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ASTM International - ASTM C965-96(2002)

Standard Practice for Measuring Viscosity of Glass Above the Softening Point

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Organization: ASTM International
Publication Date: 10 October 1996
Status: inactive
Page Count: 4
ICS Code (Raw materials and raw glass): 81.040.10
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.

Document History

November 1, 2017
Standard Practice for Measuring Viscosity of Glass Above the Softening Point
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,...
March 1, 2012
Standard Practice for Measuring Viscosity of Glass Above the Softening Point
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,...
April 1, 2007
Standard Practice for Measuring Viscosity of Glass Above the Softening Point
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,...
October 10, 1996
Standard Practice for Measuring Viscosity of Glass Above the Softening Point
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,...
ASTM C965-96(2002)
October 10, 1996
Standard Practice for Measuring Viscosity of Glass Above the Softening Point
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,...
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