JPS60235731A - Manufacture of float glass - Google Patents
Manufacture of float glassInfo
- Publication number
- JPS60235731A JPS60235731A JP9022184A JP9022184A JPS60235731A JP S60235731 A JPS60235731 A JP S60235731A JP 9022184 A JP9022184 A JP 9022184A JP 9022184 A JP9022184 A JP 9022184A JP S60235731 A JPS60235731 A JP S60235731A
- Authority
- JP
- Japan
- Prior art keywords
- bath
- end wall
- molten metal
- bathtub
- outlet end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/16—Construction of the float tank; Use of material for the float tank; Coating or protection of the tank wall
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/18—Controlling or regulating the temperature of the float bath; Composition or purification of the float bath
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
Abstract
Description
【発明の詳細な説明】 本発明はフロートカラスの製ｉＢ法に関する。[Detailed description of the invention] The present invention relates to an iB method for manufacturing float crow.
フロートυ、によるモ坦なカラスの製造プロセスにおい
ては 充分高温の溶融カラスをススからなる溶融金属浴
ｌ二に送入し、浴の表面に沿ってリボンの形体で１７か
前進さ上表面を平滑化させ、冷却させた後浴より搬出し
徐冷窯へ送る。In the process of manufacturing smooth glass using a float, molten glass at a sufficiently high temperature is introduced into a molten metal bath consisting of soot, and the upper surface is smoothed by advancing it in the form of a ribbon along the surface of the bath. After cooling, it is taken out of the bath and sent to a slow cooling kiln.
溶融金属浴は耐火物製の細長い槽に収容され、浴のに部
重間にはＪ１酸化性のカス、一般には窒素と水素の混合
カスが提供され金属の醇化を防１］−する。The molten metal bath is contained in a long, narrow tank made of refractory material, and J1 oxidizing scum, generally a mixed scum of nitrogen and hydrogen, is provided between the parts of the bath to prevent the metal from becoming liquefied.
ガラスリボンは溶融金属浴１−で所望の・Ｊ法を（＝１
ダーされ、平滑化された後浴槽の出口端付近で１一方に
曲げられ、出口端後方に設けられた通常リフトアウトロ
ールと呼ばれるロールによって徐冷窯へ向けて搬送され
る。カラスリボンは、浴から離れる際にはロールとの接
触によって傷つけられない程度に冷却されていなければ
ならない反面、■一方へ曲げられる程度の可塑性を必要
とする。この両方の要求により、従来カラスリボンは１
１目１端で約６００〜６５０℃の温度で浴槽より搬出さ
れる。The glass ribbon is heated in a molten metal bath 1- by the desired J method (=1
After being smoothed and smoothed, it is bent to one side near the outlet end of the bathtub and conveyed to the slow cooling kiln by rolls usually called lift-out rolls provided behind the outlet end. When the glass ribbon leaves the bath, it must be cooled to such an extent that it will not be damaged by contact with the rolls, but on the other hand, it must have enough plasticity to bend in one direction. Due to both of these requirements, the conventional crow ribbon is
It is carried out from the bathtub at a temperature of approximately 600 to 650°C at each end.
しかしなから、約６００℃の温度のりフトアウ）・では
カラスリボンのＦ面がロールとの接触により［ローラー
インプリントＪと呼ばれる欠点即ちロール表面の凹凸か
カラスに転写され凹凸か刻み込まれる欠点が生じ、カラ
スリボンの平１１１１＾を低ドさせる。リフトアウトの
際のカラスリボンの温度を低下させると、リフトアウト
の際カラスリボンに亀裂が発生したり、破断が生し 操
業の中断を招く。However, at a temperature of about 600°C (foot-out), the F side of the crow ribbon comes into contact with the roll, causing a defect called roller imprint J, that is, the unevenness of the roll surface is transferred to the crow and the unevenness or imprint is engraved. , lower the flat 1111^ of the crow ribbon. If the temperature of the crow ribbon is lowered during lift-out, the crow ribbon may crack or break during lift-out, resulting in interruption of operations.
本発明の目的は、以ヒの如き難点を解消する溶融金属浴
のレベルとリフトアウトロールのレベルを一致させ、カ
ラスリボンを上方へ曲げることなく水平に浴槽より搬出
できるようにして、ｌ−記難点を解決するとＪ（に、浴
に１ニジｌ流を形成し溶融金属の酸化物であるドロスが
ガラスリボンに３付着し難いフロートカラスの製造法の
提供を目的とする。The object of the present invention is to eliminate the following difficulties by making the level of the molten metal bath coincide with the level of the lift-out roll, and by making it possible to carry out the crow ribbon horizontally from the bath without bending it upwards. The purpose of the present invention is to provide a method for producing a float glass in which a flow is formed in the bath and dross, which is an oxide of molten metal, is difficult to adhere to the glass ribbon.
即ち、本発明は、浴槽に収容した溶融金属の水平な浴面
に沿ってガラスリボンを移送し、浴槽の出口端壁１一方
を６して連続的に浴槽より搬出するフロートカラスの製
造方法において、該浴面を浴槽の出口端壁より高くし出
口端壁近傍の浴に１−流方向へ向う電磁作用による推力
を印加し出【」端壁からの溶融金属の流出を防ぐとバに
出口端壁近傍の浴に上昇流を形成し、ガラスリボンを浴
槽よりほぼ水平に引出すことを特徴とするフロートガラ
スの製造法である。That is, the present invention provides a method for manufacturing a float glass, in which a glass ribbon is transferred along a horizontal bath surface of molten metal contained in a bathtub, one side of the outlet end wall 1 of the bathtub is 6, and the glass ribbon is continuously carried out from the bathtub. , the bath surface is made higher than the outlet end wall of the bathtub, and a thrust due to electromagnetic action in the flow direction is applied to the bath near the outlet end wall to prevent the molten metal from flowing out from the end wall. This method of manufacturing float glass is characterized by forming an upward flow in the bath near the end wall and pulling out the glass ribbon almost horizontally from the bath.
本発明によればカラスリボンは、浴槽よりほぼ水平に引
出されるので充分に冷却された状態でロールと接触すう
ことができる。それ故ローラインプリント等の表面欠点
を生ずる恐れはない、また、出口端壁近傍の浴には、底
部から浴面に向う−に昇流が形成されているので、この
浴面には常に不純物を含まない新鮮な溶融金属が供給さ
れ、この浴面１−を通過するガラスリボンにドロス等の
不純物が付着する恐れはない。According to the present invention, the crow ribbon is pulled out from the bathtub almost horizontally, so that it can come into contact with the roll in a sufficiently cooled state. Therefore, there is no risk of surface defects such as low line prints.Also, since an upward flow is formed in the bath near the outlet end wall from the bottom toward the bath surface, this bath surface is always free of impurities. Fresh molten metal containing no molten metal is supplied, and there is no fear that impurities such as dross will adhere to the glass ribbon passing through the bath surface 1-.
未発明においては、浴槽出口端壁近傍の溶融金属は、底
部からＬ ＭするとＪ（に側壁方向に沿っても流動し、
更に側壁に沿って上流方向（即ち、リボンの進行方向と
逆方向）に流動する。ドロスと称される溶融金属の酸化
物は、この側壁に沿う金属波によって流動し、通常その
途中に設けたドロス補集手段に捕捉され、清浄な溶融金
属となり槽内を循環する。In the uninvention, the molten metal near the end wall of the bathtub outlet flows from the bottom along the side wall direction,
It also flows in an upstream direction (ie, in a direction opposite to the direction of ribbon travel) along the sidewall. Oxide of the molten metal, called dross, flows by the metal waves along the side wall, is usually captured by a dross collecting means provided along the way, and becomes clean molten metal, which circulates within the tank.
浴面より低いレベルに設けられた浴槽の出［」端壁から
の溶融金属の流出は、出口端壁近傍の浴面１．の設けた
リニアインダクションモーターにより溶融金属に印加さ
れる上流方向への推力によって防市される。また、出目
端壁近傍の溶融金属にｌ−Ｎ ｌを形成する方法として
は、後記実施態様で示す方法か具体例として挙げられる
。The outflow of molten metal from the outlet end wall of the bathtub, which is located at a lower level than the bath surface, occurs at the bath surface 1. near the outlet end wall. The molten metal is blown away by the upstream thrust applied to the molten metal by a linear induction motor. Further, as a method for forming l-Nl in the molten metal near the exposed end wall, the method shown in the embodiment described later or a specific example may be mentioned.
以下、図面に基づいて説明する。The following will explain based on the drawings.
第１図は本発明を実施するのに適した装置の縦断面図で
あり、第２図は第１図のＡＡ断面図であり、第３図は別
の態様の装置である。FIG. 1 is a longitudinal sectional view of an apparatus suitable for carrying out the invention, FIG. 2 is a sectional view along line AA of FIG. 1, and FIG. 3 is a different embodiment of the apparatus.
図のように浴槽ｌに収容された溶融金属浴２の浴面ば、
浴槽の出口端壁より高いレベルになるようにそのｌ一方
に設けたリニアイングクンヨンモーターによって保持さ
れている。浴面トで所定厚さ及びＩ＋］に形成されたカ
ラスリホン５は浴面に沿って矢印の方向に進行し、浴槽
に出「１端壁り力を通してほぼ水（ｉ状態でローラ６．
７に搬出される。As shown in the figure, the surface of the molten metal bath 2 housed in the bathtub l is
It is held by a linear motor installed on one side of the bathtub so that it is at a higher level than the outlet end wall of the bathtub. The crow ring 5, which has been formed to a predetermined thickness and I+] on the bath surface, moves along the bath surface in the direction of the arrow and exits the bathtub.
It will be carried out on 7th.
リニアインタクションモーターは、実父）１１’１５０
−３１８４６号に開示される如く、フロートカラスの製
造装置において溶融金属に誘導型ｍ作用による推力を与
えこれを流動させるため従来から用いられている。リニ
アインタクションモーター４は、図に示される如く、！
行な多他のリムを有する鉄心８、そのリムを巻いた中空
鋼管からなるコイル９からなり、全体が耐火物中に収容
されている。中空管のコイル中を冷却水が循環される。Linear interaction motor is real father) 11'150
As disclosed in Japanese Patent Application No. 31,846, it has been conventionally used in a float crow manufacturing apparatus to apply a thrust to molten metal by an induced m action to cause it to flow. The linear interaction motor 4 is as shown in the figure!
It consists of an iron core 8 having many different rims, and a coil 9 made of a hollow steel tube wound around the rim, and the whole is housed in a refractory. Cooling water is circulated through the coils of hollow tubes.
この複数のコイルを順次励磁することによって移動磁界
を形成する。リニアインタクションモーター近傍の溶融
金属浴には前記移動磁界によって電流が誘導され、この
電流によって磁界が形成される。溶融金属には内部に発
生した磁界とコイルにより発生した移動磁界との作用に
よって移動磁界の移動方向に推力が発生する。A moving magnetic field is formed by sequentially exciting the plurality of coils. A current is induced in the molten metal bath near the linear interaction motor by the moving magnetic field, and a magnetic field is formed by this current. A thrust is generated in the molten metal in the moving direction of the moving magnetic field due to the action of the internally generated magnetic field and the moving magnetic field generated by the coil.
リニアインタクシ鳶ンモーターを、浴の出口（＝１近の
ガラスリボンの上方にガラスリボンに近接して配置し、
溶融金属に対して浴のＬ流方向即ちガラスリボンの進行
方向と逆方向の誘導電磁作用による推力を付与すること
により、出口部の溶融金属面に出目端より上向きの勾配
を有する浴面を形成する。A linear taxi motor is placed above the glass ribbon near the bath outlet (=1) and close to the glass ribbon,
By applying a thrust force to the molten metal by induced electromagnetic action in the L flow direction of the bath, that is, in the direction opposite to the direction of movement of the glass ribbon, the molten metal surface at the outlet part has a slope upward from the exposed end. Form.
ｆｔ５２図の如く、側壁の内側には、溶融金属に比して
電気伝導度の優れた直方体状の導体１０が浴に浸漬して
設けてあり、リニアイングクションモーターの鉄心は、
この導体の上方にまで設けである。かかる導体を設けな
いで絶縁体である耐火物で側壁を構成するとリニアイン
ダクションモーターによる推力は側壁近傍ではほとんど
得られなくなり浴面保持が出来ないが、上記導体を設け
ることによりｌ」方向でほぼ均一な推力を得ることがで
きる。また、浴槽出口端壁の浴中にヒＡ流を形成する方
法の一つにかかる導体の１１］Ｗを成る範囲に設定する
ことがで挙げられる。このＷは溶融金属２に対する導体
１０の電気伝導度の比及びリニアインダクションモータ
ーのボールピッチτにより決まるが、例えば、導体１０
としてＮｏを選へばＷは０，２５τ〜τの範囲が好まし
い。As shown in Fig. ft52, a rectangular parallelepiped-shaped conductor 10, which has higher electrical conductivity than molten metal, is provided inside the side wall and immersed in the bath, and the iron core of the linear injection motor is
It is provided even above this conductor. If the side wall is made of an insulating refractory material without such a conductor, the thrust by the linear induction motor will hardly be obtained near the side wall, making it impossible to maintain the bath surface. However, by providing the above conductor, the thrust force will be almost uniform in the l'' direction You can get a lot of thrust. Further, one method of forming a heat flow in the bath at the end wall of the bathtub outlet is to set the conductor in the range of 11]W. This W is determined by the ratio of the electrical conductivity of the conductor 10 to the molten metal 2 and the ball pitch τ of the linear induction motor.
If No is selected as the value, W is preferably in the range of 0.25τ to τ.
かかる導体は使用温度に於る電気伝導度が溶融金属のそ
れより大きい物質であればよいが。Such a conductor may be any material as long as its electrical conductivity at the operating temperature is greater than that of the molten metal.
実用的には溶融金属に対する耐食性に優れたものが好ま
しい。かかる物質としてはＮｏ、 Ｗ 、 Ｔｉが挙げ
られるが、加Ｔ性、入手の簡単な点でＮ。Practically speaking, it is preferable to use a material that has excellent corrosion resistance against molten metal. Such substances include No, W, and Ti, but N is preferable because of its ability to add T and easy availability.
が好ましい。これらの物質で導体全体を構成してもよい
が、Ｃｕ、 ＡＩ、 Ａｇ等溶融金属に対する耐食性及
び耐熱性に劣る物質の外周面をＭＯ等の物質で構成した
サンドイッチ状のものも使用される。is preferred. Although the entire conductor may be made of these materials, a sandwich-like conductor may also be used in which the outer peripheral surface of a material having poor corrosion resistance and heat resistance against molten metals such as Cu, AI, and Ag is made of a material such as MO.
また、第２図に示されるように中央部の浴深さｈは導体
近傍の浴深さ騒より深く構成されている。この深さの関
係、即ちｈｅ／ｈＥは１〜３の範囲が望ましく、かかる
範囲で出１１端壁近傍の浴中に１−−Ａ流が生し、この
上Ｈ流は、更に中央から側壁に向う流れを形成する。ｈ
ｅ／ ｈ、はに記範囲中１．２〜１．７の範囲がより望
ましい。Further, as shown in FIG. 2, the bath depth h in the central portion is deeper than the bath depth in the vicinity of the conductor. This depth relationship, that is, he/hE, is preferably in the range of 1 to 3. In this range, the 1--A flow is generated in the bath near the end wall of the outlet 11, and the upper H flow is further extended from the center to the side wall. form a flow towards. h
e/h is more preferably in the range of 1.2 to 1.7.
かかるＪ二昇流を形成する別の態様は第３図に小すｍｌ
＜、中央部におけるリニアインタクションモーターの
鉄心Ｆ面と浴面との間隙ｇ。が側壁近傍におけるその間
隙ｇ、より大になるよう構成することである。この間隙
の関係はｇｃｇＥか０〜５０■の範囲が好ましく、３〜
２０ｍ１ＩＢの範囲か望ましい。Another embodiment of forming such a J2 riser is shown in FIG.
<, Gap between the iron core F surface of the linear interaction motor and the bath surface at the center. The gap g in the vicinity of the side wall is made larger. The relationship of this gap is preferably in the range of gcgE from 0 to 50, and from 3 to 50.
A range of 20m1IB is desirable.
第１図は本発明を実施する装置の一例で、その縦断面図
である。
第２１ｄは！ｔＳ１図のＡＡ断面図である。
ｆｆ５３図は別の装置の断面図である。
ｌ・・・・・・浴槽
２・・・・・・溶融金属浴
３・・・・・・出Ｉ」端壁
４・・・・・・リニアインタクションモーター５・・・
・・・ガラスリボン
８・・・・・・共心FIG. 1 is a longitudinal sectional view of an example of an apparatus for carrying out the present invention. The 21d is! It is an AA sectional view of the tS1 figure. Figure ff53 is a sectional view of another device. l... Bathtub 2... Molten metal bath 3... Exit I' end wall 4... Linear interaction motor 5...
...Glass ribbon 8...Concentric
Claims (1)
スリボンを移送し、浴槽の出口端壁り力を通して連続的
に浴槽より搬出するフロートカラスの製造法において、
該浴面を浴槽の出［１端壁より高くし、出［１端壁近傍
の浴に１．流方向へ向う電磁作用による推力を印加し、
出ＩＩ端壁からの溶融金属の流出を防ぐとバに出１］端
壁近傍の浴に上昇流を形成しカラスリボンを浴槽よりほ
ぼ水モに引出すことを特徴とするフロートガラスの製造
法。 ２、 曲記棺力は出口端壁近傍の浴面１−力に設けられ
たリニアインダクションモーターにより印加され、前記
し昇流は該リニアイングクションモーターの浴の側部に
浸漬して設けられた金属部材とにより形成される特許請
求の範囲第１ ｓｔ１記載の製造力性。 ３ 前記に昇流は中央部におけるリニアイングクション
モーターと浴槽低部との間隙が側壁近傍より大きくする
ことにより形成される特許請求の範囲第２項記載の製造
力υ、。[Claims] 1. A method for manufacturing a float crow, in which a crow ribbon is transferred along a horizontal bath surface of molten metal contained in a bathtub, and is continuously carried out from the bathtub through the force of the outlet end wall of the bathtub,
Raise the bath surface higher than the first end wall of the bathtub, and place the bath surface near the first end wall of the bathtub. Applying thrust due to electromagnetic action in the flow direction,
A method for producing float glass, which is characterized by forming an upward flow in a bath near the end wall to draw the glass ribbon out of the bath almost into the water. 2. The curving force is applied by a linear induction motor installed at the bath surface near the outlet end wall, and the rising flow is provided by submerging the side of the bath of the linear induction motor. The manufacturing capability according to claim 1 st1, which is formed of a metal member. 3. The manufacturing force υ according to claim 2, wherein said rising flow is formed by making the gap between the linear injection motor in the center part and the bottom part of the bathtub larger than in the vicinity of the side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9022184A JPS60235731A (en) | 1984-05-08 | 1984-05-08 | Manufacture of float glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9022184A JPS60235731A (en) | 1984-05-08 | 1984-05-08 | Manufacture of float glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60235731A true JPS60235731A (en) | 1985-11-22 |
| JPH048376B2 JPH048376B2 (en) | 1992-02-14 |
Family
ID=13992427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9022184A Granted JPS60235731A (en) | 1984-05-08 | 1984-05-08 | Manufacture of float glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60235731A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083159C (en) * | 1995-10-19 | 2002-04-17 | 日本电气株式会社 | Method for manufacturing semiconductor device with stabization of bipolar transistor and schottky barrier diode |
| JP2009107871A (en) * | 2007-10-29 | 2009-05-21 | Asahi Glass Co Ltd | Glass plate manufacturing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5375213A (en) * | 1976-12-17 | 1978-07-04 | V Nauchinooisusuredobuaterusuk | Production of plate glass |
-
1984
- 1984-05-08 JP JP9022184A patent/JPS60235731A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5375213A (en) * | 1976-12-17 | 1978-07-04 | V Nauchinooisusuredobuaterusuk | Production of plate glass |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083159C (en) * | 1995-10-19 | 2002-04-17 | 日本电气株式会社 | Method for manufacturing semiconductor device with stabization of bipolar transistor and schottky barrier diode |
| JP2009107871A (en) * | 2007-10-29 | 2009-05-21 | Asahi Glass Co Ltd | Glass plate manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH048376B2 (en) | 1992-02-14 |
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