JPS5645833A - Production of partially tempered glass plate - Google Patents

Production of partially tempered glass plate

Info

Publication number
JPS5645833A
JPS5645833A JP11875779A JP11875779A JPS5645833A JP S5645833 A JPS5645833 A JP S5645833A JP 11875779 A JP11875779 A JP 11875779A JP 11875779 A JP11875779 A JP 11875779A JP S5645833 A JPS5645833 A JP S5645833A
Authority
JP
Japan
Prior art keywords
area
glass plate
see
plate
heating
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
JP11875779A
Other languages
Japanese (ja)
Inventor
Masayuki Miwa
Hiroshi Tsuji
Koji Imamura
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.)
AGC Inc
Original Assignee
Asahi Glass Co 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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP11875779A priority Critical patent/JPS5645833A/en
Publication of JPS5645833A publication Critical patent/JPS5645833A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/0404—Nozzles, blow heads, blowing units or their arrangements, specially adapted for flat or bent glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/0413—Stresses, e.g. patterns, values or formulae for flat or bent glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/052—Tempering or quenching glass products using gas for flat or bent glass sheets being in a vertical position
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
    • C03B29/04—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way
    • C03B29/06—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way with horizontal displacement of the products
    • C03B29/08—Glass sheets
    • C03B29/10—Glass sheets being in a vertical position

Landscapes

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

Abstract

PURPOSE:To prevent weeping-willow-shaped fine pieces from aggregating in a central see-through area by keeping the temperature of said area lower than that of the peripheral area at the time of heating a glass plate at above its deformation point and below its softening point. CONSTITUTION:At the time of heating a glass plate 21 to the temperature above its deformation point and below its softening point, a heat shielding plate 25 is disposed to the corresponding part of the glass plate 21 forming a central see-through area to keep the temperature in said area at a temperature lower by 10-50 deg.C than that in the peripheral area. As a result, when the glass plate 21 is air cooled, a difference in cooling capacity occurs between the central see-through area and peripheral area thereof and the plane tensile stress produced in the central see-through area is made low. The shield plate 25 is disposed on both sides of the glass plate 21 and a stainless steel plate, heat-resistant bricks, or stainless steel mesh plate is used for the same. For example, the glass plate 21 is suspended by a carriage 23, and the stainless steel mesh plates 24 are disposed on both sides of the see-through area of the glass plate 21 by subcarriages 24. This is subjected to 2-step heating in a heating furnace to heat the see-through area to about 635 deg.C and the peripheral area to about 656 deg.C. Thereby, the aggreagating of weeping-willow-shaped fine pieces is prevented.
JP11875779A 1979-09-18 1979-09-18 Production of partially tempered glass plate Pending JPS5645833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11875779A JPS5645833A (en) 1979-09-18 1979-09-18 Production of partially tempered glass plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11875779A JPS5645833A (en) 1979-09-18 1979-09-18 Production of partially tempered glass plate

Publications (1)

Publication Number Publication Date
JPS5645833A true JPS5645833A (en) 1981-04-25

Family

ID=14744297

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11875779A Pending JPS5645833A (en) 1979-09-18 1979-09-18 Production of partially tempered glass plate

Country Status (1)

Country Link
JP (1) JPS5645833A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62113672A (en) * 1985-11-12 1987-05-25 本田技研工業株式会社 Reserve tank for rear cushion
JPS6453723U (en) * 1987-09-25 1989-04-03
EP1380550A1 (en) * 2002-07-10 2004-01-14 Asahi Glass Co., Ltd. Tempered glass sheet having a central zone of higher compressive stress, process and apparatus therefor
JP2004091311A (en) * 2002-07-10 2004-03-25 Asahi Glass Co Ltd Tempered glass plate, manufacturing method thereof and manufacturing apparatus
CN104230156A (en) * 2014-09-04 2014-12-24 洛阳名特设备技术有限公司 Double-chamber four-station glass bending and toughening device and control method thereof
WO2022224910A1 (en) * 2021-04-20 2022-10-27 Ａｇｃ株式会社 Laminated glass for automotive windows, automobile, and method for producing laminated glass for automotive windows

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62113672A (en) * 1985-11-12 1987-05-25 本田技研工業株式会社 Reserve tank for rear cushion
JPS6453723U (en) * 1987-09-25 1989-04-03
EP1380550A1 (en) * 2002-07-10 2004-01-14 Asahi Glass Co., Ltd. Tempered glass sheet having a central zone of higher compressive stress, process and apparatus therefor
JP2004091311A (en) * 2002-07-10 2004-03-25 Asahi Glass Co Ltd Tempered glass plate, manufacturing method thereof and manufacturing apparatus
CN104230156A (en) * 2014-09-04 2014-12-24 洛阳名特设备技术有限公司 Double-chamber four-station glass bending and toughening device and control method thereof
WO2022224910A1 (en) * 2021-04-20 2022-10-27 Ａｇｃ株式会社 Laminated glass for automotive windows, automobile, and method for producing laminated glass for automotive windows
JPWO2022224910A1 (en) * 2021-04-20 2022-10-27

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