10-28 容徳 新井 golf batting practice equipment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827907A (en) * 1971-08-14 1973-04-13
JPS4929403A (en) * 1972-07-17 1974-03-15
JPS569331A (en) * 1979-06-29 1981-01-30 Kobe Steel Ltd Setting of correction for temperature of multizone type continuous heating furnace

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827907A (en) * 1971-08-14 1973-04-13
JPS4929403A (en) * 1972-07-17 1974-03-15
JPS569331A (en) * 1979-06-29 1981-01-30 Kobe Steel Ltd Setting of correction for temperature of multizone type continuous heating furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04120773U (en) * 1991-04-15 1992-10-28 容徳 新井 golf batting practice equipment

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