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JPS5613430A - Annealing method of steel - Google Patents

Annealing method of steel

Info

Publication number
JPS5613430A
JPS5613430A JP8871179A JP8871179A JPS5613430A JP S5613430 A JPS5613430 A JP S5613430A JP 8871179 A JP8871179 A JP 8871179A JP 8871179 A JP8871179 A JP 8871179A JP S5613430 A JPS5613430 A JP S5613430A
Authority
JP
Japan
Prior art keywords
hoop
annealing
oxygen
sensor
electromotive force
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
JP8871179A
Other languages
Japanese (ja)
Other versions
JPS6353247B2 (en
Inventor
Yoshio Nakajima
Naonori Moriya
Ichiu Takagi
Toshinori Miki
Sunao Saeki
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 Nisshin Co Ltd
Original Assignee
Nisshin Steel Co 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 Nisshin Steel Co Ltd filed Critical Nisshin Steel Co Ltd
Priority to JP8871179A priority Critical patent/JPS5613430A/en
Publication of JPS5613430A publication Critical patent/JPS5613430A/en
Publication of JPS6353247B2 publication Critical patent/JPS6353247B2/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere

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)
  • Measuring Oxygen Concentration In Cells (AREA)

Abstract

PURPOSE:To perform decarbonization and annealing at the optima, by controlling the dew point and the oxidizing or reducing properties etc. of the atmosphere gas by measuring the oxygen partial pressure of the atmosphere gas in a furnace by oxygen sensors. CONSTITUTION:An annealing furnace is equipped with an oxygen sensor for detecting oxygen partial pressure and an oxygen sensor having reference electrode (a mixture of Fe and FeO) of a prescribed concn. For example, in the inner cover of an annealing furnace is placed a cold rolled hoop, and are set an upper oxygen sensor 3 for setting annealing conditions and a lower oxygen sensor 4 for controlling, both sensors being connected to volt meters respectively, reference electrodes dides to the minus sides of the voltmeters and gas sides to the plus sides. When the hoop 2 and the atmosphere gas contg. steam are heated to 500 deg.C, electromotove force is measured. The upper sensor 3 is set at -10mV electromotive force and is kept at the electromotive force during annealing. When the lower sensor 4 attains -5.4mV electromotive force, dry soaking operation is started immediately and the hoop is cooled. Hereby the hoop contg. 0.0021% carbon is obtained.
JP8871179A 1979-07-14 1979-07-14 Annealing method of steel Granted JPS5613430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8871179A JPS5613430A (en) 1979-07-14 1979-07-14 Annealing method of steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8871179A JPS5613430A (en) 1979-07-14 1979-07-14 Annealing method of steel

Publications (2)

Publication Number Publication Date
JPS5613430A true JPS5613430A (en) 1981-02-09
JPS6353247B2 JPS6353247B2 (en) 1988-10-21

Family

ID=13950471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8871179A Granted JPS5613430A (en) 1979-07-14 1979-07-14 Annealing method of steel

Country Status (1)

Country Link
JP (1) JPS5613430A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5096110A (en) * 1990-12-17 1992-03-17 Ford Motor Company Control system for vacuum brazing process
US5261976A (en) * 1991-12-31 1993-11-16 Gas Research Institute Control system for a soft vacuum furnace
JPH05306072A (en) * 1992-05-01 1993-11-19 Kureha Chem Ind Co Ltd Long article winding/storing device
US5772428A (en) * 1996-02-09 1998-06-30 Praxair Technology, Inc. Method and apparatus for heat treatment including H2 /H2 O furnace region control
EP0890832A1 (en) * 1997-07-07 1999-01-13 European Atomic Energy Community (EURATOM) Method and device for producing a controlled atmosphere with low oxygen partial pressure
EP1178122A3 (en) * 2000-07-07 2002-02-27 Rainer Gorris Procedure for determining the oxidation potential of gaseous atmospheres with respect to metal/metaloxides
US20150013847A1 (en) * 2012-03-09 2015-01-15 Baoshan Iron & Steel Co., Ltd. Method for Producing Silicon Steel Normalizing Substrate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103952527A (en) * 2014-05-14 2014-07-30 江苏舒茨测控设备有限公司 System for detecting gases in continuous annealing furnace

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5096110A (en) * 1990-12-17 1992-03-17 Ford Motor Company Control system for vacuum brazing process
US5261976A (en) * 1991-12-31 1993-11-16 Gas Research Institute Control system for a soft vacuum furnace
US5385337A (en) * 1991-12-31 1995-01-31 Gas Research Institute Control system for a soft vacuum furnace
JPH05306072A (en) * 1992-05-01 1993-11-19 Kureha Chem Ind Co Ltd Long article winding/storing device
US5772428A (en) * 1996-02-09 1998-06-30 Praxair Technology, Inc. Method and apparatus for heat treatment including H2 /H2 O furnace region control
EP0890832A1 (en) * 1997-07-07 1999-01-13 European Atomic Energy Community (EURATOM) Method and device for producing a controlled atmosphere with low oxygen partial pressure
WO1999002978A1 (en) * 1997-07-07 1999-01-21 European Atomic Energy Community (Euratom) Method and device for producing a controlled atmosphere with low oxygen partial pressure
EP1178122A3 (en) * 2000-07-07 2002-02-27 Rainer Gorris Procedure for determining the oxidation potential of gaseous atmospheres with respect to metal/metaloxides
US20150013847A1 (en) * 2012-03-09 2015-01-15 Baoshan Iron & Steel Co., Ltd. Method for Producing Silicon Steel Normalizing Substrate
US9822423B2 (en) * 2012-03-09 2017-11-21 Baoshan Iron & Steel, Co., Ltd. Method for producing silicon steel normalizing substrate

Also Published As

Publication number Publication date
JPS6353247B2 (en) 1988-10-21

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