JPS6458987A - Heat-insulating method of high temperature furnace - Google Patents

Heat-insulating method of high temperature furnace

Info

Publication number
JPS6458987A
JPS6458987A JP21889487A JP21889487A JPS6458987A JP S6458987 A JPS6458987 A JP S6458987A JP 21889487 A JP21889487 A JP 21889487A JP 21889487 A JP21889487 A JP 21889487A JP S6458987 A JPS6458987 A JP S6458987A
Authority
JP
Japan
Prior art keywords
heat insulating
density
insulating material
high temperature
temperature
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
JP21889487A
Other languages
Japanese (ja)
Inventor
Ichiro Yoshimura
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP21889487A priority Critical patent/JPS6458987A/en
Publication of JPS6458987A publication Critical patent/JPS6458987A/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
    • C03B37/0146—Furnaces therefor, e.g. muffle tubes, furnace linings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

PURPOSE: To achieve a lower power consumption and a quick rise or drop in temperature by using a fibrous heat insulating material which has a density distribution higher in the bulk density on the side of a high temperature part and low on the side of a low temperature part as heat insulating material surrounding the high temperature part. CONSTITUTION: A heat insulating material is formed, for example, in three layers to make the bulk density thereof higher inside and lower outside. When the density of a fibrous heat insulating material 3a in the innermost layer is represented by ρa, that 3b in the intermediate layer by ρb and that 3c in the outermost layer by ρc, ρa>ρb>ρc. The density of the heat insulating material preferably changes continuously in stead of varying gradually. The optimum value is determined for the density of the heat insulating materials considering the temperature distribution in the heat insulating materials and the temperature characteristic of heat conductivity. When the maximum furnace temperature is 2,000 deg.C, the use of a carbon felt is efficient and practical; the density in the innermost layer is set to be 0.3-0.6G/cc and that in the outermost layer to be about 0.1-0.2 G/cc. It is more efficient to combine an infrared reflecting sheet inside the fibrous heat insulating material in the innermost layer.
JP21889487A 1987-08-31 1987-08-31 Heat-insulating method of high temperature furnace Pending JPS6458987A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21889487A JPS6458987A (en) 1987-08-31 1987-08-31 Heat-insulating method of high temperature furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21889487A JPS6458987A (en) 1987-08-31 1987-08-31 Heat-insulating method of high temperature furnace

Publications (1)

Publication Number Publication Date
JPS6458987A true JPS6458987A (en) 1989-03-06

Family

ID=16726974

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21889487A Pending JPS6458987A (en) 1987-08-31 1987-08-31 Heat-insulating method of high temperature furnace

Country Status (1)

Country Link
JP (1) JPS6458987A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0363494A (en) * 1989-07-31 1991-03-19 Hanawa Netsuden Kinzoku Kk High temperature heating device
JPH0367988A (en) * 1989-08-04 1991-03-22 Hanawa Netsuden Kinzoku Kk Heat-shielding device
JPH0387593A (en) * 1989-08-30 1991-04-12 Osaka Gas Co Ltd Surface protection board preliminary body, surface protection board for furnace wall heat insulation and furnace using them
JP2002211942A (en) * 2001-01-10 2002-07-31 Shin Etsu Chem Co Ltd Drawing machine for glass perform
JP2012206875A (en) * 2011-03-29 2012-10-25 Shin Etsu Handotai Co Ltd APPARATUS FOR GROWING SiC
CN103467000A (en) * 2013-09-11 2013-12-25 上海骐杰碳素材料有限公司 Compound thermal insulation material manufactured by using waste fibers and manufacturing method thereof
WO2021014989A1 (en) * 2019-07-19 2021-01-28 三菱ケミカル株式会社 Heat insulating protective member, method for manufacturing same, method for installing same, in-furnace member, and heating furnace
WO2024071096A1 (en) * 2022-09-28 2024-04-04 イビデン株式会社 Heat insulating material

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0363494A (en) * 1989-07-31 1991-03-19 Hanawa Netsuden Kinzoku Kk High temperature heating device
JPH0367988A (en) * 1989-08-04 1991-03-22 Hanawa Netsuden Kinzoku Kk Heat-shielding device
JPH0387593A (en) * 1989-08-30 1991-04-12 Osaka Gas Co Ltd Surface protection board preliminary body, surface protection board for furnace wall heat insulation and furnace using them
JP2002211942A (en) * 2001-01-10 2002-07-31 Shin Etsu Chem Co Ltd Drawing machine for glass perform
JP2012206875A (en) * 2011-03-29 2012-10-25 Shin Etsu Handotai Co Ltd APPARATUS FOR GROWING SiC
CN103467000A (en) * 2013-09-11 2013-12-25 上海骐杰碳素材料有限公司 Compound thermal insulation material manufactured by using waste fibers and manufacturing method thereof
WO2021014989A1 (en) * 2019-07-19 2021-01-28 三菱ケミカル株式会社 Heat insulating protective member, method for manufacturing same, method for installing same, in-furnace member, and heating furnace
WO2024071096A1 (en) * 2022-09-28 2024-04-04 イビデン株式会社 Heat insulating material

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