JPS5616627A - Controlling method for temperature of metal strip in slow cooling zone of continuous annealing furnace - Google Patents

Controlling method for temperature of metal strip in slow cooling zone of continuous annealing furnace

Info

Publication number
JPS5616627A
JPS5616627A JP9055979A JP9055979A JPS5616627A JP S5616627 A JPS5616627 A JP S5616627A JP 9055979 A JP9055979 A JP 9055979A JP 9055979 A JP9055979 A JP 9055979A JP S5616627 A JPS5616627 A JP S5616627A
Authority
JP
Japan
Prior art keywords
air
cooling zone
slow cooling
strip
formula
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
JP9055979A
Other languages
Japanese (ja)
Other versions
JPS6221850B2 (en
Inventor
Kazuo Maehara
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 JP9055979A priority Critical patent/JPS5616627A/en
Publication of JPS5616627A publication Critical patent/JPS5616627A/en
Publication of JPS6221850B2 publication Critical patent/JPS6221850B2/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

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 make possible the optimum temp. control of metal strip in the slow cooling zone of a continuous annealing furnace, by setting the number of revolutions of a blower in accordance with the estimated value of heat quantity which the metal strip loses while passing the slow cooling zone of the continuous annealing furnace, and by correcting the number of revolution in accordance with other measured values. CONSTITUTION:The heat quantity taken away from metal strip with air while the strip passing a slow cooling zone is estimated by using a formula for calculating heat quantity, the formula which includes the thickness, breadth, transferring speed of the strip, and the temps. of the strip at the inlet side and the outlet side of the slow cooling zone. The flow rate of air in a pipe required for making the strip attain desired temp. at the outlet side of the slow cooling zone is calculated by using a formula for calculating the flow rate of air in the pipe, the formula which includes said estimated heat quantity and the temp. of air at the inlet side of cooling pipe. The number of revolutions of a blower is set by using said required quantity of air, and is corrected on the basis of the values obtained by measuring transferring speed, temp. of the strip during operation, and air temp. Said formula for calculating air flow rate in the cooling pipe is corrected dynamically on the basis of these measured values.
JP9055979A 1979-07-17 1979-07-17 Controlling method for temperature of metal strip in slow cooling zone of continuous annealing furnace Granted JPS5616627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9055979A JPS5616627A (en) 1979-07-17 1979-07-17 Controlling method for temperature of metal strip in slow cooling zone of continuous annealing furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9055979A JPS5616627A (en) 1979-07-17 1979-07-17 Controlling method for temperature of metal strip in slow cooling zone of continuous annealing furnace

Publications (2)

Publication Number Publication Date
JPS5616627A true JPS5616627A (en) 1981-02-17
JPS6221850B2 JPS6221850B2 (en) 1987-05-14

Family

ID=14001764

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9055979A Granted JPS5616627A (en) 1979-07-17 1979-07-17 Controlling method for temperature of metal strip in slow cooling zone of continuous annealing furnace

Country Status (1)

Country Link
JP (1) JPS5616627A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59123315A (en) * 1982-12-28 1984-07-17 Toshiba Corp Digital-analog converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59123315A (en) * 1982-12-28 1984-07-17 Toshiba Corp Digital-analog converter

Also Published As

Publication number Publication date
JPS6221850B2 (en) 1987-05-14

Similar Documents

Publication Publication Date Title
JPS5616627A (en) Controlling method for temperature of metal strip in slow cooling zone of continuous annealing furnace
JPS56151155A (en) Control method for surface temperature of continuously cast ingot
JPS5638430A (en) Combustion control for walking beam type heating furnace
JPS61261433A (en) Method for controlling temperature of heating furnace
JPS5726128A (en) Method for controlling cooling rate and cooling end point temperature of steel strip
JPS55122829A (en) Metal strip temperature controlling method in direct firing type gas combustion system continuously annealing furnace
JPH08246058A (en) Automatic combustion control method in continuous type heating furnace
JPS5443809A (en) Controlling method for temperature of metal strip in continuous furnace
JPS56139630A (en) Sheet temperature control method in continuous heating furnace
JPS56136215A (en) Method and apparatus for feedback control of water cooling for steel material in rolling line
JPH0127129B2 (en)
JPS55132663A (en) Baking method of coated pipe
JPS54112709A (en) Temperature setting and controlling method for multi- zone type heating furnace
JPS57158329A (en) Working method
JPS5760025A (en) Method for controlling plate temperature
JPS5735640A (en) Method for controlling plate temperature of continuous annealing furnace
JPS56136212A (en) Computing method for temperature in controlling water cooling of rolled steel sheet
JPS52117215A (en) Control of continuous heat treating furnace
SU428027A1 (en) DEVICE FOR AUTOMATIC CONTROL OF THE HEAT MODE OF THE HEATING WELL
JPS5565329A (en) Temperature controlling method for firing furnace of sintering machine
JPS5677342A (en) Method of controlling strip temperature of continuous annealing equipment
SU660951A1 (en) Method of automatic regulation of clinker roasting in rotary furnaces
SU581365A1 (en) Method of controlling roasting process in rotary clinker roasting furnace with bar cooler
JPS63128106A (en) Control method for cooling water for iron shell in blast furnace
JPS5782425A (en) Method for control of combustion of heating furnace