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ISO 7884-7:1987

Glass — Viscosity and viscometric fixed points — Part 7: Determination of annealing point and strain point by beam bending

Nov 26, 1987

General information

90.93     Dec 11, 2020

ISO

ISO/TC 48/SC 7

International Standard

81.040.01  

English  

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Scope

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

Life cycle

NOW

PUBLISHED
ISO 7884-7:1987
90.93 Standard confirmed
Dec 11, 2020

National adoptions

SSH ISO 7884-7:2002  
DPS

Glass — Viscosity and viscometric fixed points — Part 7: Determination of annealing point and strain point by beam bending

60.60 Standard published

DPS/KT 129 more

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