BE786807A - Automatically quenching glass - by optically observing the change in stresses as the glass is heated - Google Patents

Automatically quenching glass - by optically observing the change in stresses as the glass is heated

Info

Publication number
BE786807A
BE786807A BE786807A BE786807A BE786807A BE 786807 A BE786807 A BE 786807A BE 786807 A BE786807 A BE 786807A BE 786807 A BE786807 A BE 786807A BE 786807 A BE786807 A BE 786807A
Authority
BE
Belgium
Prior art keywords
glass
stresses
heated
change
optical
Prior art date
Application number
BE786807A
Other languages
French (fr)
Original Assignee
Lambert Jean Louis
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 Lambert Jean Louis filed Critical Lambert Jean Louis
Priority to BE786807A priority Critical patent/BE786807A/en
Publication of BE786807A publication Critical patent/BE786807A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/241—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet by photoelastic stress analysis

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Method comprises quantitatively measuring the change in stresses as the glass is heated using an optical method of observation. This method directly measures the point at which the glass is ready for quenching and is superior to other indirect methods e.g. glass temp measurement or heating time. No contact is necessary with the glass. The same appts. may be used to treat different glasses of different sizes. The appts. comprises a radiation source, a polariser, and optical bloc, the glass to be quenched a detection system consisting of an optical device, a second polariser, a quartz. wedge for measuring the optical delay an analyser and a calibrator which orders the start of the quench either manually or automatically.
BE786807A 1972-07-27 1972-07-27 Automatically quenching glass - by optically observing the change in stresses as the glass is heated BE786807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE786807A BE786807A (en) 1972-07-27 1972-07-27 Automatically quenching glass - by optically observing the change in stresses as the glass is heated

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE786807A BE786807A (en) 1972-07-27 1972-07-27 Automatically quenching glass - by optically observing the change in stresses as the glass is heated

Publications (1)

Publication Number Publication Date
BE786807A true BE786807A (en) 1972-11-16

Family

ID=3859989

Family Applications (1)

Application Number Title Priority Date Filing Date
BE786807A BE786807A (en) 1972-07-27 1972-07-27 Automatically quenching glass - by optically observing the change in stresses as the glass is heated

Country Status (1)

Country Link
BE (1) BE786807A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2902881A1 (en) * 2006-06-27 2007-12-28 Stein Heurtey FLAT GLASS PRODUCTION FACILITY WITH CONSTRAINTS MEASURING EQUIPMENT, AND METHOD OF CONDUCTING A FLAT GLASS RECOVERY PLANT.
DE102008045416A1 (en) * 2008-09-02 2010-03-04 Arcon-Dur Sicherheitsglas Gmbh & Co. Kg Apparatus and method for producing thermally toughened glass sheets and thermally toughened glass sheet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2902881A1 (en) * 2006-06-27 2007-12-28 Stein Heurtey FLAT GLASS PRODUCTION FACILITY WITH CONSTRAINTS MEASURING EQUIPMENT, AND METHOD OF CONDUCTING A FLAT GLASS RECOVERY PLANT.
WO2008000936A1 (en) * 2006-06-27 2008-01-03 Fives Stein Installation for producing flat glass, comprising a stress measuring device, and method for operating a flat glass annealing lehr
CN101467029B (en) * 2006-06-27 2013-01-23 法孚斯坦因公司 Installation for producing flat glass, comprising a stress measuring device, and method for operating a flat glass annealing kiln
DE102008045416A1 (en) * 2008-09-02 2010-03-04 Arcon-Dur Sicherheitsglas Gmbh & Co. Kg Apparatus and method for producing thermally toughened glass sheets and thermally toughened glass sheet
EP2159199A3 (en) * 2008-09-02 2015-05-20 Arcon-dur Sicherheitsglas GmbH & Co. KG Method and device for producing thermally pre-tensioned glass panes and thermally pre-tensioned glass pane

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