A method for the production of alkali-free aluminosilicate glasses

摘要

A method for the production of up to unavoidable impurities alkali-free aluminosilicate glasses having a content of al₂O₃ (in w -%, based on oxide) of more than 13,5 w -%, comprising the steps of batch formulation with the addition of at least one refining agent, melting of the glass and subsequent hot forming of the molten glass, characterized in that the glass mixture 0,005 w -% to 0,6 w -% sulfate (e), indicated as the so₃, be added, and that no evaporation fining agents are added to the glass batch.