DE899850C - Process for the production of hollow bodies closed on one side from quartz or similar high-melting materials - Google Patents

Process for the production of hollow bodies closed on one side from quartz or similar high-melting materials

Info

Publication number
DE899850C
DE899850C DEO1872A DEO0001872A DE899850C DE 899850 C DE899850 C DE 899850C DE O1872 A DEO1872 A DE O1872A DE O0001872 A DEO0001872 A DE O0001872A DE 899850 C DE899850 C DE 899850C
Authority
DE
Germany
Prior art keywords
quartz
melting
production
hollow bodies
similar high
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
Application number
DEO1872A
Other languages
German (de)
Inventor
Dipl-Ing Werner Badke
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.)
Optik Jenaer Glaswerk Schott &
Original Assignee
Optik Jenaer Glaswerk Schott &
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 Optik Jenaer Glaswerk Schott & filed Critical Optik Jenaer Glaswerk Schott &
Priority to DEO1872A priority Critical patent/DE899850C/en
Application granted granted Critical
Publication of DE899850C publication Critical patent/DE899850C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
    • C03B5/033—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by using resistance heaters above or in the glass bath, i.e. by indirect resistance heating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B9/00—Blowing glass; Production of hollow glass articles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Description

Die Herstellung von einseitig geschlossenen Hohlkörpern aus Quarz oder ähnlichen hochschmelzenden Stoffen ist nach verschiedenen Verfahren möglich. So kann man z. B. an einen Abschnitt eines Quarzrohres ein Bodenstück anschmelzen. Andererseits ist es bekannt, einen rohrförmigen Schmelzkörper an seinem einen Ende zusammenzuquetschen, so daß durch Verschweißen des zusammengequetschten Endes ein einseitig geschlossener Hohlkörper entsteht, dessen weitere Formgebung durch Aufblasen erfolgt.The manufacture of hollow quartz bodies closed on one side or similar high-melting substances is possible using various methods. So you can z. B. melt a base piece on a section of a quartz tube. On the other hand, it is known to have a tubular melting body at one end squeeze together so that by welding the squeezed end together Hollow body closed on one side is created, its further shaping by inflation he follows.

Ferner ist vorgeschlagen worden, einseitig geschlossene Schmelzlinge aus Quarz od. dgl. direkt unter Verwendung eines besonders geformten Heizwiderstandes, bei dem die Stromzuführung nur von einer Seite des Schmelzlings her erfolgt, herzustellen.It has also been proposed that fusible bodies closed on one side made of quartz or the like directly using a specially shaped heating resistor, in which the power is only supplied from one side of the fused article.

Diese bekannten Verfahren sind zum Teil ziemlich umständlich, zum Teil sind sie auch, insbesondere für die Herstellung von größeren, einseitig geschlossenen Hohlkörpern, ungeeignet, da es bei größeren und auch bei starkwandigen Gefäßen Schwierigkeiten macht, das Schmelzgut gleichmäßig zu erhitzen und einen einwandfrei dichten und gleichmäßig starken Boden herzustellen.These known methods are sometimes quite cumbersome, for They are also part of it, especially for the production of larger, unilaterally closed ones Hollow bodies, unsuitable as there are difficulties with larger and also with thick-walled vessels makes to heat the melt evenly and to seal properly and to produce evenly strong soil.

Diese Nachteile der bekannten Verfahren werden gemäß der Erfindung dadurch vermieden, daß das Schmelzgut durch mehrere um seine Mittelachse angeordnete Heizstäbe zum Schmelzen gebracht wird, während sich in der Richtung der Mittelachse ein nicht beheizter, in einem gewissen Abstand vom Boden des Schmelzlings angeordneter Stab befindet, und daß nach dem Herausziehen der Heizstäbe und des Mittelstabes der Schmelzling durch das vom letzteren gebildete Loch aufgeblasen wird.These disadvantages of the known methods are addressed according to the invention avoided by the fact that the melt is arranged by several around its central axis Heating rods are melted while moving in the direction of the central axis one that is not heated and is arranged at a certain distance from the bottom of the melted item Rod is located, and that after pulling out the heating rods and the central rod the melt is inflated through the hole formed by the latter.

Nach diesem Verfahren können für die Beheizung ges Schmelzgutes einfache Stäbe aus Graphit oder ähnlichem Material verwendet werden, die am besten konzentrisch um die Mittelachse des Schmelzgefäßes angeordnet werden. Der in. Richtung der Mittelachse liegende unbeheizte Stab hat die Aufgabe, innerhalb des Schmelzlings einen Hohlraum zu bilden, durch :den nach dem Schmelzen das Aufblasen erfolgen kann. Dieser Stab geht nicht wie die Heizstäbe durch das Schmelzgut hindurch, sondern man läßt zwischen seinem Ende und dem Ende der .Schmelze einen gewissen Abstand, :dessen Größe die Bodenstärke des herzustellenden Gefäßes bestimmt. Es wird deshalb vorzugsweise so angeordnet, daß dieser Abstand beliebig einstellbar ist.According to this process, the melting material can be heated easily Rods made of graphite or similar material are used, which are best concentric be arranged around the central axis of the melting vessel. The one in the direction of the central axis lying, unheated rod has the task of creating a cavity within the melting part to form by: the inflation can take place after melting. This staff does not go through the melting material like the heating rods, but one leaves between its end and the end of the .melt a certain distance,: whose size the The bottom thickness of the vessel to be produced is determined. It is therefore preferably so arranged that this distance can be adjusted as desired.

Nach genügender Erwärmung :des Schmelzgutes werden die Heizstäbe sowie der Mittelstab aus dem Schmelzling herausgezogen. Durch das vom Mittelstab hinterlassene Loch wind dann der Schmelzling in einer Form, beispielsweise mittels Preßluft, aufgeblasen. Dabei werden die von den Heizstäben herrührenden Löcher zusammengedrückt.After sufficient heating: the melting material will be the heating rods as well the central rod pulled out of the melting point. By the one left by the center stick Hole then wind the melt in a mold, for example by means of compressed air, inflated. In doing so, the holes made by the heating rods are compressed.

Eine Anordnung zur Durchführung des erfindungsgemäßen Verfahrens ist in der Abbildung als Beispiel schematisch dargestellt. Hierbei sind sechs Heizstäbe t konzentrisch um die Mittelachse eines Schmelzlings z angeordnet. Sie sind mit ihren Enden in den Platten 3 und q. so gehaltert, daß sie nach Beendigung des Schmelzvorganges aus der Platte q. herausgezogen werden können. An den Platten sind die Stromanschlußfahnen 5 und 61eitend befestigt. In Richtung der Mittelachse ist an .der Platte 3 der Stab 7 in der Weise angebracht, daß der Abstand zwischen seinem Ende und der Platte q. mit Hilfe der Mutter 8 beliebig verstellt werden kann.An arrangement for carrying out the method according to the invention is shown schematically in the figure as an example. There are six heating rods t arranged concentrically around the central axis of a fused article z. You are with their ends in the plates 3 and q. held in such a way that they are after the end of the melting process from the plate q. can be pulled out. The power connection lugs are on the plates 5 and 61 on the sides. In the direction of the central axis, the rod is on the plate 3 7 mounted in such a way that the distance between its end and the plate q. can be adjusted as required using the nut 8.

Claims (1)

PATENTANSPRÜCHE: r. Verfahren zur Herstellung von einseitig geschlossenen Hohlkörpern aus Quarz oder ähnlichen hochschmelzenden Stoffen, bei :dem ein unter Verwendung eines elektrisch beheizten Widerstandes erzeugter Schmelzling aufgeblasen wird, dadurch gekennzeichnet, daß das Schmelzgut ,durch mehrere um seine Mittelachse angeordnete Heizstäbe zum Schmelzen gebracht wird, während sich in der Richtung der Mittelachse ein nicht beheizter, in einem gewissen Abstand vom Boden des Schmelzlings angeordneter Stab befindet, und daß nach dem Herausziehen -der Heizstäbe und des Mittelstabes der Schmelzling durch das vom letzteren gebildete Loch aufgeblasen wird. a. Einrichtung zur Durchführung des Verfahrens nach Anspruch r, dadurch gekennzeichnet, daß der Abstand des Mittelstabes vom Boden -des Schmelzlings beliebig einstellbar ist.PATENT CLAIMS: r. Process for the production of unilaterally closed Hollow bodies made of quartz or similar high-melting materials, with: the one below Using an electrically heated resistor, the melted part produced is inflated is, characterized in that the melting material, by several around its central axis arranged heating rods is melted while moving in the direction the central axis is a non-heated, at a certain distance from the bottom of the melting point arranged rod is, and that after pulling out -the heating rods and the Central rod inflated the melt through the hole formed by the latter will. a. Device for carrying out the method according to claim r, characterized in that that the distance of the center rod from the bottom of the melt item can be adjusted as required is.
DEO1872A 1951-10-13 1951-10-13 Process for the production of hollow bodies closed on one side from quartz or similar high-melting materials Expired DE899850C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEO1872A DE899850C (en) 1951-10-13 1951-10-13 Process for the production of hollow bodies closed on one side from quartz or similar high-melting materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEO1872A DE899850C (en) 1951-10-13 1951-10-13 Process for the production of hollow bodies closed on one side from quartz or similar high-melting materials

Publications (1)

Publication Number Publication Date
DE899850C true DE899850C (en) 1953-12-17

Family

ID=7349733

Family Applications (1)

Application Number Title Priority Date Filing Date
DEO1872A Expired DE899850C (en) 1951-10-13 1951-10-13 Process for the production of hollow bodies closed on one side from quartz or similar high-melting materials

Country Status (1)

Country Link
DE (1) DE899850C (en)

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