International Standard
ISO 7884-7:1987
Glass — Viscosity and viscometric fixed points — Part 7: Determination of annealing point and strain point by beam bending
Reference number
ISO 7884-7:1987
ISO 7884-7:1987
Edición 1
1987-12
1987-12
© ISO 2024
International Standard
p
ISO 7884-7:1987
14831
No disponible en español
Publicado
(Edición 1, 1987)
Esta norma se revisó y confirmó por última vez en 2020.
Por lo tanto, esta versión es la actual.
Resumen
The specified method provides values being useful for specifying the cooling programme in the production of glassware. The annealing point is determined by measuring the rate of midpoint viscous bending of a simple loaded glass beam. The strain point is subsequently determined by an extrapolation method. Annex A provides the formulae for cross-sectional moment of inertia at various cross-section geometries, and annex B shows an example of beam bending apparatus
Ciclo de vida
Got a question?
Check out our FAQs
Customer care
+41 22 749 08 88
Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)