WO2010134214A1 - Continuous annealing furnace - Google Patents

Continuous annealing furnace Download PDF

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Publication number
WO2010134214A1
WO2010134214A1 PCT/JP2009/060753 JP2009060753W WO2010134214A1 WO 2010134214 A1 WO2010134214 A1 WO 2010134214A1 JP 2009060753 W JP2009060753 W JP 2009060753W WO 2010134214 A1 WO2010134214 A1 WO 2010134214A1
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WO
WIPO (PCT)
Prior art keywords
annealing furnace
continuous annealing
atmospheric gas
combustion
gas
Prior art date
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PCT/JP2009/060753
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French (fr)
Japanese (ja)
Inventor
中川博夫
荒木勇治
赤阪素史
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中外炉工業株式会社
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Publication date
Application filed by 中外炉工業株式会社 filed Critical 中外炉工業株式会社
Priority to EP10777670.0A priority Critical patent/EP2434026B1/en
Priority to ES10777670T priority patent/ES2747953T3/en
Priority to JP2011514379A priority patent/JP4979836B2/en
Priority to CN2010800031669A priority patent/CN102203305B/en
Priority to PCT/JP2010/057851 priority patent/WO2010134436A1/en
Publication of WO2010134214A1 publication Critical patent/WO2010134214A1/en

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    • 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
    • C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
    • 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
    • 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
    • C21D9/562—Details
    • 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
    • C21D9/562—Details
    • C21D9/565—Sealing arrangements
    • 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
    • C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
    • 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
    • C21D9/5735—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases

Definitions

  • the treatment material introduced through the inlet seal portion is continuously conveyed from the heating zone to the cooling zone in the atmosphere gas containing hydrogen gas, and after the treatment material is indirectly heated in the heating zone, as described above.
  • the present invention relates to a continuous annealing furnace in which a heated treatment material is cooled and cooled in a cooling zone and the annealed treatment material is led out through an outlet seal portion.
  • the atmospheric gas is used in order to replenish the atmospheric gas leaked from the inlet seal portion and the outlet seal portion and to react the oxygen introduced into the continuous annealing furnace together with the treatment material with hydrogen gas.
  • the excessive atmospheric gas supplied into the continuous annealing furnace is prevented from being discharged to the outside, and an excessive atmosphere is provided. It is characterized in that hydrogen gas contained in the gas is effectively used.
  • the long treatment material 1 is treated with an atmosphere gas containing hydrogen gas, generally hydrogen gas. It introduce
  • an atmosphere gas containing hydrogen gas generally hydrogen gas. It introduce
  • the treated material 1 is led to the cooling zones 13a to 13c to be cooled, and further, the treated material 1 is guided from the top roll chamber 14 provided with the roller 14a to the outlet seal portion 16 through the chute 15 and through the outlet seal portion 16 Deriving from the continuous annealing furnace 10 is performed (see, for example, Patent Documents 1 and 2).
  • the atmosphere gas leaked from the inlet seal portion 11 and the outlet seal portion 16 is replenished and introduced into the continuous annealing furnace 10 together with the treatment material 1.
  • an atmospheric gas containing hydrogen gas is supplied from the atmospheric gas supply device 20 into the continuous annealing furnace 10.
  • oxygen introduced into the continuous annealing furnace 10 together with the treatment material 1 is used as the atmospheric gas.
  • the atmosphere gas is supplied excessively from the atmosphere gas supply device 20 into the continuous annealing furnace 10 in order to react with the hydrogen gas contained in the atmosphere.
  • the pressure of the atmospheric gas in the continuous annealing furnace 10 gradually increases. It is necessary to discharge the atmospheric gas to the outside.
  • a highly airtight roll seal or the like has been used for the inlet seal portion 11 or the outlet seal portion 16 described above, and the amount of atmospheric gas that leaks from the inlet seal portion 11 or the outlet seal portion 16 is reduced. The amount of atmospheric gas discharged from the continuous annealing furnace 10 tends to increase.
  • the treatment material introduced through the inlet seal portion is continuously conveyed from the heating zone to the cooling zone in the atmosphere gas containing hydrogen gas, and after the treatment material is indirectly heated in the heating zone, as described above. It is an object to solve the above problems in a continuous annealing furnace in which the heated treatment material is cooled and cooled in a cooling zone, and the annealed treatment material is led out through the outlet seal portion. is there.
  • the atmosphere gas leaked from the inlet seal portion and the outlet seal portion is replenished as described above, and oxygen introduced into the continuous annealing furnace together with the treatment material is reacted with hydrogen gas.
  • oxygen introduced into the continuous annealing furnace together with the treatment material is reacted with hydrogen gas.
  • an inlet seal portion for introducing a long treatment material, a heating zone for indirectly heating the treatment material by combustion in the combustion portion, and a heated treatment material are provided.
  • a cooling zone for cooling and an outlet seal portion for leading out the cooled treatment material, and the treatment material introduced through the inlet seal portion is transferred from the heating zone to the cooling zone in an atmospheric gas containing hydrogen gas.
  • an atmospheric gas supply device that supplies the atmospheric gas into the continuous annealing furnace, and a continuous annealing furnace
  • an atmospheric gas control device for introducing excess atmospheric gas into the combustion section of the heating zone In a continuous annealing furnace that continuously conveys and anneals and anneals the treated material through the outlet seal portion, an atmospheric gas supply device that supplies the atmospheric gas into the continuous annealing furnace, and a continuous annealing furnace And an atmospheric gas control device for introducing excess atmospheric gas into the combustion section of the heating zone.
  • an outer tube is provided on the outer peripheral side of the inner tube through which the treatment material is passed, and combustion between the inner tube and the outer tube is performed.
  • a so-called muffle type can be used.
  • a combustion device such as a burner can be provided in the outer tube.
  • the hydrogen gas contained in the excess atmosphere gas in the continuous annealing furnace is effectively utilized for combustion in the combustion section of the heating zone, and the excess atmosphere gas Exhaust from the inside of the continuous annealing furnace is suppressed, and there is no need to cool the atmospheric gas or dilute the atmospheric gas with air, thereby reducing costs.
  • continuous annealing furnace according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings.
  • the continuous annealing furnace according to the present invention is not limited to the one shown in the following embodiment, and can be implemented with appropriate modifications within a range not changing the gist of the invention.
  • an elongated treatment material 1 such as a stainless steel strip obtained by cold rolling is applied to an atmosphere gas containing hydrogen gas through an inlet seal portion 11, generally hydrogen gas.
  • a continuous annealing furnace 10 filled with an atmospheric gas mainly composed of nitrogen gas.
  • the roll seal 11a is used in order to prevent the atmospheric gas filled in the continuous annealing furnace 10 from flowing out.
  • the treatment material 1 guided through the inlet seal portion 11 is indirectly heated in the heating zone 12 as described above.
  • the heating zone 12 has a double tube structure, and the treatment material 1 passes through the inner tube 12 a of the heating zone 12.
  • a combustion device 12c such as a burner is provided in the outer tube 12b, the combustion device 12c performs combustion in the combustion portion 12d between the inner tube 12a and the outer tube 12b, and passes through the inner tube 12a. 1 is indirectly heated.
  • the combustion exhaust gas combusted in the combustion section 12d is guided to the cooling device 12f through the exhaust gas pipe 12e. After the combustion exhaust gas is cooled by the cooling device 12f, the combustion exhaust gas is discharged into the exhaust gas.
  • the tube 12e is discharged outside.
  • the treatment material 1 heated in the heating zone 12 in this manner is sequentially guided to the first to third cooling zones 13a to 13c to be cooled, and the treatment material 1 thus cooled is provided with a roller 14a.
  • the processed material 1 is guided from the top roll chamber 14 through the chute 15 to the outlet seal portion 16, and the treated material 1 is led out from the continuous annealing furnace 10 through the outlet seal portion 16. I have to.
  • the roll seal 16a is used in order to prevent the atmospheric gas filled in the continuous annealing furnace 10 from flowing out.
  • the atmosphere gas leaked from the inlet seal portion 11 and the outlet seal portion 16 is replenished and introduced into the continuous annealing furnace 10 together with the treatment material 1.
  • the atmospheric gas containing hydrogen gas is excessively supplied into the continuous annealing furnace 10 from the atmospheric gas supply device 20.
  • said atmospheric gas is supplied to the 3rd cooling zone 13c.
  • the position for supplying the atmospheric gas is not particularly limited.
  • the excess atmospheric gas is supplied from the inside of the continuous annealing furnace 10 supplied with the excessive atmospheric gas by the atmospheric gas supply device 20 in this manner, and the combustion section 12d of the heating zone 12 is used.
  • Atmospheric gas control device 30 is provided.
  • a pressure gauge 31 for measuring the pressure of the atmospheric gas in the continuous annealing furnace 10 is provided, and the pressure of the atmospheric gas in the continuous annealing furnace 10 measured by the pressure gauge 31. Is output to the control means 32.
  • a first valve 33a and a second valve 33b are provided in the guide pipe 33 that guides excess atmospheric gas in the continuous annealing furnace 10 to the combustion section 12d of the heating zone 12,
  • a discharge pipe 34 for discharging atmospheric gas to the outside is connected to a portion of the guide pipe 33 between the first valve 33a and the second valve 33b, and a third valve 34a is provided in the discharge pipe 34 to control the above control.
  • the means 32 controls the first valve 33a, the second valve 33b, and the third valve 34a.
  • the pressure of the atmospheric gas in the continuous annealing furnace 10 measured by the pressure gauge 31 is set to a predetermined value. While the first valve 33 a and the second valve 33 b are opened by the control means 32, the third valve 34 a is closed, and excess atmosphere gas in the continuous annealing furnace 10 is passed through the guide tube 33 to the heating zone 12. To the combustion section 12d.
  • the hydrogen gas contained in the atmospheric gas thus led to the combustion section 12d is burned by the combustion device 12c and discharged to the outside together with the combustion exhaust gas through the exhaust gas pipe 12e.
  • the atmospheric gas containing hydrogen gas in the continuous annealing furnace 10 is prevented from being discharged to the outside as it is, and the hydrogen gas contained in the discharged atmospheric gas is in the combustion section 12d of the heating zone 12. Effectively used for combustion.
  • control means 32 opens the first valve 33a and the third valve 34a, while the second valve It is also possible to close 33b and exhaust the above atmospheric gas from the exhaust pipe 34 to the outside.
  • the heating zone 12 when the treatment material 1 is indirectly heated in the heating zone 12, the heating zone 12 has a double-pipe structure, and a combustion device 12c such as a burner is provided in the outer pipe 12b. Combustion is performed in the combustion section 12d between the inner pipe 12a and the outer pipe 12b by the device 12c, but a radiant tube (not shown) serving as a combustion section is provided on the outer peripheral side of the inner pipe 12a. It is also possible to introduce an atmospheric gas containing hydrogen gas (not shown).
  • the atmosphere gas that flows out from the continuous annealing furnace 10 through the inlet seal portion 11 and the outlet seal portion 16 is heated. It is also possible to introduce the hydrogen gas contained in the atmospheric gas into the 12 combustion sections 12d and burn it in the combustion section 12d.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

When atmosphere gas containing hydrogen gas is supplied from an atmosphere gas supply device into a continuous annealing furnace filled with the atmosphere gas, excess atmosphere gas supplied into the continuous annealing furnace is prevented from being discharged to the outside and hydrogen gas contained in the excess atmosphere gas is effectively used. A continuous annealing furnace (10) is configured such that a material to be treated (1) led through an inlet seal portion (11) is continuously conveyed from a heating zone (12) to a cooling zone (13a-13c) in atmosphere gas containing hydrogen gas, and the material to be treated is annealed by being indirectly-heated in the heating zone and then cooled in the cooling zone, and led out through the outlet seal portion (16).  In the continuous annealing furnace, an atmosphere gas supply device (20) for supplying the atmosphere gas into the continuous annealing furnace and an atmosphere gas control device (30) for leading excess atmosphere gas in the continuous annealing furnace to a combustion portion in the heating zone are provided.

Description

連続焼鈍炉Continuous annealing furnace
　本発明は、入口シール部を通して導入された処理材を、水素ガスを含む雰囲気ガス中において加熱帯から冷却帯に連続して搬送させ、処理材を加熱帯で間接加熱させた後、このように加熱された処理材を冷却帯で冷却させて焼鈍し、焼鈍された処理材を、出口シール部を通して導出させるようにした連続焼鈍炉に関するものである。特に、上記の入口シール部や出口シール部から漏れ出した雰囲気ガスを補充すると共に、処理材と一緒に連続焼鈍炉内に導かれた酸素を水素ガスと反応させて処理するために、雰囲気ガス供給装置から連続焼鈍炉内に水素ガスを含む雰囲気ガスを供給するようにした場合において、連続焼鈍炉内に供給された過剰の雰囲気ガスが外部に排出されるのを抑制すると共に、過剰の雰囲気ガスに含まれる水素ガスを有効に利用するようにした点に特徴を有するものである。 In the present invention, the treatment material introduced through the inlet seal portion is continuously conveyed from the heating zone to the cooling zone in the atmosphere gas containing hydrogen gas, and after the treatment material is indirectly heated in the heating zone, as described above. The present invention relates to a continuous annealing furnace in which a heated treatment material is cooled and cooled in a cooling zone and the annealed treatment material is led out through an outlet seal portion. In particular, in order to replenish the atmospheric gas leaked from the inlet seal portion and the outlet seal portion and to react the oxygen introduced into the continuous annealing furnace together with the treatment material with hydrogen gas, the atmospheric gas is used. When supplying atmospheric gas containing hydrogen gas from the supply device into the continuous annealing furnace, the excessive atmospheric gas supplied into the continuous annealing furnace is prevented from being discharged to the outside, and an excessive atmosphere is provided. It is characterized in that hydrogen gas contained in the gas is effectively used.
　従来から、冷間圧延等により得られたステンレス鋼帯等の長尺状の処理材を連続焼鈍炉において焼鈍させるにあたり、上記の処理材における表面の光沢が損なわれないようにして光輝焼鈍させることが行われている。 Conventionally, when annealing a long treatment material such as a stainless steel strip obtained by cold rolling or the like in a continuous annealing furnace, bright annealing is performed so that the gloss of the surface of the treatment material is not impaired. Has been done.
　そして、このように連続焼鈍炉において長尺状の処理材を光輝焼鈍させるにあたっては、図１に示すように、長尺状の処理材１を、水素ガスを含む雰囲気ガス、一般には水素ガスと窒素ガスを主成分とする雰囲気ガスが充填された連続焼鈍炉１０内に入口シール部１１を通して導入し、この処理材１を連続焼鈍炉１０内における加熱帯１２で間接加熱させ、このように加熱された処理材１を冷却帯１３ａ～１３ｃに導いて冷却させ、さらにこの処理材１をローラ１４ａが設けられたトップロール室１４からシュート１５を通して出口シール部１６に導き、この出口シール部１６を通して連続焼鈍炉１０内から導出させることが行われている（例えば、特許文献１，２参照）。 Then, in the case where the long treatment material is brightly annealed in the continuous annealing furnace as described above, as shown in FIG. 1, the long treatment material 1 is treated with an atmosphere gas containing hydrogen gas, generally hydrogen gas. It introduce | transduces through the inlet seal part 11 in the continuous annealing furnace 10 with which atmospheric gas which has nitrogen gas as a main component was filled, and this processing material 1 is indirectly heated by the heating zone 12 in the continuous annealing furnace 10, and is heated in this way. The treated material 1 is led to the cooling zones 13a to 13c to be cooled, and further, the treated material 1 is guided from the top roll chamber 14 provided with the roller 14a to the outlet seal portion 16 through the chute 15 and through the outlet seal portion 16 Deriving from the continuous annealing furnace 10 is performed (see, for example, Patent Documents 1 and 2).
　ここで、このような連続焼鈍炉１０においては、上記の入口シール部１１や出口シール部１６から漏れ出した雰囲気ガスを補充すると共に、処理材１と一緒に連続焼鈍炉１０内に導かれた酸素を雰囲気ガスに含まれる水素ガスと反応させて処理するために、雰囲気ガス供給装置２０から水素ガスを含む雰囲気ガスを連続焼鈍炉１０内に供給することが行われている。 Here, in such a continuous annealing furnace 10, the atmosphere gas leaked from the inlet seal portion 11 and the outlet seal portion 16 is replenished and introduced into the continuous annealing furnace 10 together with the treatment material 1. In order to treat oxygen by reacting with hydrogen gas contained in the atmospheric gas, an atmospheric gas containing hydrogen gas is supplied from the atmospheric gas supply device 20 into the continuous annealing furnace 10.
　そして、このように雰囲気ガス供給装置２０から水素ガスを含む雰囲気ガスを連続焼鈍炉１０内に供給するにあたっては、一般に、処理材１と一緒に連続焼鈍炉１０内に導かれた酸素を雰囲気ガスに含まれる水素ガスと反応させて十分に処理するため、雰囲気ガス供給装置２０から上記の雰囲気ガスを連続焼鈍炉１０内に過剰に供給するようにしている。 When supplying the atmospheric gas containing hydrogen gas from the atmospheric gas supply device 20 to the continuous annealing furnace 10 as described above, generally, oxygen introduced into the continuous annealing furnace 10 together with the treatment material 1 is used as the atmospheric gas. The atmosphere gas is supplied excessively from the atmosphere gas supply device 20 into the continuous annealing furnace 10 in order to react with the hydrogen gas contained in the atmosphere.
　ここで、このように雰囲気ガス供給装置２０から雰囲気ガスを連続焼鈍炉１０内に過剰に供給した場合、この連続焼鈍炉１０内における雰囲気ガスの圧力が次第に上昇するため、連続焼鈍炉１０内における雰囲気ガスを外部に排出させることが必要になる。特に、近年においては、上記の入口シール部１１や出口シール部１６に気密性の高いロールシール等が使用されるようになり、入口シール部１１や出口シール部１６から漏れ出す雰囲気ガスの量が少なくなり、連続焼鈍炉１０内から排出させる雰囲気ガスの量が増加する傾向にある。 Here, when the atmospheric gas is excessively supplied from the atmospheric gas supply device 20 to the continuous annealing furnace 10 in this way, the pressure of the atmospheric gas in the continuous annealing furnace 10 gradually increases. It is necessary to discharge the atmospheric gas to the outside. In particular, in recent years, a highly airtight roll seal or the like has been used for the inlet seal portion 11 or the outlet seal portion 16 described above, and the amount of atmospheric gas that leaks from the inlet seal portion 11 or the outlet seal portion 16 is reduced. The amount of atmospheric gas discharged from the continuous annealing furnace 10 tends to increase.
　そして、このように連続焼鈍炉１０内から雰囲気ガスを排出させる際に、雰囲気ガスに含まれる水素ガスが燃焼しないようにするため、この雰囲気ガスを冷却させたり、雰囲気ガスを空気で希釈させたりすることが必要になり、コストが高くつくと共に、過剰の雰囲気ガスに含まれる水素ガスが無駄になるという問題があった。 And, when discharging the atmospheric gas from the continuous annealing furnace 10 in this way, in order to prevent the hydrogen gas contained in the atmospheric gas from burning, the atmospheric gas is cooled or the atmospheric gas is diluted with air. There is a problem that the cost is high and the hydrogen gas contained in the excess atmosphere gas is wasted.
特開平３－１３４１２０号公報JP-A-3-134120 特開平７－２６８４９３号公報JP 7-268493 A
　本発明は、入口シール部を通して導入された処理材を、水素ガスを含む雰囲気ガス中において加熱帯から冷却帯に連続して搬送させ、処理材を加熱帯で間接加熱させた後、このように加熱された処理材を冷却帯で冷却させて焼鈍し、焼鈍された処理材を、出口シール部を通して導出させるようにした連続焼鈍炉における上記のような問題を解決することを課題とするものである。 In the present invention, the treatment material introduced through the inlet seal portion is continuously conveyed from the heating zone to the cooling zone in the atmosphere gas containing hydrogen gas, and after the treatment material is indirectly heated in the heating zone, as described above. It is an object to solve the above problems in a continuous annealing furnace in which the heated treatment material is cooled and cooled in a cooling zone, and the annealed treatment material is led out through the outlet seal portion. is there.
　すなわち、本発明においては、上記のように入口シール部や出口シール部から漏れ出した雰囲気ガスを補充すると共に、処理材と一緒に連続焼鈍炉内に導かれた酸素を水素ガスと反応させて十分に処理するために、雰囲気ガス供給装置から連続焼鈍炉内に上記の雰囲気ガスを供給するようにした場合において、連続焼鈍炉内に供給された過剰の雰囲気ガスが外部に排出されるのを抑制すると共に、過剰の雰囲気ガスに含まれる水素ガスを有効に利用することを課題とするものである。 That is, in the present invention, the atmosphere gas leaked from the inlet seal portion and the outlet seal portion is replenished as described above, and oxygen introduced into the continuous annealing furnace together with the treatment material is reacted with hydrogen gas. In order to perform sufficient processing, when the above atmospheric gas is supplied from the atmospheric gas supply device into the continuous annealing furnace, excess atmospheric gas supplied into the continuous annealing furnace is discharged to the outside. An object of the present invention is to effectively use the hydrogen gas contained in the excess atmospheric gas while suppressing it.
　本発明においては、上記のような課題を解決するため、長尺状の処理材を導入させる入口シール部と、燃焼部における燃焼により処理材を間接加熱させる加熱帯と、加熱された処理材を冷却する冷却帯と、冷却された処理材を導出させる出口シール部とを備え、上記の入口シール部を通して導入された処理材を、水素ガスを含む雰囲気ガス中で上記の加熱帯から冷却帯に連続して搬送させて焼鈍させ、焼鈍された処理材を上記の出口シール部を通して導出させる連続焼鈍炉において、この連続焼鈍炉内に上記の雰囲気ガスを供給する雰囲気ガス供給装置と、連続焼鈍炉内における過剰の雰囲気ガスを上記の加熱帯の燃焼部に導く雰囲気ガス制御装置とを設けた。 In the present invention, in order to solve the problems as described above, an inlet seal portion for introducing a long treatment material, a heating zone for indirectly heating the treatment material by combustion in the combustion portion, and a heated treatment material are provided. A cooling zone for cooling and an outlet seal portion for leading out the cooled treatment material, and the treatment material introduced through the inlet seal portion is transferred from the heating zone to the cooling zone in an atmospheric gas containing hydrogen gas. In a continuous annealing furnace that continuously conveys and anneals and anneals the treated material through the outlet seal portion, an atmospheric gas supply device that supplies the atmospheric gas into the continuous annealing furnace, and a continuous annealing furnace And an atmospheric gas control device for introducing excess atmospheric gas into the combustion section of the heating zone.
　ここで、この連続焼鈍炉において、処理材を間接加熱させる上記の加熱帯としては、処理材を通過させる内管の外周側に外管を設け、上記の内管と外管との間の燃焼部において燃焼を行うようにしたもの、いわゆるマッフル式のものを用いることができる。 Here, in the continuous annealing furnace, as the heating zone for indirectly heating the treatment material, an outer tube is provided on the outer peripheral side of the inner tube through which the treatment material is passed, and combustion between the inner tube and the outer tube is performed. A so-called muffle type can be used.
　また、上記の内管と外管との間の燃焼部において燃焼を行うにあたっては、上記の外管にバーナ等の燃焼装置を設けるようにすることができる。 Also, when combustion is performed in the combustion section between the inner tube and the outer tube, a combustion device such as a burner can be provided in the outer tube.
　また、上記の連続焼鈍炉において、連続焼鈍炉内における過剰の雰囲気ガスを雰囲気ガス制御装置により加熱帯の燃焼部に導くにあたり、雰囲気ガスの温度が非常に高い場合には、機器類の耐熱性などが原因となり、雰囲気ガスを加熱帯の燃焼部に導くことが困難になるため、雰囲気ガスがある程度冷却された冷却帯から過剰の雰囲気ガスを加熱帯の燃焼部に導くようにすることが好ましい。 In the above-mentioned continuous annealing furnace, when the ambient gas temperature is very high when the excess atmosphere gas in the continuous annealing furnace is led to the combustion zone of the heating zone by the atmosphere gas control device, the heat resistance of the equipment Therefore, it is difficult to introduce the atmospheric gas to the combustion zone in the heating zone. Therefore, it is preferable to introduce excess atmospheric gas to the combustion zone in the heating zone from the cooling zone in which the atmospheric gas is cooled to some extent. .
　また、上記のようにして雰囲気ガス制御装置により連続焼鈍炉内から過剰の雰囲気ガスを加熱帯の燃焼部に導いた場合において、この雰囲気ガスに含まれる水素ガスが燃焼部において適切に燃焼されて消費されるようにするため、上記の燃焼部の温度が水素ガスの着火温度以上であることが好ましい。 In addition, when excess atmospheric gas is led from the continuous annealing furnace to the combustion section of the heating zone by the atmospheric gas control device as described above, hydrogen gas contained in the atmospheric gas is appropriately burned in the combustion section. In order to be consumed, it is preferable that the temperature of the combustion part is equal to or higher than the ignition temperature of hydrogen gas.
　本発明における連続焼鈍炉においては、上記のように連続焼鈍炉内における過剰の雰囲気ガスを、雰囲気ガス制御装置により連続焼鈍炉内から加熱帯の燃焼部に導くようにしたため、このように導かれた過剰の雰囲気ガスに含まれる水素ガスがこの燃焼部において燃焼されるようになる。 In the continuous annealing furnace according to the present invention, as described above, excess atmosphere gas in the continuous annealing furnace is guided from the inside of the continuous annealing furnace to the combustion zone of the heating zone by the atmosphere gas control device. The hydrogen gas contained in the excess atmospheric gas is combusted in this combustion section.
　この結果、本発明における連続焼鈍炉においては、連続焼鈍炉内における過剰の雰囲気ガスに含まれる水素ガスが加熱帯の燃焼部における燃焼に有効に利用されるようになると共に、過剰の雰囲気ガスが連続焼鈍炉内から外部に排出されるのが抑制され、この雰囲気ガスを冷却させたり、雰囲気ガスを空気で希釈させたりする必要もなくなり、コストも低減されるようになる。 As a result, in the continuous annealing furnace in the present invention, the hydrogen gas contained in the excess atmosphere gas in the continuous annealing furnace is effectively utilized for combustion in the combustion section of the heating zone, and the excess atmosphere gas Exhaust from the inside of the continuous annealing furnace is suppressed, and there is no need to cool the atmospheric gas or dilute the atmospheric gas with air, thereby reducing costs.
従来の連続焼鈍炉の例を示した概略説明図である。It is the schematic explanatory drawing which showed the example of the conventional continuous annealing furnace. 本発明の一実施形態に係る連続焼鈍炉を示した概略説明図である。It is the schematic explanatory drawing which showed the continuous annealing furnace which concerns on one Embodiment of this invention.
　以下、この発明の実施形態に係る連続焼鈍炉を添付図面に基づいて具体的に説明する。なお、この発明に係る連続焼鈍炉は下記の実施形態に示したものに限定されず、発明の要旨を変更しない範囲において、適宜変更して実施できるものである。 Hereinafter, a continuous annealing furnace according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings. The continuous annealing furnace according to the present invention is not limited to the one shown in the following embodiment, and can be implemented with appropriate modifications within a range not changing the gist of the invention.
　この実施形態においては、図２に示すように、冷間圧延により得られたステンレス鋼帯等の長尺状の処理材１を、入口シール部１１を通して水素ガスを含む雰囲気ガス、一般には水素ガスと窒素ガスを主成分とする雰囲気ガスが充填された連続焼鈍炉１０内に導くようにしている。 In this embodiment, as shown in FIG. 2, an elongated treatment material 1 such as a stainless steel strip obtained by cold rolling is applied to an atmosphere gas containing hydrogen gas through an inlet seal portion 11, generally hydrogen gas. And a continuous annealing furnace 10 filled with an atmospheric gas mainly composed of nitrogen gas.
　ここで、上記の入口シール部１１においては、連続焼鈍炉１０内に充填された上記の雰囲気ガスが外部に流出するのを抑制するため、ロールシール１１ａを用いている。 Here, in the inlet seal portion 11, the roll seal 11a is used in order to prevent the atmospheric gas filled in the continuous annealing furnace 10 from flowing out.
　そして、この連続焼鈍炉１０においては、上記のように入口シール部１１を通して導かれた処理材１を加熱帯１２において間接加熱させるようにしている。 In the continuous annealing furnace 10, the treatment material 1 guided through the inlet seal portion 11 is indirectly heated in the heating zone 12 as described above.
　ここで、上記のように加熱帯１２において処理材１を間接加熱させるにあたっては、この加熱帯１２を二重管構造にし、上記の処理材１を加熱帯１２の内管１２ａ内を通過させるようにすると共に、外管１２ｂにバーナ等の燃焼装置１２ｃを設け、この燃焼装置１２ｃにより内管１２ａと外管１２ｂとの間の燃焼部１２ｄにおいて燃焼を行い、内管１２ａ内を通過する処理材１を間接加熱させるようにしている。 Here, when the treatment material 1 is indirectly heated in the heating zone 12 as described above, the heating zone 12 has a double tube structure, and the treatment material 1 passes through the inner tube 12 a of the heating zone 12. In addition, a combustion device 12c such as a burner is provided in the outer tube 12b, the combustion device 12c performs combustion in the combustion portion 12d between the inner tube 12a and the outer tube 12b, and passes through the inner tube 12a. 1 is indirectly heated.
　また、この加熱帯１２においては、上記の燃焼部１２ｄにおいて燃焼された燃焼排ガスを、排ガス管１２ｅを通して冷却装置１２ｆに導き、この冷却装置１２ｆにより燃焼排ガスを冷却させた後、この燃焼排ガスを排ガス管１２ｅから外部に排出させるようにしている。 In the heating zone 12, the combustion exhaust gas combusted in the combustion section 12d is guided to the cooling device 12f through the exhaust gas pipe 12e. After the combustion exhaust gas is cooled by the cooling device 12f, the combustion exhaust gas is discharged into the exhaust gas. The tube 12e is discharged outside.
　次いで、このように加熱帯１２において加熱された処理材１を第１～第３の冷却帯１３ａ～１３ｃに順々に導いて冷却させ、このように冷却された処理材１をローラ１４ａが設けられたトップロール室１４に導き、この処理材１をトップロール室１４からシュート１５を通して出口シール部１６に導き、この出口シール部１６を通して上記の処理材１をこの連続焼鈍炉１０から導出させるようにしている。 Next, the treatment material 1 heated in the heating zone 12 in this manner is sequentially guided to the first to third cooling zones 13a to 13c to be cooled, and the treatment material 1 thus cooled is provided with a roller 14a. The processed material 1 is guided from the top roll chamber 14 through the chute 15 to the outlet seal portion 16, and the treated material 1 is led out from the continuous annealing furnace 10 through the outlet seal portion 16. I have to.
　ここで、上記の出口シール部１６においても、連続焼鈍炉１０内に充填された上記の雰囲気ガスが外部に流出するのを抑制するため、ロールシール１６ａを用いている。 Here, also in the outlet seal portion 16 described above, the roll seal 16a is used in order to prevent the atmospheric gas filled in the continuous annealing furnace 10 from flowing out.
　また、この実施形態の連続焼鈍炉１０においても、上記の入口シール部１１や出口シール部１６から漏れ出した雰囲気ガスを補充すると共に、処理材１と一緒に連続焼鈍炉１０内に導かれた酸素を雰囲気ガスに含まれる水素ガスと反応させて十分に処理するために、雰囲気ガス供給装置２０から水素ガスを含む雰囲気ガスを連続焼鈍炉１０内に過剰に供給するようにしている。なお、この実施形態の連続焼鈍炉１０においては、雰囲気ガス供給装置２０から水素ガスを含む雰囲気ガスを連続焼鈍炉１０内に供給するにあたり、上記の雰囲気ガスを第３の冷却帯１３ｃに供給させるようにしたが、上記の雰囲気ガスを供給する位置は特に限定されない。 Also in the continuous annealing furnace 10 of this embodiment, the atmosphere gas leaked from the inlet seal portion 11 and the outlet seal portion 16 is replenished and introduced into the continuous annealing furnace 10 together with the treatment material 1. In order to sufficiently treat oxygen by reacting it with hydrogen gas contained in the atmospheric gas, the atmospheric gas containing hydrogen gas is excessively supplied into the continuous annealing furnace 10 from the atmospheric gas supply device 20. In addition, in the continuous annealing furnace 10 of this embodiment, when supplying atmospheric gas containing hydrogen gas from the atmospheric gas supply apparatus 20 into the continuous annealing furnace 10, said atmospheric gas is supplied to the 3rd cooling zone 13c. However, the position for supplying the atmospheric gas is not particularly limited.
　そして、この実施形態の連続焼鈍炉１０においては、このように雰囲気ガス供給装置２０によって過剰の雰囲気ガスが供給された連続焼鈍炉１０内から過剰の雰囲気ガスを上記の加熱帯１２の燃焼部１２ｄに導く雰囲気ガス制御装置３０を設けている。 And in the continuous annealing furnace 10 of this embodiment, the excess atmospheric gas is supplied from the inside of the continuous annealing furnace 10 supplied with the excessive atmospheric gas by the atmospheric gas supply device 20 in this manner, and the combustion section 12d of the heating zone 12 is used. Atmospheric gas control device 30 is provided.
　ここで、上記の雰囲気ガス制御装置３０においては、連続焼鈍炉１０内における雰囲気ガスの圧力を測定する圧力計３１を設け、この圧力計３１によって測定された連続焼鈍炉１０内における雰囲気ガスの圧力を制御手段３２に出力させるようにしている。 Here, in the above atmospheric gas control device 30, a pressure gauge 31 for measuring the pressure of the atmospheric gas in the continuous annealing furnace 10 is provided, and the pressure of the atmospheric gas in the continuous annealing furnace 10 measured by the pressure gauge 31. Is output to the control means 32.
　また、この雰囲気ガス制御装置３０においては、連続焼鈍炉１０内における過剰の雰囲気ガスを上記の加熱帯１２の燃焼部１２ｄに導く案内管３３に第１バルブ３３ａと第２バルブ３３ｂを設けると共に、この第１バルブ３３ａと第２バルブ３３ｂとの間の案内管３３の部分に、雰囲気ガスを外部に排出させる排出管３４を接続し、この排出管３４に第３バルブ３４ａを設け、上記の制御手段３２によって第１バルブ３３ａと第２バルブ３３ｂと第３バルブ３４ａとを制御するようにしている。 Further, in the atmospheric gas control device 30, a first valve 33a and a second valve 33b are provided in the guide pipe 33 that guides excess atmospheric gas in the continuous annealing furnace 10 to the combustion section 12d of the heating zone 12, A discharge pipe 34 for discharging atmospheric gas to the outside is connected to a portion of the guide pipe 33 between the first valve 33a and the second valve 33b, and a third valve 34a is provided in the discharge pipe 34 to control the above control. The means 32 controls the first valve 33a, the second valve 33b, and the third valve 34a.
　そして、燃焼部１２ｄの温度が水素ガスの着火温度以上になっている場合において、上記の圧力計３１によって測定された連続焼鈍炉１０内における雰囲気ガスの圧力が所定値になるように、上記の制御手段３２により上記の第１バルブ３３ａと第２バルブ３３ｂとを開ける一方、上記の第３バルブ３４ａを閉じて、連続焼鈍炉１０内における過剰の雰囲気ガスを上記の案内管３３を通して加熱帯１２の燃焼部１２ｄに導くようにする。 When the temperature of the combustion part 12d is equal to or higher than the ignition temperature of hydrogen gas, the pressure of the atmospheric gas in the continuous annealing furnace 10 measured by the pressure gauge 31 is set to a predetermined value. While the first valve 33 a and the second valve 33 b are opened by the control means 32, the third valve 34 a is closed, and excess atmosphere gas in the continuous annealing furnace 10 is passed through the guide tube 33 to the heating zone 12. To the combustion section 12d.
　そして、このように燃焼部１２ｄに導かれた雰囲気ガスに含まれる水素ガスを上記の燃焼装置１２ｃにより燃焼させ、燃焼排ガスと一緒に上記の排ガス管１２ｅを通して外部に排出させるようにしている。 The hydrogen gas contained in the atmospheric gas thus led to the combustion section 12d is burned by the combustion device 12c and discharged to the outside together with the combustion exhaust gas through the exhaust gas pipe 12e.
　このようにすると、連続焼鈍炉１０内における水素ガスを含む雰囲気ガスがそのまま外部に排出されるのが防止されると共に、排出される雰囲気ガスに含まれる水素ガスが加熱帯１２の燃焼部１２ｄにおける燃焼に有効に利用されるようになる。 In this way, the atmospheric gas containing hydrogen gas in the continuous annealing furnace 10 is prevented from being discharged to the outside as it is, and the hydrogen gas contained in the discharged atmospheric gas is in the combustion section 12d of the heating zone 12. Effectively used for combustion.
　なお、上記の加熱帯１２の燃焼部１２ｄにおいて燃焼を行わないような場合等においては、上記の制御手段３２により上記の第１バルブ３３ａと第３バルブ３４ａとを開ける一方、上記の第２バルブ３３ｂを閉じて、上記の雰囲気ガスを排出管３４から外部に排出させるようにすることもできる。 In the case where combustion is not performed in the combustion section 12d of the heating zone 12, the control means 32 opens the first valve 33a and the third valve 34a, while the second valve It is also possible to close 33b and exhaust the above atmospheric gas from the exhaust pipe 34 to the outside.
　また、この実施形態おいては、上記の加熱帯１２において処理材１を間接加熱させるにあたり、この加熱帯１２を二重管構造にし、外管１２ｂにバーナ等の燃焼装置１２ｃを設け、この燃焼装置１２ｃにより内管１２ａと外管１２ｂとの間の燃焼部１２ｄにおいて燃焼を行うようにしたが、内管１２ａの外周側に燃焼部となるラジアントチューブ（図示せず）を設け、このラジアントチューブ（図示せず）に水素ガスを含む雰囲気ガスを導くよ
うにすることも可能である。 In this embodiment, when the treatment material 1 is indirectly heated in the heating zone 12, the heating zone 12 has a double-pipe structure, and a combustion device 12c such as a burner is provided in the outer pipe 12b. Combustion is performed in the combustion section 12d between the inner pipe 12a and the outer pipe 12b by the device 12c, but a radiant tube (not shown) serving as a combustion section is provided on the outer peripheral side of the inner pipe 12a. It is also possible to introduce an atmospheric gas containing hydrogen gas (not shown).
　さらに、上記の実施形態における連続焼鈍炉１０においては、図示していないが、上記の入口シール部１１や出口シール部１６を通して連続焼鈍炉１０内から外部に流出される上記の雰囲気ガスを加熱帯１２の燃焼部１２ｄに導き、この雰囲気ガスに含まれる水素ガスを燃焼部１２ｄにおいて燃焼させるようにすることも可能である。 Further, in the continuous annealing furnace 10 in the above-described embodiment, although not shown, the atmosphere gas that flows out from the continuous annealing furnace 10 through the inlet seal portion 11 and the outlet seal portion 16 is heated. It is also possible to introduce the hydrogen gas contained in the atmospheric gas into the 12 combustion sections 12d and burn it in the combustion section 12d.
　１　処理材
　１０　連続焼鈍炉
　１１　入口シール部
　１１ａ　ロールシール
　１２　加熱帯
　１２ａ　内管
　１２ｂ　外管
　１２ｃ　燃焼装置
　１２ｄ　燃焼部
　１２ｅ　排ガス管
　１２ｆ　冷却装置
　１３ａ～１３ｃ　第１～第３の冷却帯
　１４　トップロール室
　１４ａ　ローラ
　１５　シュート
　１６　出口シール部
　１６ａ　ロールシール
　２０　雰囲気ガス供給装置
　３０　雰囲気ガス制御装置
　３１　圧力計
　３２　制御手段
　３３　案内管
　３３ａ　第１バルブ
　３３ｂ　第２バルブ
　３４　排出管
　３４ａ　第３バルブ DESCRIPTION OF SYMBOLS 1 Treatment material 10 Continuous annealing furnace 11 Inlet seal part 11a Roll seal 12 Heating zone 12a Inner pipe 12b Outer pipe 12c Combustion device 12d Combustion part 12e Exhaust gas pipe 12f Cooling device 13a-13c 1st-3rd cooling zone 14 Top roll chamber 14a roller 15 chute 16 outlet seal part 16a roll seal 20 atmospheric gas supply device 30 atmospheric gas control device 31 pressure gauge 32 control means 33 guide pipe 33a first valve 33b second valve 34 discharge pipe 34a third valve

Claims (5)

  1. 　長尺状の処理材を導入させる入口シール部と、燃焼部における燃焼により処理材を間接加熱させる加熱帯と、加熱された処理材を冷却する冷却帯と、冷却された処理材を導出させる出口シール部とを備え、上記の入口シール部を通して導入された処理材を、水素ガスを含む雰囲気ガス中で上記の加熱帯から冷却帯に連続して搬送させて焼鈍させ、焼鈍された処理材を上記の出口シール部を通して導出させる連続焼鈍炉において、この連続焼鈍炉内に上記の雰囲気ガスを供給する雰囲気ガス供給装置と、連続焼鈍炉内における過剰の雰囲気ガスを上記の加熱帯の燃焼部に導く雰囲気ガス制御装置とを設けたことを特徴とする連続焼鈍炉。 An inlet seal portion for introducing a long treatment material, a heating zone for indirectly heating the treatment material by combustion in the combustion portion, a cooling zone for cooling the heated treatment material, and an outlet for deriving the cooled treatment material The treatment material introduced through the inlet seal portion is annealed by continuously transporting the treatment material introduced through the inlet seal portion from the heating zone to the cooling zone in the atmosphere gas containing hydrogen gas. In the continuous annealing furnace led out through the outlet seal part, the atmospheric gas supply device for supplying the atmospheric gas into the continuous annealing furnace, and the excess atmospheric gas in the continuous annealing furnace to the combustion part of the heating zone A continuous annealing furnace provided with a leading atmospheric gas control device.
  2. 　請求項１に記載の連続焼鈍炉において、上記の加熱帯は、処理材を通過させる内管の外周側に外管が設けられ、上記の内管と外管との間の燃焼部において燃焼を行うことを特徴とする連続焼鈍炉。 2. The continuous annealing furnace according to claim 1, wherein the heating zone is provided with an outer pipe on an outer peripheral side of the inner pipe through which the processing material passes, and combustion is performed in a combustion portion between the inner pipe and the outer pipe. A continuous annealing furnace characterized by being performed.
  3. 　請求項２に記載の連続焼鈍炉において、上記の外管に燃焼装置が設けられていることを特徴とする連続焼鈍炉。 The continuous annealing furnace according to claim 2, wherein a combustion device is provided in the outer pipe.
  4. 　請求項１～請求項３の何れか１項に記載の連続焼鈍炉において、上記の雰囲気ガス制御装置は、上記の冷却帯から過剰の雰囲気ガスを加熱帯の燃焼部に導くことを特徴とする連続焼鈍炉。 The continuous annealing furnace according to any one of claims 1 to 3, wherein the atmospheric gas control device guides excess atmospheric gas from the cooling zone to a combustion section of a heating zone. Continuous annealing furnace.
  5. 　請求項１～請求項４の何れか１項に記載の連続焼鈍炉において、上記の雰囲気ガス制御装置によって過剰の雰囲気ガスが導かれる上記の燃焼部の温度が水素ガスの着火温度以上であることを特徴とする連続焼鈍炉。 The continuous annealing furnace according to any one of claims 1 to 4, wherein the temperature of the combustion section where excess atmospheric gas is introduced by the atmospheric gas control device is equal to or higher than an ignition temperature of hydrogen gas. A continuous annealing furnace characterized by
PCT/JP2009/060753 2009-05-20 2009-06-12 Continuous annealing furnace WO2010134214A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7184473B1 (en) * 2021-10-25 2022-12-06 中外炉工業株式会社 Continuous annealing furnace

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103469134B (en) * 2013-08-14 2015-10-21 西安赛特思迈钛业有限公司 Titanium or titanium alloy coils continuous annealer and the method for annealing of a material
CN104278141A (en) * 2014-09-25 2015-01-14 合肥恒泰钢结构有限公司 Cold-rolled steel strip continuous reduction annealing furnace
EP3441481B1 (en) * 2016-04-05 2020-11-11 Nippon Steel Corporation Cooling facility in continuous annealing furnace
CN106801138A (en) * 2017-03-10 2017-06-06 江苏伟建工具科技有限公司 A kind of H.S.S. annealing pipe
CN106755797A (en) * 2017-03-10 2017-05-31 江苏伟建工具科技有限公司 A kind of high-speed steel convection current cools down annealing pipe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03134120A (en) * 1989-10-20 1991-06-07 Nisshin Steel Co Ltd Method and apparatus for bright-annealing stainless steel strip
JPH07268493A (en) * 1994-03-31 1995-10-17 Chugai Ro Co Ltd Heating zone of vertical continuous brilliant annealing furnace for steel strip

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665343A (en) * 1970-11-09 1972-05-23 Motorola Inc Voltage controlled multivibrator
JPS5133707A (en) * 1974-09-14 1976-03-23 Daido Steel Co Ltd RONAIGASUJUNKANSHIKI SHODONRO
JPS62290830A (en) * 1986-06-11 1987-12-17 Nisshin Steel Co Ltd Continuous annealing method for steel strip and annealing furnace therefor
JP2520507B2 (en) * 1990-07-12 1996-07-31 新日本製鐵株式会社 Continuous bright annealing method for stainless steel strip
JPH11229041A (en) * 1998-02-09 1999-08-24 Daido Steel Co Ltd Continuous heat treatment furnace
JP4156065B2 (en) * 1998-02-24 2008-09-24 日新製鋼株式会社 Continuous reducing atmosphere annealing apparatus and method for metal strip

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03134120A (en) * 1989-10-20 1991-06-07 Nisshin Steel Co Ltd Method and apparatus for bright-annealing stainless steel strip
JPH07268493A (en) * 1994-03-31 1995-10-17 Chugai Ro Co Ltd Heating zone of vertical continuous brilliant annealing furnace for steel strip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7184473B1 (en) * 2021-10-25 2022-12-06 中外炉工業株式会社 Continuous annealing furnace

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