| 摘要 |
In a method for manufacturing a glass substrate with a down draw method, a bushing chamber (30) is provided with a heating element (28), a molding body (14) and an inner partition wall (16) that divides the heating element (28) and the molding body (14). An SiC sintered body with an open porosity of 1% or less is used for the inner partition wall (16), and molten glass (MG) which flows over the molding body (14) is heated by the heating element (28) via the inner partition wall (16). Thus, oxidation expansion of the inner partition wall (16) can be suppressed. |
