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ASTM D958-88

(Practice)

Practice for Determining Temperatures of Standard ASTM Molds for Test Specimens of Plastics (Withdrawn 1995)

Practice for Determining Temperatures of Standard ASTM Molds for Test Specimens of Plastics (Withdrawn 1995)

General Information

Status
Withdrawn
ICS
83.200 - Equipment for the rubber and plastics industries
Technical Committee
D20 - Plastics
Drafting Committee
D20.09 - Specimen Preparation
Current Stage
Ref Project

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ASTM D958-88 - Practice for Determining Temperatures of Standard ASTM Molds for Test Specimens of Plastics (Withdrawn 1995)ASTM D958-88 - Practice for Determining Temperatures of Standard ASTM Molds for Test Specimens of Plastics (Withdrawn 1995)
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ASTM D958-88 - Practice for Determining Temperatures of Standard ASTM Molds for Test Specimens of Plastics (Withdrawn 1995)
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Standards Content (Sample)

ASTM Dy58 88 m 0757530 0040403 9 m
SiTb Designation: D 958 - 88
AMERICAN SOCIETY FOR TESTING AND MATERIALS
1916 Race St., Philadelphia, Pa. 19103
Reprinted from the Annual Eook of ASTM Standards. Copyright ASTM
If not listed in the current combined index, viill appear in the next edition.
Standard Practice for
Determining Temperatures of Standard ASTM Molds for Test
of Plastics'
Specimens
This standard is issued under the fixed designation D 958; the number immediately foliowing the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (E) indicafes an editorial change since the last revision or reapproval.
1. Scope PROCEDURE USING THERMOMETER
1.1 This practice covers two optional procedures for
5. Apparatus
determining the temperature condition of standard ASTM
5.1 Thermometer-A 76-mm (3411.) immersion, mer-
molds for test specimens of plastics by means of either a
cury-filled thermometer having a temperature scale of not
thermometer or a pyrometer.
more than 25°C (45°F) per 25 mm (1 in.) of length shall be
1.2 The values stated in SI units are to be regarded as the
used.
standard. The values in parentheses are given for informa-
tion only. NOTE I-The following ASTM standard thermometers (see Specifi-
cation E I) are considered satisfactory: 95C, 96C, IOOC, and 101C.
1.3 This standard may involve hazardous materials, oper-
ations, and equipment. This standard does not purport to
6. Procedure
address all of the safety problems associated with its use. It is
6.1 The chase of the mold shall be equipped with an
the responsibility of the user of this standard to establish
immersion well 76 mm (3 in.) in depth. The base of the well
appropriate safety and health practices and determine the
shall be located at a point not more than 6.3 mm (Y4 in.)
applicability of regulatory limitations prior to use.
from the surface of the cavity. Insert the thermometer into
the well as far as possible. Allow the thermometer to remain
2. Referenced Documents
in the well until the mercury no longer moves in the column.
2.1 ASTM Standards:
The thermometer reading at this point shall be considered
D 647 Practice for Design of Molds for Test Specimens of
the mold temperature. In recording the temperature reading,
Plastic Molding Materials2
state that the thermometer procedure was used.
D 957 Practice for Determining Mold Surface Tempera-
ture of Commercial Molds for Plastics2 PROCEDURE USING PYROMETER
E 1 Specification for ASTM Thermometers3
7. Apparatus
3. Significance and Use
7.1 Pyrometer-A calibrated surface pyrometer (Note 2)
accurate within t1.5"C (2.7"F) shall be used.
3.1 The properties of molded parts and the ease of
producing satisfactory specimens are influenced by the
NOTE 2-For
...

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3.1 The properties of molded parts and the ease of producing satisfactory specimens are influenced by the temperature of the mold. It is desirable to know the actual mold temperature, which can differ from the mold temperature control medium.  
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The properties of molded parts and the ease of producing satisfactory specimens are influenced by the temperature of the mold. It is desirable to know the actual mold temperature which may be different from the mold temperature control medium.
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