JPS55130825A - Forehearth for producing glass - Google Patents

Forehearth for producing glass

Info

Publication number
JPS55130825A
JPS55130825A JP3699279A JP3699279A JPS55130825A JP S55130825 A JPS55130825 A JP S55130825A JP 3699279 A JP3699279 A JP 3699279A JP 3699279 A JP3699279 A JP 3699279A JP S55130825 A JPS55130825 A JP S55130825A
Authority
JP
Japan
Prior art keywords
glass
heated
cover plate
block
space
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
JP3699279A
Other languages
Japanese (ja)
Inventor
Takashi Uno
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.)
Hoya Corp
Original Assignee
Hoya 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 Hoya Corp filed Critical Hoya Corp
Priority to JP3699279A priority Critical patent/JPS55130825A/en
Publication of JPS55130825A publication Critical patent/JPS55130825A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/02—Forehearths, i.e. feeder channels
    • C03B7/06—Means for thermal conditioning or controlling the temperature of the glass
    • C03B7/07—Electric means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

PURPOSE:To produce uniform high-quality glass by a method wherein the surface of molten glass in glass flowing passage is covered with a cover plate of refractory material such as ceramic, the cover plate is electrically heated, and the glass flow is directly heated by electrodes provided on the side walls of the passage. CONSTITUTION:A cover plate 12 is used to cover the entire surface of flowing molten glass 13 within the conduit channel block (trough part) 11 of the forehearth except for the spout section (where orifice 9 exists). Block 11 is electrically energized from conductive wire 15 via electrode 14 so as to heat the glass 13. The electrode 14 is pressure-welded to the block 11 with spring 16 insulated with insulating glass 17. The upper space 18 is heated by electric heater 19 and is enclosed by refractory 20. Temperature detecting thermometers 23, 24 are provided to cooling zone 4 and adjusting zone 5. The cover plate 12, which is heated by transmission from the heater 19, may be replaced by direct current flow heating. The space 18 may be heated by gas instead of electric heat. Thus, the glass 13 is uniformly heated and no space is present above the glass surface and therefore furnace wall deterioration does not occur and the quality is prevented from deterioration due to mixed wall material.
JP3699279A 1979-03-30 1979-03-30 Forehearth for producing glass Pending JPS55130825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3699279A JPS55130825A (en) 1979-03-30 1979-03-30 Forehearth for producing glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3699279A JPS55130825A (en) 1979-03-30 1979-03-30 Forehearth for producing glass

Publications (1)

Publication Number Publication Date
JPS55130825A true JPS55130825A (en) 1980-10-11

Family

ID=12485229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3699279A Pending JPS55130825A (en) 1979-03-30 1979-03-30 Forehearth for producing glass

Country Status (1)

Country Link
JP (1) JPS55130825A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58501629A (en) * 1981-10-19 1983-09-29 ビ−エツチ　エフ　（エンジニアリング）　リミテツド forehearth
JPS60204631A (en) * 1984-03-02 1985-10-16 シヨツト、グラスヴエルケ Method and device for pulling out glass sheet
WO2019130901A1 (en) * 2017-12-26 2019-07-04 日本電気硝子株式会社 Feeder and glass article manufacturing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58501629A (en) * 1981-10-19 1983-09-29 ビ−エツチ　エフ　（エンジニアリング）　リミテツド forehearth
JPS60204631A (en) * 1984-03-02 1985-10-16 シヨツト、グラスヴエルケ Method and device for pulling out glass sheet
JPH0138051B2 (en) * 1984-03-02 1989-08-10 Schott Glaswerke
WO2019130901A1 (en) * 2017-12-26 2019-07-04 日本電気硝子株式会社 Feeder and glass article manufacturing method
JPWO2019130901A1 (en) * 2017-12-26 2020-11-19 日本電気硝子株式会社 How to manufacture feeders and glass articles
JP2023011679A (en) * 2017-12-26 2023-01-24 日本電気硝子株式会社 Feeder and manufacturing method of glass article

Similar Documents

Publication Publication Date Title
CA1232457A (en) Glass forehearth
KR100643752B1 (en) Skull pot for melting or refining glass or glass ceramics
NO843174L (en) METHOD AND DEVICE FOR GLASS MELTING, REFINING AND HOMOGENIZATION
US2244267A (en) Electric furnace
ES8702866A1 (en) Electric glass melting furnace.
EP0236486B1 (en) Related cases
US2814657A (en) Method and apparatus for heating glass
GB737108A (en) Improvements in or relating to an electrically heated glass melting furnace
US1905534A (en) Apparatus for and method of making glass
US4155731A (en) Fiber forming bushing construction
US1820248A (en) Glass making furnace and method
CA1237460A (en) Electrically heated forehearth and method of controlling molten glass temperature therein
ES8502956A1 (en) Melting furnaces.
JPS5671556A (en) Feeder-head heat-insulating method
JPS55130825A (en) Forehearth for producing glass
GB965820A (en) Process and apparatus for producing glass in ribbon form
US3897234A (en) Method and apparatus for cooling electrically-heated melting furnace
US4680051A (en) Glass forehearth
US2830107A (en) Forehearth bowl temperature control means
US4246432A (en) Method and apparatus for melting frits for inorganic oxidic surface coatings by electric resistance heating
US3198619A (en) Tubular forehearth for glass furnace
US4803698A (en) Electrically heated forehearth
US3891422A (en) Electrically-heated melting furnace with melt cooling means
US2383168A (en) Apparatus for melting glass
US1905533A (en) Forehearth of glass melting furnaces