ISO 7884-7:1987 玻璃.粘度和粘滞固定点.第7部分：用射线弯曲法测定退火点和应变点

标准编号：ISO 7884-7:1987

中文名称：玻璃.粘度和粘滞固定点.第7部分：用射线弯曲法测定退火点和应变点

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

发布日期：1987-12

标准范围

指定的方法提供的数值可用于指定玻璃器皿生产中的冷却程序。通过测量简单加载玻璃梁的中点粘性弯曲速率来确定退火点。应变点随后通过外推方法确定。附录A提供了各种截面几何形状下的截面惯性矩公式，附录B显示了梁弯曲装置的示例

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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