| 摘要 |
This method for manufacturing a glass plate includes a melting step, a fining step, and a forming step. In the melting step, molten glass is produced by using at least electrical heating to melt a glass feedstock containing SnO2 as a fining agent. The fining step includes the following: a bubble-removal process in which the temperature of the molten glass is raised to at least 1,630°C so as to generate bubbles therein in order to perform bubble removal; and an absorption process, after the bubble-removal process, in which the temperature of the molten glass is reduced at a rate of at least 2°C/min over the temperature range from 1,600°C to 1,500°C so as to make the molten glass absorb the bubbles therein. In the forming step, a down-draw process is used to form the post-fining-step molten glass into plate glass. |
