Glass — Viscosity and viscometric fixed points — Part 5: Determination of working point by sinking bar viscometer
NORM herausgegeben am 26.11.1987
Bezeichnung normen: ISO 7884-5:1987
Ausgabedatum normen: 26.11.1987
Zahl der Seiten: 5
Gewicht ca.: 15 g (0.03 Pfund)
Land: Internationale technische Norm
Kategorie: Technische Normen ISO
Description / Abstract: The specified method is suitable for characterizing the low-viscosity range of glass working: A vertically positioned narrow metal rod, i.e. the bar, is allowed to sink under its own weight into the melt. From the rate of sinking the dynamic viscosity is calculated. The teoretical basis relation and the apparatus including method of measurements are described.