JPH09125162A - Floater - Google Patents
FloaterInfo
- Publication number
- JPH09125162A JPH09125162A JP31481195A JP31481195A JPH09125162A JP H09125162 A JPH09125162 A JP H09125162A JP 31481195 A JP31481195 A JP 31481195A JP 31481195 A JP31481195 A JP 31481195A JP H09125162 A JPH09125162 A JP H09125162A
- Authority
- JP
- Japan
- Prior art keywords
- strip
- flat plate
- gas
- floater
- plate part
- 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.)
- Pending
Links
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、金属ストリップ等
の帯板を連続熱処理炉中に浮揚状態で非接触支持し搬送
させるためのフロータに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floater for supporting and transporting strips such as metal strips in a continuous heat treatment furnace in a floating state in a non-contact manner.
【0002】[0002]
【従来の技術】連続焼鈍炉内に搬送される金属ストリッ
プ等の帯板が炉内のロールと接触する際にスリ疵が発生
するのを防ぐため、炉内に設けられたプレナムチャンバ
より帯板の下面に向けてガスを吹付けそのガス圧力によ
り該帯板を浮揚支持し帯板を非接触支持することは従来
から帯板の搬送方式として知られている。2. Description of the Related Art In order to prevent the occurrence of scratches when a strip such as a metal strip conveyed in a continuous annealing furnace comes into contact with a roll in the furnace, a strip is provided from a plenum chamber provided in the furnace. It has been conventionally known as a method of transporting a strip that the gas is blown toward the lower surface of the strip to float and support the strip by the gas pressure to support the strip in a non-contact manner.
【0003】そして帯板が走行中に幅方向にずれるのを
防ぐために、例えば特開昭61−261440号公報に
示されたフロータは、図5に示したように帯板cの下面
と相対するプレナムチャンバaの上面に水平に平板部b
を形成し、該平板部bの帯板走行方向前後縁に該帯板c
の幅方向に沿って開口する一対のスリット状噴気口d,
dを開設し、該噴気口d,dから斜め上内方にガスを吹
出させ該平板部b上面と帯板c下面との間に静圧域が形
成されるようにすると共に、該噴気口d,dの開口幅が
帯板cの中央に較べて両端部d’で広くなるようにして
該両端部d’から多量にガスを吹出させることにより帯
板cの幅方向のずれを自動補正する機能、即ち自己セン
タリング機能を有するようにしている。In order to prevent the strip from shifting in the width direction during traveling, for example, the floater disclosed in Japanese Patent Laid-Open No. 61-261440 faces the lower surface of the strip c as shown in FIG. A flat plate portion b is horizontally provided on the upper surface of the plenum chamber a.
And the strip c on the front and rear edges of the flat plate b in the strip running direction.
A pair of slit-shaped fumaroles d that open along the width direction of the
d is opened so that gas is blown obliquely inward from the fumaroles d, d so that a static pressure region is formed between the upper surface of the flat plate portion b and the lower surface of the strip c, and The opening widths of d and d are made wider at both end portions d'compared to the center of the strip c, and a large amount of gas is blown out from the both end portions d ', so that the widthwise displacement of the strip c is automatically corrected. It has a function to perform, that is, a self-centering function.
【0004】また、特開昭61−201738号公報に
開示されたフロータは、図6に示したように帯板cの上
下に設けられたプレナムチャンバaの該帯板cとの対向
面に多数のノズルe,e,e…を帯板cの走行ラインの
中心に向けて傾斜させて設けることによりその吹出ガス
の圧力により帯板cに中心向の指向性を与え、センタリ
ング機能を有するようにしたものであった。Further, as shown in FIG. 6, the floater disclosed in Japanese Patent Laid-Open No. 61-201738 has a large number of plenum chambers a provided on the upper and lower sides of the strip c on the surface facing the strip c. Of the nozzles e, e, e ... are tilted toward the center of the running line of the strip c so that the pressure of the blown gas gives the strip c directivity toward the center and has a centering function. It was something that was done.
【0005】ところで上記のように開口幅を部分的に異
ならしめたスリット状噴気口d,dを有する装置では、
その噴気口により形成されるガスカーテンの幅が一様で
なくなるので充分な静圧力が得られないという問題があ
る。By the way, in the device having the slit-shaped jet holes d whose opening widths are partially different as described above,
There is a problem in that a sufficient static pressure cannot be obtained because the width of the gas curtain formed by the fumes is not uniform.
【0006】また、上記傾斜ノズルe,e,e…は中心
向に一様に傾斜させたものであったので、帯板cの下面
に常に中心向の指向性を一様に及ぼすものであって帯板
cがセンターライン上にあるにも拘らず左右にゆれ動い
て走行を不安定にさせるという問題があった。Further, since the inclined nozzles e, e, e ... Are inclined uniformly toward the center, the directivity in the central direction is always uniformly exerted on the lower surface of the strip c. However, there is a problem in that the belt c moves on the left and right even if the belt c is on the center line to make the running unstable.
【0007】また、一般に従来のフロータは帯板を浮揚
させるのにノズルから多量のガスを吹出す必要があるの
で、大型の送風機を備え付けねばならずそのために設備
コストが高いものになる問題がある。即ち従来のフロー
タは帯板の下面に向けて吹出したガスが帯板幅方向にす
ぐに遁れる傾向にあるので多量のガスを吹出さないと必
要とする浮揚力が得られない欠点があった。Further, in the conventional floater, it is generally necessary to blow out a large amount of gas from the nozzle in order to levitate the strip plate, so that a large blower must be provided, which causes a problem of high equipment cost. . That is, in the conventional floater, the gas blown toward the lower surface of the strip tends to immediately flow back in the width direction of the strip, so that the required levitation force cannot be obtained unless a large amount of gas is blown out. .
【0008】[0008]
【発明が解決しようとする課題】そこで本発明は、スリ
ット状の噴気口から帯板の下面に向けて吹出したガスが
帯板幅方向に遁れ難いようにして浮揚力を向上させると
共に、安定して帯板を支持できるようにするものであ
る。Therefore, the present invention improves the buoyant force by making it difficult for the gas blown from the slit-shaped fumes toward the lower surface of the strip to flow in the width direction of the strip, and at the same time, stabilizes the buoyancy. Then, the strip plate can be supported.
【0009】[0009]
【課題を解決するための手段】そのために本発明のフロ
ータは、プレナムチャンバの上面に帯板の下面と相対す
る水平な平板部を形成し、該平板部の帯板走行方向前後
縁に該帯板の幅方向に沿って開口する一対のスリット状
の噴気口をガスが夫々平板部上に向けて斜め上内方に吹
出するように開設したものであって、平板部上に***す
る定幅のバッフルを該平板部上に所定間隔を置いて複数
並設してなることを特徴とする。また本発明は上記フロ
ータに老いて、前記バッフルの上面にガスを上向に吹出
すガス吹出口を炉長方向のライン状に開設したことを特
徴とする。さらに本発明は上記フロータにおいて、ライ
ン状のガス吹出口が帯板幅方向に湾曲していることを特
徴とする。To this end, the floater of the present invention forms a horizontal flat plate portion on the upper surface of the plenum chamber facing the lower surface of the strip plate, and at the front and rear edges of the flat plate portion in the strip plate traveling direction. A pair of slit-like fumaroles that open along the width direction of the plate were opened so that the gas would blow obliquely upward inward toward the flat plate part, and a constant width that rises above the flat plate part. A plurality of baffles are arranged side by side on the flat plate portion at a predetermined interval. Further, the present invention is characterized in that the floater is aged and a gas outlet for blowing gas upward is opened in a line in the furnace length direction on the upper surface of the baffle. Furthermore, the present invention is characterized in that, in the floater, the line-shaped gas outlets are curved in the width direction of the strip.
【0010】[0010]
【発明の実施の形態】次に図1〜図4と共に本発明の実
施の形態の一例を説明する。図1に本発明に係る連続熱
処理炉を縦断面図にて示し、図2にはそのフロータの拡
大図、図3にはそのA−A線断面図、図4にそのフロー
タを斜視図にて示す。BEST MODE FOR CARRYING OUT THE INVENTION Next, an example of an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a longitudinal sectional view showing a continuous heat treatment furnace according to the present invention, FIG. 2 is an enlarged view of the floater, FIG. 3 is a sectional view taken along the line AA, and FIG. 4 is a perspective view of the floater. Show.
【0011】この連続熱処理炉では、炉床1に炉幅方向
に延びる一対の起立壁2,2をレンガ等の耐火物により
炉床1と一体的に隆設し、該起立壁2,2間にプレナム
チャンバ3を設けると共に、該起立壁2,2上にフロー
タ4を支持している。即ち、インコネル600等の耐熱
合金板からなるプレナムチャンバ3の上端部に起立壁
2,2の上端面に安定的に載置されるフランジ6を形成
し、起立壁2,2間に該プレナムチャンバ3を吊下状態
に配置し、該フランジ6の上面には薄手の超耐熱シート
7を介在させ、該超耐熱シート7上にフロータ4を乗架
している。5は炉内天井部に設けられた熱風吸引用のフ
アン、9は該フアンにより吸引した炉内の熱風をプレナ
ムチャンバ3に送給する炉内ダクト、8は炉内に設けら
れた加熱用ラジアントチューブバーナである。In this continuous heat treatment furnace, a pair of upright walls 2 and 2 extending in the width direction of the hearth 1 are integrally raised with the hearth 1 by refractories such as bricks, and the space between the upright walls 2 and 2 is raised. Is provided with a plenum chamber 3, and a floater 4 is supported on the upstanding walls 2 and 2. That is, a flange 6 that is stably placed on the upper end surfaces of the standing walls 2 and 2 is formed at the upper end of the plenum chamber 3 made of a heat-resistant alloy plate such as Inconel 600, and the plenum chamber 2 is placed between the standing walls 2 and 2. 3 is placed in a suspended state, a thin super heat resistant sheet 7 is interposed on the upper surface of the flange 6, and the floater 4 is mounted on the super heat resistant sheet 7. Reference numeral 5 is a fan for sucking hot air provided in the ceiling of the furnace, 9 is an in-furnace duct for feeding the hot air in the furnace sucked by the fan to the plenum chamber 3, and 8 is a radiant for heating provided in the furnace. It is a tube burner.
【0012】フロータ4は、帯板21の下面と相対する
水平な平板部10と、該平板部10の帯板走行方向前後
縁に設けられた一対の傾斜側板11と、該平板部10お
よび傾斜側板11を支持するための一対の起立板12と
からなり、該平板部10の帯板走行方向前後縁に該帯板
21の幅方向に沿って開口する一対のスリット状の噴気
口20がプレナムチャンバ3内のガスを夫々平板部10
上に向けて斜め上方に吹出すように開設される。なお、
これら平板部10,傾斜側板11,起立板12はニッケ
ル(Ni)を基としてこれにクロム(Cr),鉄(F
e),アルミニウム(Al),チタン(Ti)を所定量
含有させ、且つ高融点金属酸化物の微粒子を分散させて
成る材料にて形成される。すなわち、Y2O3,C
e2O3,ZrO2,Al2O3,Gd2O3,から選択された1
または2種類以上の高融点金属酸化物の微粒子或いは微
粉末を分散状態で0.1乃至2重量%含む酸化物分散強
化型合金から構成されている。この酸化物分散強化型合
金は、例えば、クロム18〜40重量%,鉄5重量%以
下,アルミニウム5重量%以下,チタン5重量%以下,
残部がニッケルから成り、そのオーステナイトマトリッ
クス中に0.1乃至2重量%の高融点金属酸化物の微粒
子が分散状態で含有された金属材料である。なお、上記
酸化物分散強化型合金は、5重量%以下のコバルト(C
o)を含有しても良い。The floater 4 includes a horizontal flat plate portion 10 facing the lower surface of the strip plate 21, a pair of inclined side plates 11 provided at front and rear edges of the flat plate portion 10 in the strip plate traveling direction, the flat plate portion 10 and the slanted plate. A pair of slit-like fumaroles 20 that are formed of a pair of upright plates 12 for supporting the side plates 11 and open along the width direction of the strip 21 are formed at the front and rear edges of the flat plate portion 10 in the strip traveling direction. The gas in the chamber 3 is supplied to the flat plate portion 10 respectively.
It is opened so that it blows up diagonally upward. In addition,
The flat plate portion 10, the inclined side plate 11, and the upright plate 12 are based on nickel (Ni), and chromium (Cr), iron (F)
e), aluminum (Al) and titanium (Ti) are contained in a predetermined amount, and fine particles of refractory metal oxide are dispersed in the material. That is, Y 2 O 3 , C
e2 O 3, Z r O 2 , Al 2 O 3, G d2 O 3, selected from 1
Alternatively, it is composed of an oxide dispersion strengthened alloy containing 0.1 to 2% by weight of fine particles or fine powders of two or more kinds of refractory metal oxides in a dispersed state. This oxide dispersion strengthened alloy is, for example, 18 to 40 wt% chromium, 5 wt% or less iron, 5 wt% or less aluminum, 5 wt% or less titanium,
The balance is nickel, and the austenite matrix is a metal material containing 0.1 to 2% by weight of fine particles of a refractory metal oxide in a dispersed state. The oxide dispersion-strengthened alloy contains 5% by weight or less of cobalt (C
o ) may be included.
【0013】こうして形成された平板部10,傾斜側板
11,起立板12は、ニッケル基合金マトリックスすな
わちオーステナイトマトリックス中において高融点金属
酸化物の微粒子が分散状態で含まれるので、高温に安定
な高融点金属酸化物の微粒子は高温の環境下でもY2O3
が2Yと3Oとに分解してその3Oがマトリックスと反
応してTiO2やAl2O3を生成せず、常温から高温に
亘って機械強度を維持し、例えば1200℃以上の高温
でも充分な強度を維持できる。Since the flat plate portion 10, the inclined side plate 11 and the upright plate 12 thus formed contain fine particles of a refractory metal oxide dispersed in a nickel-based alloy matrix, that is, an austenite matrix, they have a high melting point stable at high temperatures. Fine particles of metal oxides can generate Y 2 O 3 even in a high temperature environment.
Decomposes into 2Y and 3O, and the 3O does not react with the matrix to form TiO 2 or Al 2 O 3 and maintains mechanical strength from room temperature to high temperature, for example, even at a high temperature of 1200 ° C. or higher. Can maintain strength.
【0014】しかして、平板部10上にはカマボコ形に
***した定幅のバッフル13を所定間隔gを置いて複数
並設する。14は該バッフル13を平板部10上に止着
している止ピンである。該各バッフル13の上面には炉
幅方向に湾曲したライン状のガス吹出口15が開設さ
れ、プレナムチャンバ3内のガスが該ガス吹出口15か
らも帯板21の下面に向けて吹出すように構成されてい
る。該各バッフル13はインコネル600等の耐熱合金
により成形される。なお16は平板部10上の両側縁に
設けられた傾斜板状のガード板である。On the flat plate portion 10, a plurality of baffles 13 each having a constant width and protruding in a semi-cylindrical shape are arranged side by side at a predetermined interval g. Reference numeral 14 is a stop pin for fixing the baffle 13 to the flat plate portion 10. A line-shaped gas outlet 15 curved in the furnace width direction is provided on the upper surface of each baffle 13 so that the gas in the plenum chamber 3 is also blown toward the lower surface of the strip 21 from the gas outlet 15. Is configured. Each of the baffles 13 is formed of a heat resistant alloy such as Inconel 600. Reference numeral 16 is an inclined plate-shaped guard plate provided on both side edges of the flat plate portion 10.
【0015】このため、スリット状の噴気口20から吹
出したガスはバッフル13が邪魔となって帯板幅方向へ
移動し難くなり、該各バッフル13の間隔gにおける該
ガスの滞溜時間が長くなり該間隔gの静圧力を高めるこ
とができ浮揚力が増大する。For this reason, the gas blown out from the slit-shaped fumarole 20 becomes difficult to move in the width direction of the strip due to the baffle 13 obstructing the gas, and the staying time of the gas at the interval g between the baffles 13 is long. Therefore, the static pressure of the gap g can be increased and the levitation force is increased.
【0016】また、ガス吹出口15より吹出すガスは帯
板21を浮揚させるのに直接作用するほか、ガスカーテ
ンとして作用し、間隔gのガスの幅方向移動をさらに難
しくするので、浮揚力を増大させるのにさらに有効的で
ある。なおガス吹出口15は、図4に示したように、帯
板21の幅方向に湾曲した形態に形成したことにより、
幅寸法が種々異なる帯板21を搬送する場合においてそ
の帯板21の両側縁に対して該ガス吹出口15から吹出
すガスを均等に当てることができるようになり、走行を
安定させる。また、ガス吹出口15の形態は図4に示し
たものに限らず例えばV字状(く字状)に湾曲した形態
であってもよいし、湾曲の向きは図4のように外側に湾
曲していてもよいし、内側に湾曲していてもよい。Further, the gas blown out from the gas outlet 15 directly acts to levitate the strip 21 and also acts as a gas curtain, making it more difficult to move the gas at the interval g in the width direction. It is more effective to increase. As shown in FIG. 4, the gas outlet 15 is formed in a shape curved in the width direction of the strip plate 21.
When the strips 21 having different widths are conveyed, the gas blown out from the gas outlets 15 can be evenly applied to both side edges of the strip 21 to stabilize the traveling. Further, the shape of the gas outlet 15 is not limited to that shown in FIG. 4, and may be, for example, a V-shaped (V-shaped) curved shape, and the curved direction is curved outward as shown in FIG. It may be curved or curved inward.
【0017】[0017]
【発明の効果】このように本発明のフロータは、平板部
上にバッフルを所定間隔を置いて複数並設したことによ
り、スリット状の噴気口から吹出したガスの帯板幅方向
への移動が制限され、平板部上におけるガスの滞溜時間
を長くできるので、その静圧力が高くなり、帯板の浮揚
力を増大させ、しいては走行を安定させることができる
効果がある。As described above, in the floater of the present invention, the plurality of baffles are arranged side by side on the flat plate portion at a predetermined interval, so that the gas blown out from the slit-shaped fumes can be moved in the width direction of the strip plate. Since the gas retention time is limited and the gas retention time on the flat plate portion can be lengthened, the static pressure is increased, the floating force of the strip plate is increased, and the traveling is stabilized.
【図1】本発明に係るフロータの実施の形態を示した連
続熱処理炉の縦断面図。FIG. 1 is a vertical cross-sectional view of a continuous heat treatment furnace showing an embodiment of a floater according to the present invention.
【図2】図1の要部の拡大図。FIG. 2 is an enlarged view of a main part of FIG.
【図3】図2のA−A線断面図。FIG. 3 is a sectional view taken along line AA of FIG. 2;
【図4】本発明に係るフロータの斜視図。FIG. 4 is a perspective view of a floater according to the present invention.
【図5】従来のフロータの斜視図。FIG. 5 is a perspective view of a conventional floater.
【図6】従来のフロータの縦断面図。FIG. 6 is a vertical sectional view of a conventional floater.
3 プレナムチャンバ 4 フロータ 10 平板部 11 傾斜側板 12 起立板 13 バッフル 15 ガス吹出口 20 噴気口 21 帯板 g 間隔 3 Plenum chamber 4 Floater 10 Flat plate part 11 Inclined side plate 12 Standing plate 13 Baffle 15 Gas blowout port 20 Fume nozzle 21 Strip plate g Interval
Claims (3)
相対する水平な平板部を形成し、該平板部の帯板走行方
向前後縁に該帯板の幅方向に沿って開口する一対のスリ
ット状の噴気口をガスが夫々平板部上に向けて斜め上内
方に吹出するように開設したものであって、平板部上に
***する定幅のバッフルを該平板部上に所定間隔を置い
て複数並設してなることを特徴とするフロータ。1. A pair of slits formed on the upper surface of the plenum chamber so as to face the lower surface of the strip plate, and at the front and rear edges of the flat plate portion in the traveling direction of the strip plate along the width direction of the strip plate. -Like fumaroles were opened so that the gas was blown obliquely upward and inward toward the flat plate portion, and baffles of constant width that bulge on the flat plate portion are arranged at a predetermined interval on the flat plate portion. A floater characterized by being arranged in parallel.
すガス吹出口を炉長方向のライン状に開設したことを特
徴とする請求項1に記載のフロータ。2. The floater according to claim 1, wherein a gas outlet for blowing gas upward is provided on the upper surface of the baffle in a line in the furnace length direction.
曲していることを特徴とした請求項2に記載のフロー
タ。3. The floater according to claim 2, wherein the line-shaped gas outlet is curved in the width direction of the strip plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31481195A JPH09125162A (en) | 1995-11-07 | 1995-11-07 | Floater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31481195A JPH09125162A (en) | 1995-11-07 | 1995-11-07 | Floater |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09125162A true JPH09125162A (en) | 1997-05-13 |
Family
ID=18057890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP31481195A Pending JPH09125162A (en) | 1995-11-07 | 1995-11-07 | Floater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09125162A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017132476A1 (en) * | 2016-01-29 | 2017-08-03 | Corning Incorporated | Thermally treated metallic materials and related methods |
-
1995
- 1995-11-07 JP JP31481195A patent/JPH09125162A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017132476A1 (en) * | 2016-01-29 | 2017-08-03 | Corning Incorporated | Thermally treated metallic materials and related methods |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0068272B1 (en) | Apparatus for conveying strip material | |
JP3217176B2 (en) | Method and apparatus for manufacturing float glass | |
JPH09125162A (en) | Floater | |
JP3395336B2 (en) | Strip levitation support device | |
JP2953883B2 (en) | Method of transporting steel strip by floater | |
JP4268281B2 (en) | Horizontal bright continuous annealing furnace for metal strip | |
JPH07285718A (en) | Strip floating and supporting device | |
JPH07233422A (en) | Float-supporting device for strip | |
JPH07252535A (en) | Heat treatment furnace for metal strip and heat treatment method | |
WO2021059808A1 (en) | Snout sealing device | |
JPH07242952A (en) | Device for floating up and supporting strip | |
JP3843475B2 (en) | Hot air blowing furnace | |
JPH07291499A (en) | Floating support device for band material | |
JP3285384B2 (en) | Continuous conveying hot air vulcanizer | |
JP3840679B2 (en) | Furnace internal structure | |
JP2781537B2 (en) | Atmospheric circulation type heat treatment furnace | |
JPH07252537A (en) | Device for straightening metal strip | |
JPS624836A (en) | Floating and supporting device for belt-like material | |
JPS6140733B2 (en) | ||
JPH10109058A (en) | Continuous drying method of belt-like material | |
KR930002637B1 (en) | Frame for supporting a glass sheet during tempering | |
JPH03260023A (en) | Continuous annealing furnace of sheet metal | |
JPS61261440A (en) | Floater for supporting strip | |
JPS63169337A (en) | Floater for supporting strip | |
JPH10287437A (en) | Heating furnace |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060815 |
|
A02 | Decision of refusal |
Effective date: 20070417 Free format text: JAPANESE INTERMEDIATE CODE: A02 |