Controlled liquefying of layer of granular glass etc.

摘要

The granular material (glass batch) is fed onto a lining of granular material (glass batch) on a support surface in a furnace and heated to liquefy it so that it flows off the lining. The lining thickness is monitored and controlled by measuring the temperature at a region spaced from and facing an end of the lining (by a series of thermocouples) and the heat input is adjusted in response to the temperature changes which indicate a change in the lining thickness.