Method and apparatus for producing a glass component

US11512017B2 · kind B2 · utility

Assignee

• HERAEUS QUARZGLAS GMBH & CO. KG · DE

Inventors

• Jacqueline Plass · Hanau, DE
• Dörte Schönfeld · Hanau, DE
• Clemens Schmitt · Walldürn, DE
• Alexander Laaz · Hanau, DE
• Andreas Langner · Alzenau, DE
• Gerhard Schötz · Hanau, DE
• Walter Lehmann · Leipzig, DE
• Michael Hünermann · Alzenau, DE
• Stefan Weidlich · Hetzles, DE
• Jurgen Schafer · Munich, DE

Key dates

• Filing date: Feb 28, 2020
• Grant date: Nov 29, 2022
• Expiry date: Feb 26, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03B2205/63
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

In known methods for producing a glass component, a void-containing intermediate product containing doped or non-doped SiO2 is inserted into a sheath tube composed of glass, which has a longitudinal axis and an inner bore, and is thermally treated therein. In order to subject the intermediate product to a thermal and/or reactive treatment that is reproducible and uniform in its effect from this starting point, it is proposed in one embodiment that into the sheath tube's inner bore a first gas-permeable gas diffuser is inserted which is displaceable along the sheath tube's longitudinal axis and is pressed against the intermediate product during the thermal treatment.