JPS57174417A - Operating method of continuous heating furnace - Google Patents

Operating method of continuous heating furnace

Info

Publication number
JPS57174417A
JPS57174417A JP6005181A JP6005181A JPS57174417A JP S57174417 A JPS57174417 A JP S57174417A JP 6005181 A JP6005181 A JP 6005181A JP 6005181 A JP6005181 A JP 6005181A JP S57174417 A JPS57174417 A JP S57174417A
Authority
JP
Japan
Prior art keywords
zone
internal pressure
furnace internal
furnace
flow rate
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
JP6005181A
Other languages
Japanese (ja)
Other versions
JPS629164B2 (en
Inventor
Koji Iwata
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP6005181A priority Critical patent/JPS57174417A/en
Publication of JPS57174417A publication Critical patent/JPS57174417A/en
Publication of JPS629164B2 publication Critical patent/JPS629164B2/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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire

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)
  • Coating With Molten Metal (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE:To elevate thermal efficiency of a furnace and a quality of a steel plate, by blowing a part of atmospheric gas of a soaking zone to a preheating zone through a bypass duct, and also keeping furnace internal pressure of the soaking zone higher than furnace internal pressure of the heating zone. CONSTITUTION:A flow rate is contdolled by driving a driving device 15 of a flow rate control valve 9 through a furnace pressure setting device 13 in accordance with a difference of pressure between a furnace internal pressure sensor 14 of a soaking zone 3 and a furnace internal pressure sensor 14' of a heating zone 2. That is to say, the setting device 13 is set so that furnace internal pressure of the soaking zone 3 becomes higher than furnace internal pressure of the heating zone 2 by a constant value or above, and when it becomes the constant value or below, the opening of the valve 9 is closed by operating the device 15, and a flow rate flowing to a bypass duct 7 is reduced. On the contrary, when said furnace internal pressure becomes higher than the constant value, the flow rate of the duct 7 is increased so that a difference of the pressure enters into a prescribed reange. Also, the furnace internal pressure of the zone 3 is made higher than that of the zone 2 so that gas of the zone 2, containing oxygen does not go into the zone 3, and the oxidation of a steel plate 4 is prevented.
JP6005181A 1981-04-20 1981-04-20 Operating method of continuous heating furnace Granted JPS57174417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6005181A JPS57174417A (en) 1981-04-20 1981-04-20 Operating method of continuous heating furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6005181A JPS57174417A (en) 1981-04-20 1981-04-20 Operating method of continuous heating furnace

Publications (2)

Publication Number Publication Date
JPS57174417A true JPS57174417A (en) 1982-10-27
JPS629164B2 JPS629164B2 (en) 1987-02-26

Family

ID=13130891

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6005181A Granted JPS57174417A (en) 1981-04-20 1981-04-20 Operating method of continuous heating furnace

Country Status (1)

Country Link
JP (1) JPS57174417A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009149992A (en) * 2009-01-30 2009-07-09 Jfe Steel Corp Alloying furnace for hot dip galvanizing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009149992A (en) * 2009-01-30 2009-07-09 Jfe Steel Corp Alloying furnace for hot dip galvanizing

Also Published As

Publication number Publication date
JPS629164B2 (en) 1987-02-26

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