JPS59113127A - Method and device for floating strip stably in floating furnace - Google Patents

Method and device for floating strip stably in floating furnace

Info

Publication number
JPS59113127A
JPS59113127A JP22138882A JP22138882A JPS59113127A JP S59113127 A JPS59113127 A JP S59113127A JP 22138882 A JP22138882 A JP 22138882A JP 22138882 A JP22138882 A JP 22138882A JP S59113127 A JPS59113127 A JP S59113127A
Authority
JP
Japan
Prior art keywords
strip
furnace
center
floating
line
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
Application number
JP22138882A
Other languages
Japanese (ja)
Inventor
Morohei Sakaguchi
阪口 諸平
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP22138882A priority Critical patent/JPS59113127A/en
Publication of JPS59113127A publication Critical patent/JPS59113127A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54Furnaces for treating strips or wire
    • C21D9/56Continuous furnaces for strip or wire
    • C21D9/63Continuous furnaces for strip or wire the strip being supported by a cushion of gas

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)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE:To float stably a strip passing in a floating furnace for heating the strip by inclining the injection direction of the high temp. gas jets from the lower part of the furnace toward the center of the line. CONSTITUTION:Upper and lower injection boxes 41, 51 for gaseous jets are curved to curve the space in which a strip S passes into a downward projecting shape in the stage of floating the strip S by the high temp. gaseous jets ejected from the top and bottom in a floating furnace 1 and heat treating the strip while moving the same. The opposed surfaces of both boxes 41, 51, that is, the surfaces provided with nozzles 61, 71 for injecting high temp. gas are formed to an arced face having the center of a circle above the center of the line. If the strip S floated by the high temp. gas injected from the upper and lower nozzles 61, 71 moves obliquely to the right or left from the center of the line, the strip is pushed back to the central part by the horizontal component of force of the high temp. jet gas from the lower nozzles 71, so that the strip travels always stably, in the central part of the line.

Description

【発明の詳細な説明】 プの安定浮揚方法とその装置に関するものである。[Detailed description of the invention] This paper relates to a stable levitation method and device.

ストリップの熱処理に用いる連続熱処理炉の1つに、連
続して流れるストリップへ高温ガスジェットを吹き付け
て、そのストリップを浮揚させると共に加熱するいわゆ
るフローテイング炉がある。
One type of continuous heat treatment furnace used for heat treating strip is a so-called floating furnace in which a jet of hot gas is blown onto the continuously flowing strip to levitate and heat the strip.

このフローテイング炉は、炉中で支持ローラ等を用いな
いので、熱処理中の高温状態にあるストリップが支持ロ
ーラ等へ接触することによって損傷を受けることがなく
、損傷を受は易い胴やアルミニウム等のストリップの焼
鈍の場合に好んで使用されており、例えば、第1図,第
2図の如き構成を備えている。
Since this floating furnace does not use support rollers, etc. in the furnace, the strip, which is in a high temperature state during heat treatment, will not be damaged by contact with the support rollers, etc., and the shell, aluminum, etc., which are easily damaged, will not be damaged. It is preferably used in the case of annealing strips, and has a configuration as shown in FIGS. 1 and 2, for example.

第1図は、フローティング炉の構成要領を示す裁断側面
図、第2図は、炉内要部の拡大正面図であり、図におい
て、1は、炉体、2は、炉体前面の入口、3は、炉体後
面の出口、4,5は、炉内の上下に配したガスジェット
噴出箱、6・・・、7・・・は、両ガスジェット噴出箱
の対向面に配列した多数の高温ガスジェット噴出用ノズ
ル、8.9は、炉外の上記人口2及び出口3の近傍に設
けたガイトローラである。
Fig. 1 is a cutaway side view showing the configuration of the floating furnace, and Fig. 2 is an enlarged front view of the main parts inside the furnace. 3 is an outlet on the rear surface of the furnace body, 4 and 5 are gas jet ejection boxes arranged above and below inside the furnace, and 6..., 7... are a large number of gas jet ejection boxes arranged on the opposing surfaces of both gas jet ejection boxes. The high temperature gas jet ejection nozzle 8.9 is a guide roller provided near the above-mentioned port 2 and outlet 3 outside the furnace.

而して、ストリップSは、入口側のガイドローラ8を経
て炉内に入り、ガスジェット噴出箱4゜5からの高温ガ
スジェットを受けて、浮揚と共に熱処理され、出口側の
ガイドローラを経て送り出される。
The strip S enters the furnace through the guide roller 8 on the inlet side, receives a high-temperature gas jet from the gas jet ejection box 4.5, is floated and heat treated, and is sent out through the guide roller on the outlet side. It will be done.

また、両ガスジェット噴出箱4,50対向する多数のノ
ズル6・・・、7・・・は、いずれも水平面内にあって
垂直方向に高温ガスジェットを噴出し、上下双方からの
噴出でス) IJツブの浮揚の安定性を図っている。
In addition, the numerous nozzles 6..., 7... facing each other in both gas jet ejection boxes 4, 50 are all located in a horizontal plane and eject high temperature gas jets in the vertical direction. ) The stability of the levitation of the IJ knob is aimed at.

しかしながら、従来のものでは、その安定性は未だ不十
分であり、ガイドローラ間の距離(炉長)が長くなるほ
ど、また、ストリップに加わるテンションが弱いほど、
ストリップは不安定となり、特に炉の中央部で最も大き
く左右に揺動(斜行)する。
However, the stability of the conventional method is still insufficient, and the longer the distance between the guide rollers (furnace length) and the weaker the tension applied to the strip, the lower the
The strip becomes unstable, especially in the center of the furnace, where it swings from side to side (diagonally).

これを防止するには、ストリップのテンションを強くし
て行うこともできるが、ストリップに許容されるテンシ
ョンは、加熱中の変形(伸び)を防ぐ必要から自ら限度
があり、ス) IJツブが薄くなればなるほど弱くせね
ばならず、また、炉長が長くなればなるほど働きが低減
するので、困難になる。
To prevent this, it is possible to increase the tension of the strip, but there is a limit to the tension allowed for the strip due to the need to prevent deformation (elongation) during heating. The longer the length of the furnace, the weaker it must be, and the longer the length of the furnace, the less work it will do, making it more difficult.

本発明は、斯る従来の欠点を除去しようとするものであ
り、炉内下部から上方へと噴射させる高温ガスジェット
の噴射方向を、ライン中心へ向は傾倒させ、該高温ガス
ジェットの力を利用してストリップをライン中心に位置
保持させるようにしたものである。
The present invention aims to eliminate such conventional drawbacks by tilting the injection direction of the high-temperature gas jet upward from the lower part of the furnace toward the center of the line, thereby reducing the force of the high-temperature gas jet. This is used to hold the strip at the center of the line.

以下、図示の実施例について説明する。The illustrated embodiment will be described below.

第3図は、その−例であり、上記第1図、第2図の70
−テイング炉において、上下のガスジェット噴出箱を彎
曲させて、相互間の空間aを正面から見て下に凸の彎曲
状態にしている。
Figure 3 is an example of this, and 70 in Figures 1 and 2 above.
- In a Teing furnace, the upper and lower gas jet ejection boxes are curved, so that the space a between them is curved in a downwardly convex manner when viewed from the front.

つ壕り、上下のガスジェット噴出箱4]、 、 5]の
対向面すなわちノズル面を、正面形状においてライン中
心の上方に円中心をおく円弧面に形成させて、ノズル6
1・・・、71・・・の方向をそれぞれその円中心に対
応させている。
The opposing surfaces of the upper and lower gas jet ejection boxes 4], , 5] are formed into arcuate surfaces with the center of the circle above the line center in the front shape, and the nozzle 6
The directions 1..., 71... are respectively made to correspond to the center of the circle.

(3) 如上の構成であるから、ス) 17ツプSは、上下のガ
スジェット噴出箱41 、51の間でそれぞれのノズル
61・・、71・・・から出る高温ガスジェットにより
浮揚されると共に加熱される。
(3) Since the above configuration is as follows, the 17 sp. It is heated with.

この際の噴出ガス量は、浮揚すべきストリップSの厚み
すなわちストリップの単位面積当りの重量に応じて決定
され、下部より噴出するガス量を多くしてストリップS
を適当な高さに浮揚させるよう設定される。
The amount of gas ejected at this time is determined according to the thickness of the strip S to be levitated, that is, the weight per unit area of the strip, and the amount of gas ejected from the lower part is increased to
is set to levitate to an appropriate height.

斯様に浮揚されたス) IJツブSは、普段、ライン中
央に位置しているが、左右に斜行したときは、下のガス
ジェット噴出箱51のノズル面が彎曲して、ノズル71
・・・がライン中心へ向けそして縁部に近づくほど大き
く傾倒し、噴出する高温ガスジェットも共に傾倒してい
るので、該高温ガスジェットの水平分力によってストリ
ップはライン中心へ向けて押し戻さnlその力は、斜行
が大きくなればなるほど大きくなって速かに押し戻され
る。
The IJ tube S, which is levitated in this way, is normally located in the center of the line, but when it moves obliquely to the left or right, the nozzle surface of the lower gas jet ejection box 51 is curved, and the nozzle 71
... is tilted toward the center of the line, and the closer it gets to the edge, the more the strip is tilted, and the ejected hot gas jet is also tilted, so the horizontal component of the hot gas jet pushes the strip back toward the center of the line. The greater the skew, the greater the force and the faster the force is pushed back.

なお、ノズルは、円形や多角形でもスリットでもよく、
或いは、それらの組み合わせでもよい。
Note that the nozzle may be circular, polygonal, or slit.
Alternatively, a combination thereof may be used.

(4) 次に、第4図、第5図は、他の例であり、この場合は、
前例の上下のガスジェット噴出箱に代えて管体から成る
複数のノズルヘッダー10・・・、11・・・を用いる
(4) Next, Figures 4 and 5 are other examples; in this case,
In place of the upper and lower gas jet ejection boxes of the previous example, a plurality of nozzle headers 10..., 11... made of tubular bodies are used.

上のノズルヘッダー10・・・は、炉内の入口2付近と
出口3付近とにライン方向に直交させて小数並設し、下
のノズルヘッダー11・・・は、炉内全域にライン方向
に直交させて等間隔で多数並設して、図示してないがそ
れぞれ高温ガス源へ接続しており、上のノズルヘッダー
10・・・には下面に、下のノズルヘッダー11・・・
には上面に、それぞれ等間隔にノズル12・・・を配列
して、該ノズルから高温ガスジェットを噴出するように
している。
The upper nozzle headers 10... are arranged in small numbers in parallel in the line direction near the inlet 2 and the outlet 3, and the lower nozzle headers 11... are arranged in the line direction throughout the entire area inside the furnace. A large number of nozzle headers 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, and 11 are arranged orthogonally and at equal intervals.
Nozzles 12 are arranged at equal intervals on the top surface of the device, and a high-temperature gas jet is ejected from the nozzles.

更ニ、下のノズルヘッダー11・・・の左右両端部をθ
−5°〜10°の角度で折り上げて、該端部にあるノズ
ル12・・・をライン中心へ向は傾倒させている。
Furthermore, the left and right ends of the lower nozzle header 11...
It is folded up at an angle of -5° to 10°, and the nozzles 12 at the ends are tilted toward the center of the line.

なお、この折り上げは、両端から少なくとも10優位の
長さになるのが望ましい。また、円弧状に屈曲させても
よい。
Note that this folding is preferably at least 10 lengths from both ends. Further, it may be bent in an arc shape.

図中、13は、炉外出口側に設けた冷却ノズルである。In the figure, 13 is a cooling nozzle provided on the outlet side of the furnace.

如上の構成であるから、この場合も前例と同様tcl、
−’?1m、ノズルヘッダー10・・・、]1・・・か
らの高温ガスジェットによりストリップSの浮揚と加熱
とが得られ、且つ、斜行に対する押し戻しが得られる。
Since the configuration is as shown above, in this case as well, tcl,
-'? 1m, the high temperature gas jets from the nozzle headers 10...,]1... levitate and heat the strip S, and also push it back against skew.

面シて、特に、上のノズルヘッダー10・・・を炉内の
入日付近と出口付近の小数にとどめているので、浮上抑
制力が小さくなり、高温ガスジェットのガス量を約%以
下に減少でき、1000 Cを超える高温炉において熱
処理コストを著しく低減できる。
In particular, since the number of upper nozzle headers 10 is kept to a decimal number near the entrance and exit of the furnace, the floatation suppressing force is small, and the gas amount of the high-temperature gas jet is reduced to about % or less. The heat treatment cost can be significantly reduced in a high temperature furnace exceeding 1000C.

本発明によれば、炉内下部から上方へ噴射する高温ガス
ジェットがライン中心へ向は傾倒しているので、該高温
ガスジェットの水平分力をストリップのライン中心での
位置保持力に利用でき、ストリップを常にライン中心に
安定に保持でき、左右への揺動(斜行)を阻止できる。
According to the present invention, since the high-temperature gas jet injected upward from the lower part of the furnace is tilted toward the center of the line, the horizontal force of the high-temperature gas jet can be used to maintain the position of the strip at the center of the line. , the strip can always be stably held in the center of the line and can be prevented from swinging from side to side (skewing).

構造が極めて簡単で頗る有益である。The structure is extremely simple and extremely useful.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、従来のフローティング炉の構成要領を示す裁
断側面図、第2図は、同炉内の要部の拡大正面図、第3
図は、本発明の一実施例を示す炉内要部の拡大正面図、
第4図は、他の実施例のフローティング炉の構成要領を
示す裁断側面図、第5図は、回倒の炉内要部の拡大正面
図である。 ■・・・炉 体     2・・・入 口;3・・・出
  口     4,5・・・ガスジェット噴出箱6.
7・・・ノズル    8,9・・・ガイドローラ41
 、51・・・ガスジェット噴出箱 61 、71・・
・ノズル10.11・・・ノズルヘッダー  12・・
・ノズルS・・・ストリップ 特許出願人  川崎製鉄株式会社
Figure 1 is a cutaway side view showing the configuration of a conventional floating furnace, Figure 2 is an enlarged front view of the main parts inside the furnace, and Figure 3 is an enlarged front view of the main parts inside the furnace.
The figure is an enlarged front view of the main parts inside the furnace showing one embodiment of the present invention.
FIG. 4 is a cutaway side view showing the configuration of a floating furnace according to another embodiment, and FIG. 5 is an enlarged front view of the main parts inside the rotating furnace. ■... Furnace body 2... Inlet; 3... Outlet 4, 5... Gas jet ejection box 6.
7... Nozzle 8, 9... Guide roller 41
, 51... Gas jet ejection box 61, 71...
・Nozzle 10.11... Nozzle header 12...
・Nozzle S...Strip patent applicant Kawasaki Steel Corporation

Claims (2)

【特許請求の範囲】[Claims] (1)炉内下部から上方へと噴射してストリップを浮揚
させると共に加熱する高温ガスジェットの噴射方向を、
ライン中心へ向は傾倒させ、該高温ガスジェットの水平
分力を利用してストリップをライン中心に位置保持させ
ることを特徴とするフローティング炉におけるストリッ
プの安定浮揚方法。
(1) The injection direction of the high-temperature gas jet is injected upward from the bottom of the furnace to levitate and heat the strip.
1. A method for stably floating a strip in a floating furnace, comprising tilting the strip toward the center of the line and using the horizontal force of the high-temperature gas jet to hold the strip at the center of the line.
(2)炉内下部に設けられ且つ上面に複数のノズル゛を
配列して上方へと高温ガスジェットを噴射するガスジェ
ット噴出箱捷たはノズルへラダーにおいて、上方に面す
るノズル面を左右両側で上方へ屈曲させて、ノズルの噴
射方向をライン中心へ向けて傾倒させたことを特徴とす
るフローティング炉におけるストリップの安定浮揚装置
(2) In the gas jet ejection box or nozzle ladder, which is installed in the lower part of the furnace and has multiple nozzles arranged on the upper surface to inject a high-temperature gas jet upward, the nozzle surface facing upward is placed on both the left and right sides. 1. A device for stably floating a strip in a floating furnace, characterized in that the nozzle is bent upward and the jetting direction of the nozzle is tilted toward the center of the line.
JP22138882A 1982-12-17 1982-12-17 Method and device for floating strip stably in floating furnace Pending JPS59113127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22138882A JPS59113127A (en) 1982-12-17 1982-12-17 Method and device for floating strip stably in floating furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22138882A JPS59113127A (en) 1982-12-17 1982-12-17 Method and device for floating strip stably in floating furnace

Publications (1)

Publication Number Publication Date
JPS59113127A true JPS59113127A (en) 1984-06-29

Family

ID=16765986

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22138882A Pending JPS59113127A (en) 1982-12-17 1982-12-17 Method and device for floating strip stably in floating furnace

Country Status (1)

Country Link
JP (1) JPS59113127A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192169A2 (en) * 1985-02-15 1986-08-27 Otto Junker GmbH Device for the contactless guiding of material webs, in particular metal webs, by means of a gas
WO2017132476A1 (en) * 2016-01-29 2017-08-03 Corning Incorporated Thermally treated metallic materials and related methods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192169A2 (en) * 1985-02-15 1986-08-27 Otto Junker GmbH Device for the contactless guiding of material webs, in particular metal webs, by means of a gas
WO2017132476A1 (en) * 2016-01-29 2017-08-03 Corning Incorporated Thermally treated metallic materials and related methods

Similar Documents

Publication Publication Date Title
JPS59113127A (en) Method and device for floating strip stably in floating furnace
KR100259242B1 (en) Floatation type pressure pad for metal strip
JP2953883B2 (en) Method of transporting steel strip by floater
JP3395336B2 (en) Strip levitation support device
JPS6212292B2 (en)
JP5975237B2 (en) Belt-like body transport device and transport method
US4106757A (en) Hover furnaces
JPS62235429A (en) Centering apparatus for metal strip material in floating type heat treating furnace
JPS63143227A (en) Floating and supporting device for changing direction of traveling steel strip
JP2895387B2 (en) Strip conveyor
JP2544579B2 (en) Strip floating pressure pad
JPH0432449A (en) Band plate travel direction changing gas supporting device
JP2750104B2 (en) Pressure pad for strip levitation support
KR200227182Y1 (en) Air leveling device for turning the strip
JPH0437892Y2 (en)
JPH07233422A (en) Float-supporting device for strip
JP2655785B2 (en) Non-contact transport device
JP2022081450A (en) Treatment device for flexible belt-like material passing through the inside of treatment furnace, in particular, resin thin film
JPH07285718A (en) Strip floating and supporting device
KR20240126347A (en) Secondary battery electrode drying device with driving stabilization function
JPH0448033A (en) Vertical type bright annealing furnace and annealing method for stainless steel band plate
JPS61261440A (en) Floater for supporting strip
JPS624836A (en) Floating and supporting device for belt-like material
JPS60184638A (en) Continuous annealing furnace for strip
JPH06179553A (en) Non-contact supporting device of sheet