ISO 7884-7:1987
Glass; Viscosity and viscometric fixed points; Part 7 : Determination of annealing point and strain point by beam bending
- Standard No.
- ISO 7884-7:1987
- Release Date
- 1987
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 7884-7:1987
- 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
ISO 7884-7:1987 history
- 1987 ISO 7884-7:1987 Glass; Viscosity and viscometric fixed points; Part 7 : Determination of annealing point and strain point by beam bending
