C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
C23D9/00—Ovens specially adapted for firing enamels
Dispositif pour l'aide au soutien d'une plaque de verre portée à sa température de déformation et reposant simultanément sur des appuis mécaniques