JPS5763641A - Controller for pressure in gas-water cooling furnace in continuous annealing furnace - Google Patents

Controller for pressure in gas-water cooling furnace in continuous annealing furnace

Info

Publication number
JPS5763641A
JPS5763641A JP13766880A JP13766880A JPS5763641A JP S5763641 A JPS5763641 A JP S5763641A JP 13766880 A JP13766880 A JP 13766880A JP 13766880 A JP13766880 A JP 13766880A JP S5763641 A JPS5763641 A JP S5763641A
Authority
JP
Japan
Prior art keywords
furnace
gas
water cooling
atmosphere
continuous annealing
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
JP13766880A
Other languages
Japanese (ja)
Other versions
JPS618133B2 (en
Inventor
Tadatoshi Seki
Norimoto Nagira
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 JP13766880A priority Critical patent/JPS5763641A/en
Publication of JPS5763641A publication Critical patent/JPS5763641A/en
Publication of JPS618133B2 publication Critical patent/JPS618133B2/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
    • C21D9/573—Continuous furnaces for strip or wire with cooling

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 prevent the reducing atmospheres in adjacent furnace from being affected by the oxidative atmosphere in a gas-water cooling furnace by keeping the internal pressure of the gas-water cooling furnace lower than the internal pressures of the adjacent furnaces in a continuous annealing furnace consisting of a heating furnace, a soaking furnace, the gas-water cooling furnace and an overaging furnace. CONSTITUTION:In a continuous annealing furnace provided continuously with a heating furnace 11, a soaking furnace 12, a gas-water cooling furnace 13 and an overaging furnace 14, an operator 20 which is inputted with cooling rates, line speeds, the temps., thicknesses and widths of the steel strips to be annealed, and outputs to gaseous atmosphere supply systems 15, 16 and a gaseous atmosphere discharge system 17 is provided. In operation of the annealing furnace, the gaseous atmosphere supply systems 15-1, 15-2 and the in-furnace gas discharge system 17-1 of the furnace 13 are automatically controlled in such a way that the internal pressure of the oxidative atmosphere in the furnace 13 is kept lower than the internal pressures of the furnace 12 and the furnace 14 before and behind the same. The intrusion of the oxidative gas of the atmosphere of the gas-water cooling furnace into the reducing atmospheres of the furnace 12 and the furnace 14 and the giving of adverse influence upon these are obviated.
JP13766880A 1980-10-03 1980-10-03 Controller for pressure in gas-water cooling furnace in continuous annealing furnace Granted JPS5763641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13766880A JPS5763641A (en) 1980-10-03 1980-10-03 Controller for pressure in gas-water cooling furnace in continuous annealing furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13766880A JPS5763641A (en) 1980-10-03 1980-10-03 Controller for pressure in gas-water cooling furnace in continuous annealing furnace

Publications (2)

Publication Number Publication Date
JPS5763641A true JPS5763641A (en) 1982-04-17
JPS618133B2 JPS618133B2 (en) 1986-03-12

Family

ID=15204015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13766880A Granted JPS5763641A (en) 1980-10-03 1980-10-03 Controller for pressure in gas-water cooling furnace in continuous annealing furnace

Country Status (1)

Country Link
JP (1) JPS5763641A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100530329B1 (en) * 2001-11-29 2005-11-22 주식회사 포스코 Control system for obtaining stable inner gas pressure of annealing furnace
JP2008031546A (en) * 2006-08-01 2008-02-14 Nippon Steel Corp Method for manufacturing thin steel sheet having superior surface appearance for container, and facility therefor
CN103376739A (en) * 2012-04-23 2013-10-30 宝山钢铁股份有限公司 Control device of continuous annealing furnace pressure alarming and method thereof
CN104046768A (en) * 2014-06-09 2014-09-17 首钢总公司 System and method for controlling furnace pressure of continuous annealing furnace
JP2017504716A (en) * 2013-12-25 2017-02-09 ポスコＰｏｓｃｏ Strip continuous annealing apparatus and continuous annealing method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100530329B1 (en) * 2001-11-29 2005-11-22 주식회사 포스코 Control system for obtaining stable inner gas pressure of annealing furnace
JP2008031546A (en) * 2006-08-01 2008-02-14 Nippon Steel Corp Method for manufacturing thin steel sheet having superior surface appearance for container, and facility therefor
CN103376739A (en) * 2012-04-23 2013-10-30 宝山钢铁股份有限公司 Control device of continuous annealing furnace pressure alarming and method thereof
JP2017504716A (en) * 2013-12-25 2017-02-09 ポスコＰｏｓｃｏ Strip continuous annealing apparatus and continuous annealing method thereof
US10358691B2 (en) 2013-12-25 2019-07-23 Posco Apparatus for continuous annealing of strip and method for continuous annealing of same
US10604820B2 (en) 2013-12-25 2020-03-31 Posco Method of continuously annealing a strip
CN104046768A (en) * 2014-06-09 2014-09-17 首钢总公司 System and method for controlling furnace pressure of continuous annealing furnace

Also Published As

Publication number Publication date
JPS618133B2 (en) 1986-03-12

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