ISO 7884:1987
ISO 7884:1987 Glass – Viscosity and viscometric fixed points – Part 7: Determination of annealing point and strain point by beam bending
CDN $131.00
Description
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
Edition
1
Published Date
1987-11-26
Status
PUBLISHED
Pages
9
Language
English
Format
Secure PDF
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Abstract
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
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