FR2340519A1 - Four pour tres hautes temperatures - Google Patents
Four pour tres hautes temperaturesInfo
- Publication number
- FR2340519A1 FR2340519A1 FR7603308A FR7603308A FR2340519A1 FR 2340519 A1 FR2340519 A1 FR 2340519A1 FR 7603308 A FR7603308 A FR 7603308A FR 7603308 A FR7603308 A FR 7603308A FR 2340519 A1 FR2340519 A1 FR 2340519A1
- Authority
- FR
- France
- Prior art keywords
- pref
- open
- high temperature
- inert gas
- heater element
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract 3
- 229910052799 carbon Inorganic materials 0.000 title 1
- 239000011261 inert gas Substances 0.000 title 1
- 238000010438 heat treatment Methods 0.000 abstract 3
- 230000007935 neutral effect Effects 0.000 abstract 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910021397 glassy carbon Inorganic materials 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 230000008022 sublimation Effects 0.000 abstract 1
- 238000000859 sublimation Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0014—Devices wherein the heating current flows through particular resistances
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/029—Furnaces therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/60—Optical fibre draw furnaces
- C03B2205/62—Heating means for drawing
- C03B2205/63—Ohmic resistance heaters, e.g. carbon or graphite resistance heaters
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/60—Optical fibre draw furnaces
- C03B2205/62—Heating means for drawing
- C03B2205/64—Induction furnaces, i.e. HF/RF coil, e.g. of the graphite or zirconia susceptor type
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/60—Optical fibre draw furnaces
- C03B2205/80—Means for sealing the preform entry or upper end of the furnace
- C03B2205/81—Means for sealing the preform entry or upper end of the furnace using gas
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/60—Optical fibre draw furnaces
- C03B2205/82—Means for sealing the fibre exit or lower end of the furnace
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/60—Optical fibre draw furnaces
- C03B2205/90—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7603308A FR2340519A1 (fr) | 1976-02-06 | 1976-02-06 | Four pour tres hautes temperatures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7603308A FR2340519A1 (fr) | 1976-02-06 | 1976-02-06 | Four pour tres hautes temperatures |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2340519A1 true FR2340519A1 (fr) | 1977-09-02 |
FR2340519B1 FR2340519B1 (fr) | 1980-10-31 |
Family
ID=9168839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7603308A Granted FR2340519A1 (fr) | 1976-02-06 | 1976-02-06 | Four pour tres hautes temperatures |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2340519A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2401103A1 (fr) * | 1977-04-30 | 1979-03-23 | Sumitomo Electric Industries | Procede et appareil de production de fibres de transmission optique |
FR2417783A1 (fr) * | 1978-02-21 | 1979-09-14 | Corning Glass Works | Procede d'etirage de filaments optiques |
EP0380054A1 (fr) * | 1989-01-23 | 1990-08-01 | Sumitomo Electric Industries, Ltd. | Four pour le chauffage de préformes à quartz pour fibres optiques |
EP0795519A1 (fr) * | 1996-03-14 | 1997-09-17 | Alcatel Fibres Optiques | Dispositif d'injection de gaz non oxydant à l'intérieur d'un four |
EP1030824A1 (fr) * | 1997-10-31 | 2000-08-30 | Corning Incorporated | Appareil permettant l'etirage de fibres de guide d'ondes et procede correspondant |
WO2000068157A1 (fr) * | 1999-05-10 | 2000-11-16 | Pirelli Cavi E Sistemi S.P.A. | Four a induction permettant de tirer des preformes de fibres optiques de fort diametre et procede correspondant |
-
1976
- 1976-02-06 FR FR7603308A patent/FR2340519A1/fr active Granted
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2401103A1 (fr) * | 1977-04-30 | 1979-03-23 | Sumitomo Electric Industries | Procede et appareil de production de fibres de transmission optique |
FR2417783A1 (fr) * | 1978-02-21 | 1979-09-14 | Corning Glass Works | Procede d'etirage de filaments optiques |
EP0380054A1 (fr) * | 1989-01-23 | 1990-08-01 | Sumitomo Electric Industries, Ltd. | Four pour le chauffage de préformes à quartz pour fibres optiques |
AU618162B2 (en) * | 1989-01-23 | 1991-12-12 | Sumitomo Electric Industries, Ltd. | Furnace for heating highly pure quartz preform for optical fiber |
US5114338A (en) * | 1989-01-23 | 1992-05-19 | Sumitomo Electric Industries, Ltd. | Furnace for heating highly pure quartz preform for optical fiber |
EP0795519A1 (fr) * | 1996-03-14 | 1997-09-17 | Alcatel Fibres Optiques | Dispositif d'injection de gaz non oxydant à l'intérieur d'un four |
FR2746176A1 (fr) * | 1996-03-14 | 1997-09-19 | Alcatel Fibres Optiques | Dispositif d'injection de gaz non oxydant a l'interieur d'un four |
US5970083A (en) * | 1996-03-14 | 1999-10-19 | Alcatel Fibres Optiques | Device for injecting non-oxidizing gas into a furnace |
EP1030824A1 (fr) * | 1997-10-31 | 2000-08-30 | Corning Incorporated | Appareil permettant l'etirage de fibres de guide d'ondes et procede correspondant |
EP1030824A4 (fr) * | 1997-10-31 | 2000-12-20 | Corning Inc | Appareil permettant l'etirage de fibres de guide d'ondes et procede correspondant |
WO2000068157A1 (fr) * | 1999-05-10 | 2000-11-16 | Pirelli Cavi E Sistemi S.P.A. | Four a induction permettant de tirer des preformes de fibres optiques de fort diametre et procede correspondant |
US7814767B2 (en) | 1999-05-10 | 2010-10-19 | Prysmian Cavi E Sistemi Energia S.R.L. | Method and induction furnace for drawing large diameter preforms to optical fibres |
Also Published As
Publication number | Publication date |
---|---|
FR2340519B1 (fr) | 1980-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
CL | Concession to grant licenses | ||
TP | Transmission of property |