Method for flame abrasion of glass preform

A glass preform (1) is preheated and then subjected to a flame abrasion by oxyhydrogen flame (4). A surface of the glass preform (1) thus abrased has no crack during the cooling after the flame abrasion.

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Bibliographic Details
Main Authors OHGA, YUICHI, DANZUKA, TOSHIO
Format Patent
LanguageEnglish
French
German
Published 08.01.1997
Edition6
Subjects
CHEMISTRY
GLASS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
METALLURGY
MINERAL OR SLAG WOOL
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Summary:A glass preform (1) is preheated and then subjected to a flame abrasion by oxyhydrogen flame (4). A surface of the glass preform (1) thus abrased has no crack during the cooling after the flame abrasion.
Bibliography:Application Number: EP19920110326