| 摘要 |
A method is described for making a float glass convertible into a glass ceramic, by which a largely crystal fault-free glass can be produced. In this method the glass is cooled from a temperature (TKGmax), at which a crystal growth rate is at a maximum value (KGmax), to another temperature (TUEG), at which practically no more crystal growth occurs, with a cooling rate, KR, in ° C. min−1 according to: KR UEG KGmax≥Δ T UEG KGmax 100 · KG max , whereinΔT=TKGmax−TUEG, and KGmax=maximum crystal growth rate inμm min−1. The float glass has a thickness below an equilibrium thickness, a net width of at least 1 m and has no more than 50 crystals with a size of more than 50μm, especially no crystals with a size of more than 10μm, per kilogram of glass within the net width. |
