JPH0339465Y2 - - Google Patents
Info
- Publication number
- JPH0339465Y2 JPH0339465Y2 JP16728486U JP16728486U JPH0339465Y2 JP H0339465 Y2 JPH0339465 Y2 JP H0339465Y2 JP 16728486 U JP16728486 U JP 16728486U JP 16728486 U JP16728486 U JP 16728486U JP H0339465 Y2 JPH0339465 Y2 JP H0339465Y2
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- glass tube
- borosilicate glass
- borosilicate
- forming apparatus
- 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
Links
- 239000005388 borosilicate glass Substances 0.000 claims description 14
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 6
- 239000004327 boric acid Substances 0.000 claims description 6
- 229910052796 boron Inorganic materials 0.000 claims description 6
- 239000006060 molten glass Substances 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- 229910021538 borax Inorganic materials 0.000 claims description 3
- 239000004328 sodium tetraborate Substances 0.000 claims description 3
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 3
- 238000007496 glass forming Methods 0.000 claims 1
- 239000011521 glass Substances 0.000 description 12
- 238000000465 moulding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/04—Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles
Description
【考案の詳細な説明】
〔考案の目的〕
（産業上の利用分野）
本考案はダンナー式硼珪酸ガラス管成形装置に
関する。[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a Danner type borosilicate glass tube forming apparatus.
（従来の技術）
従来、硼珪酸系溶融ガラスを成形用スリーブに
供給して管引き成形するダンナー式硼珪酸ガラス
管成形装置において、成形用スリーブ上に供給さ
れた溶融ガラスの表面から、硼素およびアルカリ
成分が揮発して、ガラスの表面が半透明状になり
また、この揮発によつて異質化したガラスの表面
層と、正常なガラス層との物性、たとえば線膨張
係数等の相違が、成形されたガラス管の収縮に影
響を与え、ガラス管の外径の変動が大きくなると
いう問題がある。(Prior Art) Conventionally, in a Danner-type borosilicate glass tube forming apparatus that supplies borosilicate-based molten glass to a forming sleeve and forms it into a tube, boron and The alkaline component volatilizes and the surface of the glass becomes translucent. Also, the difference in physical properties, such as coefficient of linear expansion, between the surface layer of the glass, which has become heterogeneous due to this volatilization, and the normal glass layer, such as the coefficient of linear expansion, There is a problem in that this affects the shrinkage of the glass tube and increases the fluctuation in the outer diameter of the glass tube.
（考案が解決しようとする問題点）
本考案は上記事情を考慮してなされたもので、
成形用スリーブ上にあるガラスの表面から、硼素
等の揮発を防止することにより、透明で外径の変
動の小さいガラス管を成形することができる硼珪
酸ガラス管成形装置を提供することを目的とす
る。(Problems that the invention attempts to solve) This invention was made in consideration of the above circumstances.
The purpose of the present invention is to provide a borosilicate glass tube forming device that is capable of forming transparent glass tubes with small variations in outer diameter by preventing the volatilization of boron, etc. from the surface of the glass on the forming sleeve. do.
（問題点を解決するための手段および作用）
本考案は上記の目的を達成するために、成形用
スリーブを包囲するマツフル内に、たとえば硼酸
または硼砂を収容した開口容器を配設し、マツフ
ル内を硼素の飽和雰囲気状態としたものである。
これによつて、成形用スリーブ上のガラスから硼
素成分が揮発するのが防止され、ガラス表面層は
異質化することもないので、透明かつ外径の変動
の小さい硼珪酸ガラス管が成形される。
(Means and effects for solving the problems) In order to achieve the above object, the present invention disposes an open container containing, for example, boric acid or borax in the Matsufuru that surrounds the molding sleeve, and is a boron-saturated atmosphere.
This prevents the boron component from volatilizing from the glass on the molding sleeve, and the glass surface layer does not become heterogeneous, so a transparent borosilicate glass tube with small outside diameter fluctuations can be molded. .
（実施例） 本考案の詳細を図示の実施例により説明する。(Example) The details of the invention will be explained with reference to the illustrated embodiments.
先端を下方へ傾斜させて回転する耐火物製の成
形用スリーブ１上に、溶融炉のトラフから供給さ
れた硼珪酸系溶融ガラス２は、スリーブ１に巻き
つき、その先端から垂下して引き出され、ブロー
エアを送入されてガラス管３に成形される。スリ
ーブ１の周辺はマツフル４によつて包囲され、ガ
ラス管成形に適する温度に調整されている。この
マツフル４内のスリーブ１の先端から約10cm下方
に、上面を開口した容器５が配設され、この中に
硼酸６が収容されており、硼酸６の蒸発して減量
した分は逐次連続的に補給されるようになつてい
る。容器５は粘土質または高アルミナ質の耐火物
からなり、容量は約１リツトルである。 A borosilicate-based molten glass 2 supplied from a trough of a melting furnace is wrapped around a refractory forming sleeve 1 that rotates with its tip tilted downward, and is drawn out by hanging from the tip of the sleeve 1. , blow air is introduced to form the glass tube 3. The periphery of the sleeve 1 is surrounded by a matte fur 4, and the temperature is adjusted to a temperature suitable for forming a glass tube. Approximately 10 cm below the tip of the sleeve 1 inside this Matsufuru 4, a container 5 with an open top is placed, and boric acid 6 is stored in this container. It is now being replenished. The container 5 is made of clay or high alumina refractory material and has a capacity of about 1 liter.
このように構成された硼珪酸ガラス管成形装置
において、マツフル４内は容器５に収容された硼
酸６が蒸発して、常に硼素の飽和雰囲気状態に保
持されているので、スリーブ１上の溶融ガラス２
は硼素成分の揮発が抑制され、透明かつ平滑な表
面を有する硼珪酸ガラスが成形される。 In the borosilicate glass tube forming apparatus configured in this way, the boric acid 6 contained in the container 5 evaporates inside the Matsufuru 4, and the molten glass on the sleeve 1 is kept in a boron-saturated atmosphere at all times. 2
The volatilization of the boron component is suppressed, and borosilicate glass with a transparent and smooth surface is formed.
なお、上記は中空の硼珪酸ガラス管の成形に関
して説明したが、本考案は中実の硼珪酸ガラス棒
の成形についても同様に応用可能なものである。 Although the above description has been made regarding the molding of a hollow borosilicate glass tube, the present invention is equally applicable to the molding of a solid borosilicate glass rod.
以上のように本考案は、成形用スリーブを包囲
するマツフル内に、たとえば硼酸または硼砂を収
容した開口容器を配設し、マツフル内を硼素の飽
和雰囲気状態とした硼珪酸ガラス管成形装置であ
り、スリーブ上にある硼珪酸ガラスは硼素成分が
揮発することがないので、表面が透明で平滑度の
良好な、外径変動の小さい硼珪酸ガラス管を成形
することができる。
As described above, the present invention is a borosilicate glass tube forming apparatus in which an open container containing, for example, boric acid or borax is disposed inside the matsufuru that surrounds the molding sleeve, thereby creating a boron-saturated atmosphere inside the matsufuru. Since the boron component of the borosilicate glass on the sleeve does not volatilize, it is possible to form a borosilicate glass tube with a transparent surface, good smoothness, and small outer diameter fluctuations.
図面は本考案の実施例を示す縦断側面図であ
る。
１……スリーブ、２……溶融ガラス、３……ガ
ラス管、４……マツフル、５……容器、６……硼
酸。
The drawing is a longitudinal sectional side view showing an embodiment of the present invention. 1... Sleeve, 2... Molten glass, 3... Glass tube, 4... Matsufuru, 5... Container, 6... Boric acid.
Claims (1)
して管引き成形するダンナー式硼珪酸ガラス管
成形装置において、前記成形用スリーブを包囲
するマツフル内を硼素の飽和雰囲気状態とした
ことを特徴とする硼珪酸ガラス管成形装置。 (2) 前記マツフル内に硼酸または硼砂を収容した
開口容器を配設したことを特徴とする実用新案
登録請求の範囲第１項目記載の硼珪酸ガラス成
形装置。[Claims for Utility Model Registration] (1) In a Danner-type borosilicate glass tube forming apparatus that feeds borosilicate-based molten glass to a forming sleeve and forms it into a tube, the inside of the pineful surrounding the forming sleeve is filled with boron. A borosilicate glass tube forming apparatus characterized by a saturated atmosphere. (2) The borosilicate glass forming apparatus according to claim 1 of the utility model registration claim, characterized in that an open container containing boric acid or borax is disposed within the matsufuru.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16728486U JPH0339465Y2 (en) | 1986-10-30 | 1986-10-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16728486U JPH0339465Y2 (en) | 1986-10-30 | 1986-10-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6373333U JPS6373333U (en) | 1988-05-16 |
| JPH0339465Y2 true JPH0339465Y2 (en) | 1991-08-20 |
Family
ID=31099074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16728486U Expired JPH0339465Y2 (en) | 1986-10-30 | 1986-10-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0339465Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5787297B2 (en) * | 2011-09-30 | 2015-09-30 | ＡｖａｎＳｔｒａｔｅ株式会社 | Glass plate and method for producing glass plate |
| JP5787296B2 (en) * | 2011-09-30 | 2015-09-30 | ＡｖａｎＳｔｒａｔｅ株式会社 | Glass plate and method for producing glass plate |
| US9034442B2 (en) | 2012-11-30 | 2015-05-19 | Corning Incorporated | Strengthened borosilicate glass containers with improved damage tolerance |
| MX2017002898A (en) | 2014-09-05 | 2017-10-11 | Corning Inc | Glass articles and methods for improving the reliability of glass articles. |
-
1986
- 1986-10-30 JP JP16728486U patent/JPH0339465Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6373333U (en) | 1988-05-16 |
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