METHOD FOR PRESS-FORMING OPTICAL ELEMENT

PURPOSE:To increase the rate of forming and to prolong the life of a pair of dies while maintaining prescribed forming accuracy when a glass block is pressed between the dies to obtain a formed article, by giving a specified temp. gradient to the glass block and specifying the temp. of the dies. CON...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	SATO FUMIYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY GLASS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	PURPOSE:To increase the rate of forming and to prolong the life of a pair of dies while maintaining prescribed forming accuracy when a glass block is pressed between the dies to obtain a formed article, by giving a specified temp. gradient to the glass block and specifying the temp. of the dies. CONSTITUTION:A preformed glass block 1 heated to a certain low temp. at which the block 1 has