JP3217177B2 - Float glass manufacturing equipment - Google Patents
Float glass manufacturing equipmentInfo
- Publication number
- JP3217177B2 JP3217177B2 JP04753993A JP4753993A JP3217177B2 JP 3217177 B2 JP3217177 B2 JP 3217177B2 JP 04753993 A JP04753993 A JP 04753993A JP 4753993 A JP4753993 A JP 4753993A JP 3217177 B2 JP3217177 B2 JP 3217177B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- hanger
- molten metal
- metal bath
- bath
- 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.)
- Expired - Lifetime
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
Description
【０００１】[0001]
【産業上の利用分野】本発明はフロート式のガラス製造
装置で、特に高歪点ガラス又は低膨張ガラスを成形する
フロート製造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a float type glass manufacturing apparatus, and more particularly to a float type glass manufacturing apparatus for forming high strain point glass or low expansion glass.
【０００２】[0002]
【従来の技術】フロートガラスの製造装置として、図１
に示すような装置が知られている。即ち、溶融金属浴１
を収容する溶融金属浴槽２を設け、溶融金属浴槽２の天
井部をハンガー５に係合した耐火物３で構成してある。
このハンガー５はその上端が鋼材４に係合されている。
ハンガー５は、通常、オーステナイト系のクロム−ニッ
ケル鋼により構成されている。６はヒータでありガラス
リボン（帯状ガラス）Ｇを所定温度になるように調整す
る。７は耐火物で構成された横壁である。2. Description of the Related Art As an apparatus for manufacturing a float glass, FIG.
The following devices are known. That is, molten metal bath 1
Is provided, and the ceiling of the molten metal bath 2 is made of a refractory 3 engaged with a hanger 5.
The upper end of the hanger 5 is engaged with the steel material 4.
The hanger 5 is usually made of austenitic chromium-nickel steel. Reference numeral 6 denotes a heater which adjusts a glass ribbon (strip-shaped glass) G to a predetermined temperature. Reference numeral 7 denotes a horizontal wall made of a refractory.
【０００３】フロートバスでの帯状ガラスの成形温度は
ソーダライム組成では通常１１００〜６００℃で、粘度
で表わすと１０3.5 〜１０11.5ポイズの範囲である。こ
の時のハンガーの温度は最高で９００℃である。近年エ
レクトロニクス用を中心とした高歪点ガラス、低膨張ガ
ラスの用途が拡大し、ソーダライムガラス以外の例えば
硼珪酸ガラス、アルミノシリケートガラスをフロート法
で成形することが試みられている。[0003] forming temperature of the glass ribbon in the float bath in the normal 1,100 to 600 ° C. in <br/> saw Dara Lim composition is in the range of 10 3.5 to 10 11.5 poise expressed in viscosity. At this time, the temperature of the hanger is 900 ° C. at the maximum. Recently high strain point glass around the electronics, expanded low expansion glass applications, it has been attempted to mold saw Dara Imugarasu other example borosilicate glass, aluminosilicate glass by a float process.
【０００４】しかし、これらのガラスは一般に粘度が高
く、成形域で上記の粘度に合わせるためにはソーダライ
ムガラスに比して１００〜２００℃温度を高くする必要
がある。その結果ハンガーの温度も１０００〜１１００
℃にまで上昇する。ハンガーを構成しているオーステナ
イト系のクロム−ニッケル鋼は、１０００℃以上で錫浴
の酸化防止のためにバスに供給されているＮ2 ガスと反
応しＣｒ2 Ｎを生成する。このＣｒ2 Ｎの溶解度が低い
ため、反応の進行と共にＣｒ2 Ｎが析出し全体の脆化を
引き起こす。その結果、通常の耐熱クリープよりはるか
に短時間で破断してしまうため、前記ガラスを製造する
のに、長期運転が不可能であるという課題があった。However, these glasses generally viscosity is high, in order to match the above viscosity at the molding region, it is necessary to increase the 100 to 200 ° C. temperature than the saw Dara Lee <br/> Mugarasu . As a result, the temperature of the hanger is also 1000-1100.
℃ to rise to. The austenitic chromium-nickel steel constituting the hanger reacts with N 2 gas supplied to the bath at 1000 ° C. or higher to prevent oxidation of the tin bath and generates Cr 2 N. Since the solubility of Cr 2 N is low, Cr 2 N precipitates with the progress of the reaction and causes embrittlement of the whole. As a result, since the glass breaks in a much shorter time than normal heat-resistant creep, there has been a problem that long-term operation is impossible to produce the glass.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、従来の技術
が有していた上記課題を解消し、高歪点ガラス、低膨張
ガラスであっても長期運転が可能なフロートガラスの製
造装置の提供を目的とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and provides an apparatus for manufacturing a float glass which can be operated for a long time even with high strain point glass and low expansion glass. For the purpose of providing.
【０００６】[0006]
【課題を解決するための手段】本発明は、溶融金属浴槽
の天井部をハンガーに係合した耐火物で構成し、溶融ガ
ラスを溶融金属浴の浴面に連続的に供給して帯状ガラス
を成形する製造装置であって、窒化珪素又は炭化珪素で
ハンガーを構成したことを特徴とするフロートガラスの
製造装置を提供する。また、溶融金属浴槽の天井部をハ
ンガーに係合した耐火物で構成し、溶融ガラスを溶融金
属浴の浴面に連続的に供給して帯状ガラスを成形する製
造装置であって、１２００℃で窒化反応が起こらない共
有結合形の材料でハンガーを構成したことを特徴とする
フロートガラスの製造装置を提供する。 SUMMARY OF THE INVENTION According to the present invention, a ceiling portion of a molten metal bath is constituted by a refractory material engaged with a hanger, and molten glass is continuously supplied to a bath surface of the molten metal bath to form a strip glass. a molding manufacturing apparatus, in nitriding silicon or silicon carbide
That provides an apparatus for manufacturing a float glass which is characterized by being configured the hanger. Also, cover the ceiling of the molten metal bathtub.
It consists of refractory material that engages with
A product that forms a glass ribbon by continuously supplying it to the bath surface of a genus bath
A nitriding reaction does not occur at 1200 ° C.
The hanger is made of bonded material
Provided is an apparatus for manufacturing a float glass.
【０００７】[0007]
【作用】窒化珪素及び炭化珪素が特に有効であるのは、
その形が共有結合形であり、一般の無機化合物のイオン
結合形を異にするためであると思われる。共有結合はそ
の結合力の強さから、高温で極めて安定であり、１２０
０℃の温度条件下でも窒化反応が起こらず窒化脆化のお
それがないと同時に、高温引張強度、高温クリープ特性
等、ハンガーに具備すべき特性を有する。その結果、高
歪点ガラス、低膨張ガラスを成形するフロートガラスの
製造装置に、窒化珪素製又は炭化珪素製のハンガーを適
用することにより、これまで得られなかった長期連続運
転が可能となる。The silicon nitride and silicon carbide are particularly effective because
This is thought to be because the form is a covalent bond form, which is different from the ionic bond form of general inorganic compounds. Covalent bonds are extremely stable at high temperatures due to their strong binding strength,
0 ℃ nitriding reaction even at temperature conditions occur without the nitride embrittlement fear Do the Most simultaneously, have high-temperature tensile strength, high temperature creep characteristics, the characteristics to be provided in the hanger. As a result, by applying a hanger made of silicon nitride or silicon carbide to a float glass manufacturing apparatus for forming a high strain point glass and a low expansion glass, a long-term continuous operation, which has not been obtained so far, becomes possible.
【０００８】[0008]
【実施例】図１の装置を使用し、ハンガー５を炭化珪素
で構成し、以下の組成のガラスについて、フロートガラ
スの成形を行なった。ハンガーの形状及び寸法は、従来
のものと同じであった。ハンガー温度が１１００℃にな
っており、５年間経過したが天井部の変形は全然見られ
なかった。EXAMPLE Using the apparatus shown in FIG. 1, the hanger 5 was composed of silicon carbide, and a glass having the following composition was formed into a float glass. The shape and dimensions of the hanger were the same as the conventional one. Hanger temperature has become in 1100 ℃, but after five years deformation of the ceiling portion was not observed at all.
【０００９】 ＳｉＯ2 ５６重量％ Ａｌ2 Ｏ3 １１重量％ Ｂ2 Ｏ3 ６重量％ ＭｇＯ ２重量％ ＣａＯ ３重量％ ＳｒＯ ７重量％ ＢａＯ １５重量％ 膨張係数 ４８×１０-7／℃ 歪点 ６３５℃SiO 2 56 wt% Al 2 O 3 11 wt% B 2 O 3 6 wt% MgO 2 wt% CaO 3 wt% SrO 7 wt% BaO 15 wt% Expansion coefficient 48 × 10 −7 / ° C. Strain point 635 ° C
【００１０】比較のために、ハンガー５として従来のク
ロム−ニッケル鋼を用いた装置により、同様組成のフロ
ートガラスを成形した結果、３ケ月後に天井部の垂下が
見られた。溶融金属浴槽を冷却し調査したところ、相当
数のハンガーの破断が認められた。ハンガーの破断面調
査でＮ2 が通常部の８倍以上の濃度になりＣｒ2 Ｎの結
晶が観察された。For comparison, a float glass having the same composition was formed by a device using a conventional chromium-nickel steel as the hanger 5, and as a result, the ceiling part drooped after three months. When the molten metal bath was cooled and examined, considerable breakage of the hanger was observed. N 2 in a hanger of fracture surface survey crystals becomes Cr 2 N in a concentration of more than 8 times the normal portion were observed.
【００１１】[0011]
【発明の効果】本発明によれば、溶融金属浴槽の温度を
高温に保つことができ、高歪点ガラス、低膨張フロート
ガラスの成形が長期連続して可能となり、従来不可能で
あったガラスの工業生産が可能となった。According to the present invention, the temperature of a molten metal bath can be maintained at a high temperature, and high strain point glass and low expansion float glass can be formed continuously for a long period of time. Industrial production has become possible.
【図１】フロートガラスの製造装置の横断面図FIG. 1 is a cross-sectional view of a float glass manufacturing apparatus.
１：金属浴 ２：溶融金属浴槽 ５：ハンガー ６：ヒータ Ｇ：ガラスリボン 1: metal bath 2: molten metal bath 5: hanger 6: heater G: glass ribbon
Claims (2)
た耐火物で構成し、溶融ガラスを溶融金属浴の浴面に連
続的に供給して帯状ガラスを成形する製造装置であっ
て、窒化珪素又は炭化珪素でハンガーを構成したことを
特徴とするフロートガラスの製造装置。1. A manufacturing apparatus for forming a belt-shaped glass by continuously supplying molten glass to a bath surface of a molten metal bath, wherein a ceiling portion of the molten metal bath is made of a refractory engaged with a hanger . apparatus for manufacturing a float glass, characterized in that to constitute a hanger with nitrided silicon or silicon carbide.
た耐火物で構成し、溶融ガラスを溶融金属浴の浴面に連The molten glass is connected to the bath surface of the molten metal bath.
続的に供給して帯状ガラスを成形する製造装置であっThis is a manufacturing device that continuously supplies and forms ribbon glass.
て、１２００℃で窒化反応が起こらない共有結合形の材Covalent bond material that does not cause nitridation at 1200 ° C
料でハンガーを構成したことを特徴とするフロートガラCharacterized by a hanger made up of material
スの製造装置。Production equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04753993A JP3217177B2 (en) | 1993-02-12 | 1993-02-12 | Float glass manufacturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04753993A JP3217177B2 (en) | 1993-02-12 | 1993-02-12 | Float glass manufacturing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06239631A JPH06239631A (en) | 1994-08-30 |
| JP3217177B2 true JP3217177B2 (en) | 2001-10-09 |
Family
ID=12777950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04753993A Expired - Lifetime JP3217177B2 (en) | 1993-02-12 | 1993-02-12 | Float glass manufacturing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3217177B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4604693B2 (en) * | 2003-12-25 | 2011-01-05 | 旭硝子株式会社 | Float bath and float forming method |
| WO2005063635A1 (en) * | 2003-12-25 | 2005-07-14 | Asahi Glass Company, Limited | Float bath and float manufacturing process |
| CN102803166A (en) * | 2009-06-24 | 2012-11-28 | 旭硝子株式会社 | Hanger Assembly And Device For Producing Float Plate Glass |
| JP5472302B2 (en) * | 2009-07-21 | 2014-04-16 | 旭硝子株式会社 | Hanger assembly and float plate glass manufacturing equipment |
| JP2016117595A (en) | 2013-04-18 | 2016-06-30 | 旭硝子株式会社 | Float bath roof member and apparatus for manufacturing float glass plate using the same |
-
1993
- 1993-02-12 JP JP04753993A patent/JP3217177B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06239631A (en) | 1994-08-30 |
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