JPS56105430A - Control of furnace temperature of multizone type continuous heating furnace - Google Patents

Control of furnace temperature of multizone type continuous heating furnace

Info

Publication number
JPS56105430A
JPS56105430A JP921180A JP921180A JPS56105430A JP S56105430 A JPS56105430 A JP S56105430A JP 921180 A JP921180 A JP 921180A JP 921180 A JP921180 A JP 921180A JP S56105430 A JPS56105430 A JP S56105430A
Authority
JP
Japan
Prior art keywords
billet
temp
furnace
estimated
zone
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
JP921180A
Other languages
Japanese (ja)
Other versions
JPS6411686B2 (en
Inventor
Ichiro Kokubo
Yoji Kawatani
Ryuichi Ishida
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP921180A priority Critical patent/JPS56105430A/en
Publication of JPS56105430A publication Critical patent/JPS56105430A/en
Publication of JPS6411686B2 publication Critical patent/JPS6411686B2/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
    • C21D11/00—Process control or regulation for heat treatments

Abstract

PURPOSE:To permit to control the furnace temp. by a method wherein an evaluation function is calculated about every each billet by using an estimated and target temperature in a predetermined position and various weight factors of each billet to decide the furnace temp. of each zone as a function of the evaluation function. CONSTITUTION:A present temp. of each billet in the multizone type continuous heating furnace is determined in consider of various factors. Further, from a dimention and a scheduled extraction pitch of each billet positioned at an extraction side from a target billet, a stay time in each zone when each billet is transferred over a definite distance corresponding to >1/3 and <2/3 of a length of each zone and reaches a position Pi is estimated. Then, from the present temp. of each billet, an estimated stary time, the dimension of the billet, a heat property value, heat conductive property of the furnace and a present temp. of each zone, a temp. theta i<p> of the billet when it reaches the position is estimated. The estimation function J is calculated by formula I by using said estimated temp. theta i<p>, the objective temp. theta i and the weight factor omega i and the furnace temp. in the l-th zone is decided as a function of the function J to carry out the control. By this control, the saving of the fuel consumption and the improvement of product qualities are attained.
JP921180A 1980-01-28 1980-01-28 Control of furnace temperature of multizone type continuous heating furnace Granted JPS56105430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP921180A JPS56105430A (en) 1980-01-28 1980-01-28 Control of furnace temperature of multizone type continuous heating furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP921180A JPS56105430A (en) 1980-01-28 1980-01-28 Control of furnace temperature of multizone type continuous heating furnace

Publications (2)

Publication Number Publication Date
JPS56105430A true JPS56105430A (en) 1981-08-21
JPS6411686B2 JPS6411686B2 (en) 1989-02-27

Family

ID=11714122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP921180A Granted JPS56105430A (en) 1980-01-28 1980-01-28 Control of furnace temperature of multizone type continuous heating furnace

Country Status (1)

Country Link
JP (1) JPS56105430A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110056263A1 (en) * 2008-03-25 2011-03-10 Sumitomo Metal Industries, Ltd. Method for Producing Seamless Pipe and Method for Determining Length of Billet for Use in Producing Seamless Pipe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03114971U (en) * 1990-03-09 1991-11-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110056263A1 (en) * 2008-03-25 2011-03-10 Sumitomo Metal Industries, Ltd. Method for Producing Seamless Pipe and Method for Determining Length of Billet for Use in Producing Seamless Pipe
US8770003B2 (en) * 2008-03-25 2014-07-08 Sumitomo Metal Industries, Ltd. Method for producing seamless pipe and method for determining length of billet for use in producing seamless pipe

Also Published As

Publication number Publication date
JPS6411686B2 (en) 1989-02-27

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