JPH09316546A - Continuous annealing furnace - Google Patents
Continuous annealing furnaceInfo
- Publication number
- JPH09316546A JPH09316546A JP15637396A JP15637396A JPH09316546A JP H09316546 A JPH09316546 A JP H09316546A JP 15637396 A JP15637396 A JP 15637396A JP 15637396 A JP15637396 A JP 15637396A JP H09316546 A JPH09316546 A JP H09316546A
- Authority
- JP
- Japan
- Prior art keywords
- strip
- annealing furnace
- continuous annealing
- shaped metal
- gas
- 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.)
- Withdrawn
Links
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
(57)【要約】
【課題】 本発明は、連続焼鈍炉にて、非接触式ガスシ
ールの、吹き付けガスの温度を低下させ、吹き付けガス
のブロワーに汎用ブロワーを用いる等により設備費の増
大を押さえ、またガス循環中の熱損失を小さくしてラン
ニングコストの低減を図る連続焼鈍炉を提供する。
【解決手段】 帯状金属板を連続的に焼鈍する連続焼鈍
炉において、少なくとも帯状金属板１の片面側にハース
ロール３を配置し、反対面側には当該帯状金属板に向け
てシールガスを吐出して、隣り合う雰囲気間をシールす
る非接触式シール装置４ａ，４ｂを配置することを特徴
とする帯状金属板の連続焼鈍炉である。
(57) Abstract: The present invention increases the equipment cost by lowering the temperature of the blowing gas of a non-contact type gas seal in a continuous annealing furnace and using a general-purpose blower as the blowing gas blower. (EN) Provided is a continuous annealing furnace which suppresses running cost by suppressing heat loss during gas circulation. SOLUTION: In a continuous annealing furnace for continuously annealing a strip-shaped metal plate, a hearth roll 3 is arranged on at least one side of the strip-shaped metal plate 1, and a seal gas is discharged toward the strip-shaped metal plate on the opposite side. Then, the strip-shaped metal sheet continuous annealing furnace is characterized in that non-contact type sealing devices 4a and 4b for sealing between adjacent atmospheres are arranged.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、帯状金属板を連続
的に焼鈍する連続焼鈍炉に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous annealing furnace for continuously annealing a strip-shaped metal plate.
【０００２】[0002]
【従来の技術】帯状金属板の連続焼鈍炉では、焼鈍炉の
各ゾーンにより雰囲気ガスの組成が異なる場合がある。
その場合、一般的にはシールロール等による雰囲気シー
ルを行う。2. Description of the Related Art In a continuous annealing furnace for strip-shaped metal sheets, the composition of atmospheric gas may be different depending on each zone of the annealing furnace.
In that case, atmosphere sealing is generally performed by a seal roll or the like.
【０００３】帯状金属板の温度が高い場合や、雰囲気の
高いシール性が要求される場合は、シールロールの適用
が難しいため、特願平７−１７１６０３号，特開昭６２
−２７０７２９号公報，特開昭６３−１０３０２７号公
報及び特開平７−１８３３８号公報にあるように、非接
触のガスシール方式による方法を用いることが知られて
いる。When the temperature of the strip-shaped metal plate is high or when a high atmosphere sealing property is required, it is difficult to apply the seal roll, and therefore, Japanese Patent Application No. 7-171603 and Japanese Patent Application Laid-Open No. 62-171603.
It is known to use a non-contact gas sealing method as described in JP-A-270729, JP-A-63-103027 and JP-A-7-18338.
【０００４】[0004]
【発明が解決しようとする課題】これらのガスシール方
式を用いる場合、シール装置設置場所での帯状金属板の
温度が高いと、シール装置から吹き付けるガスの温度を
帯状金属板の温度と同程度にしておかないと、通板中の
帯状金属板はシールガスによる冷却のため、蛇行や絞り
が発生しやすくなる。In the case of using these gas sealing methods, if the temperature of the strip-shaped metal plate at the place where the sealing device is installed is high, the temperature of the gas blown from the sealing device is made approximately the same as the temperature of the strip-shaped metal plate. Otherwise, the strip-shaped metal plate in the passing plate is cooled by the seal gas, so that meandering and throttling are likely to occur.
【０００５】しかし吹き付けガス温度を帯状金属板と同
程度にするためには、特殊な高温ブロワー等が必要とな
り、設備費の増大を招く。またガス循環中の熱損失も大
きくなるため、ランニングコストが増大するという問題
もある。However, a special high temperature blower or the like is required to bring the temperature of the blowing gas to the same level as that of the strip-shaped metal plate, resulting in an increase in equipment cost. In addition, there is a problem that running cost increases because heat loss during gas circulation also increases.
【０００６】本発明は、上記のような従来の欠点を有利
に解決し、設備費の増大を押さえ、またガス循環中の熱
損失を小さくしてランニングコストの低下を図る連続焼
鈍炉を提供する。The present invention provides a continuous annealing furnace which advantageously solves the above-mentioned conventional drawbacks, suppresses an increase in equipment costs, and reduces heat loss during gas circulation to reduce running costs. .
【０００７】[0007]
(1) 本発明は、帯状金属板を連続的に焼鈍する連続焼
鈍炉において、ハースロールの帯状金属板を挟んだ反対
面側に、当該帯状金属板に向けてガスを吐出して雰囲気
をシールする非接触式シール装置を配置することを特徴
とする帯状金属板の連続焼鈍炉である。(1) The present invention, in a continuous annealing furnace for continuously annealing a strip-shaped metal sheet, on the opposite side of the hearth roll sandwiching the strip-shaped metal sheet, a gas is discharged toward the strip-shaped metal sheet to seal the atmosphere. The continuous annealing furnace for strip-shaped metal sheets is characterized by arranging a non-contact type sealing device.
【０００８】(2) 前記（１）項の連続焼鈍炉におい
て、非接触式シール装置の設置場所が、冷却帯の前後で
あることを特徴とする連続焼鈍炉である。(2) In the continuous annealing furnace of the above item (1), the non-contact type sealing device is installed in the front and rear of the cooling zone.
【０００９】(3) 前記（１）または（２）項の連続焼
鈍炉において、ハースロールの帯状金属板を挟んだ面側
の雰囲気を、シール方式が非接触式シール方式としたこ
とを特徴とする連続焼鈍炉である。(3) In the continuous annealing furnace according to the above (1) or (2), the atmosphere on the surface side of the hearth roll sandwiching the strip-shaped metal plate is a non-contact sealing method. It is a continuous annealing furnace.
【００１０】(4) 前記（１），（２）または（３）項
の連続焼鈍炉において、非接触式シール装置の吹き付け
ガス温度が、２００℃以下であることを特徴とする連続
焼鈍炉である。(4) In the continuous annealing furnace of the above (1), (2) or (3), the blowing gas temperature of the non-contact type sealing device is 200 ° C. or lower. is there.
【００１１】[0011]
【発明の実施の形態】以下本発明の実施の形態を、図面
を用いて詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.
【００１２】図１は本発明による連続焼鈍炉の一例を示
す略断面図である。帯状金属板１を連続的に焼鈍する連
続焼鈍炉２において、ハースロール３の帯状金属板１を
挟んだ反対面側に、非接触式シール装置４ａを設置す
る。FIG. 1 is a schematic sectional view showing an example of a continuous annealing furnace according to the present invention. In a continuous annealing furnace 2 for continuously annealing the strip-shaped metal plate 1, a non-contact type sealing device 4a is installed on the opposite surface side of the hearth roll 3 with the strip-shaped metal plate 1 interposed therebetween.
【００１３】図に示した非接触式シール装置４ａは、ガ
ス吹き付けスリット５ａ及び５ａ′よりガスを帯状金属
板１に吹き付けるとともに、ガス吸引孔６ａよりガスを
吸引することにより雰囲気のシールを行う。吹き付けガ
スは供給配管７ａ及び７ａ′から供給され、吸引された
ガスは吸引ガス排気配管８ａから排出される。The non-contact type sealing device 4a shown in the figure blows gas onto the strip-shaped metal plate 1 through the gas blowing slits 5a and 5a ', and sucks the gas through the gas suction holes 6a to seal the atmosphere. The blowing gas is supplied from the supply pipes 7a and 7a ', and the sucked gas is discharged from the suction gas exhaust pipe 8a.
【００１４】またハースロール３と帯状金属板１が接す
る面側のシール方法も、上記同様に非接触式シール装置
４ｂを設置して行う。非接触式シール装置４ｂは、ガス
吹き付けスリット５ｂ及び５ｂ′よりガスをハースロー
ル３に吹き付けるとともに、ガス吸引孔６ｂよりガスを
吸引することにより、雰囲気のシールを行う。吹き付け
ガスは、吹き付けガス供給配管７ｂ及び７ｂ′から供給
される。吸引されたガスは吸引ガス排気配管８ｂにより
排出される。Further, the method of sealing the surface side where the hearth roll 3 and the strip-shaped metal plate 1 are in contact is also carried out by installing the non-contact type sealing device 4b in the same manner as described above. The non-contact sealing device 4b seals the atmosphere by spraying the gas onto the hearth roll 3 through the gas spray slits 5b and 5b 'and sucking the gas through the gas suction hole 6b. The blowing gas is supplied from the blowing gas supply pipes 7b and 7b '. The sucked gas is discharged through the suction gas exhaust pipe 8b.
【００１５】帯状金属板１はハースロール３に巻き付い
ており、拘束状態にあるため、不均一な熱収縮が発生し
にくくなっている。そのために、非接触式シール装置４
ａから吹き付けられるガスの温度が帯状金属板の温度よ
り低くても、蛇行や絞りは発生しない。Since the strip-shaped metal plate 1 is wrapped around the hearth roll 3 and is in a restrained state, uneven heat shrinkage is unlikely to occur. Therefore, the non-contact type sealing device 4
Even if the temperature of the gas blown from a is lower than the temperature of the strip-shaped metal plate, neither meandering nor throttling occurs.
【００１６】従って、非接触式シール装置４ａから吹き
付けるガス温度を、汎用ブロワーが使用できる温度２０
０℃まで低下させることができるため、設備費の削減が
可能となる。また熱放散も押さえられるため、ランニン
グコストの上昇を引き起こすことがない。Therefore, the temperature of the gas blown from the non-contact type sealing device 4a is set to 20 at which the general blower can be used.
Since the temperature can be lowered to 0 ° C, the equipment cost can be reduced. In addition, since heat dissipation is suppressed, the running cost does not increase.
【００１７】図１は堅型炉に本発明を適用した例であ
る。本発明方法は炉形式を問わず適用できるが、一般的
にハースロール径の大きな堅型炉への適用が望ましい。FIG. 1 shows an example in which the present invention is applied to a rigid furnace. The method of the present invention can be applied to any furnace type, but it is generally desirable to apply it to a rigid furnace having a large hearth roll diameter.
【００１８】一般的には、連続焼鈍炉の冷却帯では気水
冷却等を行うことが多く、加熱帯等の雰囲気とは大きく
異なることとなるため、冷却ゾーンの前後で本発明を適
用することが望ましい。Generally, the cooling zone of the continuous annealing furnace is often cooled by steam or the like, which greatly differs from the atmosphere of the heating zone, so that the present invention can be applied before and after the cooling zone. Is desirable.
【００１９】また図１では、ハースロール３と帯状金属
板１が接する反対面側のシール方法に非接触式シール装
置を用いているが、シールが必要となるのが焼鈍炉の炉
殻とハースロール３の間となるため、ラビリンスシール
方式，シールロール方式，接触シール方式等シール方式
は問わない。Further, in FIG. 1, a non-contact type sealing device is used for the sealing method on the opposite side where the hearth roll 3 and the strip-shaped metal plate 1 are in contact with each other. However, sealing is required in the furnace shell and hearth of the annealing furnace. Since the space is between the rolls 3, the labyrinth seal system, the seal roll system, the contact seal system, or any other seal system does not matter.
【００２０】しかしハースロール３への異物付着や、磨
耗等を少なくするためには、ハースロール３と焼鈍炉２
の炉殻との間のシール方法にも非接触式シール装置を用
いるのが望ましい。However, in order to reduce the adherence of foreign matter to the hearth roll 3 and wear, the hearth roll 3 and the annealing furnace 2
It is desirable to use a non-contact type sealing device for the sealing method between the furnace shell and the furnace shell.
【００２１】また図１では、ガスを吐出するとともにシ
ール装置中央部より吸引するタイプの装置を図示した
が、この吸引機構のない形式の非接触式シール装置を用
いることも可能である。Further, although FIG. 1 shows a device of a type that discharges gas and sucks gas from the central portion of the sealing device, it is also possible to use a non-contact type sealing device without this suction mechanism.
【００２２】[0022]
【発明の効果】以上説明したように本発明によれば、帯
状金属板はハースロールに巻き付いており、拘束状態に
あるため、シール装置から吹き付けられるガスの温度が
低くても、蛇行や絞りは発生しない。従って非接触式ガ
スシールの、吹き付けガスの温度を低下させることが可
能となり、吹き付けガスのブロワーに汎用ブロワーを用
いることができるため設備費の増大を押さえることが可
能となる。またガス循環中の熱損失も小さくすることが
でき、ランニングコストの低下が可能となる。As described above, according to the present invention, since the strip-shaped metal plate is wound around the hearth roll and is in a restrained state, even if the temperature of the gas blown from the sealing device is low, the meandering or throttling will not occur. Does not occur. Therefore, the temperature of the blowing gas of the non-contact type gas seal can be lowered, and since a general-purpose blower can be used as the blower of the blowing gas, an increase in equipment cost can be suppressed. Also, heat loss during gas circulation can be reduced, and running costs can be reduced.
【図１】本発明による連続焼鈍炉の一例を示す略断面図
である。FIG. 1 is a schematic sectional view showing an example of a continuous annealing furnace according to the present invention.
１ 帯状金属板 ２ 連続焼鈍炉 ３ ハースロール ４ａ，４ｂ 非接触式シール装置 ５ａ，５ａ′，５ｂ，５ｂ′ ガス吹き付けスリット ６ａ，６ｂ ガス吸引孔 ７ａ，７ａ′，７ｂ，７ｂ′ 吹き付けガス供給配管 ８ａ，８ｂ 吸引ガス排気配管 1 strip metal plate 2 continuous annealing furnace 3 hearth roll 4a, 4b non-contact type seal device 5a, 5a ', 5b, 5b' gas blowing slits 6a, 6b gas suction holes 7a, 7a ', 7b, 7b' blowing gas supply pipe 8a, 8b Suction gas exhaust pipe
Claims (4)
炉において、ハースロールの帯状金属板を挟んだ反対面
側に、当該帯状金属板に向けてガスを吐出して雰囲気を
シールする非接触式シール装置を配置することを特徴と
する帯状金属板の連続焼鈍炉。1. A continuous annealing furnace for continuously annealing a strip-shaped metal sheet, wherein a gas is discharged toward the strip-shaped metal sheet on the opposite surface side of the hearth roll to seal the atmosphere. A continuous annealing furnace for strip-shaped metal sheets, which is provided with a contact-type sealing device.
帯の前後であることを特徴とする請求項１記載の連続焼
鈍炉。2. The continuous annealing furnace according to claim 1, wherein the non-contact type sealing device is installed at a place before and after the cooling zone.
の雰囲気を、シール方式が非接触式シール方式としたこ
とを特徴とする請求項１又は２記載の連続焼鈍炉。3. The continuous annealing furnace according to claim 1, wherein the atmosphere on the surface side of the hearth roll sandwiching the strip-shaped metal plate is a non-contact sealing method.
が、２００℃以下であることを特徴とする請求項１，２
又は３記載の連続焼鈍炉。4. The non-contact type sealing device has a blowing gas temperature of 200 ° C. or lower.
Or the continuous annealing furnace according to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15637396A JPH09316546A (en) | 1996-05-29 | 1996-05-29 | Continuous annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15637396A JPH09316546A (en) | 1996-05-29 | 1996-05-29 | Continuous annealing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09316546A true JPH09316546A (en) | 1997-12-09 |
Family
ID=15626342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15637396A Withdrawn JPH09316546A (en) | 1996-05-29 | 1996-05-29 | Continuous annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09316546A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100775266B1 (en) * | 2001-12-22 | 2007-11-08 | 주식회사 포스코 | Trouble prevention device of annealing furnace strip |
-
1996
- 1996-05-29 JP JP15637396A patent/JPH09316546A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100775266B1 (en) * | 2001-12-22 | 2007-11-08 | 주식회사 포스코 | Trouble prevention device of annealing furnace strip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030805 |