JPS5738332A - Manufacture of glass rod by vapor axial deposition method - Google Patents

Manufacture of glass rod by vapor axial deposition method

Info

Publication number
JPS5738332A
JPS5738332A JP9702080A JP9702080A JPS5738332A JP S5738332 A JPS5738332 A JP S5738332A JP 9702080 A JP9702080 A JP 9702080A JP 9702080 A JP9702080 A JP 9702080A JP S5738332 A JPS5738332 A JP S5738332A
Authority
JP
Japan
Prior art keywords
powder
heat treatment
oxide powder
rodlike
low
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
JP9702080A
Other languages
Japanese (ja)
Inventor
Motohiro Nakahara
Kunio Ogura
Kazuaki Yoshida
Toshiaki Kuroba
Seiji Shibuya
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.)
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone 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 Furukawa Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Furukawa Electric Co Ltd
Priority to JP9702080A priority Critical patent/JPS5738332A/en
Publication of JPS5738332A publication Critical patent/JPS5738332A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • 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
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • C03B37/0146—Furnaces therefor, e.g. muffle tubes, furnace linings
    • 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
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01466—Means for changing or stabilising the diameter or form of tubes or rods

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To considerably inhibit the shrinkage and to reduce a change in the outside diameter by slowly vitrifying moving rodlike oxide powder deposited in a powder depositing process with a plurality of heat treating units arranged in succession along the moving direction. CONSTITUTION:Oxide powder produced with gaseous starting materials and an oxyhydrogen flame sprayed from a burner 5 having a multitubed structure is deposited on the lower end of a rotator 6 to form rodlike oxide powder A. The rotator is slowly moved upward in synchronism with the deposition speed of oxide powder, and the powder A enters a heat treating unit 7, where it is subjected to primary heat treatment. Since the heat treatment is carried out at a low temp. such as <= about 1,200 deg.C, the shrinkage rate of the rodlike oxide powder A is low. Next, the powder A enters a heat treating unit 8, where it is thoroughly vitrified by secondary heat treatment. This heat treatment is carried out at >= about 1,300 deg.C, yet the shrinkage rate of the powder A is low since the powder has been subjected to the primary heat treatment.
JP9702080A 1980-07-16 1980-07-16 Manufacture of glass rod by vapor axial deposition method Pending JPS5738332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9702080A JPS5738332A (en) 1980-07-16 1980-07-16 Manufacture of glass rod by vapor axial deposition method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9702080A JPS5738332A (en) 1980-07-16 1980-07-16 Manufacture of glass rod by vapor axial deposition method

Publications (1)

Publication Number Publication Date
JPS5738332A true JPS5738332A (en) 1982-03-03

Family

ID=14180699

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9702080A Pending JPS5738332A (en) 1980-07-16 1980-07-16 Manufacture of glass rod by vapor axial deposition method

Country Status (1)

Country Link
JP (1) JPS5738332A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57140328A (en) * 1981-02-20 1982-08-30 Hitachi Ltd Manufacture of base material for optical fiber
JPS6046940A (en) * 1983-08-22 1985-03-14 Furukawa Electric Co Ltd:The Preparation of parent material for optical glass and its device
JPS60186427A (en) * 1984-03-01 1985-09-21 Nippon Telegr & Teleph Corp <Ntt> Manufacture of optical fiber preform
JPS62173030A (en) * 1986-01-27 1987-07-29 Nisshinbo Ind Inc Metal die turning device for turret punch press and its control method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57140328A (en) * 1981-02-20 1982-08-30 Hitachi Ltd Manufacture of base material for optical fiber
JPS6046940A (en) * 1983-08-22 1985-03-14 Furukawa Electric Co Ltd:The Preparation of parent material for optical glass and its device
JPS6328855B2 (en) * 1983-08-22 1988-06-10 Furukawa Denki Kogyo Kk
JPS60186427A (en) * 1984-03-01 1985-09-21 Nippon Telegr & Teleph Corp <Ntt> Manufacture of optical fiber preform
JPS6328853B2 (en) * 1984-03-01 1988-06-10 Nippon Telegraph & Telephone
JPS62173030A (en) * 1986-01-27 1987-07-29 Nisshinbo Ind Inc Metal die turning device for turret punch press and its control method

Similar Documents

Publication Publication Date Title
US4045198A (en) Method of preparing a foreproduct for the production of an optical lightconductor
AU561448B2 (en) Manufacture of optical preform
JPS5567533A (en) Production of glass base material for light transmission
CA1126591A (en) Method for producing preforms for optical fibres
JPS6177631A (en) Manufacture of optical fiber preform
JPS5738332A (en) Manufacture of glass rod by vapor axial deposition method
EP0116342B1 (en) Method of making a glassy preform for optical waveguides
JPS5738329A (en) Controlling method for deposition of oxide powder in axial vapor deposition method
JPS62108744A (en) Transparent vitrification method of porous glass base material
JPH0525818B2 (en)
JPS5510469A (en) Production of glass fiber for light communication
JPS5650130A (en) Manufacture of preform for optical transmission
CA2029590A1 (en) Method for making a preform doped with a metal oxide
JPS5614430A (en) Manufacture of optical fiber base material
JPS649831A (en) Production of preform for optical fiber
JPS569236A (en) Manufacture of optical fiber
JPS5795838A (en) Manufacture of oxide powder rod for optical fiber
JPS5650134A (en) Manufacture of multicomponent type glass fiber base material
JPS55158144A (en) Manufacture of optical fiber base material
JPS5626739A (en) Manufacture of optical fiber base material
JPS63123829A (en) Production of preform for optical fiber
JPS5510468A (en) Production of glass fiber for light communication
JPH0218333A (en) Heat treatment of porous base material
JPS55167144A (en) Manufacture of quartz glass tube
JPS5767032A (en) Manufacture of base material for rod lens