Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Publication of BE660330ApublicationCriticalpatent/BE660330A/xx
C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
C30B13/16—Heating of the molten zone
C30B13/20—Heating of the molten zone by induction, e.g. hot wire technique
Verfahren zum Erzeugen einer Hartschicht auf Wekzeugen, Verwendung einer Vorrichtung zur Durchführung des Verfahrens sowie Preßstempel und Pegel zur Herstellung von Hohlglas