ASTM C1276-94(2005)

    Standard Test Method for Measuring the Viscosity of Mold Powders Above Their Melting Point Using a Rotational Viscometer (Withdrawn 2009)

    Withdrawn Standard: ASTM C1276-94(2005) | Developed by Subcommittee: C08.10

    WITHDRAWN, NO REPLACEMENT


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    Withdrawn Rationale:

    This test method covers measurement of the viscosity of mold powders above their melting point through the use of a platinum spindle immersed in a platinum crucible containing the molten mold flux. Developed by differential angular velocity between the crucible and spindle, spindle torque is measured and used to calculate the viscosity. Data are generally taken as a function of temperature to describe the viscosity-temperature relationship for the molten mold flux.

    Formerly under the jurisdiction of Committee C08 on Refractories, this test method was withdrawn in September 2009. This test method is being withdrawn due to lack of interest and support for its continued use.

    1. Scope

    1.1 This test method covers measurement of the viscosity of mold powders above their melting point through the use of a platinum spindle immersed in a platinum crucible containing the molten mold flux. Developed by differential angular velocity between the crucible and spindle, spindle torque is measured and used to calculate the viscosity. Data are generally taken as a function of temperature to describe the viscosity-temperature relationship for the molten mold flux.

    1.2 This test method uses a high-temperature furnace and measurements on molten material. Personal protection equipment to wear include high-temperature resistant insulating gloves, coveralls, and a full-face shield.

    1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

    1.4 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. A specific warning statement is given in Note 1.



    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C965 Practice for Measuring of Viscosity of Glass Above the Softening Point

    C1095 Practice for Calculating Precision Data on Refractories (C08) from Interlaboratory Test Results

    E220 Test Method for Calibration of Thermocouples by Comparison Techniques

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method


    DOI: 10.1520/C1276-94R05

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