Patent ID: 7628037
Filing Date: 2009-12-08
Classification: C03B

Abstract:
1. A method of manufacturing glass, said method comprising the steps of: a) at least partially enclosing a glass melt from which the glass is manufactured with at least one precious metal or refractory metal wall; b) measuring an oxygen partial pressure at an interface between said glass melt and said at least one precious metal or refractory metal wall; c) measuring an oxygen partial pressure in the glass melt at a precious metal electrode immersed in the glass melt; d) using the oxygen partial pressure measured in step c at said precious metal electrode immersed in said glass melt as a set point value and the oxygen partial pressure measured in step b at said interface as an actual value; and e) adjusting or influencing said oxygen partial pressure at said interface between said glass melt and said at least one precious metal or refractory metal wall according to a comparison between said actual value and said set point value, so that said oxygen partial pressure at said interface is within a safe range; wherein said safe range has an upper threshold value, above which oxygen bubbles form at said interface, and a lower threshold value, below which alloy damage or formation of bubbles of N