METHOD AND APPARATUS FOR TEMPERING GLASS SHEETS

A method and apparatus for tempering glass sheets. The glass sheets are heated to a tempering temperature in a furnace, in which the glass sheets are moved back and forth while supported upon rolls. The heated glass sheets are fed into a quench unit which is divided into two quenching zones with sep...

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Bibliographic Details
Main Authors PESONEN TARMO, VEHMAS JUKKA
Format Patent
LanguageEnglish
Published 26.03.2015
Subjects
CHEMISTRY
GLASS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
METALLURGY
MINERAL OR SLAG WOOL
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Summary:A method and apparatus for tempering glass sheets. The glass sheets are heated to a tempering temperature in a furnace, in which the glass sheets are moved back and forth while supported upon rolls. The heated glass sheets are fed into a quench unit which is divided into two quenching zones with separately controlled blasting pressures. The glass sheets are driven without stopping through the first quenching zone into the second quenching zone, in which the glass is moved back forth upon the rolls. In the first quenching zone, cooling air is blasted onto glass sheet surfaces with slit nozzles. In the second quenching zone, cooling air is blasted onto glass sheet surfaces with hole-type nozzles.
Bibliography:Application Number: US201414496311