| 摘要 |
PROBLEM TO BE SOLVED: To provide a mold material capable of obtaining a quartz glass molding by heating and molding efficiently a plurality of quartz glass materials such as a remainder material, and improving the yield of productization of the obtained quartz glass molding, and to provide a production method of the quartz glass molding using the mold material.SOLUTION: A mold material 10 for molding a columnar quartz glass molding having an enlarged outer diameter of quartz glass materials by heating and melting the columnar quartz glass materials 106, 108 has a bottom plate 102, a cylindrical member 104 disposed on the bottom plate 102 in the state where one opening part has a contact with the bottom plate 102, and at least one partition plate 12 movable vertically in the cylindrical member 104. |
