Process for the preparation of a ceramizable green-glass component and ceramizable green-glass component and glass-ceramic article

摘要

The present invention relates to a process for the preparation of ceramizable green-glass components, to an apparatus for carrying out such a process, and to a ceramizable green-glass component which can be prepared by the process. The process is a re-entrainment process in which a preform is heated to a temperature in a deformation zone that permits re-drawing of the glass. The method is characterized in that the deformation zone is particularly small. This ensures that ceramizable green glass body can be pulled back without a ceramization already begins during the Wiederziehen. Plate-like or disc-shaped green-glass components are available with the method, which are characterized by, among other things, a particularly smooth surface.