Method for homogenizing glass

US11485671B2 · kind B2 · utility

Assignee

• HERAEUS QUARZGLAS GMBH & CO. KG · DE

Inventors

• Stephan Thomas · Großkrotzenburg, DE
• Jan Vydra · Hanau, DE
• Martin Trommer · Bitterfeld-Wolfen, DE
• Michael Huenermann · Alzenau, DE
• Andreas Langner · Alzenau, DE
• Walter Lehmann · Leipzig, DE
• Stefan Hengster · Schaafheim, DE
• Klaus Becker · Hanau, DE

Key dates

• Filing date: Oct 24, 2019
• Grant date: Nov 1, 2022
• Expiry date: May 19, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03B19/066
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method for homogenizing glass includes the method: providing a cylindrical blank composed of the glass having a cylindrical outer surface that extends along a longitudinal axis of the blank between a first end face and a second end face, forming a shear zone in the blank by softening a longitudinal section of the blank and subjecting it to a thermal-mechanical intermixing treatment, and displacing the shear zone along the longitudinal axis of the blank. To enable a radial mixing within the shear zone in addition to the tangential mixing with the lowest possible time and energy input, starting from this method, cylindrical sections of the blank are adjacent to the shear zone on both sides, the first cylindrical section having a first central axis and the second cylindrical section having a second central axis, the first central axis and the second central axis being temporarily non-coaxial with each other.