METHOD FOR PREVENTING SURFACE DEFFECTS IN FLOATING FLAT GLASS, FLAT GLASS AND USE THEREOF

The invention relates to a method for preventing surface deposition and/or crater-shaped hole defects during the production of floating flat glass. Said method consists of producing a glass melt, purifying said melt and floating said purified melt on the surface of the liquid metal under an inert ga...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BEIER WOLFRAM, DAHLMANN ULF
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	The invention relates to a method for preventing surface deposition and/or crater-shaped hole defects during the production of floating flat glass. Said method consists of producing a glass melt, purifying said melt and floating said purified melt on the surface of the liquid metal under an inert gas atmosphere. Said method is characterised in that it i) defines the hydrogen content in the inert gas to a maximum of 7 Vol. % and ii) adjusts the oxygen partial pressure in the floating gas melt a) by means of a metal, whereby the reaction enthalpy for the oxidation G° (Me /MexOy7) is >-575,8 + 0.21 T[K] or b) by means of a metal whereby the reaction enthalpy for the oxidation G° (Me /MexOy) is