ASTM-C965 2002
$35.75
C965-96(2002) Standard Practice for Measuring Viscosity of Glass Above the Softening Point
| Published By | Publication Date | Number of Pages |
| ASTM | 2002 | 5 |
ASTM C965-96-Reapproved2002
Historical Standard: Standard Practice for Measuring Viscosity of Glass Above the Softening Point
ASTM C965
Scope
1.1 This practice covers the determination of the viscosity of glass above the softening point through the use of a platinum alloy spindle immersed in a crucible of molten glass. Spindle torque, developed by differential angular velocity between crucible and spindle, is measured and used to calculate viscosity. Generally, data are taken as a function of temperature to describe the viscosity curve for the glass, usually in the range from 1 to 10 6 Pa·s.
1.2 Two procedures with comparable precision and accuracy are described and differ in the manner for developing spindle torque. Procedure A employs a stationary crucible and a rotated spindle. Procedure B uses a rotating crucible in combination with a fixed spindle.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywords
concentric cyclinders method; glass; viscosity
ICS Code
ICS Number Code 81.040.10 (Raw materials and raw glass)
DOI: 10.1520/C0965-96R02
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | Scope Referenced Documents Significance and Use Apparatus |
| 2 | Preparation of Test Glass Calibration and Viscosity Determination FIG. 1 FIG. 2 |
| 3 | Procedure TABLE 3 FIG. 3 FIG. 4 |
| 4 | Calculation Report Precision and Bias Keywords X1. STANDARD SAMPLES FOR VISCOSITY DETERMINATIONS X1.1 |
| 5 | TABLE 1 |
