Method for making a curved glass-ceramic panel by bending a green glass panel to be ceramicized and apparatus for performing said method

The method of making a curved glass-ceramic panel by bending a green glass panel to be ceramicized avoids formation of stresses in the bending zone. The method includes performing the bending process in a heated chamber at a temperature of from 10° C. to 50° C. above a transformation temperature of...

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Bibliographische Detailangaben
Hauptverfasser: Bader, Hubertus, Vollmer, Markus, Hochhaus, Roland, Mocnik, Ruediger, Brenz, Hans-Joachim
Format: Patent
Sprache:eng
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Zusammenfassung:The method of making a curved glass-ceramic panel by bending a green glass panel to be ceramicized avoids formation of stresses in the bending zone. The method includes performing the bending process in a heated chamber at a temperature of from 10° C. to 50° C. above a transformation temperature of the green glass panel to be bent; providing a forming body acting as a workpiece support ( 3 ) with a geometric shape according to a bend geometry of the glass-ceramic panel and tempering the forming body at the temperature of the heated chamber; bringing the forming body into effective mechanical contact with the green glass panel in a bending zone of the green glass panel to form a curved green glass panel and ceramicizing the curved green glass panel to form the curved glass-ceramic panel.