JPS55100919A - Control of crown in hearth roll at continuous annealing furnace - Google Patents

Control of crown in hearth roll at continuous annealing furnace

Info

Publication number
JPS55100919A
JPS55100919A JP479579A JP479579A JPS55100919A JP S55100919 A JPS55100919 A JP S55100919A JP 479579 A JP479579 A JP 479579A JP 479579 A JP479579 A JP 479579A JP S55100919 A JPS55100919 A JP S55100919A
Authority
JP
Japan
Prior art keywords
crown
flow rate
steel plate
temperature
coolant
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
JP479579A
Other languages
Japanese (ja)
Other versions
JPS5843454B2 (en
Inventor
Satoyuki Kitajima
Nobuo Tsuzuki
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 JP479579A priority Critical patent/JPS5843454B2/en
Publication of JPS55100919A publication Critical patent/JPS55100919A/en
Publication of JPS5843454B2 publication Critical patent/JPS5843454B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Control Of Heat Treatment Processes (AREA)

Abstract

PURPOSE: To stabilize continuous annealing operation by a method wherein crown of hearth roll in furnace is adjusted to a proper amount of crown according to the size of steel plate supplied to a continuous annealing furnace, and the crown is controlled in such a manner that the drawing and the staggering of the steel plate are corrected.
CONSTITUTION: The flow rate and the temperature of a coolant are preset by a setting device 9, before steel plate 2 is supplied to an annealing furnace, said flow rate and said temperature being previously set basing upon the thickness and the width of the steel plate. The coolant is sprayed through a nozzle header 10 on a hearth roll to keep a proper amount of crown. When the drawing and the meandering of the steel plate 2 are occurred during operation, the amount of the meandering is detected by a detector 3. A signal is treated by a signal treating circuit 4 and transmitted to an arithmetical circuit 5, where the transmitted amount of the meandering is compared with a value previously set and the flow rate and the temperature of the coolant required to restore the proper amount of the crown are operated arithmetically. Control devices 6, 7 for the flow rate and the temperature are operated by the signal obtained. The coolant having a proper flow rate and temperature is supplied to correct the crown to the proper amount thereof.
COPYRIGHT: (C)1980,JPO&Japio
JP479579A 1979-01-22 1979-01-22 Crown control method in hearth roll of continuous annealing furnace Expired JPS5843454B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP479579A JPS5843454B2 (en) 1979-01-22 1979-01-22 Crown control method in hearth roll of continuous annealing furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP479579A JPS5843454B2 (en) 1979-01-22 1979-01-22 Crown control method in hearth roll of continuous annealing furnace

Publications (2)

Publication Number Publication Date
JPS55100919A true JPS55100919A (en) 1980-08-01
JPS5843454B2 JPS5843454B2 (en) 1983-09-27

Family

ID=11593702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP479579A Expired JPS5843454B2 (en) 1979-01-22 1979-01-22 Crown control method in hearth roll of continuous annealing furnace

Country Status (1)

Country Link
JP (1) JPS5843454B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04202716A (en) * 1990-11-30 1992-07-23 Kobe Steel Ltd Device for controlling crown of hearth roll in continuous heat treatment furnace
JPH04202717A (en) * 1990-11-30 1992-07-23 Kobe Steel Ltd Device for controlling crown of hearth roll in continuous heat treatment furnace
US6238209B1 (en) 2000-05-17 2001-05-29 Kawasaki Steel Corporation Hearth rolls for heating furnace and soaking furnace of vertical heat treating furnace and vertical heat treating furnace including hearth rolls
JP2016147739A (en) * 2015-02-12 2016-08-18 日本碍子株式会社 Transfer roller, heat treatment device, and infrared treatment device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04202716A (en) * 1990-11-30 1992-07-23 Kobe Steel Ltd Device for controlling crown of hearth roll in continuous heat treatment furnace
JPH04202717A (en) * 1990-11-30 1992-07-23 Kobe Steel Ltd Device for controlling crown of hearth roll in continuous heat treatment furnace
US6238209B1 (en) 2000-05-17 2001-05-29 Kawasaki Steel Corporation Hearth rolls for heating furnace and soaking furnace of vertical heat treating furnace and vertical heat treating furnace including hearth rolls
JP2016147739A (en) * 2015-02-12 2016-08-18 日本碍子株式会社 Transfer roller, heat treatment device, and infrared treatment device

Also Published As

Publication number Publication date
JPS5843454B2 (en) 1983-09-27

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