Process for producing composite bodies from quartz material

US6412306B1 · kind B1 · utility

Assignee

• SICO Jena GmbH Quarzschmelze · DE

Inventors

• Hans-Juergen Flieger · Jena, DE
• Karl-Heinz Schiecke · Jena, DE
• Werner Schmid · Heidenheim, DE
• Dirk Schulze · Bonn, DE
• Peter Jochmann · Jena, DE
• Bernhart Sindzinski · Jena, DE
• Klaus Sivec · Villach, AT

Key dates

• Filing date: Jun 30, 2000
• Grant date: Jul 2, 2002
• Expiry date: Jun 30, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03B23/24
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A process for producing composite bodies from a plurality of molded pieces made from quartz materials of different or identical structure, preferably fused quartz and/or fused silica. Also, composite bodies produced according to this process. A prismatic molded piece with a rectangular bottom surface and top surface and four plate-shaped molded pieces whose dimensions are tailored to the outer surfaces of the prismatic molded piece are produced in a first step, the plate-shaped molded pieces are then fixed to the outer surfaces of the prismatic molded piece, the prismatic molded piece and the plate-shaped molded pieces are heated together under protective gas to a predetermined temperature T&egr; above the softening temperature of the quartz material and then cooled, resulting in a prismatic composite body which is joined thermally in a material engagement and which can be severed to form a series of plate-shaped composite bodies.