ASTM D957-95(2006)e1
(Practice)Standard Practice for Determining Surface Temperature of Molds for Plastics
Standard Practice for Determining Surface Temperature of Molds for Plastics
SCOPE
1.1 This practice is intended for determining the temperature at a specified point or points on the surface of the cavity and base of a mold for plastics. By determining the temperature at as many points as deemed necessary, the overall temperature condition of the surface can be determined.
1.2 The values stated in SI units are to be regarded as standard. The values in brackets are given for information only.
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.Note 1
There is no similar ISO standard.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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e1
Designation:D957–95(Reapproved 2006)
Standard Practice for
Determining Surface Temperature of Molds for Plastics
This standard is issued under the fixed designation D 957; the number immediately following 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) indicates an editorial change since the last revision or reapproval.
e NOTE—Editorially removed Referenced Documents section, since the listed standard (D 958) was not referenced within this
standard. Also, editorially added the word “material” to 4.1 for clarity in May 2006.
1. Scope 3.2 The user should be aware of temperature differences
across the mold/thermocouple interface and at leads and should
1.1 This practice is intended for determining the tempera-
take precautions to minimize such differences.
ture at a specified point or points on the surface of the cavity
andbaseofamoldforplastics.Bydeterminingthetemperature
4. Apparatus
at as many points as deemed necessary, the overall temperature
4.1 Pyrometer—Acalibrated surface pyrometer traceable to
condition of the surface can be determined.
a National Institute of Standards and Technology (NIST)
1.2 The values stated in SI units are to be regarded as
standard material and accurate to within 61.5°C shall be used.
standard.The values in brackets are given for information only.
1.3 This standard does not purport to address all of the
5. Procedure
safety concerns, if any, associated with its use. It is the
5.1 The size, shape, and contours of a mold will determine
responsibility of the user of this standard to establish appro-
the location and number of points at which temperature
priate safety and health practices and determine the applica-
readings should be observed. Take temperature readings at as
bility of regulatory limitations prior to use.
many points as deemed necessary to determine the temperature
NOTE 1—There is no similar ISO standard.
condition of the mold surface. At a minimum, it is suggested
that temperature be measured at the mold center, near the edge,
2. Summary of Practice
and at least two different but intermediate points between the
2.1 With the use of a calibrated surface pyrometer, the
center and edge.
overall temperature condition of a mold for plastics can be
5.2 Place the thermocouple of the pyrometer at any speci-
determined by taking readings at a specified point or many
fied point on the surface of the cavity and base of the mold,
points on the mol
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