Reference number
ISO 7884-4:1987
ISO 7884-4:1987
© ISO 2024
International Standard
ISO 7884-4:1987
Glass — Viscosity and viscometric fixed points — Part 4: Determination of viscosity by beam bending
Edition 1
1987-12
1987-12
ISO 7884-4:1987
14828
Publiée
(Edition 1, 1987)
Cette publication a été révisée et confirmée pour la dernière fois en 2020.
Cette édition reste donc d’actualité.
ISO 7884-4:1987
ISO 7884-4:1987
14828
CHF
63
Convertir les francs suisses (CHF) dans une autre devise
Résumé
A method of determining the dynamic viscosity of glass on a rod-shaped test specimen, i.e. a beam, supported at its end is specified. The viscous deflection rate of the beam is measured under given load at the midpoint between the supports. In addition the viscosity-temperature relationship and the dependence of the viscosity on the thermal history of the sample can be determined. The theoretical basis relations and the apparatus including method of measurements are described.
Informations générales
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État actuel: PubliéeDate de publication: 1987-12Stade: Norme internationale confirmée [90.93]
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Edition: 1
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Comité technique :ISO/TC 48/SC 7ICS :81.040.01
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