ISO 7884-7:1987 (R2020)
Active , Reaffirmed Standard
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ISO 7884-7:1987 (R2020)

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

Summary

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

Notes

90.93 : Norme internationale confirmée

Technical characteristics

Publisher International Organization for Standardization (ISO)
Publication Date 11/26/1987
Confirmation Date 12/11/2020
Edition 1
Page Count 9
EAN ---
ISBN ---
Weight (in grams) ---
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