JPS5613430A - Annealing method of steel - Google Patents
Annealing method of steelInfo
- 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
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.
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)
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)
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 |
-
1979
- 1979-07-14 JP JP8871179A patent/JPS5613430A/en active Granted
Cited By (10)
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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