METHOD OF MOLDING QUARTZ GLASS MATERIAL USING MOLD MATERIAL

PROBLEM TO BE SOLVED: To provide a molding method of molding a quartz glass material into a prescribed shape by forming a releasing material with a simple work without the occurrence of crack or incorporation of bubbles. SOLUTION: In the method of molding a quartz glass material 16 using the mold material 10 for molding a profile of a glass product by heating and melting the quartz glass material 16 in the mold material 10, the profile of the glass product is molded by preparing the carbon-made molding material 10 having a silicon carbide film 20 formed on surfaces 12a, 14a in contact with the heated and melted quartz glass material 16 by applying carbon silicate slurry and drying, placing the quartz glass material 16 in the mold material 10 and heating and melting the quartz glass material 16 in the mold material 10. A carbon sheet or a carbon felt is used as a releasing material on the inner wall surfaces 12a, 14a of the carbon-made mold material 10 and the quartz glass material in the mold material is placed and heated and melted in the mold material to form the profile of the glass product. COPYRIGHT: (C)2010,JPO&INPIT