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ISO 7884-7:1987

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

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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


SDO ISO: International Organization for Standardization
Document Number ISO 7884
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 48/SC 5
Publish Date Document Id Type View
Not Available ISO 7884-7:1987 Revision